Loading...
Agenda Item - 2013-10-07 - Number LU 12-0044 - LU 12-0044 STAFF REPORT CITY OF LAKE OSWEGO PLANNING DIVISION APPLICANT/OWNER: FILE NO: City of Lake Oswego (Lake Oswego-Tigard Water Partnership) LU 12-0044 TAX LOT REFERENCE: STAFF: Tax Lots 700, 790 and 3100 of Tax Jessica Numanoglu Map 2 1E 07AD LOCATION: DATE OF REPORT: 4800 Carman Drive September 27, 2013 15505 Quarry Road DATE OF HEARING: COMP. PLAN DESCRIPTION: October 7, 2013 R-7.5 (4800 Carman Drive) PNA (15505 Quarry Road) 120-DAY DECISION DATE: ZONING DESIGNATION: January 13, 2014 R-7.5 (4800 Carman Drive) NEIGHBORHOOD ASSOCIATIONS PNA (15505 Quarry Road) Lake Forest and Waluga APPLICANT'S REQUEST The applicant is requesting approval of the following in order to construct a 3.5 million gallon water reservoir and to extend the Lake Oswego Finished Water Pipeline to the reservoir: • A Conditional Use Permit; • A Development Review Permit; • Determination of an RC Protection Area (RCPA); • Construction of a utility line (pipeline) through an RC district; • A Minor Variance to increase the maximum allowed grade of the driveway from 15%to 17% and to increase the maximum grade of the driveway approach from 5%to 6%; • The removal of 195 trees; and, • A resource enhancement project in the RCPA. LU 12-0044 Page 1 of 39 II. RECOMMENDATION Approval of LU 12-0044, with conditions. The complete list of conditions is provided starting on page 33 of this report. III. APPLICABLE REGULATIONS' A. City of Lake Oswego Comprehensive Plant Goal 2: Land Use Planning Policies Section 1, Land Use Policies and Regulations Goal 5: Open Spaces, Historic and Natural Areas Section 1, Fish and Wildlife Habitat Section 2, Vegetation Section 6, Open Space Goal 6: Air, Water and Land Resources Quality Section 1, Air Resources Quality Section 4, Sound Quality Goal 7: Areas Subject to Natural Disasters and Hazards Section 3, Landslides, Erosion and Unstable Soils Goal 8: Parks and Recreation Goal 10: Housing Goal 11: Public Facilities and Services Section 1, Public Safety and Fire Protection Section 2, Storm Water Management Section 3, Water Treatment and Delivery Section 5, Administrative and Government Services, Energy, Communication and Schools Goal 12: Transportation Goal 13: Energy Conservation B. City of Lake Oswego Community Development Code (Chapter LOC 50): LOC 50.02.001.1 Residential Districts—Low Density Zones LOC 50.02.003.3 Special Purpose Districts—Park and Natural Area Zone LOC 50.03.002 Use Table LOC 50.03.003.3.b Conditional Use Standards: Major Public Facilities and Institutional Uses Not Covered by Other Specific Standards LOC 50.04.001.1 Dimensional Table— Residential Low Density Zones LOC 50.04.002 Special Street Setbacks LOC 50.05.010; LOC 50.07.004.8 Sensitive Lands Overlay Districts LOC 50.06.001 Building Design The application is subject to the standards in effect on the date of the application submittal,September 27, 2012. 2 Staff has not identified any of the policies under the listed goals as regulatory policies but Applicant has nevertheless addressed policies to the extent they could later be determined to be regulatory. LU 12-0044 Page 2 of 39 LOC 50.06.002 Parking LOC 50.06.003.1 Access LOC 50.06.003.2 On-Site Circulation - Driveways and Fire Access Roads LOC 50.06.003.3 On-site Circulation — Bikeways, Walkway and Accessways LOC 50.06.003.4 Local Street Connectivity LOC 50.06.003.5 Transit System LOC 50.06.004.1 Landscaping, Screening, and Buffering LOC 50.06.004.2 Fences LOC 50.06.004.3 Lighting LOC 50.06.005 Park and Open Space LOC 50.06.006.1 Weak Foundation Soils LOC 50.06.006.2 Hillside Protection LOC 50.06.006.3 Drainage Standards LOC 50.06.007 Solar Access LOC 50.06.008 Utilities LOC 50.07.003.1 Application Procedures LOC 50.07.003.3 Public Notice/Opportunity for Public Comment LOC 50.07.003.4 Hearings LOC 50.07.003.5 Conditions on Development LOC 50.07.003.7 Appeals LOC 50.07.003.13 Ministerial Development Decision LOC 50.07.003.14 Minor Development Decision LOC 50.07.003.15 Major Development Decision LOC 50.07.005 Conditional Uses LOC 50.08.002 Minor Variances LOC 50.09.002.5 Compliance with Approved Permit C. City of Lake Oswego Streets and Sidewalks Ordinance (LOC Chapter 421: LOC 42.08.400-42.08.470 Streets and Sidewalks D. City of Lake Oswego Tree Chapter (LOC Chapter 55]: LOC 55.02.010 - 55.02.080 Tree Removal LOC 55.02.084 Mitigation Requirements LOC 55.08.020 Tree Protection Plan Required LOC 55.08.030 Tree Protection Measures Required E. Prior Approvals: DR 12-80 AN 10-93 PA 4-94 ZC 12-94 LU 06-0022 LU 10-0005 LU 12-0044 Page 3 of 39 IV. FINDINGS A. Background/Existing Conditions: 1. The project site consists of Tax Lots 700 and 790, which are approximately 6.78 acres in size and Tax Lot 3100, which is approximately 17.73 acres (Exhibit El). Tax Lots 700 and 790 have frontages on Carman Drive, a major collector street, and Stone Avenue, a local unimproved street. Tax Lot 3100 has frontages on Quarry Road, a neighborhood collector street, and Stone Avenue. 2. Tax Lots 700 and 790 are zoned R-7.5 and Tax Lot 3100 is zoned PNA. Surrounding properties are zoned and developed as follows (Exhibit E2): North CR&D, R-7.5 Commercial and Residential South R-5, R-7.5 Residential East R-7.5, Residential West R-7.5, PNA Residential and Natural Areas 3. Tax Lots 700 and 790 are developed with a reservoir (Waluga Reservoir 1) that was constructed in 1980 (DR 12-80) and two vacant single-family residential structures (Exhibit E2). Tax Lot 3100 is East Waluga Park and is developed with various park structures and play fields (Exhibits E24 and E25). 4. All three tax lots contain an RC district that was delineated in 2010 (LU 10-0005) [Exhibit E19]. Tax Lot 3100 also contains a Resource Preservation (RP) district in the southwest area of the site that has not been delineated (Exhibit F5). 5. Tax Lots 700 and 790 generally slope down to the north towards Carman Drive with areas of steep slopes located at the north end of site west of the driveway, the central area of the site and surrounding the Waluga 1 Reservoir which is encircled by a berm (Exhibit E2). Tax Lot 3100 generally slopes down towards the southeast with steep slopes in the northern portion of the site and flatter areas in the southern portion of the site (Exhibit E24). 6. There are a total of 582 trees that are five inches in diameter or greater on Tax Lots 700 and 790 (Exhibits E2 and F4). Tax Lot 3100 contains numerous trees in the northern portion of the site and around the perimeter. A full tree inventory was not conducted because only the northern portion of the site would be impacted by the proposed development. Exhibit E24 illustrates the location of all the trees that are five inches in diameter or greater in the vicinity of the proposed development on Tax Lot 3100. 7. The proposed development will connect to the Lake Oswego Finished Water Pipeline (hereafter "water pipeline") that was approved in 2011 (LU 11-0047) up to the east boundary of Tax Lot 3100. LU 12-0044 Page 4 of 39 V. PUBLIC NOTICE OF APPLICATION AND APPLICANT'S BURDEN OF PROOF The subject application consists of several requests, which are classified as major, minor, and ministerial developments. The resource enhancement project is classified as ministerial development per LOC 50.07.003. Ministerial decisions are not subject to public notice or opportunity to appeal. If this application is appealed, the resource enhancement component will not be reviewed with the appeal. A. Neighborhood Meeting: The applicant held a neighborhood meeting to comply with the requirements of LOC 50.07.003.1.f on June 7, 2012, for the minor and major development components of the proposal. The minutes of this meeting and the notification materials are included in this report as Exhibit F15. In addition, the applicant has held several other meetings with the Lake Forest and Waluga neighborhood associations and surrounding property owners to discuss the proposed project beginning in July 2010, as outlined in Exhibit F16. Ministerial developments do not require a neighborhood meeting. B. Public Notice to Surrounding Area: The City has provided adequate public notice and opportunity to comment on this application for the minor and major development components of the proposal, as required by LOC 50.07.003.3. No letters were received during the preparation of this report. Ministerial decisions are made without notice or opportunity for appeal. C. Burden of Proof: Per LOC 50.07.003.1.b, the applicant for a development permit shall bear the burden of proof that the application complies with all applicable review criteria or can be made to comply with applicable criteria by imposition of conditions of approval. The applicant has provided sufficient evidence to enable staff to evaluate the proposal. These documents are listed as exhibits at the end this report. VI. LOC 50.07.003.13— MINISTERIAL DEVELOPMENT(RESOURCE ENHANCEMENT PROJECT) A. Classification of Application LOC 50.07.003.13.a.ii(5) designates a resource enhancement project in an RC district as a ministerial development. LU 12-0044 Page 5 of 39 B. Criteria for Review of Application Per LOC 50.07.003.13.e.ii, for any ministerial development application to be approved, it shall first be established that the proposal complies with: 1. The requirements of the zone in which it is located; Dimensional Standards [LOC 50.041 Residential Low Density Zones [LOC 50.04.001.1] The applicant proposes to enhance portions of the RC district on Tax Lots 700 and 790 by removing invasive vegetation and planting native trees and plants (Exhibit E9). The proposed resource enhancement project does not alter the use of the property, nor does it affect compliance with any of the site development standards of the R-7.5 zone. This standard is not applicable. Overlay and Design Districts [LOC 50.051 Sensitive Lands Overlay Districts [LOC 50.05.010] The purpose of these districts is to protect the functions and values of wetlands, stream corridors, and tree groves on lands with environmental or natural significance. As shown on Exhibits E19 and E20, Tax Lots 700 and 790 contain an RC district that was delineated in 2010 per LU 10-0005. Resource Enhancement Project As discussed later in this report, the applicant is proposing to construct a 3.5 million gallon reservoir, access road and associated stormwater and tank overflow ponds as well as a water pipeline on Tax Lots 700 and 790. This development requires the applicant to designate a minimum of 50% of the delineated RC district on these tax lots as an RC protection area (RCPA), which is also discussed later in this report. The applicant proposes to enhance portions of the designated RCPA on Tax Lots 700 and 790 as part of the reservoir project (Exhibit E9), which must meet the requirements for resource enhancement projects in an RC district per LOC 50.05.010.5.c.iii(7) [the restoration planting areas outside of the RCPA are not subject to the resource enhancement requirements]. Per LOC 50.05.010.5.c.iii(7), resource enhancement projects in an RC district shall remove only invasive vegetation, and shall plant only vegetation within the RC district or RC protection area listed on the Lake Oswego Plant List (Plant List). Any pathways or structures proposed as part of a resource enhancement project shall retain existing trees. LU 12-0044 Page 6 of 39 The RC district on the site is characterized by mature second growth Douglas fir forest with scattered big leaf maples, however, the understory vegetation is comprised mainly of invasive species including Himalayan blackberry and English ivy (Exhibit F5). As illustrated on Exhibit E9, a total of 120,231 s.f.3 of the site will be cleared of invasive plants and replanted with native trees and plants on the Plant List. Exhibit E9 also specifies the native trees, shrubs, ferns and native ground cover seed mix that will be planted at a density of 17 shrubs and five ferns per 1600 s.f. plot in addition to native trees (density of trees is not specified). Within the RCPA, these plantings will be inclusive of the existing fir and maple trees. In general, the proposed plant varieties and spacing in the RCPA are acceptable, except that a condition of approval will be imposed to increase the size of the Oregon grape plants in the RCPA from 4" pots to one gallon size in order to allow for quicker establishment and better plant survival [LOC 50.07.003.5.a.iv]. Exhibit E9 states that all restoration areas are to be irrigated with a fully automatic irrigation system. Per LOC 50.05.010.5.c.iii(8), long-term irrigation is not permitted in the RCPA. A condition of approval will be imposed requiring the irrigation system within the RCPA to be temporary. There are no pathways or structures proposed in the RCPA restoration area. As conditioned, this standard is met. 2. The applicable Development Standards [LOC 50.06]; The following design standards apply to the proposed development. Weak Foundation Soils [LOC 50.06.006.11 According to the City's Soils Map, the site is in an area that is identified as potentially containing weak foundation soils. No new structures are proposed in the RCPA as part of the resource enhancement project. This standard is not applicable. Hillside Protection [LOC 50.06.006.2] This standard applies in areas identified as "Slide Area," "Slide Hazard," or parcels that have undisturbed slopes in excess of 12% and where minor and major development will involve proposed structures or ministerial construction of structures where the requirements of this standard have not been previously addressed. 3 Exhibit E9 states that the total restoration planting area is 120,231 s.f.;however,this figure includes 10,540 s.f.of mitigation area that is required as RC mitigation for the water pipeline proposed on Tax Lot 3100 as well as area that is not within the RCPA. LU 12-0044 Page 7 of 39 The subject resource enhancement project in the RCPA is a ministerial development that does not involve the construction of any structures in the RCPA. This standard is not applicable. CONCLUSION: As conditioned, the resource enhancement project in the RCPA meets all of the required standards. VII. LOC 50.07.003.14 AND LOC 50.07.003.15—MINOR AND MAJOR DEVELOPMENT (DEVELOPMENT REVIEW PERMIT, RCPA DETERMINATION, UTILITY IN AN RC DISTRICT, MINOR VARIANCE, AND CONDITIONAL USE PERMIT) A. Classification of Application Per LOC 50.07.003.14.a.ii(6), (12) and (16), construction of a structure other than a detached single-family dwelling, duplex, zero lot line dwelling or accessory structure which does not qualify as a ministerial development; determination of an RC protection area; and a minor variance are classified as minor developments. Per LOC 50.07.003.15.a.ii, a conditional use permit is classified as a major development. B. Criteria for Review of Application For any minor or major development application to be approved, it shall first be established that the proposal complies with: 1. Any regulatory policies of the Lake Oswego Comprehensive Plan [Applicable to Major Developments only); Applicable regulatory Comprehensive Plan policies must be addressed as part of the request for a Conditional Use Permit (CUP) on Tax Lots 700 and 790. Staff has not identified any regulatory policies but Applicant has addressed policies in Exhibit F1 to the extent they could later be determined to be regulatory. This criterion is met and no further analysis is necessary as part of this report. 2. The requirements of the zone in which it is located; Park and Natural Area Zone [LOC 50.02.003.3; LOC 50.03.002.3) This standard outlines the purpose of the PNA zone and prescribes site development limitations. Table 50.03.002-2 lists the uses allowed in the zone. Tax Lot 3100 (East Waluga Park) is zoned PNA. The applicant proposes to install an underground water pipeline through Tax Lot 3100 that would connect to the pipeline that will be constructed in the Quarry Road right-of-way abutting the park site to the LU 12-0044 Page 8 of 39 east and will extend onto Tax Lots 700 and 790 to the north (Exhibits E22 and E23). No other structures are proposed on Tax Lot 3100. An underground utility line is a minor public facility (LOC 50.10.003.2), which is permitted outright in the PNA zone. Because the pipeline is entirely underground, the site development limitations do not apply. The requirements of the PNA zone are met for the water pipeline. Use Regulations and Conditions [LOC 50.031 Residential Use Table [LOC 50.03.002.2] Tax Lots 700 and 790 are zoned R-7.5. The applicant proposes to construct a 3.5 million gallon reservoir and a water pipeline on Tax Lots 700 and 790 (Exhibit E4). A reservoir is a major public facility, which is a conditional use in the R-7.5 zone, and a water pipeline is a minor public facility, which is permitted outright in the zone. There is also an existing reservoir on the site that was constructed in 1980 (Exhibit E2). Per LOC 50.07.005.1.c, a use that existed before December 16, 1982, which is permitted only upon receiving a conditional use permit under the terms of this Code, is not a nonconforming use, but is without further action to be considered a conforming use. No modifications to the existing reservoir are proposed as part of this request. The criteria of approval for conditional uses are analyzed under LOC 50.03.003.3.b, below, and LOC 50.07.005 later in this report. Conditional Use Standards for Public, Institutional and Civic Uses [LOC 50.03.003.3.b] The proposed reservoir on Tax Lots 700 and 790 requires a conditional use permit (CUP). A conditional use is an activity that is permitted in the zone but which, because of some characteristics that are not entirely compatible with other uses allowed in the zone, cannot be permitted outright. In order for a CUP to be approved for the proposed development, it must meet the specific standards for public, institutional and civic uses in LOC 50.03.003.3.b in addition to the general conditional use standards in LOC 50.07.005, which are discussed later in this report. The specific standards for public, institutional and civic uses are discussed below. 1. Utilities, streets or other necessary improvements to the public facility shall be provided by the agency constructing the use. As discussed under the Utility Standard [LOC 50.06.008] below, all utilities are available or can be made available at the site. The site has access from existing public streets. This standard is met. LU 12-0044 Page 9 of 39 2. When located in a residential zone, access should be located on a collector street if practical. Access to the new reservoir will be taken from Carman Drive, a major collector street. This standard is met. 3. When located in a residential zone, lot area shall be sufficient to allow required yards which are at least two-thirds the height of the principal structure. The proposed reservoir is 49 feet in height (the existing reservoir is approximately 22 feet in height). Two-thirds of 49 feet is 32.7 feet. As illustrated on Exhibit E4, all yard setbacks for the proposed reservoir exceed 32.7 feet. This standard met. 4. The height limit of a zone may be exceeded to a maximum height of 50 ft. As illustrated on Exhibit E18, the height of the proposed reservoir is 49 feet. This standard is met. 5. Noise-generating equipment shall be sound buffered when adjacent to residential areas. Tax Lots 700 and 790 are adjacent to property zoned R-7.5 to the south, east and west. The applicant submitted a noise study for the proposed reservoir that concludes that the operation of the reservoir will produce little to no noise beyond the site boundaries (Exhibit F11). This standard is met. The study also discusses noise impacts associated with the construction of the reservoir, which are temporary impacts. Noise associated with construction activities is regulated by Chapter 34 of the Lake Oswego Code and is not a criterion for approval of the conditional use request. 6. Lighting shall be designed to avoid glare on adjacent residential uses. The applicant states that no new lighting is proposed on the site (Exhibit F1). This standard is not applicable. 7. Levels of operation shall be adjusted to avoid conflict with adjacent uses where practical. There will be no conflict with adjacent uses because the only operational activities associated with the new reservoir will be 1-2 trips per week to the site by maintenance staff(Exhibit F1). This standard is met. LU 12-0044 Page 10 of 39 Dimensional Standards [LOC 50.041 Residential Low Density Zones [LOC 50.04.001.1] Tax Lots 700 and 790 are zoned R-7.5. The applicant proposes to construct a 3.5 million gallon reservoir and water pipeline on Tax Lots 700 and 790 (Exhibits E4 and E7). The two existing vacant single-family dwellings on the site will be demolished (Exhibit E3). The current setback, lot coverage, floor area, and height requirements in the R-7.5 zone are listed in the matrix, below. LOC 50.04.001.1 Current R-7.5 Zone Standards and Analysis of Compliance Standards ( Minimum Requirements Proposed Reservoir Setbacks 356 feet(front) All Yards 32.7 feet* 35'-10" (west side yard) 184'-309' (other side yards) 146 feet (rear) Height 50 feet** 49 feet Lot Coverage 25% 14.4% Floor Area 58,011 s.f. 42,576 s.f. *Per LOC 50.03.003.b.iii,all required yards must be at least 2/3 the height of the principal structure. The reservoir is proposed to be 49 feet.Two-thirds of 49 feet is 32.7 feet. **Per LOC 50.003.3.b.iv,the zone height limitation for a major public facility may be exceeded to a maximum height of 50 feet(the maximum height in the R-7.5 zone is 32 feet on a lot with sloping topography). As illustrated on Exhibits E4 and E18 and summarized in the matrix, above, the proposed reservoir complies with all of the applicable site development limitations. Special Street Setback [LOC 50.04.0021 Carman Drive has a 40-foot special street setback that is measured from the centerline of the right-of-way. The existing right-of-way is 30 feet from the centerline, therefore, an additional 10-foot setback is required along the site's Carman Drive frontage. As illustrated on the site plan (Exhibit E4), the reservoir is 356 feet from the property line abutting Carman Drive. This standard is met. Overlay and Design Districts [LOC 50.051 Sensitive Lands Overlay Districts [LOC 50.05.010] The purpose of sensitive lands districts on the City's Natural Resources Inventory Maps is to protect the functions and values of wetlands, stream corridors, and tree groves on lands with environmental or natural significance. The standards of this LU 12-0044 Page 11 of 39 article apply to all lands designated as RP or RC on the Sensitive Lands Map and Atlas. There is an RC District on all three tax lots that was formally delineated in 2010 [LU 00-0005] and is illustrated on Exhibit E19. RC District Protection Area [LOC 50.05.010.5.b1 An applicant for a minor development permit on a property containing an RC district must designate a minimum of 50% of the delineated RC district as an RC Protection Area (RCPA). Once designated, the protection area may not be developed, except as provided in LOC 50.05.010.5. The water pipeline on Tax Lot 3100 is proposed to be located through portions of the delineated RC district on that site; however, because no tree removal is proposed and the applicant proposes to comply with all the applicable RC district standards, the applicant is not required to designate an RCPA on Tax Lot 3100. An RCPA is required to be designated on Tax Lots 700 and 790. LOC 50.05.010.5.b prescribes criteria for locating the RCPA in order to ensure that the most environmentally significant portion of the RC district is included in the protection area. The RCPA determination on Tax Lots 700 and 790 is based on the consideration of the following criteria: 1. After delineation, a minimum of 50%of the RC district shall be designated as the "RC Protection Area"; The delineated RC District totals 235,666 square feet in area and the RCPA proposed by the applicant is 118,315 square feet, which is 50.2% of the RC District (Exhibits E20 and E21). This criterion is met. 2. Except as provided in LOC 50.05.010.5.c, no development shall be permitted in the RCPA. The area outside of the RCPA may be fully developed subject to applicable regulations. Exhibit E8 illustrates the limit of the development and construction disturbance, which is located entirely outside of the proposed RCPA. The applicant indicates in the RCPA report and on the tree removal plan that no tree removal is proposed within the RCPA (Exhibits E8 and F5), however, Table 1 of the appendix in the RCPA report states that seven trees may potentially need to be removed from the RCPA. No trees shall be removed from the RCPA to accommodate the proposed development. Tree removal for other purposes may be allowed pursuant to LOC 50.05.010.5.c.iii(9) after obtaining the appropriate tree removal permit. LU 12-0044 Page 12 of 39 3. The location of the Protection Area shall be based upon the following criteria: a. The Protection Area shall link to other RP or RC lands on the development site and on abutting properties if such lands are present; As illustrated on Exhibits E19 and E22, a delineated RC district exists on Tax Lot 3100 (East Waluga Park), which abuts Tax Lots 700 and 790 to the south. There are no other RP or RC resources identified to the east, west or north of Tax Lots 700 and 790. The existing Waluga 1 reservoir is located at the southern boundary of Tax Lots 700 and 790 (Exhibit E2). The applicant has designated the tree grove to the south and east of the reservoir as part of the RCPA in order to maintain the contiguous tree canopy in these areas that connect to the RC district on Tax Lot 3100. Although the property to the west does not contain any mapped resources, the property contains a significant amount of tree canopy and the proposed RCPA on Tax Lots 700 and 790 connects to this existing tree canopy. This standard is met. b. The trees having DBH width greater than the median DBH within an RC district shall be included in the Protection Area. There are 421 trees in the delineated RC district ranging in size from 5" to 45" in diameter (Exhibit F5). For the proposed RCPA to meet this criterion, it must include all of the trees that are greater than the median diameter at breast height (DBH), which is 15 inches in diameter. There are 223 trees in the RC district that are 15 inches in diameter or greater. The proposed Protection Area does not include 84 trees that are above or equal to the median DBH (Exhibits E8, E21 and F5). This criterion is not met. c. The location of the Protection Area shall be designed to protect development from blow-down hazards. The majority of the RCPA maintains a depth of 150 feet or more, which reduces the occurrence of thin stands of trees vulnerable to blow-down hazard (Exhibits E8 and E21). The narrowest areas of the RCPA are south of the existing Waluga 1 reservoir and along the west property line, but these areas are connected to existing tree canopies to the south and west of the site. Additionally, the homes nearest to the proposed RCPA are along Parkhill Street to the south and the depth of the RCPA along those properties is approximately 90-145 feet. This criterion is met. d. The Protection Area shall protect steep slopes and resources close to water areas from potential erosion and water quality impacts. The entire site is sloped, but is most level in the southwest area where the reservoir is proposed to be located (Exhibit E4). Steep slopes to the north of LU 12-0044 Page 13 of 39 the proposed and existing reservoirs will be contained within the RCPA. There are no water resources on or close to the site. This criterion is met. e. The Protection Area shall protect wildlife habitat and travel corridors. The proposed RCPA is located to be contiguous with tree canopies on Tax Lot 3100 to the south and the abutting property to the west of the site, thereby maintaining contiguous wildlife habitat and travel corridors through and beyond the site (Exhibits E15-E16 and E21). This criterion is met. f. The Protection Area shall be designed to protect a contiguous canopy and a clustered configuration that does not fragment lands within an RC District. The RCPA is proposed to be located generally around the perimeter of the site in a clustered configuration; however, due to the siting constraints of the proposed reservoir, the presence of the existing reservoir at the southern end of the site, and the need to protect the steeper areas of the site, the RCPA is bifurcated. This results in the fragmentation of the existing RC district (Exhibit E21). This criterion is not met. g. The Protection Area shall maintain an ecologically viable plant and wildlife Community. The proposed RCPA protects large contiguous tree canopies on the east, west and southern portions of the site that connect to existing tree canopies to the south and west (Exhibits E15-16 and E21). The trees in the RCPA consist mainly of native second growth fir and big leaf maples (Exhibits E8 and F5). Staff finds that the proposed RCPA protects large patches of native trees, thereby maintaining an ecologically viable plant and wildlife community. This criterion is met. h. The Protection Area shall maintain the scenic qualities of the site. The project site has a distinct wooded character that contributes to the scenic qualities of the surrounding neighborhood. The proposed RCPA maintains a wide band of trees around the perimeter of the site; this protects the scenic qualities of the site as viewed from Waluga Park and the surrounding residential development. This criterion is met. As discussed above, the proposed RCPA meets all of the criteria for approval except subsections b and f, above [LOC 50.05.010.5.b.iii(2) and (6)]. These criteria require that the RCPA include all of the trees having a DBH greater than the median DBH within the RC District and that the RCPA shall be designed to protect a contiguous canopy and clustered configuration that does not fragment the RC district lands. LOC 50.05.010.5.b.iv recognizes that some of the criteria for establishing an RCPA may conflict on a given site. In such cases, the applicable criteria are balanced in order to protect the most environmentally significant portion of the RC District. LU 12-0044 Page 14 of 39 The trees with DBH width greater than the median DBH that have been excluded from the RCPA were excluded because these larger diameter trees are dispersed fairly evenly through the site making it impossible to protect all of the larger trees within a single contiguous RCPA (Exhibit E8). Additionally, the existing location of the Waluga 1 Reservoir makes it nearly impossible to prevent the partial fragmentation of the RCPA from the RC district on Tax Lot 3100 to the south because the reservoir is located very close to the south, east and west property boundaries where the main connection to the RC district to the south is located (Exhibits E15 and E19). The RCPA proposed by the applicant protects the existing narrow connection to the RC district on the south of the site and connects to existing tree canopy on the property to the west. The proposed RCPA also protects steep slopes and preserves the wooded character of the site by protecting trees around the perimeter that are nearest residential development and East Waluga Park. Staff therefore finds that the applicant has appropriately balanced the criteria for selecting the RCPA in order to protect the most environmentally significant portion of the RC district and that the proposed RCPA may be approved. The applicant should note that no future reduction in the RCPA will be permitted, unless the property owner(s) file for a modification to the original permit and establishes a new RCPA in compliance with LOC 50.05.010.5.b.ii that is at least as large as the previously designated RCPA, or demonstrates that the RCPA as originally designated has degraded through natural causes pursuant to LOC 50.07.008.4.8.a. The applicant will be required to submit a stamped survey of the RCPA. RC District Development Standards FLOC 50.05.010.5.c] This standard requires that structures, decks, and parking areas maintain a minimum 5-foot setback from the RCPA boundary and prohibits the placement of utilities through the RCPA4, unless tunneling under a resource where tree roots can be avoided and the functions and values of a resource will be maintained, or there is no other practicable alternative. If utilities are allowed to be located within an RCPA, the applicant shall restore and revegetate the disturbed area with plants identified on the Plant List, and mitigation shall be required pursuant to LOC 50.05.010.4.e through 50.05.010.4.g. As illustrated on Exhibit E21, the proposed reservoir, driveways, water pipeline and detention and overflow ponds are all set back at least five feet from the RCPA boundary on Tax Lots 700 and 790. Resource enhancement is proposed in areas of the RCPA identified on Exhibit E9, which staff has determined complies with the criteria in LOC 50.05.010.5.c.iii(7), as discussed previously in this report. On Tax Lot 3100, the applicant proposes to construct a water pipeline through portions of the RC district in the northern area of the site in order to connect the 4 Per LOC 50.05.010.5.c.i,development standards that are applicable to an RCPA shall apply to the RC district if no protection area has been established.As a result,the RC development standards apply to the RC district on Tax Lot 3100. LU 12-0044 Page 15 of 39 water pipeline at the east boundary of Tax Lot 3100 to the new reservoir on Tax Lots 700 and 790 to the north (Exhibits E22 and E23). The proposed location of the water pipeline was designed to avoid impacts to existing trees and does not result in any tree removal on Tax Lot 3100 (Exhibits E26 and F2). As illustrated on Exhibit E26, the pipeline alignment is located through the existing paved driveway and parking area in East Waluga Park, then continues on an existing dirt and gravel pathway and veers northward through a clearing before heading west to continue through to Tax Lots 700 and 790 to the north. There will be no net loss to the functions and values of the RC district on Tax Lot 3100 because no trees will be removed, the pipeline will be fully underground, and all of the disturbed ground area will be replanted with a native seed mix after construction is complete. As will be discussed under the mitigation section, below, the applicant is required to minimize impacts to the resource and to mitigate for any impacts to the resource. Mitigation Requirements [LOC 50.05.010.4.e through gl Approximately 10,540 square feet of RC district area will be impacted by the proposed water pipeline through Tax Lot 3100 (East Waluga Park) [Exhibits E22 and F3]. When utilities are proposed through an RCPA (or an RC district where no RCPA has been established) the applicant is required to first endeavor to avoid impacts to the resource by routing utilities through public rights-of-way and around significant resources wherever possible. Drainage patterns shall not be altered in the resource, or, if altered, shall be designed to maintain the function and values of the resource. As discussed in the applicant's narrative (Exhibit F1), the applicant conducted an exhaustive alternative analysis for siting the proposed reservoir and associated water pipeline, including the consideration of other sites. The alternatives were considered at a City Council meeting and the preferred option was selected based on a number of factors, including storage capacity, impact to trees and visual impact on surrounding neighborhoods (Exhibit F17 and F18). The proposed location of the water pipeline through East Waluga Park provides the most direct route to the new reservoir, does not necessitate any tree removal, and is located through property owned by the City. The pipeline does not alter existing drainage patterns because the disturbance area will be restored to pre-existing conditions after construction is complete. Staff finds that the applicant appropriately considered alternative site plans and locations and that locating the pipeline through the RC district on Tax Lot 3100 cannot be avoided and will not alter existing drainage patterns. If the applicant cannot avoid impacts, it must endeavor to minimize impacts to the resources to the greatest extent possible by considering alternative site plans and selecting the plan that is the least environmentally damaging, and assuring that there will be no net loss of resource area, functions, or values as a result of the development by mitigating for all impacts to the resource. As illustrated on Exhibit E26, a 25-foot wide disturbance area is identified along the pipeline alignment and a total of 10,540 square feet of the disturbance area is within the RC district. The applicant designed the alignment to avoid any tree removal on LU 12-0044 Page 16 of 39 the site by locating the pipeline on an existing gravel pathway, through an existing clearing and in between trees. The applicant also submitted an arborist report evaluating the proposed construction impacts to trees and recommending appropriate tree protection measures to avoid detrimental impacts to trees (Exhibit F4). Staff finds that the applicant has minimized the impacts to the resource to the greatest extent possible by identifying a 25-foot wide disturbance corridor that avoids the removal of any trees on Tax Lot 3100. The applicant will be required to submit a copy of the arborist report with the tree protection application and submit a contract with a certified arborist to oversee excavation activities within the tree protection zone of any regulated tree. Mitigation for impacts to tree groves is required at a 1:1 ratio. The mitigation plan must be prepared by a qualified professional and shall include a maintenance and monitoring plan. On-site mitigation is required where possible, taking into consideration the existing natural and human-made features of the site. If on-site mitigation is not possible, then off-site mitigation may be permitted in following priority: 1) within the same drainage system and within City limits, 2) outside of the drainage system, but inside City limits, or 3) outside City limits, but within the Lake Oswego Urban Services Boundary. The applicant submitted a mitigation plan prepared by ecologists from David Evans & Associates (Exhibit F6). As illustrated on Exhibit E9, the applicant proposes to mitigate for the 10,540 square feet of impacted RC district on Tax Lots 700 and 790 instead of on the park site. The applicant contends that adequate mitigation is not possible on Tax Lot 3100 because the disturbance area is a long, narrow corridor and the impacts to the RC district are in intermittent locations along the corridor, making it difficult to establish meaningful mitigation over the long term (Exhibit F3). Additionally, the pipeline area must be kept free of trees and large shrubs to allow for long-term maintenance of the line, so the mitigation area would be limited to groundcovers and low shrubs. The applicant instead proposes to mitigate at a 1:1 ratio with native trees, shrubs and groundcover in a consolidated area in the southwest corner of the reservoir site (Exhibit E9). This mitigation area is located within the RCPA and would also enhance the buffer area between the residential lots abutting the site to the south and the proposed reservoir. For these reasons, staff concurs that mitigation on the park site is not possible. The mitigation plantings consist of 17 shrubs and five ferns for each 1,600 square foot plot in the mitigation area (Exhibit E9). Staff is concerned that the plantings may be too sparse to meet the City's typical guidelines for plant spacing; however, because the applicant has not specified the number of existing trees or new native trees that will be planted per plot, it is difficult to determine whether the spacing is adequate. Staff recommends a condition of approval per LOC 50.07.003.5.a.iv requiring the applicant to increase the size of the Oregon grape plants from four-inch pots to one gallon size and to provide a revised planting plan that includes the average number of existing and proposed trees per plot and an adequate number of plants to comply with the City's typical spacing guidelines per plot. A native seed mix will be applied to the 25-foot wide impact corridor on Tax Lot 3100 (Exhibit E27). LU 12-0044 Page 17 of 39 The applicant submitted a maintenance and monitoring plan to be implemented for a three-year period after construction on the site is complete (Exhibit F6). The plan complies with the requirements of this section; however, the applicant should be required to illustrate the size and location of the sample plots within the 10,540 square-foot mitigation area. As conditioned, this standard can be met. Construction Standards FLOC 50.05.010.4.d] Compliance with these standards is required when any grading, clearing, or construction is proposed on a site that contains an RC District. The applicant is required to submit construction plans that demonstrate compliance with these standards. Applicable construction standards include staking the RC district and RCPA boundaries with permanent markers on the site prior to the placement of protection fencing; installation of minimum 6-foot tall temporary protection fencing at the delineated RC district or RCPA boundary; the requirement that no construction, demolition, grading or site clearing shall begin until after protective measures and erosion control measures have been inspected and approved by the City; and prohibiting the stockpiling of fill materials, or parking or storage of construction equipment within a resource district. Compliance with the construction standards will be assured prior to the issuance of a building permit or the commencement of any grading activities on the site. 3. The applicable Development Standards [LOC 50.06]; The following design standards apply to the proposed development. Building Design [LOC 50.06.0011 Structure Design— Residential Zones [LOC 50.06.001.2] The standards of this section are applicable to all structures in the R-7.5 zone. Street Front Setback Plane FLOC 50.06.001.2.b] The front profile of a structure is required to fit behind a plane that starts at the front setback line and extends upward to 20 feet in height, sloping towards the center of the lot at a 6:12 pitch up to the maximum allowed height. As illustrated on Exhibit E17, the proposed reservoir is well behind the street front setback plane, thereby complying with this standard. LU 12-0044 Page 18 of 39 Side Yard Setback Plane — Interior Yards (LOC 50.06.001.2.e] The side profile of a structure is required to fit behind a plane that starts at the side property line and extends upward to 12 feet in height, sloping towards the center of the lot at a 12:12 pitch up to the maximum allowed height. As illustrated on Exhibit E17, the proposed reservoir is behind the side yard setback planes on both sides. This standard is met. Side Yard Appearance and Screening FLOC 50.06.001.2.fj The development must comply with one of the side yard appearance and screening treatments: Maximum Side Yard Plane, Side Yard Features, or Screening. The applicant proposes to comply with the Side Yard Screening treatment along the west side wall plane. This treatment requires a minimum of one standard plant unit for every 50 linear feet of side property line or fraction thereof. Planting shall occur within an area that is defined by the length of the side elevation plus 20 ft. beyond the width of the building at either end, and outward 20 ft. from the side elevation of the building, towards the side lot line. According to Exhibits E9, E10 and F2, the applicant has selected standard plant unit B in Table 50.06.001-2 to meet this requirement. The length of the required planting area is 174 feet, which requires a minimum of four planting units. The existing and proposed plants comply with this standard. The east side wall of the proposed reservoir is at least 184 feet from the nearest side property line. The area between the proposed reservoir and the east side yards contains numerous existing trees and will be planted with additional trees and shrubs that will far exceed the minimum planting units in Table 50.06.001-2. Structure Design—Commercial, Industrial, Multi-Family and Public Use Development [LOC 50.06.001.5] This standard is applicable to development involving a public use structure and prescribes standards for the design and orientation of buildings and associated elements and site features, preservation of natural land forms and vegetation, and screening of mechanical equipment. Buildings are required to be designed to be complementary in appearance to adjacent structures of good design with regard to materials, roof lines, height and overall proportions. Building elements and site features, such as bus shelters, benches, awnings, lights, signs, windows, etc. are to be complementary in appearance to those buildings or structures for which they are associated and used to define the first floor retail cornice. Mechanical equipment is required to be screened or placed in a location where they are not visible. LU 12-0044 Page 19 of 39 The applicant proposes to construct a 3.5-million gallon concrete reservoir on Tax Lots 700 and 790. LOC 50.06.001.5.b.iii is not applicable because the reservoir is not a bus shelter and does not have drinking fountains, benches, mailboxes, etc. LOC 50.06.001.5.b.iv is not applicable because the reservoir does not possess any of the listed elements. LOC 50.60.001.5.b.v is not applicable because a reservoir does not have a first floor or retail cornice height. LOC 50.60.001.5.b.vii is not applicable because the reservoir does not possess any building elements. Because the proposed development is an uninhabitable water storage structure that is not open to the public, the building design standards that encourage or require pedestrian amenities, site features and orientation, such as awnings, decks, windows, lights, benches, and orientation of buildings, etc., do not apply [LOC 50.06.001.5.d through h]. Due to the sheer size and utilitarian nature of the structure, the main design objective under LOC 50.06.001.5.b.i is to minimize the visibility of the reservoir from the surrounding development as much as possible. Therefore, the relevant standards of this section in determining whether the design of the reservoir is complementary to surrounding development are setbacks, height, color, and screening and buffering. As illustrated on Exhibit E16, the reservoir has been sited to maximize the distance of the reservoir from surrounding development. The reservoir is proposed to be set back over 350 feet from the front property line, 146 feet from the rear property line, 35 feet from the west property line, and 184-309 feet from all other property lines. Although the structure would only be about 35 feet from the west property line, the dwelling on the abutting lot to the west is several hundred feet away and the intervening land is heavily treed (Exhibit E16). The reservoir site is mostly covered by a mature, second growth douglas fir and big leaf maple forest (Exhibits E14 and F5). The applicant considered alternative designs for the reservoir that were discussed with affected neighborhood associations and the City Council and which included the consideration of a shorter structure with a larger footprint (Exhibits F16-F18). The selected alternative is a 49-foot tall structure that would allow for a smaller footprint in order to maximize setbacks from surrounding residential development and reduce the number of mature trees that would need to be removed. As shown in Exhibit E8, tree removal is concentrated in the center of the site in order to maintain a significant buffer of existing trees around the perimeter of the site. Much of these treed buffers are 150 feet or more in depth and will be further enhanced by the planting of additional shrubs and trees (Exhibit E9). The applicant has identified two color options in shades of green for the proposed reservoir (Exhibit E18). Staff finds that either of the color options would achieve the objective of blending the reservoir in with surrounding treed environment. Electrical equipment, valves and other controls are proposed to be installed in underground vaults as illustrated on Exhibit E7. LU 12-0044 Page 20 of 39 Staff finds that the applicant has adequately demonstrated compliance with all of the applicable building design standards of this section. Parking [LOC 50.06.002] This standard applies to all development which generates a parking need. The proposed development does not result in an increase need for parking because the development will only generate 1-2 vehicle trips by maintenance staff per week which will be in conjunction with the existing parking need for the existing reservoir, there will be no staff stationed on the site, and a gate will be installed across the access drive to prevent unauthorized vehicle access (Exhibit E4). Parking for maintenance trips is accommodated on the site. This standard is not applicable. Access/Access Lanes (Flag Lots) [LOC 50.06.003.1] This standard is applicable to construction of a major public facility and prescribes standards for the design of access points. The determination of the location and configuration of an access shall be based on a traffic study, unless otherwise approved by the City Manager. Access to Tax Lots 700 and 790 is proposed from the existing driveway off of Carman Drive (Exhibit E5). The Engineering staff reviewed the proposed location and design of the access drives and finds that the access point meets the requirements of this standard. On Site Circulation— Driveways and Access Roads [LOC 50.06.003.2] This standard is applicable to all development proposing a new use or an increased use on a site when the development will result in the construction or increased use of private streets, driveways, or parking lot aisles. This standard regulates driveways, including width, slope, and other aspects of geometric design, particularly those related to emergency vehicle access. The applicant proposes to access the new reservoir on Tax Lots 700 and 790 from the existing driveway off of Carman Drive, which will be widened to 20 feet and paved with asphalt (Exhibit E5). A Fire Department turnaround is proposed at the end of the driveway. According to the Fire Marshal (Exhibit F13), emergency vehicle access to the site is adequate. All driveway approaches are to be located and designed so that the driver entering or exiting the driveway can see approaching traffic for a sufficient distance to make a safe entrance and exit. American Association of State Highway and Transportation Officials (AASHTO) standards shall be used in determining compliance with this standard. The applicant provided a plan illustrating the required sight distances from the driveway approach (Exhibit E5). Several trees on the west side of the driveway will need to be removed in order to provide the necessary site distance to the west LU 12-0044 Page 21 of 39 (Exhibits E6 and E8). The driveway approach complies with the sight distance requirements to the east. The maximum grade of a driveway for all uses other than a single family dwelling is 15% and there shall be a landing area where a driveway used by multiple drivers meets the public street. The landing area shall be a minimum of 25 ft. long and shall have a maximum grade of 5%. The applicant is requesting a minor variance to both of these standards in order to increase the maximum allowed grade of the driveway from 15%to 17% and to increase the maximum grade of the landing area from 5%to 6% (Exhibits E5 and F2). Except for the maximum grade for the driveway, the proposed development complies with the requirements of this standard. A minor variance is requested to the maximum driveway grade standards of LOC 50.06.003.2.b.iii(2) and (3), which is addressed later in this report. On Site Circulation— Bikeways, Walkways and Accessways [LOC 50.06.003.3] This section is applicable to all minor or major developments involving the construction of a structure other than a detached single-family dwelling, duplex or accessory structure. A pedestrian circulation plan is required for developments of one acre or more that provides connections between the proposed development and existing development on adjacent properties (other than via the street system), where feasible. Accessways for use by pedestrians and bicyclists shall be required when necessary to provide direct routes not otherwise provided by the existing right- of-way. The proposed development, a reservoir, does not generate any pedestrian or bicycle trips to the site (or an increase in vehicular traffic), therefore, the onsite pedestrian circulation plan requirement is not applicable to this development. [Because the site is a publicly-owned property and pedestrian traffic is not currently restricted, the applicant recognizes and chooses to accommodate the public benefit of providing a pedestrian connection through the site from Parkhill Street to Carman Drive. A new 10-foot wide gravel path at the end of the driveway off of Carman Drive will connect to the existing dirt path around the existing Waluga 1 reservoir. The applicant acknowledges that pedestrians may use this system of paths on the site as a more direct route between Parkhill Street and Carman Drive, but this is not a requirement under the land use criteria.] Local Street Connectivity [LOC 50.06.003.4] This section is applicable to the construction of a structure that is located on a parcel(s) of redevelopable land of 1.75 acres or larger. Development shall be designed so that streets and pedestrian accessways create connections that improve local access to the existing system and consider connections to adjacent developable properties. LU 12-0044 Page 22 of 39 The proposed development does not require the construction of a public street, therefore the standards in LOC 50.06.003.4.d apply. This standard requires a future connectivity plan to be filed with the City and recorded in the applicable County Clerk records showing how the location of future streets, access lanes, and accessways will provide for full development of the subject parcel as well as any abutting properties in order to meet the standards of LOC 50.06.003.4.c.ii through viii. Placement of structures are required in a manner that allows for the future street(s), access lanes, or accessways to be constructed, as well as an area sufficient to meet the required zone setbacks from the future streets Per LOC 50.06.003.4.c.vi, a future street or access lane is not practicable through the site because the slope exceeds 15% in the longitudinal direction of the projected automobile route and there is a large RC protection area on the site (Exhibits E5 and E21). According to LOC 50.06.003.4.c.vii, if the reviewing authority allows an exception to the requirement for full street connections, it shall require residential accessway connections on public easements or rights-of-way. As discussed previously, the applicant is constructing a driveway and gravel path that connects to the existing dirt path around the Waluga 1 Reservoir. This system of paths provides a pedestrian connection through the site from Parkhill Street to Carman Drive. Though the applicant is not required to construct an accessway at this time because the impacts of the development on the existing transportation system are so minimal and do not warrant such an exaction, this standard does require the applicant to submit a plan illustrating a future accessway. As a condition of approval, the applicant will be required to submit a plan showing a future accessway on the site to connect Parkhill Street to Carman Drive. Because the site is a publicly owned property, no public access easement is necessary and the plan does not need to be recorded in the County records. As conditioned, this standard is met. Transit System [LOC 50.06.003.5] This standard is applicable to new major public facilities located on a transit street or within one-quarter mile of a transit street and requires the installation of transit facilities and transit-oriented features that connect the development with the nearest transit street or path that leads to the nearest transit street. The site is within one-quarter mile of Kruse Way, which is a transit street served by TriMet bus route 38. The development of this site will not place sufficient additional demand on the surrounding street system to justify requiring sidewalk or other transit improvements because the development will generate only 1-2 vehicle trips per week. Such exactions would not be roughly proportional to the degree of impact imposed by the new development. This standard is not applicable. LU 12-0044 Page 23 of 39 Landscaping, Screening and Buffering [LOC 50.06.004.1] This standard requires major public facility development to provide a minimum 20% of the gross land area in landscaping and requires screening and buffering to mitigate for lighting or noise impacts, to screen public or private utilities or storage areas and parking lots, and as separation between dissimilar uses. Street trees are required along all street frontages and existing trees may be utilized to meet this standard provided they are located to provide for a full streetscape of trees. The total site area of Tax Lots 700 and 790 is 6.78 acres, which requires a minimum of 59,067 square feet in landscape area. As illustrated on Exhibit E9, the landscaping area on the site exceeds this standard (the RCPA area alone is 118,315 square feet). The site contains an existing mature douglas fir and big leaf maple forest. The development has been designed to preserve these existing trees around the perimeter of the site in order to provide screening and buffering of the development from the surrounding residential lots (Exhibit E16). One exception is in the southeast corner of the site abutting the unimproved right-of-way of Stone Avenue, which is at the end of Parkhill Street and directly across from a residential lot (Exhibit E8). There is an existing berm between this residential lot and the existing Waluga 1 Reservoir to the east that is planted with mature trees. Most of these trees are proposed to be removed in order to construct the water pipeline. The applicant proposes to replant this berm with 10-12' tall fir and cedar trees at approximately 10 feet off center. Additionally, new trees and shrubs are proposed to be planted in a large area around the proposed reservoir to enhance the existing mature forest and to replant in areas that were cleared for development purposes (Exhibits E9 and E10). In general, staff finds that the existing and proposed landscaping provides a sufficient buffer between the development and the surrounding residential lots, except on the north and west sides of the stormwater detention pond in the northwest area of the site (Exhibit E16). The detention pond is a part of the "use" of the site, since it is required by the development on the site. This detention pond is approximately 20 feet from the property line abutting the lot in the northwest corner and there are relatively few trees or shrubs in this area. Staff recommends a condition of approval requiring trees and shrubs to be planted in natural groupings to provide for screening and buffering of the detention pond from the abutting property to the northwest. The site has three frontages: one on Stone Avenue (unimproved right-of-way) at the end of Parkhill Street and two on Carman Drive (Exhibit El). There are existing trees to remain after development that provide a full streetscape of trees along the Stone Avenue frontage and along the easterly Carman Drive frontage. Several trees are required to be removed on the west side of the westerly Carman Drive frontage in order to provide the necessary sight distance for drivers exiting or entering the driveway (Exhibits E6 and E8). There are existing trees on the west side of the driveway to remain that qualify as street trees, however, there is an approximately 45-foot gap between trees#283 and 290 along the street frontage that is outside the sight distance triangle and which should be planted with street trees (Exhibit E14). Staff recommends that this be required as a condition of approval. LU 12-0044 Page 24 of 39 As conditioned, this standard is met. Fences [LOC 50.06.004.2] Fences and walls in residential zones shall not exceed six feet in height, except that the maximum height of a fence that is located within ten feet of a property line abutting a public or private street or an access easement which serves more than two lots shall be four feet. Berms, when used in conjunction with fences or walls, shall be included in height determinations. Per LOC 50.06.004.2.b.x, these height limitations do not apply to fences that provide security or are accessory to the use of a major public facility. As discussed in the applicant's narrative, a six-foot chain link fence is proposed around the perimeter of the site, a four-foot fence is proposed on top of the berms around the water detention facilities, and a gate will be installed across the entrance to the driveway on the site. Because the proposed development is for a major public facility, the fence height restrictions do not apply. Lighting Standard [LOC 50.06.004.3] This section is applicable to all minor or major development which results in increased use of public and private streets, public pathways and accessways, or parking lots. The proposed development does not result in an increased use of public or private streets because the development will only generate 1-2 vehicle trips by maintenance staff per week, which will be in conjunction with the existing vehicle trips to the site for the existing reservoir. There are no public pathways, accessways or parking lots on the site. This standard is not applicable. Park and Open Space Contributions [LOC 50.06.005] This standard requires that major public facility development provide 20% of the gross land area in open space, which may be provided as a combination of reserved land and landscaping that meets the requirement of the landscaping standard, above. As illustrated on Exhibit E21, the RCPA (reserved land) is 118,315 square feet in size, or 40% of the gross land area. This standard is met. Weak Foundation Soils [LOC 50.06.006.1] The site is located in an area identified as potentially having weak foundation soils on the City's soil inventory map. The applicant submitted a geotechnical report, which finds that no weak foundation soils are present on the site (Exhibit F8). This standard is not applicable. LU 12-0044 Page 25 of 39 Hillside Protection [LOC 50.06.006.2] This section applies to the construction of structures in areas identified as "Slide Area," "Slide Hazard," or parcels that have undisturbed slopes in excess of 12%. This standard prescribes standards for cuts and fills on land with unretained undisturbed slopes in excess of 12% and limits development on undisturbed lands of over 50% slope. The site is not identified as a slide area or slide hazard on the City's Soils Map; however, there may be undisturbed slopes in excess of 12% on the site. As illustrated on Exhibit E4, there is a narrow band of sloped land that exceeds 12%, but is less than 50%slope where the reservoir is proposed to be located. The applicant submitted a detailed geotechnical report outlining construction details for cuts and fills necessary to construct the proposed reservoir in compliance with this standard. (Exhibit F8). This standard is met. Drainage Standard for Major Development [LOC 50.06.006.3.b] This standard requires that drainage improvements be provided to ensure that the proposed development will not adversely affect surrounding properties. In addition, this standard requires design features to minimize pollutants from entering the stormwater system and that the intensity of runoff rates are maintained at their natural undeveloped level. The determination of whether or not the application complies with the requirements of this standard is under the review authority of the City Manager or City Engineer. The Engineering staff has made the following findings and conditions of approval: The applicant submitted a preliminary drainage report prepared by a registered engineer (Exhibit F7). The proposed site development will increase the impervious area of the site by 21,900 square feet. The proposed storm management system shows a storm water quality/detention pond located approximately 200 feet north of the new reservoir that will provide water quality treatment and detention for the access drive and tank roof. A small filter strip will be provided adjacent to the lower section of the access drive to treat runoff that is not captured in the proposed pond, resulting in approximately 140 linear feet of the driveway being treated with a filter strip. The surface runoff will be collected in a ditch inlet at the bottom of the access drive and be connected to a new piped storm system to be extended approximately 250 feet from the east along Carman Drive. A detention pond located immediately east of the reservoir is also proposed for the new reservoir overflow and periodic drainage of the tank. A control manhole structure will be designed to limit flow from the pond so that available downstream capacity will not be exceeded. The drainage design for conveying water from a periodic draining of the tank is based on a two-day duration to drain the emergency drainage storage volume. LU 12-0044 Page 26 of 39 Engineering staff finds the preliminary storm drainage design for management of the newly created impervious surfaces complies with the provisions in this standard. Prior to construction, final design drawings and calculations will be required to be submitted for review and approval by the City Engineer. As conditioned, this standard will be met. Solar Access [LOC 50.06.007] The Maximum Shade Point Height Standard [LOC 50.06.007.2.c] applies to all structures in the R-7.5, R-10 and R-15 zones and protects structures located to the north of the site from shading. Staff calculated the maximum shade point height and found that the reservoir complies with this standard because the proposed height is less than the maximum allowed shade point height. This standard is met. Utility Standard [LOC 50.06.008] This standard applies to all development requiring connection to utilities. All utility services are available to serve the site and the proposed development will be connected to existing services (Exhibit E7). Per LOC 50.06.008.4.d, utilities shall be installed underground, unless exempted by the City Manager (or his designee). Compliance with this standard will be assured at the time of building permit application. 4. Any additional statutory or Lake Oswego Code provisions that may be applicable to the specific minor or major development application; Conditional Use Permits [LOC 50.07.0051 A conditional use (CUP) is an activity that is permitted in the zone but which, because of some characteristics that are not entirely compatible with other uses allowed in the zone, cannot be permitted outright. In order for a CUP to be approved, it must be shown that the requirements of the zone are met; the site is physically capable of accommodating the proposed use; and that the functional characteristics of the proposed use can be made reasonably compatible with uses in the vicinity. The applicant proposes to construct a new reservoir (Waluga 2 Reservoir) on Tax Lots 700 and 790. A reservoir is a major public facility, which is only allowed as a conditional use in the R-7.5 zone. There is an existing reservoir (Waluga 1 Reservoir) on the site that was approved in 1980 (DR 12-80). Per LOC 50.07.005.1.c, a use that existed before December 16, 1982, which is permitted only upon receiving a conditional use permit under the terms of this code is considered to be a conforming use without further action. Because the Waluga 1 Reservoir existed prior to December 16, 1982, the use is LU 12-0044 Page 27 of 39 considered to be conforming to the code even though a formal CUP has never been obtained. Requirements of the Zone As discussed under the zoning standards previously in this report, the proposed development meets the requirements of the R-7.5 zone. Physical Capability of Site to Accommodate Use The total area of the existing and proposed development comprises approximately 28% of the site (includes reservoirs, driveway, and detention ponds). The proposed development does not result in an increase in parking requirements and generates only 1-2 vehicle trips per week, which will be in conjunction with the existing vehicle trips to the site for the existing reservoir. Staff finds that the proposed development can be physically accommodated on the site. Functional Characteristics of Use Are Reasonably Compatible The functional characteristics of the use shall be made to be reasonably compatible with the uses in the vicinity. The potential impacts to uses in the vicinity that can be expected from a major public facility use include visual (visibility and scale of structures and privacy of neighbors), noise, light, and traffic. As illustrated on Exhibit E16, and discussed under the structure design standard previously in this report, the reservoir has been sited to maximize the distance from surrounding development and to maintain existing mature trees for screening and buffering between the site and the abutting residential properties. Much of these treed buffers are 150 feet or more in depth and will be further enhanced by the planting of new shrubs and trees (Exhibits E9 and E10). Additionally, the reservoir is to be a dark green color in order to blend with the surrounding environment (Exhibit E18). The applicant submitted a noise study (Exhibit E11) that concludes that the operation of the reservoir will produce little to no noise beyond the site boundaries. No new lights are proposed on the site. The development will generate only 1-2 vehicle trips per week by maintenance staff which will be in conjunction with the existing vehicle trips to the site for the existing reservoir and the access driveway will be gated to prevent unauthorized vehicle access (Exhibit E4). Staff finds that the applicant has demonstrated that the conditional use criteria are met. LU 12-0044 Page 28 of 39 Adjustments, Alternatives, and Variances [LOC 50.081 Minor Variance [LOC 50.08.002] Minor variances are small changes from the Code requirements that will have little or no effect on adjacent properties or users. The applicant is requesting a minor variance to LOC 50.06.003.2.b.iii(2) and (3) in order to increase the maximum allowed grade of the driveway off of Carman Drive from 15%to 17% and to increase the maximum allowed grade of the driveway approach from 5%to 6%. Variations to the maximum grade of a private street or driveway are classified as a minor variance per LOC 50.08.002.3.g. A minor variance may be granted if it is established that: (1) The granting of the variance will not be detrimental to the public health or safety, or materially injurious to properties or improvements within 300 feet of the property; and, The use of the driveway will be limited to maintenance staff that will make 1-2 vehicular trips to the site per week. A gate will be installed across the entrance to the driveway to prevent unauthorized vehicle access. The gate will be located approximately 40 feet back from the driveway approach in order to allow a vehicle to stop entirely outside of the right-of-way to operate the gate (Exhibit E4). The Fire Marshal has indicated that proposed development complies with access for emergency vehicles (Exhibits F13 and F14). Due to the limited use and access to the site by vehicles, staff finds that the granting of the proposed variance will not be detrimental to public health or safety. In determining whether the requested variance would be materially injurious to nearby properties or improvements, the potential impact to properties that are within 300 feet of the site are considered [LOC 50.08.002.2.a.i]. The proposed reservoir does not generate any trips to the site by the public and the driveway will only be used by City staff for maintenance purposes 1-2 times per week which will be in conjunction with the existing vehicle trips to the site for the existing reservoir. Staff finds that the requested variances to increase the grade of the driveway on the site will have no impact on surrounding development and therefore will not be materially injurious to nearby properties or improvements within 300 feet of the site. (2) The proposed development will not adversely affect existing physical and natural systems such as traffic, drainage, Oswego Lake, hillsides, designated sensitive lands, historic resources, or parks, and the potential for abutting properties to use solar energy devices any more than would occur if the development were located as specified by the requirements of the zone. The proposal will not adversely affect existing physical and natural systems such as historic resources, Oswego Lake, traffic, drainage, or hillsides because the site does not contain any historic resources and is not located near Oswego Lake, the proposal LU 12-0044 Page 29 of 39 will not result in any increase in traffic and complies with the Drainage and Hillside Protection Standards, as discussed previously in this report. The proposal will not adversely affect designated sensitive lands because the applicant designated an RCPA on the site and all of the proposed development is located outside the RCPA boundary and required 5-foot construction setback (Exhibit E8). The development will not impact any abutting property's ability to use solar energy devices any more than would occur if the development were located as specified by the requirements of the zone because the reservoir complies with the maximum shade point height standard, as discussed previously in this report, and the driveway grade has not impact on shading of structures on adjacent lots. For all of the above reasons, staff finds that the requested minor variances to increase the maximum allowed grade of the driveway off of Carman Drive from 15% to 17% and to increase the maximum allowed grade of the driveway approach from 5%to 6% meets the criteria for approval. Streets and Sidewalks [LOC Chapter 421 This Chapter authorizes the City Engineer to make specific street and sidewalk improvement recommendations after taking a variety of policy and site specific factors into consideration. The proposed development will generate 1-2 vehicle trips per week to the site which will be in conjunction with the existing vehicle trips to the site for the existing reservoir. This limited trip generation will not place any additional demand on the surrounding street system to justify requiring the applicant to construct sidewalk or road improvements because these exactions are not roughly proportional to the degree of impact imposed by the new development. As a result, this standard is not applicable. City of Lake Oswego Tree Code [LOC Chapter 551 This Code requires approval of a permit for removal of any tree five inches in diameter or greater and prescribes protection measures for trees to remain during construction. Only those trees which must be removed in order to site proposed improvements or to accommodate landscaping may be granted tree cutting permits [LOC 55.080(2)]. The applicant is requesting to remove 195 trees to accommodate the proposed development (Exhibits E8 and F4). Tree Removal Type II tree removal may be granted a permit if the following criteria are met: LU 12-0044 Page 30 of 39 1. The removal is for development or landscaping purposes allowed pursuant to the City Code; All of the trees proposed for removal on the site are requested to be removed because they are in the footprint of the proposed reservoir, water pipeline or site improvements, including grading and tree removal necessary to comply with sight distance requirements (Exhibits E4-E8 and F1). As discussed previously in this report, the proposed development complies with all applicable Code standards. This criterion is met. 2. The removal will not have a significant negative impact on erosion, soil stability, flow of surface waters, protection of adjacent trees, or existing windbreaks; The purpose of removing the trees is to develop the cleared area with a reservoir, driveway, detention ponds and associated landscaping. Per LOC 52.02.040, an erosion control permit is required prior to conducting construction, landscaping, removal of vegetation, grading, filling, excavating, etc. that disturb 500 square foot or more of land surface area on a site. After the trees are removed, erosion control measures will be installed on the site and maintained until reservoir and site improvements are constructed and landscaping is installed. For these reasons, the removal will not have a significant impact on erosion, soil stability or flow of surface waters. The tree removal is concentrated in the central areas of the site and the majority of the remaining trees around the perimeter of the site maintain a depth of approximately 150 feet (Exhibits E8 and E16). In addition, these perimeter trees are contiguous with existing tree canopies to the west and south of the site. This criterion is met. 3. The removal will not have a significant negative impact on the character, aesthetics, or property values of the neighborhood, except when alternatives to tree removal have been considered and no reasonable alternative exists to allow the property to be used as permitted in the zone; and The majority of the site is covered by a mature Douglas fir and big leaf maple tree grove (Exhibits E2 and E14). The removal of 195 trees, although a significant number of trees, will not have a significant impact on the character and aesthetics of the neighborhood because existing stands of trees around the perimeter of the development will maintain the wooded character as viewed from surrounding properties. Accordingly there is no significant impact on the character, aesthetics, or property values of the neighborhood. Staff further finds,that even if there were a significant negative impact upon the character and aesthetics of the neighborhood, because the majority of the site is treed, it is impossible to site the proposed development without impacting a large number of trees. Staff finds that the applicant has sited the development in a manner that reduces the impact to trees to the greatest extent possible by LU 12-0044 Page 31 of 39 utilizing the existing driveway, siting the reservoir in a location where there is a lower density of trees, and siting the detention ponds where an existing structure is to be demolished and where there is an existing clearing. For these reasons, staff would further find that no alternative exists to allow the property to be used as permitted in the zone. 4. The removal is not for the sole purpose of providing or enhancing views. The removal of the trees will not improve any view, and, as stated above, they are being removed for development purposes. Staff finds that the removal request complies with the applicable criteria and can be approved. The applicant will be required to apply for a verification tree removal permit for the 195 trees approved prior to issuance of any building permits. Mitigation Any tree approved for removal shall be mitigated at a minimum 1:1 ratio. In general, mitigation trees must have a minimum 2-inch caliper diameter for deciduous trees and be a minimum 6-8 foot tall (excluding leader) for evergreen trees. The applicant submitted a mitigation plan meeting or exceeding the minimum size requirements to replant 255 trees on the site (Exhibits E9 and E10). A copy of the mitigation plan shall be submitted with the tree verification application. Tree Protection Tree protection fencing is required when a tree protection zone or drip line of a tree that is five inches in diameter of greater is within the construction zone, whether on- or off-site. As authorized by 50.08.020, a tree protection application and plan should be submitted for staff review and approval prior to conducting any activities on site, including, but not limited to, clearing, grading, landscaping or excavation. Tree protection fencing shall be placed at the tree protection zone, which is the zone required to protect the critical root area necessary for the continued health of the tree. The applicant shall propose the tree protection zone for each tree, for review and approval by staff. As required by LOC 55.08.030(7), no construction, excavation, root pruning or other activity shall occur within the tree protection zone unless directed by an arborist present on site and approved by the City. There are several trees on the site that will require protection measures during construction and because construction activities are proposed within the drip lines of many of these trees, an arborist will be required to prepare the tree protection plan and be on site to oversee construction activities within the drip line. The applicant submitted an arborist report outlining protection LU 12-0044 Page 32 of 39 measures for trees to remain on the site (Exhibits E11 and F4). A copy of the final report shall be included with the tree protection plan. All tree protection plans submitted shall clearly illustrate all areas impacted by construction activities on site (including landscaping), the location of temporary fencing around the tree protection zone is within the drip line of a tree, or other tree protection measures as recommended by a certified arborist. In addition, signs should be placed on the fencing and notes added on the construction documents that informs the site contractors about the necessity of preventing damage to the trees, including bark and root zone, and that no materials should be stored nor compaction occur within the root zones of adjacent trees. As conditioned, this standard can be met. 5. Any applicable condition of approval imposed pursuant to an approved ODPS or prior development permit affecting the subject property. All conditions of approval imposed by prior approvals will remain in effect and will become conditions of approval for the present request, except as modified by this decision or those conditions that have already been completed. VIII. CONCLUSION Based upon the information provided by the applicant and the findings presented in this report, staff concludes that LU 12-0044 complies with all of the applicable criteria and standards or can be made to comply through the imposition of conditions. IX. RECOMMENDATION Staff recommends approval of LU 12-0044, subject to the following conditions*: [*These recommended conditions of approval contain conditions related to the ministerial development (resource enhancement project), in addition to the minor and major development components. In the event of an appeal, staff will issue a revised decision for the ministerial development, with the conditions of approval related to that approval decision. Staff will advise the DRC what conditions of approval should be removed from the recommended conditions of approval because they did not relate to the minor or major development.] A. Prior to Issuance of any Building Permits, the Applicant/Owner shall: 1. Apply for a demolition permit for the existing structures on site. The applicant shall note that this may require an asbestos report from a licensed agency to the satisfaction of the Building Official. LU 12-0044 Page 33 of 39 2. Submit final site and building plans for review and approval of staff that are the same or substantially similar to the building elevations and materials illustrated on Exhibits E4-E7, E12-E13, E17-E18 and E26 to the satisfaction of staff. 3. Submit final engineered construction drawings for the public improvements for review and approval by the City Engineer. Drawings shall conform to the City's designs standards and the drafting specifications found in the City's booklet "CAD Standards and Design Requirements," May 2006 edition. The plans shall include the following: a. Design of the public storm main extension in Carman Drive from the existing storm manhole located approximately 250 feet east of the site. The design shall include plan and profile of the proposed storm line. b. Design of the on-site public storm drainage facilities as generally shown in Exhibit E7, including conveyance lines (plan and profile), storm quality and detention ponds, landscape plan for the ponds and swales, pond cross sections, filter strip along the driveway and details for all control structures. 4. Submit final storm drainage report prepared by a registered engineer for capacity of all conveyance pipes, sizing of the on-site quality and detention systems and downstream analysis. 5. Submit a final Operations and Maintenance plan for the public on-site storm facilities. 6. Submit a final landscape and mitigation plan for review and approval of staff. The plan shall be the same or substantially similar to Exhibits E9, E10 and E27 with the following modifications: a. Increase the size of all of the Oregon grape plants in the RCPA from 4" pots to one gallon size. b. Specify that the irrigation system within the RCPA shall be temporary. c. Provide a revised planting plan for the 10,540 square-foot RC mitigation area that specifies the average number of existing and proposed trees per 1,600 square-foot plot. After including the average number of existing and proposed trees per plot, the number of proposed plants and ferns per plot shall be increased if necessary to comply with the City's typical plant spacing guidelines per plot. d. Illustrate the location, size and species of additional trees and shrubs to be planted in natural groupings on the north and west sides of the stormwater detention pond to provide adequate screening of the facility to the abutting property to the northwest. LU 12-0044 Page 34 of 39 e. Illustrate the location, size and species of additional street trees at the proper spacing for the species in the gap between trees #283 and 290 as shown on Exhibit E8. 7. Submit a revised maintenance and monitoring plan that illustrates the size and location of the sample plots within the 10,540 square-foot RC mitigation area. 8. Apply for and obtain a verification tree removal permit for that 195 trees approved for removal. The verification tree removal application shall include a copy of the approved tree removal and the mitigation plans (Exhibits E8-E10). 9. Provide a written agreement between the applicant and a certified arborist demonstrating that the arborist will review the final site, utility, grading and landscape plans to assure long term survival of all trees to remain, and will be present on site at any time during excavation, trenching, grading, root pruning or other activity within the tree protection zone to ensure proper protection of trees. A copy of the arborist report (Exhibit F4) shall be submitted with the tree protection application. 10. Submit a stamped and signed survey map showing the RCPA boundaries as illustrated on Exhibit E21, including the 5-foot construction setback from the RCPA boundary. 11. Submit a site plan illustrating a future accessway on Tax Lots 700 and 790 to connect Parkhill Street to Carman Drive. B. Prior to the Final Completion and Inspection, the Applicant/Owner shall: 1. Complete all storm drainage improvements required by Condition A(3), above. 2. Submit certified "as-built" drawings of public storm drainage improvements conforming to the City's standards for record drawings. 3. Install all landscaping, RC mitigation and mitigation trees as required by Condition A(6), above. Any variation from the approved planting plan requires prior approval from the City of Lake Oswego Planning & Building Services Department. C. Miscellaneous: 1. The applicant/owner shall maintain the 10,540 square-foot RC mitigation illustrated in Exhibit E9 in accordance with the maintenance and monitoring plan (Exhibit F6), as modified by Condition A(7), above, and shall provide an annual report to the Planning and Building Services Department on October 315t of each year for a three-year period, commencing on the October 31 following the date of final completion and inspection of the development. The report shall be prepared LU 12-0044 Page 35 of 39 by a qualified professional and shall document site conditions with narrative and pictures. Code Requirements: 1. Expiration of Development Permit: Per LOC 50.07.003.17, the development approved by this decision shall expire three years following the effective date of the development permit, and may be extended by the City Manager pursuant to the provisions of this section. 2. Tree Protection: Submit a tree protection plan and application as required by LOC 55.08.020 and 55.08.030 for review and approval by staff, including off-site trees that are within the construction zone. The plan shall include: a. The location of temporary tree protection fencing, consisting of a minimum 6-foot high cyclone fence secured by steel posts around the tree protection zone, or as recommended by the project arborist and approved by the City. b. A note stating that no fill or compaction shall occur within the critical root zones of any of the trees, or that if fill or compaction is unavoidable, measures will be taken as recommended by a certified arborist to reduce or mitigate the impact of the fill or compaction. The note shall also inform contractors that the project arborist shall be on site and oversee all construction activities within the tree protection zone. c. A note that clearly informs all site contractors about the necessity of preventing damage to the trees, including bark and root zone. The applicant and contractor(s) shall be subject to fines, penalties and mitigation for trees that are damaged or destroyed during construction. d. A sign shall be attached to the tree protection fencing which states that inside the fencing is a tree protection zone, not to be disturbed unless prior written approval has been obtained from the City Manager and project arborist. 3. Tree Removal in RCPA: Tree removal within the RCPA may only be permitted as allowed by LOC 50.05.010.5.c.iii(9). 4. Erosion Control: Per LOC 52.02.040, the applicant is required to obtain an erosion control permit prior to conducting the following activities on a property or site including, but not limited to: construction, landscaping, removal of vegetation, stockpiling of soil or construction debris, grading, filling, excavating, trenching, drilling, transport of fill, utility work, etc. that disturb 500 square foot or more of land surface area. Note: 1. Development plans review, permit approval, and inspections by the City of Lake Oswego Development Review Section are limited to compliance with the Lake Oswego Community Development Code, and other applicable codes and regulations. The applicant is advised to review plans for compliance with applicable state and LU 12-0044 Page 36 of 39 federal laws and regulations that could relate to the development, e.g., Americans with Disabilities Act, Endangered Species Act. City staff may advise the applicant of issues regarding state and federal laws that the City staff member believes would be helpful to the applicant, but any such advice or comment is not a determination or interpretation of federal or state law or regulation. The following signature block is for the approval of the ministerial development (resource enhancement project) only. Prepared by: P ft P Jessta Numanoglu /F Date Senior Planner Reviewed by: Evan Boone Date / Deputy City Attorney Approved by: C (Th 7 ( 12 j Leslie Hamilton Date Acting Assistant Planning Director EXHIBITS: A. Notice of Appeal: (No current exhibits; reserved for hearing use) B. Findings, Conclusions and Order: (No current exhibits; reserved for hearing use) C. Minutes: (No current exhibits; reserved for hearing use) D. Staff Report: E. GRAPHICS/PLANS: El. Tax Map E2. Site Survey of Tax Lots 700 & 790 (includes overall site plan and enlargements) E3. Demolition Plan E4. Master Site Plan E5. Circulation and Access Plan LU 12-0044 Page 37 of 39 E6. Grading and Drainage Plan E7. Utility Plan E8. Tree Removal Plan (includes overall site plan and enlargements) E9. Landscape and Resource Enhancement and RC Mitigation Plan E10. Tree Mitigation Plan (includes overall site plan and enlargements) E11. Tree Protection Plan (includes overall site plan and enlargements) E12. Construction and Staging Plan E13. Erosion Control Plan E14. Aerial Photograph of Tax Lots 700 & 790 E15. Aerial Photograph of Tax Lots 700 & 790 illustrating Limits of Construction E16. Aerial Photograph of Tax Lots 700 & 790 illustrating Proposed Development E17. Front and Side Yard Setback Planes Elevation Plan Graph of Proposed Reservoir E18. Elevation Drawing and Color Swatches for Proposed Reservoir E19. RC Delineation Map of Tax Lots 700, 790 and 3100 (LU 10-0005) E20. RC District Map of Tax Lots 700 & 790 E21. Proposed RCPA on Tax Lots 700 & 790 E22. Unified Site Plan of Proposed Finished Water Pipeline on Tax Lots 700, 790 and 3100 E23. Aerial Photograph illustrating the Proposed Reservoir and Finished Water Pipeline on Tax Lots 700, 790 and 3100 E24. Topographic Survey of Area where the Finished Water Pipeline is proposed on Tax Lot 3100 E25. Existing Conditions Maps of Area where the Finished Water Pipeline is proposed on Tax Lot 3100 E26. Site, Grading, Utility and Erosion Control Plan for the Finished Water Pipeline on Tax Lot 3100 E27. Vegetation Restoration Plan for the Finished Water Pipeline on Tax Lot 3100 F. WRITTEN MATERIALS: Fl. Applicant's Narrative, dated June 12, 2013 F2. Applicant's Supplemental Narrative, dated August 14, 2013 F3. Applicant's Supplemental Narrative, dated September 12, 2013 F4. Tree Inventory and Protection Plan, dated September 6, 2012 F5. RCPA Report, dated September 11, 2013 F6. Resource Enhancement and RC District Mitigation Report, dated September 11, 2013 F7. Preliminary Drainage Report, dated May 24, 2012 (Updated August 8, 2012) F8. Geotechnical Report, dated May 31, 2012 F9. Traffic Control Strategy, dated September 5, 2012 F10. Construction Blasting Overview F11. Noise Study, dated June 11, 2013 F12. Construction Management Plan F13. Fire Marshal Memorandum, dated October 3, 2012 F14. Memo from Fire Marshal, dated May 22, 2013 F15. Minutes and Public Comments from June 7, 2012, Neighborhood Meeting F16. Neighborhood Coordination Documents F17. Minutes of February 22, 2011, City Council Meeting F18. Summary Table of Reservoir Alternatives presented to City Council LU 12-0044 Page 38 of 39 G. LETTERS Neither for nor Against: (G1-99) None Support: (G100-199) None Opposition: (G-200+) None Date of Application Submittal: September 27, 2012 Date Application Determined to be Complete: September 13, 2013 State Mandated 120-Day Rule: January 13, 2014 LU 12-0044 Page 39 of 39 Y kn n � �yti • ; `'-< 21 E07Aa ' } *aaY ;, k.a va 'v 1 k Y _ `z< LAKE SWEGj } " < t > x r ^,<, S E 1/4 N.E114 SEC.7T25.R.1E.W.M. • :,< ,omF K x, C ' " <` ti y > ', *\. ~. CLACKAMAS COUNTY �� v y v s ' { xYxr ,% >>'>�. A<rt� 4{r''� .' ` \'' v `-''r ti-., D.L.C. x >>Y` K:; ~ - a >�{{ }^ �' }. < ^ ' x CHARLES BROWN NO.64 Ct%.1 "; C >�. rY� ` 'y� ;'SEE MnP-2 < ' 4`..",, :,�i;, 'V 7'>.,'r • ,,Y,k,a r x Y x hYr .c ; i4 t�-h> v ♦ a x n'{ x '< r w ti ♦ l CancelleU Taxlars ,. _<r,} ..v r �4,1�, `k r, <. i, .�u h y X,r.�,x x. 5 ,� ) ,.,,,.*A).,:;„:„ .� '•E > >~ �y_r`x a �� ' s�xK.. +f .< �< <5 a �{ct•s.•�r Y wA" J so1•• 100 - xS, ,'�✓ hX. • �r r h� k Sd tF �?'n 1 , v h / K i '4 ioo� ri,i<�4 r.S <«,�'`{�>/, v�'y??/._ Cl i, - ,._yr �� -•+, i {' f§t'��'2`; rant 508 .(n"�<{ 'C`S `r , ,,,�y /'-Y l...roc• y aa..k, `.m i"x ; n�.3 .y SEB ;r rtiJ r r`k r r' .iv kk •! l`K. �1`\� :' :C.f Y~ �',h �yY ' yY Ifv �! {� 't'E. "r t" .w + . C.A C ,, _J`f {f�h Yy 1,V, '> ''§�YrY Y ?,,,,t x>T?,•xh�;,.l FJ� ��.%' YB a„ ..� rY' a 'PSI,M-.AStir„ NG+ 111 �`,. i <' ? Y- �} 74 5ts :me \\ i 516 i � 200 \ .h j,�,T . ^r 1 .X +�k�:{;.� �,f'C s rsx7 •s„•, 'TA P,1.S - ---- Parcel Bounder/ ? r� h, _ f e Y r {W --Pnle Road ROW •%;,� 4r,f>'X x-. Cx,,.Xxxa , (•� eIJJ •527 •r i. ;r• }> f <. 515 1 k+sm t i ,, a __-Hletonuel Sauna. ;- -,%S.�k x}�x ter' *\Y h". • .1W o�. "`!S`'� *� i• w," t.: . Al _ ;+u- Rem9ea caa.w. '�'1 Y S ".1 ' xirb'C {• �!�� R. , f t. irsr s Q*•. 1"- , '•516"Y• hA 524,..r. 300.mow... `l 0 Ta¢Ced.Un.e �' i r r�' ? ?��,,Ef'�v?h, C�• �,{tt.+' : �' 19"„ W, _ Y`� h '° 1 ++aP lydak } yam? ..„ y �a�))�C�-•x r, ,� �,r<, C s,t aan + r^q v ` a Z 0. trelerunes ?'•i V .) YV }.` � A,i-e'K qn - ,(,,e1,...., ,,e� `� ``\j�\ ��11 y *513 4 a 14 v�A• n"N. s sni ®' _ 276 O O Lard Um Zonvq i,,� ,\Vy ...... ��} lye` y`kY ›..„ ,>T> 1 i5zp MD*520 ssnY � c�i y, ' . �0 w..r ,` ri \ ,:� teoo ; .�.. +a; ?0 21 n rJ L'.�ii.' o Comer fn -- v i £ . 7110P" �r\° ' A a I 4." , UKCI ! zaoo"•h - - , 1 _Section comer :'•G iy �� ] l�>* i I; I�. i f a11 p pi i -tn6lh Um ,el —Gend Lot Line I OP X .ry y�n� b ' M +PARKHILL m + � ' -'oLC Lim y STREET Fy.?�(Yr n�+xi� .427m....."" 7.6Uu". •. r !.. ar'w,PLSS 5.clion Urns ��, ?` � ran pu ytp� ' • ,, MN ""w• li ♦� Hi.+one Corridor 46' y r_ ,lYa• > d :! + \,S�J§ a ziun p ± k Neon.Gunder am Y I �x^�:�✓,�l /. • ,5 14 _�.+3.- - .`�i�l w.1p o7J:�o•7g t l f hn Cv. T �/h \ +7 0, ...w. a Dl� I i f,� t. • :; ram >} 1 ...J }}Awvx ,f h� {7, 1�� . kc,..„..._. 1111)) �� ti -� ! - ^ ., j �-y %• `T -i X x• 4 1 rn C y} , y, k �>' �'V } c >kxT. ew yvy y; ynXx T r x amo �''',7 .>'�Y:s[ T),~ {kT.-'1,-K n +•ram Ile LY .s n�-.hi,,}i}�,�:`_>,j x` r L THIS MAPRPvsEs oN is FOR ESSMENT x� X r x ,x,fx,,>Wu ..i '. 1. :1�� l } �Y� > y � �w _ 2 1 E 0?AI7 { ,,:>. �y"' r , e.';\ ` >•> y->, r -> y RI Y v' ).- + AI:'!. Pc ,,-{Y%,' 'S t 4 ,G�y� x k ' x x'r x^ K h `` .�'C .1 ;�� X a ✓ 4a .Y LAKE OSWEGO Y . h.�., !. ' . 1 `. U>.} Y . .. . h n .. ,�} !.�. Y Y ,/4r { ! . .u�' ) `r'Y ,. v"1T- r 2 // I Sse V '' l�— III I MAP 2 DIE 5,110 {IFp I,. M{v 2,,]AD* ^„�r,-, AST NdLuca b l I I IE * 11'- i{N',°4 too q }II rnn for�M I g ** *'Fm�w*�k **: �c,�*uAP z FE ra 4 $ 8 OP 2'PE 7AE TAx LUT 50M L ti - 1 * * * `� rl- g /_ S1cRYtBEYr�m� I[E �.®e % * :1 d • MAP 2E]4p ® m P m ® * Z $ R '}{ —' * * k EXISTING WALLIGA tn * m �{ —~ TA%LOT 6tlo �� �{** F Q) RESERVOIR11 r - g `W\\� • —` MAP z 1E 7no - *® s�* 'Ic * [ $S ' FEL=3[I22' q -11 �' • — 51 * $ * *** * B * * * '3 i� *Itc Q ` \ m** * * m * ** * n ;sg x * [ agate a 5.@ „ a 1 +3.T+&s '�xesl�'w'W Imes *" * m * * gy* * s .` Ifs - mil , TAX LOT 000 * rIL* * * ® * * * m os q i� N MAP a 1E TAo I * �w Mil 8a I FAA Q� I ) 1 t; /r • _� 1L_J 11® ii,..///, * ;P:i*.4F* '* ,*0 9 * ** ,41, i. iii.r of: r o * ef, * wct a f. / •f '� ,� 1„l[c f *d * +iQ' m .yr;'ea� iaF __ __ ti , I'I* * f4[ * ,EL- „x LOT flop J -- _-' I 0 --4 c2� 64, MAP 3�E1]M I * * MAP LOT ]AO I I /p 1 L y l `� * SITE PLAN o o {a aW __ aii CC w ! 1 TOPOGRAPHY iGEND, • Damn simsr 15cxu65m5 fld cVV V{Lv[ @ MnuY vac, x [NOFnm,axe O. ® s5�*gnF++,KMmou- _ ,x uMr M purr STATEMENT ® mrzmiG-0Box O ieswlel¢M W xe!£ lY EKE mmW{xe TVO'EW[mE I oAss m mows rut ixm woo x z meal sties mna-namly eesm [ VVrle eiva¢anlx UAV FFm Lma1m Iasi POA SAYS ® mECenc mu. 1[§ mamld[xsPp DG WEER vuNE bFFwswus]x¢ —� ATM 1¢ 5. X,xmw{ral•PRi mMrts mm 5.1.. V✓gY{nw tv ms¢o msY¢ s{tt5 W Gle{h�nut - uzc1mV mu.MAsk,s ® iva.oU[Woo m U V[nrndmo s�ero ial VI uienFe re L IEL�u es 11P'"TVs Vs Dams[mmepR SKitlI Aw aSyse0s rw.�s«ID Sr Mpyry m MT u eWS M¢WWWID M{s oeru s 011,1.0dc ¢Is SOLE 551515 qNm mua zRYMW an-Mo GI W{DrA MM+ftllf � lORNR4w UME mA'AfiNifTP'SOLE rAnm[ am MI mns{N[ f➢FICA Y u aVI FIW xC rem, ® 0.Ecm�c ERA lE LAME 2,OW ® vurtn ME. ��{4 isFs ss unmanxoum S.W.em'cv.NE ¢{[cvNM maow en m ue'mp0'![WfMna[b wsi, {v m�5ryu wUisu rx[ (dle.- ID,mMwM+vvNaVV',=tT ISI E® 2EClme rmnxFssnles u GUY{xwtx a eeLLAve E— uNttmaanm P01. nm-afe:s m4Fl[Ag41i M[WFxa VaIM pA raY w{v. Is 1 wens.VANS o POLE MMP eox uo BMW M.PI,..suwmro-.11.6R m[i.[c{e»,.e{eau ® - —e— wne [aP OAS ux[ Weea PAiw lame sum•,zan, 'CI. veA[n Pose +Ncnpx ben mcv ry vxsmpmuxe MO TV us s s5SEvrvin WAN...All ME xer¢uaeq��ro7 Fx a tx 0 unxe Pas Q enure an °b 0.£M[wl PxKNFGr�16. FIG— 75076 a E9 E{s ME. 0 unuTY ea. Q MIT{nr me M{N11mi FIG—i 'PE 55ra.., PRELIMINARY - NOT FOR CONSTRUCTION SOFT EXHIBIT E.2 LU 12-0044 40 I el asa 1f-xL SNP ON as 1.1.3e -a- ((11 r� r Ca I. r P. ed 1.901} 3n se owonmam —e 13f1fi NM)tm ! - 3/r We%Am.x•+s wuowmiuw�.i u..3e3✓Rim I * } YFN, 3MN rr.eV4wls pxM`b]W. R�6es o¢ H0/�3h f15 ONtl7� eltL 't. Itig I\7Y�316g3�difd At. • fT in�nLrm owuwaL ' r11 /i 1 4 gry� 1 BIS y ! LpS iw rtu •,• I I SSe 1� L S em amrm. C�YY''3� OGZB 3.90,t0.8eg I I tIS �*! 2 fn 1 95 �xJJ'' R �B v 1! 111 cc>�F ' 6 ON m«ww eoMIs 4.. g. SSO ms.intro El eee ..1 rzSt { m,wx Naas atm..4 •66 11 _. 1 Il "'. a• LmrMn °w 9Y4� I; " 1 66e I J I 1 rxr L9t ouas.erm wB rn It7 �{y� yyQQ an.96n }.1 t0e 1 SLS^" 9mYVK 0 a • • • • • . gt•` I. i9.�SCBea r a.wuu o�Beiai xx�le in, � 11DeyL�1a1 t Il v.oNw 1Aimuurrren�n oY ..�r •r S1.3 FL 9L4 M.9Y,ILel :.VWi��' TT� ` Avn•...rpn 6 F f s. ry.e gLSB 3.LL aAN 3.1..n. • X ene em svL * t 91* _ uiuen ry moon,urwn Qn L• G• - 1 m�..e't ra. xoe urvn 4g Vll ii On 0.9 5� Mr -4;. a 'S •�`'4 % -� 9. `L9Y LPP* no mew 9oo.rru IN y. LLB `1S 1 9£ ace 496 WO aA D R o r-I. n \t �iti asa sns' e9* 1:k' 9 Lt 9 a.wz S. e C _ r — lit " - a1,.1..n L . 9a no. F asa ;,„.a; ., ..z I u� ' '° :.runl.`.N"..6.rx r mas ot.x'runny a3. "w` ma-.non e �i ` 9rt• ♦ N.ia L n41ex Lkxin ua.naew...- L..w N -! - Orr b ___ _,4 ='.L�. ... L ..........1.....0.7.4.' vimww en Arwu.i saa�3 mgr..enux.v ,S9't£Z �_. i4sp a5( .yv AL ki 5.1111xw .2511.>mom wr.01.eaaa^mwn ed ni m fTl WI _ - '' sy".',,.' to vu m..L.`tea.�. ,.�n.•3..3511L00 an irn 41.Z.1 MI can=nom gl 8 a / _ rBec .• a*sr es N013.3. O a 16110Z... n s see_ SN3113lY15 A11111f1 .311 anzn. 61 h1,5 •} ez rsz mea.M mama wu o9a uaea< me 1uazse / 93 / WNY •mil I _ \ I6 7 �ese ",„ e3awvm.,.,„¢:n¢wiov-awan�aorprtn .wmen rv�wu wwe • / l. ` ' H w s�� _�� o '6e -i"' 1 0� —fteiuvr---- nz.cu'°"am""—"w"ex / r. a a �� \ ae r• see 1c wrw.l.e ()k3`S3�ANdtl2IJOd01 �` `\ maw N gun / ���� P S •�_ E' \ \ �`\\ eT i'�i om naki.1.-nM4 .... ,..,1PVrd 6� � �ra@ B / A/' ' •� ` , yam 3.6 _ G t","i , SO f p, • p / \--- eddy`` .S 11,19=- _ _ ti ` •w,+ a /Na`Ya'.roe W � f �'ro na ii z / / KrmB as V "�` ~� 4. a // „1Nd11SC 3.313 Ixs y` ~ in [l Nor a-Ic-L1 E 'Z sy..-.. 1 133F6 a-x, I m o,i r dw Lis NSn� in a `TMuisgud €a 1 .rrz'e'oea.r / i aui_9aLl#rxL L7r �xn xmw ree £�} ` ' /.� Y.sY S�$'y�� 1 i w w6 ue LLt OfLI 9LZ1 0 u; e6 OD 9T: 333666 .Sl •i ,, SB _u. 69R LSGI 9101^ 886y }� 66,, B pper� • .. 6C5 BLf r'Z. 6961 p57:{Z gl � 35l^ ..i6 �` � - L9S �£1..._. 'LL 59ZL OZ9 w�S,��:LOI I 066 LCb*BLBSL � IL6�.r4 �siyll y ILL." fill �an y� I 6201e) ILOI`w£ I Of6 Sb OZB t a iE Ilk •} L9i :: 'I�:a1 '7cL:Z I. £L 11B21 .8L57.[ [PL eLL.t^ 9Z01* no,* -101 LWr � 506 9f6, 616 tt\ 11 x n[ V LC LOU* 0621 LIOIa f?66 E:J LCB v el M I6 n 1,996.Ore ,/y Z.1 1621. t a, .01 c AOL y 0191.�" /' 90OI GG a, „et n �aa' ' ga•L. �190 �}' , oc./ Ko173 a00t74 s`y tl 808 I weL r`1 COSI^'"{�} 1 " 06z1 [I[ x-LON `9°.3' 106 b996 9• fl4rl 'ruY i6Zl 71 }� , z Y w+n XHHr C OOC ' 9LEL C Den Z #BYery ' {±'y 91[ I 0004 9175`-L* CID IL+Oi.vwi I n b- av0o0rrlVG •.,:LEi LZiflt[ 6C 5LSL .zL, LiLIG.:321 llZl1_ L* e., SIC OJOL rWl* B68i� ZIP x OY --II y [!, 12L a �y t. , D fiEYI GI # Rx f •z 4:r9 60LLF.10 IIL, p(� .600 116* r Q • E9Y[ ;a L£I 4 1 .>,/ O a6*u r � � ZKl � LLG J�'iC #i1P a C I O device ero —I 11 Y.v> 61t a L 866 G66,' �' -1 K'ue3n^xe I ZZCI a .}� £IZt a1zs OIL aro �J J we„um. Itsl C6LI^ LOeV}vr��9oL �?'y 1 r �!y LL k "'39L 4. sae "° p 2 I 1 , rE 7 OZfI.f 4£fs 4.� K1.* Lt _ _ • 20L1' f GW ox0 dls at6'LIY iL {,' ln�rnx}en ❑ (� C681 rT' .lZlTl S 6LL�e, GS. �L ^ �I iO 0 (n LK V L , a w� e CL2! -'__ 6p 9 3 .22 g L e]$�C.esJ ac'� L °c°" x rs'-I ;�rr"w'm ' 41 IOC it-- ��'!!}} e9 5 69 �69 }�} /J V a l fK Gf£l% OHC4 0 LLI x Z . ~II C9 a a �tE9 Iwv� Z DTI OYCI "Olt. LKL^" T .4 5 Z6a 1 I76. N '‹ a e.6 W 9a9L tr9£l -689 m m fos eM x.e im ''''12. ,,4 +'9L t F_ L` 1 0a9 ti4a9 e99 a 5^ A + syCl n�EY9CL Y15:r7 • • ' . S 1 Y v6 1/ g 69C1 k 5 Gs9 1✓ 8Lf1 MI 99CI�` I J Ea9 EEC 06G I 9l (?� i 55 . - p _ *T �C—LECI , l Y9G z .„0 --\ ./y \ {.� C99 ., ao:l0or:rvL 9 swd,, ,y „,, 526116 d111. II L6-Gc` 499?3 p 9LC1 YZYI" 3w ec -,.. Opt 69L \J�/,�,�y, y� �6 q BCI 9 ta. I 0 OLL'L�' II Idµ„ K ' pgg�L 584 ?$ ml y.¢1 CM k 89C y 1 6i jF -li• I 'GL` 0 n'i 4ECL I * \ I C r6€ 0, \ 6� sas BREP n§§§��� " L] '. zLEI J fLr \ fies MO y. Yak • `� ze4 �' 8C LCCL; � 9BCL ILiL m L YL46 1 E \ ,,. _. 1/ 10 11 r u }� vEti:19 9 rl (6�6ys 45 K 'L.� 96C 98CI'^' eGE I 5:.18S�ry ri9 9 4 x r99 b 9a•L¢1:� 7t*6LL .9LL*�,(—LtL 4 62 ._ ++.-YF , 44 l6 (��ypY I Ig 7� j L �9 __ 1 e orL b ott Ooe�` 1 1 . EBSI S:af !. ": 69.6L5 _zs g,,ceN• IYIa e: ! r 1 f!y A 1 ti9 `� (L� -ero 'rle furl Clbl { V I pLS Zlf G:r• �.a� x v, WC lm na 1 ^"�B-___ - Y 69Z fLE 5tf . 1l4 O-9:ar.eR ' eZg 3L wl1f.a.-LI21, 1 LI-9S4 ,vA1'r2la ON 93r 11-11-2t i c (1 " c ' waLS'°9AeaL 133 o t- . qr- acalTi o y I klM3h aNbl I V II .. gee lbasJ I '1 49 I I it n i I 1 '1* it 4 Bess • V�y.�-'rT--� 3 1 1 ti r7 "MA 7,:i �4= ig \ I e fl I VI 1 a rl 00. rat.• AI,L ' me 3 z s —�_ 17 aLIZ G:iF G9G1�f,.., 6 1 A G Ig3 1 w I - - , x� Wpik6:: lll QN. 5� 'CGICSSI�i r �854A — lx ._ - r x a O Q 990E 6[2I ,.I n w/w — i � e All ° m o D ALs1 '1' 4II9 — mil PO .9 Am1lsl!3 wn�R'a991 N mlirAn A rn >tel ,SF so L/l 2�. r+ xi CL91 Obi•AI..' maer�ioi rvi p 2Z91 I- -rj 6I9 to I W61�AT N+i .. %M$i K o I•• g ....1 ,.. e�1 � ` n xmn itc.i* tl921 1 Y i mr 3l cc.,ryit ua.a.l •1l 121 ! 15 I I kk � i 1 1091 191 5 b0ii�l. kW, Het!; •' . . —I MIL LSI �!'5 ((?��'� y� Pi I C091�i 0: g- S x 9Gt1 pg64:a3 eE�y,L Zee�6 der 3ivi xYl gpp,,d yy��Il .a• 1 ui_ i3C ..1 ,� 6LG1 1 IS I EI01 9SZ4 8SZ1 • OL6 4p 196 #'#IL968 yE _, I66 Gb6(?\ l 41. 8t6 il~ ! A➢SI N 1 ...E Z9Iil S25 • f.JBY666- ♦./2x ztt, .•9 la T it 1 k S9Ll ', I 9lyb_GLy6 �I iG �' sc6 3t.i w[A 6� SSl E92 r'LSLL y `t.TGKL6 73 fs l �{ ae re6 �^'� (�'y o 4 i as-KO I 1K Am • �L L?4 y rirci Hi 6 Lt8Ea5 NOW,: `��bLb 092E �'y ? L96 mo LC09 AwNi ( OM- 9L1 • obs�:,9 9y enISILLe / O. 0L 0l 0 ` rc xivde f) 4L6 ty y� eL L21 ' 5`.•Lis ., OCiI' 9K21 b1;;' .1A �c Gig „ * p�pte bBtl ,11, k �. . .. ., L 89L!�.`ur, IBZI K LI[I�y 1, 226y[, LB v. {� 9051 4A *r4B61 ZI it`` #�L .017�Z M F: . sBc TS !LM1 lfB 6E k <26 G�Sp41;11 ma�yy ¢ Bfbn� BZ ^ 4LB —ILEA ;� 7i I,,,,* , q0L ...... `v�219L (-LIMA ,r n M6 6r�a OL6 W 5 t FF • FF.a s ea 44 Ra§ EXISTING W UGA —__ & „Z- RESERVOIR1 — - FF OD 191'' i. w ea d—EL iaatl, .r�NOTE mEEHousE -.- --- �NOTE I �S Y �u' E us i • • I fi • e. V>- �„p ti w� Nq xw ti ,Iy Q w 8,. ` � oti • ti w oureuldNn W LEGEND: OECD COD PEE �S SITE PLAN 4' Ea BD 1. PE nNP CONCRETE PAD TO DE REMOVED .17. ENRON.WE ray REFER TO RCPA REPORT AND MODRED T.15 THAT RH=THE TREE CANOPY,RESOURCE AR. ®, BOUNDARY.TREE MAMA.PEAR.AND TREE Enm � mil 64,mg cknom RAH r-e RN er, ra PflOJECT w. 175070 FIG-2 PRELIMINARY - NOT FOR CONSTRUCTION jr EXHIBIT E-3 LU 12-0044 00 9 aF 1 ` „ aye :am \ eaAr3 - CHECK VALVE .` 11 VA VAULT LVE I 9 1"WR2 TANK OVERFLOW VAULT _' DETEMION POND _ �� /� - 20'ACC€SS GATE =C GRAVEL ®C 7 _` 'J t CHECK YALVE e ACC ESS • h. .- VAULT Q nil V` -_ PATH \3' y� i p63 4'GREEN 11I c f el, VALVE VAULT ._.f - —--. V ,, 11`„EE CHAIN LINK 1 11 `k ix @ # .- fsf - FENCE t' - - SW STONE AVENGE J9 .D "� - . CLNIYPROVEO) mm 1g- I 2f)'WIOE ASPHALT A ir, , -ELECTRICAL ' a ACCESS ROP➢ \ ' AND MI- - COROLSOP 6 • 20'ACGESS ENCLNTOSURE GATE - - , M- �.. ill ,r M y-�_ a sty - y .. I fa Cr yg� 12'WIDE L 4 •-"-pCCESS _ VALVE P' GATE VAULT WALUGA RESERVOIR NO�2 - .) SETBACK asses• h MG +e - sErBACu VI I~+ d FFO EL 3(125 40. 14E.3.5 J q HEIGHT 49 ,.- _ .; I w W age j STORM o. ,�� C7 Ir ti CI ILLI y 7 a DUALITY r w � vine CP DETENTION "l 1 err �S ti , POND .114wn rk' Vh. Jrn R xI� IX�4'GREEN 10'WIDE GRAVEL SETBACK .• •JI 0,..., Q FENCE, CHAIN LINK - - ACCESS 3Y-10.Y LU 1}+ .-.,FPATH - F-, - - N CO 1.114.7 WV O . 1 DATE 018-114 41. m MASTER SITE PLAN i Pro av -- 175070 PRELIMINARY - NOT FOR CONSTRUCTION FIG 3 SHEET OF T }r ' f / + I Crr / / t l r- - ' •I ' 3' -f E � NOTES: ', I L; 1Zr W 10_•"2 /I Y • 5 y ~�\ :x FCCE95 REQUIREDPEDE5TRIAN g@$g! f - 'I 1 '. - '- 1- `.+�#•T r I. R.NO b14SITE PARNNJG 2 ti e 1 �, r 1 fy `.N •� * fiRr',t 4, yfi%` -` 3 ONLY PUBLIC TRANSE 4" F I '1 l ,, ,\ LOCATED WITHIN 11G MILE 15 m l "t4�' A�� �� TRIMET ROl1TE 385TOP AT f-`,a l /1���•6- `r ,I? .,,, ✓+ INTERSECTION OF I{RUSE WAY N&,,' / ,, � I .., -. d79+4%p,r, ,77 �11 ANocARMANDRrvE. d 8 r I } T T^'�;;-f �3 'L ,,--4,4^., / ',I,i N ;_G --," 'Lrl17, %/ 4.CONTOURLWES SMOWNARE to } L Yam_ ;I P , l,'/+i a ! y rye. 1 I WW I p• AV, AT 1 FOOT INTERVAL. 1 g / - r �_ ,I miry �, I y, a .1, . v .. • l' ,y.'1 + � r`;`� ! -� I z 3 I •a. I' ew I $!s :�!. >e1jiE ,L, *A * r/ IL,v 4Lsi > 4 P5 I11I 1.+1 ��'` '1 i,r k, rr;ti•ti, , r�i Tl�*r y 'Fr ,r/ y,8�1' 'I,.! 1\ COKSFTEMPDRur' r//I ! f' -3r + - I,� Jrry.' �� �,t1�+ i ACCESS RODN /:Ir'I'�l 44,, ' /x -- ,,o, 1F,AL }1 I ,J4 .,, y k` , ','.:t , I',r 5 • y I -�f , ( ; I ,� ,„_.L._ '-A Lvr,ff `r, - .-l 2LT WILE AGGEss = y 11 a\ \\ r V I r ! /I ! !! !/; +!rr r',,,,:,..,A,' I I , , 'GRAVEL M` 21' 1 GATE AT END OF V } '} N. .''�rr I I ! 1 I ! / '-- `I —+ 7— '1 `n,� W+ ACCESS ?0 C 1 L�\ t` PARKHILL STREET 1. e C 4I - .A t EI , 'I'r'l l I j `,i,"!,S7 Ira, s 'I rt., l-f-'° • �- •y-r.�4,444 + II PATH ! }1.4/ • A-,y \';4. Q= n_ r,. '' \;k.'R1 \ I .�I' ' r I TOT rj•iT_ r / T y_` ,4i ta•mDE a:' 4 .*-% ,yr } a; * wo t I J Fiji I a ` # I j r ! ''! r r-1-",""`f . y , 3L - s r = "- ------ �v.. �a ,1\ � , I IIII I� I I ' . !'*14i , GRAVEL GA d _ * �'— �. _� Bi-in4, \ ,\, I,� R`I II /r l w_ 1, F ' ' �, Access a.R,k ,`F_ x,„ 6?', g:P -�_ ez.,''fi 1' .�=-_- ~ Ilif�" ,m'• 4 II 1. !} 1 I »y 1,,a I' I f Plly�` �. I * /,' r 7..,.y {.I >,'lN - �' I°I f f-- -' 3." _ - � 0#y 3 Ct.Kai ,} , 1 ,, _ Y II fr ,d, ,1 ; , " ti --••,gym �y9, ,, ,a d._ ' � � ./`r": 4 u Qa tI I � i a m� I r #`� ��F ' sw 5r NE� MI i M I z3wIDEASPHALT J' I AVENUE s 1� a 1 - f ACCESS ROAD I rr 1 J ;c 2u WiCE FIRE _ l Ir j�£.�,� (uNIVPRo�o Clm•y n! { 4 ' I / I "-• X ! I'' ,TURNAROUND _ .�- I' 1 y I�,j I m wlnE + ,r{(�y�j � I\ I I I I I _ #-�' ,p. Q �=p- �s f I m I, I, r /r ACCESS CATS !/ , I � „ �0 I , y� yl�pay�ik 'V� I I M C83* �, A ! ilti 5.'N' y Y i1 17 WIDEGRAVEL ` r r 71P -- t4"' ` 1. a J: I II-. 3 l le-H.1 Q // L _ SETBACK 3E63./ '/� , 4 El ri e, i WALUGA RESERVOIR NO.2 ' I' I }I CC f'1 H (i p� ; _ •..•»w - # - , ` _r r i � 5Ergcy[ I I -YYh--- - I� O rn // ,. N r- 4• a N ,,4,11' T( ' k �a' }ir�= ' ' ���lt} ?,a�.. y r��s iSLb 1 ,.__--..—_ , W¢ c"i /O a'! AP t :L. �4, W Q f�L / ��>v.. I p �� ' , J r Ix 1ps 'si " '9 A, P * .' r'''aw } � --__ I--U3 tia •J� 4 ,< ' r II - ! I R I I I ' Y� ! / dt ' a "" ' 3 " w 4 LEE 4 U '!V ! �, I _J I I r . rWi r' r ! - a"M1' e e s+ C7 0 //� ) 1 v I I I r ��` +n.'�r5.`�?��• Y :e I I�Im CO Q ti "($ - t�aa'y 1j L i +sal ���,'' rF ,�"- %� W / 1. *1 r l r m -16.,� ! * ;�l s�` ' tcnavI= sErBACK * ' '¢;' 0. w I Q "1/ r'" r !r 1 1 • r r r Cd I AccEssa. �� �s•-ros i W`A a PAIN 1 a �-Lv 4/I rl 1 lki i, v . 1 �;,; : 's;!' [ �Ir 1 _PATH '' ',I v y , r I/ IIl 4 I r 1 I , t a, Ie`TS '' �� ,E I I - J yr' ,I Ir/r�, , r / t II / Fri } 5'V Ix Ti,'7!, Ni�TI♦ \ ,',�`�� � _ T--__ z /f I�I%� ;' N /! a.!..1 v ;x l QIE �_ r" - cn CIRCULATION AND ACCESS PLAN +^ No r-w yyyt, 175070 FIG-4 PRELIMINARY - NOT FOR CONSTRUCTION QEFET CD - 0 r ii fie" EXISTING SITE SLOPES / - s •-- SLOPE OVERALL DISTURBED / 1 , RANGE 9HE AREA / V I' 1 1 '` g E a-TVA 26N.IE35F 53,659 SF ` a . 20%-50% 38,037 SF 11,684 SF l 8B% 5,110 9� 2.007 5F % `� / , F £ _. - g*' TOTAL 313.2129E 8T,3285F ` • ll e - N _ # ' �' `�} ^b !4. .K. __ e E^ • % _7 i r1 J`->",a�' r W �rj�M ,� '�`•%�' J @ "'' $m A: 'a_ l � g g. F. % _ Y � ayYf' rrr '/'i } I- tr;�;;1 I f $= s roEzlsnpcN �` e ._ r lrr // r, , 6n, &ry J' '�r' � " 4� ceey .. . w'. ASN 'r ATORJ.I 00TEM j �� r �.'r F W S^% 7 I "�l' _: -� , r. w,EI!•` fRa ��7! STORM sysTEM .y1 ¢j (�f �'' / /n r•/',law }Gn.j'"r. V'� �:1.. OT' / 4/ r +f,� r • • ''4, / ' +� 97*F-1 -,„ •• +r5. WI " 'rL,, �� — 36"STORM PIPE LIMITS -!:I N �pry , ! ' *� r lr/ '} - l �7,Yw �� .- � IFM oPRARY DISTURBANCE TO ' x t Y - �sl' jr " '% ACCESS ROAD AREA TO BE • '6 �'r )) d \ %��* r RE-VEGETATED r Il *//I l�.� I =,§aM1� �/ a' / }, `" a aJ' b '✓ �" 5 a } 1 • S 1 1 y, , ' 1 4 ! ��WRY TANK OVERFLOW / d lI l} r �s } _� •F .- � -� -t 1 ,}, 4 1 IDETENTION PPHP r /� I _ V , r #; 1661 ,r t /r r ' r ' •.'i. .�_BOTTau ELEv-zw , Ch 's� sk�i I- ���� �i"�\ C 'a¢p `t r I r 'r r r`rr' MAxwsE�v..z93 f� / fir' �4 -- F. l } A -•- / / � ..-p. / ' '*' .L+ aAr R- - �:/^ „- ',1 ,,'t �K J= -, > mil' itti �I \ I A\'y � •v:.,:1�,'_ ,�� k'r / 1-z � a NCE"�' 1s�1 /} • -,SPE - , i.Ltr _ - ' "`�� ,.?=;'_ ��' � y�fetRi' '�•Z ACC v. _ `` 1-,:q;-''.::,:_, L�'li ,R �s� -�-- Y 7j c+ 9 ' } ...r I. r,I.. k ,',I» >} .C1- j„ I.1 - .� I w�-- • 29 STORM PIPE - � - I `YJ _ ' NI �cPNTROL MH FftPM r '�p'fY 63k\�* 4�.�_ -_'_� l S,yt-� -s SW STONE AVENU `4� J9 ,6 I ` I {2a'SYPRM PIPE I� + C�YNTA POND - - h'rvtNP o} I tag.11 i 11 1 OECNLORINA7i0H MH __� -1__'�_ MP 1 k 1,r rl 36"STORM PIPE . y. „} } FROM wR2 TANK ylr r I 1,,I,,, 1'''¢.r r� Ir I m 41 1 IANPSCAPE 1 . l-^ . J- ' } II i •Fr,' WALL((LESS 'PPPF GRAIN Olrl'FRLL j�}y�`y STORM WATER 'I�THAN a'HIGH) r TO DRAINAGE DITOH a��`r/r-� � 92"WR27ANK y--.'E, 'T + I - ; T I i r I QUALITY FILTER If �(S 11 I P STRIP L i,. J OVERFLOW PWE yg r r 2 S7PRM �l y.y I.. >S� PIP� h1��� � j �p�`�+ �y`p��\ Qi .«. ,- :K �r 1 *L I I riiA� (,j i+ - CONTROL MH y"a �- 'A' ' t &• .p *h �i4 l ' 11,I} q REMOVETflEESArya g'` k'� c 11 G cF. ''',/' r'- f:FROM Wpl GET.,9`'����, A .((, 1 - 4i F IJIfI, � ' � VEGETATA75- -�& r - v •ry .! 1 POND ,., /r I_ tr, tY �/' ' %\,I Y Imo! I 1� • Q PROVIDE IMPROVED /�' i ` ' e. I.LLL 4 SIGHT DISTANCE • /- arm J'x � � ' / '� sA HAl F 35�a.��r/r'!, i 3'!r S/r-.wuUOA RESERVOIR Y a ):'��3 a a� �I •w H�,� n ;, I # w r r rl /'� c�!" I w � pN•1 *SETBACK ' _ �` , ` _ ,I , 1, l mho o x." access e L 'L ,�+ 1 - I y / <" "` . I _ III II"I V ww / / ��/hk:1T1-,--e"1-/ A } c s�'r "A5 rytr r r Tr�. *.rP e r..�pp'1A 'k - I I __�- - $en r a4 ,am ''/Fi//l' I i'P7-// r ' fi , 1 'r A at ° / "x _'l'0,. ._, IY' �( O W ` g '.!/,.. (( I •* ' "C;.,.1 � hhtke. ° U' Imo,a /� / ;STORM WATER a ' E. ' r r r I •- l + } ' 63 5 N,}, f 4 p7 V 4 /�+e oETENTIDN aPNo ` I .4" g�ry�.,s:o', ,• `.s 6 f j I f 7 1 w 4 z /I U, F gggliELEv.= ? i r,.,J_' r."e4_(ill LIMITS PP°PARrPE ��. ��`> i if c'�n I f a /�_ 'A F wO ELEV.•2A666 • r r�X.1.. CON5TRucnory FEHGf3 �l ,v /' ' "+trw / & '{•,,y_� F Ly p 11 F, MA1(W5' ''' 5 IP Q �l ! /b r i t l'� .v 1;' r FE1 CEL K • ¢ -.% �'' - a�4— `@l am, t3 -_ �� Q� Al11,-,.., i i p. /r � ' FENCE fs',. 1 1 1 %- �' Erg' - ,u e J '4 9' J/ ! y � —'Y/ , , I' • } 3s-,a.s I W 3 1y'lH i!, r r i ' _ //re ,'�1 tax/�'] r'r j+ � - --- rrirr r / ' - X rr1/1 dl�rl', r r ! r r '''Ifs'-"I Ar/ --- ---- -� <: . , O) — , GRADING AND DRAINAGE PLAN ," K� r ''-1i� v.. T75075 PRELIMINARY - NOT FOR CONSTRUCTION FIB S I OFET k 1 r t. e 4 F i 8I ll 1 as • h] ws 8 ^R S 1,$&8 • _• ,$'gam w$ • • ommg ealei • CHECK VALVE ' i VAULT,TYP2 VALVE NEW ELECT • VAULT SERVICE __ i' \ _ _ \ 3U'WATER / M' 4M 36'WATER G e -/-- 1 �\ �'F' CONNECT TO NEW _ - ` F \ FINISHED WATER Q __�� ~~�~�—�`' ` /' ^ram—_ _,PwE BY OTHERS ? 24 �� / L f — _. _.. P-� WR2OVBRFLOW A,.i. F f1S)`p LY '` DETENTICN POND ' _ • 1I1 .Y. LIMOS OF I • fi� j Nih ! ' I •, .I a,g j DISTURBANCE +,1 f yam.' CLINKS tlF _ EXIST 4711! m p 1 Il 1 • T n DISTURBANCE ELECT x I VAULT (II 1 /. `,p�/�� i 38-STORM PIPE TO I WR2 DVEREFLOW 'H 14•'i• ELECT AND REPLACE ANDOP EXISTING STORM /fff ( COTROLS SEWERNS 24'WATER ` 1 I lI )I Ir A/ VALVE CLOSURES C TYP DUST — VAULT 1. I''' • \ .. 3 ,i A /-, ..— ROOF DRAIN CONTROLS 4 it, OVTFAI.L TO VAULT -ELECT ANO CONTROLS Lie, WALUGA ww H ti H - - TO RESERVOIR RESERVOIR ND.2 i•S 14E'.2.E SST BACK y 3 /f'• .IA IRANTENAATION (WR2) ; a F St3�1 q a • i LIMITS OF ' P ' bISDRANGE O H STORM WATER O i`--I I- N. •�n • `- l DETENTION POND DI-105' __.U.1 g�+ SETBACK • Q r' v C x IN) CD . 1 . —` - � �_ SITE PLAN , PB t , . i�a 175070 PRELIMINARY - NOT FOR CONSTRUCTION FrGTs 3 . 12 i ll I 1 i 1!l I/ V l g `dE e:.:jHt "" I All !I ( t a �� ,T- Nl ".� s, 3'A. 69 EXISTING VTR p T. = A __ r r {3eb}'� yen- A di 1,1 y 1 f--- f! - k A ' 'iV 0 O 18 � { �j 1 i 1 I I�' 1 1 ' 1 I j � / ,r 1� 11''a ,"f i�� f� � .r < A 3 2\ 4 \ �� 1 I pRRT1'eolmly r- 1 ! .tt ;r f' ! f \ _ lk `�� 1 L\ ' -1 1 I . i *19,for r s, �T -- M—" — $i, `.,y c s R- r i A F_ ;— 1 \',-,t 4„ _ — 2 21 t �P I ice-+- -1 ��l �' - Z a ' I �— — i-r. 1 ''1 1. 1 l t'� -,esc �I' i - .,- - — --7 Q I l` (� 11 r r49 � '� , 1 1 /,. Er4t-.� . TT!!--���� �O _ r, I Ly,i o - ; f 11 f firt. "' _i___..-- ( I / ! ..,_,. .i i C. 3 1 I f! 11 t ! 1 I h 1 I:f f 1' r f,,,jjjSSS...] �� s I 0 1�w P �" 3'- x1 tl_ I[ ? 11 �1 , �� ,1 f id1 r1 1e�1 J f r / -�f �_. l a,.e ea �F �__� — I --� --1 // a tl 14*1 ! I G '`G 1 I I , wRz , th ' -1 ,` /I O ' `� pil 5 icy 1 -. r al ' - 1� ,� :argot" b I Rw� -„r;�` �� �' ? � � 5 0:�ilt.. i�__ ` r' I •�.� r I' / � @�'�9 ar1 I Ems? fty I\ x .e 1 i t x "1°� t 'At, :; , {.:,� sbd8'4�f cz , Luw el `r.,,tit 1 I �3 1®.� E ?�, /£,.r' /l / ?r 11�l 1 ` l i 1f 4 ti_ r/ .II (ej> (',� .,{ \ a �.i I I . 1 C67 a o i lie kj �� ' Le I / j ! l 1 }'11 •! • Y!F "' E F, /J _ Alt), .-?�i� LII�RS PF CDN9fjYUCTICfI i]ISIVRBANCE I __ ' Q T /iI rJ1-��",J� I' / f /1I.',( r 7 }_ - n LEGEND w 3 t I 1 1 `7t�, �'',,�xs� I' 11 :'P '— 1 ttS TREES TO HE REMOVED I I _' _ (., TflEEsTroSESAVED V FflE NUPROT; EGT 1 O TREEVOITN 15'MORROW DEM �6r INMATES MEDIAN MO MI NRC 019TRICT fi 7 l I . _ NOTES C" J _ �'——— N O REE9 TO RE REMOVED FROMT ER PA OCE 7 r M�8�R�s 1qr TREES TO BE REMOVED;TREES TO BE SAVED o "°° '"�' N FOR RCPA REPORT I FIG�6 cp a PRELIMINARY NOT FOR CONSTRUCTION C-sam c _ o 10 fv2Oyc.M — ' r' P4 I • • 2 '---• . I ---A--,__ 0 .„„,„......._ ..,„!-,._,,,..:.„....,_, .. ____-- _,.... ... ..., _:v----_ --- '. - , .. .._____, ..._ ...,. ,.,.,,,,..,.,... -. - ___, -..,..._ ‘ - -----°- -„,:,A -t _ 1__ :-��0s `9{�i \` � ` CNh1P1 PR T1 I �O -, �r .d N ` -- ' m1 7� ``` � - y - Z1 4b2 y�4;64 574 \ � -39� ^-I{1 _- _ - X 44a ` e9 ~� T— -f� f • ,445.'1 `4 _ALL--` ram. 4.7 N 407-ram 400 - 1` 4u5 - d6] l\ a1 - - , 1\ ?p ` 1 51 L^ gyp _ _ "7..:-„,i .'.--, ._/77.. ' ,:.,,„,__,---.10. .'---------;'.:-.':'-'10 '.. . -''.. --'-'---.'-i -'�.. la_ _ -ss _ C_ -vim �- 'a��._-- ��. 1415Ts Yn`4t4 fir. �_ 74 - �. ` '\> ---- ��_ I•� ' -: `a� '��I �`w . a�, _,� vJ ez._ • 4 ,... t„ -. 0 9l' -E m ,.•, .�_1--- _ ^.'' a_'iv�i 1 l-7a' ter_•`,.. I i-44-!_ +`^ �• 0 o g2 ig m o r; �' -� y - <a �, - , Imo' =o I s9a _ 1r -_ 4 ` Cr) e,�! 6B -gat �\,�-`_`_1,34 o `122 .. --V - 6 698 \ y_'C 4 y41r� -vol _ I -'� C r 693 '-69h 11', r/ N1222 122 i+ . _. 256^ _Ai y R10 .� _ `'y�Ja21i` A \ • �' I 4r 219 /J ~�a 'Ce.::: e4�i .rtiTi.1 `r • 11 A -�,:„ 121-7 / a ri N LAKE OSWEGO - TIGARD 1 i WATER PARTNERSHIP sR I I I d a'ii'" WALUGA RESERVOIR BLACK&VEATCH ��r �_Building - III Vo �p a world of difference. ^.xd.],r,c, mle rcxs 4w xamm v!SW Cr) ,'6 y • v1M:]^glrFanu ou1]a eb wtea f.'"1 S,T'L,_I60„"""4N.m a „11 - LANDSCAPE Black 4 Ve omorporatlon MMus:sous .,,..n r w.s.57 AU »>t<::rovsn.aq wc:ras rseu otrsrrmre e:v.a]ay gKrsf w'w,[69reraa pq rcx:ran f I. .a S / `1910 t,, '}lax...., V11?22 ,z x ti 1 ;Y g9 999r-•1 I 1 i Pl r .� 1 1 1 • ! L J 20s / °omp, t 1�Y f -` 171T�''."A11a .�•- . t f `yx,o]Qz � z s. TAMP912 \ g` /• 1 .. I 1 Y 1 i,, �ls �Jkl:"V1.I5_. „,r � 2e5 . G \ 5�p i1 Y1 :',{.\JO�i -I�'lr I I - - `-Y 249-_ War;-N .3T. _- y 9ca , oxx o *-(s) r?' Veo •.,} -,x9 32 .E V r O,Z1 ' 36 69 a 7]27Q R „29 N m 8E �... 3 ' zil P' n' a Izea .art 1 7:7"19xs 7 �4 C ' - TI70 1 . 1. /-�v<U . :. t �1'1 ♦111' '14 oilkas 95�.r 1 : c i Y ( 2 . Ix V,15 g0,n . ., 6 ^ �� �w ' 13& I gN 4 F z A- �]9 . 1 ,� C - -_,�_ 7 _ ...- --. `--- al-' 1523�- {I r , I 0 I 1 I I (,1 1 i ,i—..' -; 'S 6 Ll401').,\;;_ z,'''•' ,..\, r Ia, F•r- ,;',,; IIFr; a I f • =P i t4519 c;1\s,`, 1 1 I i 36.1, �' 56 \\ 9 0 a-'it., i;_ .'2-:::::,,.,..-' \,..., , ,,,=-.== 1 1x 4• , I t, 1'1 1 1, D3 I 1,t ll I, rri I I 1, 111,- k~•1 f 1 it ,I , II ;I I it DJ ESA.;^`t ; I ' DL Y _ m s c PARK NLI,ST. _~ L ' -�i /t+ 1 09 Ll z ie. a c --.I ti O z Hg LAKE OSWEGO — TIGARD 11 _ 44 WATER PARTNERSHIP - ''e e= _ WALUGA RESERVOIR [ BLACK&VEATCH �';������KS ' - 0 o, La.Bulging a of difference 6,1re 4....,am ue�m 9 mil 01 .ill LANDSCAPE Bark&Veatch Corporation Lr:oipl:roe.nxwlw rw1.1.a'ae•s,+o er^n....,Iw,.ro.� req»rtor - 0 ,„.,. P.NL6 ;at.,1 ,, .aw 16 1 S C LEGENDS L e NOTES 4 TREES TO ES SAVED(TO BE REMOVED LEGEND STORMWATER FACILITY PLANTING LEGEND RESTORATION NOTES s f TIEE5 REMGYED Sr CITY NI FREW W S CONTRAOT gg WITHIN LIMBS OFOONSTRI1CTpN OSNRBAMf:E LINE BOTANICAL NAME COMMON NAVE 1.ALL AREAS DESIGNATED A3 uNpFR570RY PLANTING ARE TO BE CLEARED of INyA5NE RANT B y..4 SPECIES PRIOR TO PLANTING A'Atli r-1 TREES POTENTIALLY IMPACTED; ElEOC1wF13 PALVSTRIS COMMO`� ISFROM LIMOS OF CONSTRUCTION DISTLRRAHCELINE N9PII(E RUSH 2,SEE L2I FUR OVERALL TREE MMMTION PWI, Q T g O TREES TO BE SAYEQ; vvvvv BAGITTARAIATIFOLIA E 3.ALL TO RE EA P3 P n v V v l RQ4MFAFARRpWHEAp fat FULLY AUTOE801IC IRPTGATI014 SYSTEM"SEE L73,LOZANO EGG 1 :9 4.SEE RESOURCE CONSERVATION PROTECTION AREA REPORT AND SHEETLDT.1 FOR DELINEATION'OE .3 71 ... CARER.OENUPTA SLOUGH SEDGE 0550UACE fANSERyAI ON AAOTECRONApEA BOUNDARY./ PLANTING NOTES a$a 8 TREES LEGEND JONOUSE7PIISUS COMMONAuSH 3 E.1_ SITECDNTRFCTOR SNILL PROVIDE TOPSOIL SOIL AMENDMENTS AND MULCH A5 § ?BOTANICAL NAME CORDON NAME SEE an. SPECIFIED. i" O ACER MACROpNYILUM 81G LEAF MAPLE 217[A!. 25 E &HIRAM(NATIVE WATER QUALITY SEED MIX 2.ALL PLNRS SHALL BE INSTALLED IN ACCORDANCE WITH THE DETAILS AND f LLB.PER I,pOl15F SPECIFICATIONS PROVIDED AS PART OF THE CONSTRUCTION DOCUMENT pACI(AGE. k.'iRr1 Q ALNU5 RU0RA RED ALDER 21R'CAL 55 TRff EL �Gl STgRs 2 REMOVAL ADO PADTTIDN SHALL BE PER ARSCRIST RECOMMENDATION.REFER C' ,,4 'TO Q POE aDTSUG0.MENPTE5II IOJELASF R1 ffBM, 3B TO TREE PROTECTON FAN(LOTT AND ARSOAIST REi1DgT EY TREE CAPE 6 LANDSCAPES 0 WEST SIDE YARD SCREENING TABLE- UNLIMITED,INC,CONTACT:4AT AIN (503RTS31E5f MFO�TClu.CGMJ TON r+ r.�ixa�e,w,. E. mmw V RSELDOTSTIGAMEry7JEEA DOUGtAS FIR 1042 NI 46 PLANT-PIPE REQUIRED PROPOSEMSnNG 4,CONTTIALTORSHALL STAKELIINTS OF NEW PLANING AREAS AND NEW TREE LOCATIGIS b OR1iC917AI�� Y CAL,CANOPY FOR REYEW DIY IANDSCAPEARCNIIECT PRIOR TO COMMENCING PLANTING 0 TWAPLIGTA WesiERN REI CEDAR ggHT, 36 _ 4 11 A4 1! - 11 1-11T CAL UN7404119YTREE 4 4 SSTALIATIOtI, 0 THIUM puCATA WESTERN RED CEDAR 11M2 HT. 54 E HIGH EVERGREEN TREE 4 Y 1€ 6 TaTu,,s� TOGA SHRUBS 36 43 TABLES(FOR PERMITTING PURPOSES ONLY} PI I:- •REWIAEMENISRASED ON TABLE SOp6,0012STANOAROUNIT El OE THE Qv :}-'TAKE osw I1wfC EGOMIPAL CODE DISTURBANCE/RESTORATION AREAS jq B. ` 0 RESTORATION LEGEND rorAIAREA DFaIsruRaAtrCCWTGINUMITSGEcowsnwcTlGN 92 4 013 °zo 61 aft • • RESroRAnoN WITHIN min CONS V ail dD f RESTORAnO1RANTINGAREA ROTAL51,4B23Ff72fi0T51 0 TOTAL AREA TRIICDON 55,24OSF Q9 T • ; PLANT SHRUBS IN RANDOM OF ITTECAL PI2T,MO SET ERESTORATICS 127331sT co.;• • TOTAL AA EA OF LANDSCAPE +• SEEDING TOTAL CA AREA OF LANDSCAPE RESTORATION OUTSIDE OF LIMITS OF MI I... dB I SUNh1ANN NATIVE EC SEED MIX APPLIED AT ILE.PER1700 SQ FT CGNSTRUCTIIIN 61,941 si 1L SPECIES QMPER PLOT TOTAL SIZE - MAHON%N NERVITVWOSA 2 IM 1z"15 BR RESOURCE CONSERVATION PROTECTION AREA(RCPA) ACER MAifONfAY(✓_RRVOSA s LBO 4.POT CETAIAW CERASIFOPSOI 2 64 1GAL ARM FOL'PSRU0MGFtl M711M 5 160 1 GAL - % h BES SANSUPIEUM 3 A5 12.reD SF SNRBVLT/S RACEMO,RA 5 MP IGA,L RESOURCE CON5ERVADDH OSTRlC7(RC OIST)PER THE CIITOF W Po LAKEOSWEGO 235,8� 0, AREA pE51GkOCIIR RESOURCE CONSERVATION 4 4C UPLWpFLMIEeT VNDERSTORY PLANTING ITQTAL80,6ABSF738 PUTTS) 118,715 501 RANT SHRUBS IN RANDOM GROU11900OFO.G(TYPICAL PLOT:1663 S.F.7. PROTECTION AREA(KVA.) SPECIES , W I �, QTY.PER PLOT TOTAL SEE h ACERCIRGNATIMI 2 126 TE 4*PO'ER TREE REMOVAL 1 MITIGATION 0UANTITiES O w MlVIONIA NEAYOSA CEMLEMA LI IIIJPICAWS 2 16 2GAL POLYS OUIG{S MTINRU71 5 146 tCal TOTAL Nmf{%EMPT TREES TO BE REMOVED ��W �� ROESSANGWNEVM 3 114 12-18'ER 166 4 SAMSIICUSRACEMOSA 5 ISO 1G4L TOTAL TTIEE97OOEPIANTEO II 2� s -1LP W Q IFIT, Lu Ill .6t� cg MEDIAN SEE RC DISTRICT TREES(MED OBH.151 N I OAR 15' -...L AREA AND % GREATER - MEDIAN AND LARGER TREES DiRCDISTRICT 223 iW MECIAN ANDLARGERTREES IN AREA TO BE DESZNATEQA511CPA 159 62 °esram, m — x 'V ME �' x ro01NO. 115070 90% DESIGN - NOT FOR CONSTRUCTION FIB 4 -Pim I : I , _.---- \ J 1 1 I , 1, , ,. \ // ....- ------- 1 ,,---"--- ;r•;:"- .,r,,.... ,=,„..".-. a atfft / '-' ,i! (, ' ,.,.,_ , ' ,V , •••P. N ./ r ) , ) 1 ,I ) ------ ",/,,, -2,--:,/ /, 1 , 1 I)///7 i ri Li - ' 7 '1// r,`, irf,- --;) , (0 :r . ___ ---- To- 1 r' .,' ,rr EXISTWO WR 1 'I,. __ , 1 4 __- ,ir/1( ( r ir ,r,'' r/7/71 ' i ! / '/r , q, q).•• la _------ ,rl.,oe , .: ,,, ) I, 'UMITSCF TREEKTICATION I, '' .11 '/u - r , r I 0'. AND NESTOR/4M PLANING 1 ''''' '',11 EL'ail ---,-- I I 1 ..) '', / , lil , -\ '1 r /,'/ /, , ')/ ' / i' ,,/ ., 0 /,/ // (, j , l i ' / , ' / f ..4&S\Nilo. NAM:, ,C... , EXISTING CAAVELAMESS " F.-, 1,1WIlfhP1 1-•, \, i i I , / ' '' , 4.0. '10 k11 er&,,N'.\\\, V4 V-21.•..,...'- bl.:24 ‘ X ... C., I..'" . '\ \ \ 'l 1 I) ) 'I II I l',i il 7//4' L',3,,L(47 /7itt' '.ailatibliiii00:30110:01111104141411044P*1•-. „iiiiii011-04% \ f-ft ARV' '''... ` \ \ ' L('-4-1--'4-' '--T 7 I ' '(!I('' I 7'4/*****EM,MigrAril" 2'24'..'-.1.L4104.ti :\s`,1‘440.44:7144e-•:%Anihi,;-,»&`,4•Opplititilt.;;11,!*et;:n4e4-- & , ,7 , i P i ( i ,, 1 1,00.44•0,.....,...-•,,s ---1, \ + ) 1 \+:2A 1 1 1 r 1 r i , r ( ,r,i_mi,41.,N,N1,\‘wri4. ,.., .\,‘ ,10),*f3141141A9K-144.4-itif:s*Ittipttgirmeapr.pgr,trOtfumlrit.itt:eri,,-.)-.... — - x il fly r , r :PM litilti:,,\\\\\\\\N Tr=' •-1 rghtfirrKIir,V4)..0„.\\,\‘\\ L\ Ar -',rA'N ' ''-''- - 1 >mr g n cril5 C I 11 tr•/.fir,,,,..„ \ \ -,, +t\ -- 1 I ' g 1 I 'a r girrlitent \`...,,.\\•4,,,a9AIN„..,, Wil $,(Altle A, r.:::: \ `\\,,\A .,,07* k„. • `Att-,,,,tevr-sra--.4504,4,1444 With \ , \ \\\\'VI W172 KEA MINCATION FOR ' l 02. 0 it I I ' ''i 111.041121.1L\\\\\:‘,. \ A'4417*.V.--- --Strizwkr4' `AN' • ,\ \\,\,\\Vf nc D villa ookus IporrAtvaA'paw r C132 1 1 I 0 / ' -,.......0_41,-,..-44447....4.- ..\ \ ....""t -•?-7-7-r-1: - '''''' Ii.:1,,, GRAVEL Can \\\11,1/4.\\..".1 BEE APIEC EENNEATEIN AND I I r, 'T I I • a ' 1 r/ 'r GIWEL A E ..-•`.:$41^-'4••'",--,"•"•4:::,,-- - .5rr--',W,•',.1-,:::..-aufz, 4,4.,,, '',,,,,,,"•,,::. • ItIZLkr&,'"• MITICARDNEDLY ' .' ....40.1.1ACL-111,10,110MT-",,,,,,•PE'LASII,,,,,,,,,111111.11111fiblallikiiVitr'...,-.-----------.:•••••7410 \ \ \ ' ''''V —=----- ----, --- Jr ' , •-...--1-4,.....gatti,WIESE„-,7,2,1yr;•...1,4414:414.4MS:E:,, ,,,,,,,,,,,,,-,-,&....,_•- •11,-LN, , r ," ._---- 'LA, -',..\ ` \`. 1/4\\:\,' 4 A ' --4••\,\,. ....,N. \",.., ,' ' jilliatinie ril- rk iirtie4=14%.N4741.V,ZI:74•ItiiiVrilW,:),' L , /1 // AftE•301,24trIt'-l'Ill$913AIWy4Atirr 10110004iiiiiiiiiii0o,14/V/ '', - , C;.,\\\N \'ir/•••,.r,vA••. -- ..,,L,,,,, y,... Weekelee,"."...esfoi.1,14.4 e•-•/ I Tikr.''L,• \\\,\ s .\\ ..,\s%'/ r A.15,Lq*°:,/ r,,/ - --'trr—,..., ) , „ ,..,, ,„ „,..,--rw,:e...'err.ry 1.1 • \• \ ,\r4§A :1 1' 'r•:V**, i '7,- 11'I i r: •i, i..' t 'r , il ,:l I/ / 'r i! ',11 11\\• '/ '\VzrzeM,,,,•• , rr / s-`r _ ____ STOR:AWATER FACIL,TY ENLARDELI7S _ V r 1' 111 I / •I , '1 1. ( [ r , I ,, ,i/i t , : ( ! \ ,, .4EILLEZLE:Antr•Ireg•-•'. -''',\CV I 4/ , / e / I CC 0.1 g ,...... cr (' t. ,r- I ri I`) '' rl. 1:,,_ 4:(I, / , 1 I 1 'L '(0(L I\\ 1 \ NV:16.1...r."...s` \' / I L., C•Dt.13 2L4 -..., \\NI, /.1 i ,./lijilil, ,, 1 -''' ' l'i 1 ;'' , / // ' ',/f 7' I I - -''•"'-'6 i,' ' 1 11/4 , , . . ( r, i /pi f f I ENLARGEKKI'A I / i j. LIMITS OF EILIIE NIEMEN ii,14,....L.., , I 1 / 74•••••=""7-4;:47,7r- -.7414 0 LID ( I ' __.----'-' 7 ' RESTORATION PIAORNO --, , \'V, wrsr scsukrisecareiwr:r I .n I ,r,4.--.:--yrixer..1----• r 1--- z jr/ \ ', I 1 Ihri.__4_.4-I, / 1 ) I\ 2,)zr' I ! ;/ I '),' ' 1 '---.`-',__ *• % / '\ / i i / /1 SCHEMING-SEE TAME ON Lit k _ , I, , .. , p- g e , , , , ,_ , \. , ( f r. / r 1 rr r, I / i. , ,' : ,' \ i 1--t—r;...0" . / ., 1 , i, , c 1 )--, , ? ——I if! ,,,,' . ••i 4' / --)---- ----- A .....0'.... ... r -- i )1 1 ii .Aorriir,"5",,%-'•------1-- ` cAAr-A.,- ----. rArrAr-,---- / c f.•.- 1 -- -- ------ ------ 1----— EN LAN:: -- MENT'A ENL.:FtCEmEnrraS 1 1 : /i/ --- -- -r-_- / _------- _------- I scALE 1.41). SCALE V-24' NOTE SEE SHEET 41 0 FOE PLANTING nor EP 1,14 gtl. LEGEND MALT 4.II 0 AP LC 17507D t FIG 5 h 90% DESIGN — NOT FOR CONSTRUCTION ,,t 61. ii700-Z I I T 06-9 J.19IHX9 ,_ _ 7 �; � \ _ - N CRAN 9-- `-•`-- - f....N.^,•'":1- 3 _-- . . ; lifOF � \ f�j0 �_ ice - — _ '.‘..,.-'N,,=.,.,-_,;.,,.,.,,.,.,...._.-7..4-:A1,4s0.a, 1g4%: , ,.,_.Et_,,_-__-_4_-i__-0_,_-__-.— 4 d 1 ?- - -- g• 'r y ' 5 __ . T-_9ti .c gel " 0, t 3 $ I of _r ''7± �' r b/Y 5ii�- -�.y^A-7ti,1 � t� ® > �0(;��/f�y. }J" �4{� i. {�3 ° 'a" 111' 1 4- 200- '2 1 0 �� e 0 , 0 'O0 • ° 040 ID'Ma 000 SI.. J �('On0 OOr iC -0s I CO yl�,I , AI 1 I I 4:)/ I �\OP 1 . p 4,',0;viovl,1';,1,11,;r_V4:61,0,fr,t1,77,14t:: , nl '.I- ,.,;. -- -� k ICg i�d, --= _� %" — z0 I 1 , , I e 5 }} 1� _ 1 I I rr 11 -� — 1_ I 11 .1 z co ti 0 z Irm LAKE OSWEGO - TIGARD II e . l WATER PARTNERSHIP 61p1l��e�S WALUGA RESERVOIR #2 BLACK&VEATCH o�� � �.Flown.WOfld of difference Hess.,,no.mw,rme . e V o 1 w+uW:marRuvl m.rw w Wla Fllup sNa ra....lro.aWs..ep.[.ma'� LANDSCAPE Black Veatch Carpmatiun .:zma uw as o1mr.n rlr.-l.l.ver:mevb..y Q a OVERALL TREE MITIGATION PLAN Pon1i°o"°" �, �- .m m.+.�....:+:1r>or.s:az:c.0 ' oz MATCHLINE 87 wr: ' 4::t.. '' s-C),: 1— SEE FIG 15 ;::••::•:;.: MD jam } . .—1 L . (i.i. ,- ela, ... ,,_(,)(Tho, .. ,, ,,, 1 \_....) ik ....,,s'4 -N•...0,. \ 3'a\ 0 ' -. H �/ It'....• G.) ' - .. >_Y--1 .10 411Q--) . ,___.7 . lio, 0 . ':--)n PA\ ,P* -#.7`a / C-) > ......, - c 0 1 / go 6y et 1 thio ,. 010 0 Gb 41 / ' ".... g o i il T1 PROPER,,6P6NDA1ry '�^- .—r. icf-ORO 1 1 4 I I 1 I :�' , I - _ E L I I x PARK HILL 9T- — rill ■# 4101 f 1 I I1 >� I / 11. II 1 1-4 ( - I I 51,1 I 11 L!._-__ O nb C) O Cn c () 1 ti O Z �/, e N i l LAKE OSWEGO - TIGARD -11 WATER PARTNERSHIP mUIOBf<S WALUGA RESERVOIR #2 BLACK&VEATCH Q £ �.Bub no a world of Offasenca. .�..«,." arc ...>.,.,a.ra.....F, .a .1.1.* Ell' m A _ LANDSCAPE Black&Veatch Corporationr..v.e.w m,.v.esv evuv rur.v.nra,...leo.wm.prone.. k TREE MITIGATION PLAN - SOUTH 6Z , � ---.....,...._._ '�,/ �� �GARmAAN DR. / /I - � " �—. � �. o q 1i 0 -t 0 1" \ 0' l __- ,., , l f 4 O ___ — — 1 %1 .. \ I `+ \ CD a \ r i il •- 0, • \F,:. \ \ 0 -INF - I - I� — > 99 (2) i 0 > 1 0 \ _.••••) (12),..-. ...,_____ / . (C="),}C) 0 9 ,_... ,,. ‘.....:..„ ip,,,i, ,1„,,,,, •. .... , ,r 4'0 rs P .4.441! Cliel- ; i c) rri r-- - �/ I II I 1 ,1 ; J `. l >1 l 1 /� - - �IA��i_I -1 1 1 C kl .`4 k . \ IRN---?-4:, . ]. ;:, 1.--.-,, ck-;). 0 0 II 0, . ., :i,..,a o • t __ 1 , \ �, dik1 k i g2) n O n t Do •$ ii?)il zN • • 1�4 a k al 1 14t4 11 r 1�I ll Ali ! i# o aIb iTh IC) MATCHLINE SEE FIG 16 ill LAKE OSWEGO - TIGARD M k !i' . ,'s WATER PARTNERSHIP _ .1 I11I ISS g WALUGA RESERVOIR #2 BLACK&VEATCH o y�p' ©.auiwim•world Ndiner.i e. y y,4 R4 ,m e,e Wlre cram sys,ee_...ua.awr w..y,av E CANOSCAPE Mad,a Veumi,Corn..tlm TREE MITIGATION PLAN - NORTH `"°'a'^' ,.,..�.� rv,011111.20.a.,r.n.. NTEDa,etm 22 J // I k ' KEY m, / Sr r ,r 1 - - - a 1 I/ I m !I�.o Y II I G%�. I B\ �E FlD t2 — o OF/ V.,v,,, ____\.( iirj:,_--P•19' -‘13(-- 61 z irt00. ��� s°- a �7e4.4 QF� b: 'ffi J R g \ R1 — 1.8 g e EXISTING W s /\ a� ' pion y 6 a !Al A CCJJAi 1 �x, tiY a- ®!t $ — i �J-- � \, --�- .a1 _ 1 6^W I �j'�YJ, 0 5-4 y,'.T � �, II I-2 s t o I i "I oil OF �'T / 0 (I p 1.7 I Y.S fi i — �l . , eh a .0 Colt) . 'i b' I I 1 gm yF /}/ 6 / ih: ` �} ,' ¢�} LEGEND IMPERVIOUS SURFACE �, Hai Gaga0 11 Ealatln Im M'10Ve Area SF / ;4o .4. : A 0, ) ... CIO f'T�^ B P Q y @ / 4 —Milo a �� ` TREES TO SE SAVED, Elseeg Horse i,71fl 4 /!. , - a / T , • u,- �A '0-' 1 O !Concrete Pad 792 N , -0 E ! �° 4-°+� � .e. `° —'' Y Oa Ii;?I PR9fECTED TPEECr, Tree House 138 cr3 H�r /. 0 F,3 0� 0 ( „s ? 5,�� Y i�i C OPYcaossEs LIMITS-oFAlsivR3wC5 FasFrv2Housa 682, ti T °. + < Qt`�'1 .. o ,� J P ca po842 r t,Pad 2686 w a w a I1 9 I �� � ����� 'b 1 THEE PROIECTN)NZONE TanVault{YrT41) 26,57' ¢� 6 ir -b .0 OP-W }- + / :',...,-,;' 0 0 b 4 ! -- '_ \#-, Ouroulming 97 I-U S , �J FREETNp1ECHONFENCE-LgAC60F �QE �'- GON6RUCTON0151 PAN LE Dam tamg 112 Oulbalcang J I 1 l ��iP7AN TREE PROTECTION ZONE RAGILLR To's]Eautlrg impeNcaSAi._ 34.518 CrP:C �/ 4 -- _~ TREE PROTECTION NOTES Talal Sim heal 295A97 W 3 a VI Ok �Y (, - IT,* lmpamions Men(%), 1'n4. t . -: 7,All WORK DONE MOM'IMPACTED TREE PROTECTION ZONES SHALL BE SUPERVISED BYM I.SA CERTIFIED AR90145T. 'Proposed Impervious Arta SF 1 I 2 ALL TREE ROOTS Y M DIAMETER AND GREATER SHALL SE LEPTIM TACT UNLESS •AccoSSRoo4 11574 _qlp SUpERVIBSIG PROJECT ARBDRIST DEIEEWWESOTNERMSE. Tank��y r t '#SH04 6 3.NiYADJU3TMENT6 T07fiEE PROTECTION PI7JJ SHALL EEAPPROVED SY PROECT IPSRiI 28,573 V- �.y x I pp I P1RGp757. Tank(IM>?I 73893 [y 1 _ 4.MY FILL WITNW TREEPROISO 01N TOME WGLDCMG ROAN SURFACE PAVING OR T THE WE SHALL BE PPPRDVEC SYTNE PROJECT ARROF147,SEE SPECIAL eFrNrw: �y !VAN!(bepntl road) 241 �r T288 W_ -/~- 5 PROJECT AMORIST SHALL APPROVE NYCLEAR AEPORT. :Vault 105 J �] - T GVORTR2.LEARAKCE PRIMERS S2IDVED.OF TFffE LMBS IVaJrtt � � a - 6.SEE TREE REMOVAL RAN-FIG 7-FORTREEB TO RE REMOVED. i� Flaf �..r 0 _ 7,222128181267 REPORT BY TREE CARE MOVED FOR TREE SpETJEG AID re. �"B 71 MO Q pTp - SIB Tot P19W5e•IMpenioue Area: 54,88E ie r E REFER TO EASDNGCOMMONS PLAN BY BLACK AND VEATCH FOR OVERALL Total$ik Area: 295p97 • +P CANOPY AND DRIP LINE C:EASON FtltpA rrwnnrr�m ru m.,= s .{a y 0 ae as S.SEE TREE PRoTEGT1ox ILW DATED J1RY rzg.1o7P,Rv1REE CARE DMDMITED FOR glmpervlgusAnalXy 48b°h �P27522 Av..18 � ADDR109L MJTES,26EDING8TgIis,MA2E228.288 MD Wax catiomoNs 175099 I'6d FIG 70 PRELIMINARY - NOT FOR CONSTRUCTION N CA.) oar "" 17Z / / i / 2 "" / %. ., �` _ ' / xlol1_-1 99 `�-_� �/ • 435 r `___ — Y R{���/ -`- xls+ 1 CARMAN DR- , C6 381- �4e' 124 f 1 467 49e 3]4 ill. 1 -0 43 + 1 I`I . i ]3 <e0 41 466 \S Y 88 II C° 1 .1 �5 e c is4ee �`'c� 9]6 V i 1n 1 l on. - ��� 111 ' 1i .16" � -______ J . . 5 9 '� 4s 452 -j I � _._ 053 01e 45a� _ '] Trar•p 6 r_\ 456 ' 45] le `� a "Mien rnsmc parse �85 1J, 1 : 1-MI 3' 1 •✓0.16 F ix. 1 g9 dis T 1 45 % r rn 54 , f mow= NW �' ) --4;.• �.5 �53 �2 , I / l-_lib 1 43 �-`J]I 777 gir f///'��g5 63 \ AAA,,, 69 y ' \_ ' '�,q K... 61 / r% 4 4 / . 6 Q \ Sji 13i{PSi �w- 4 e.isnxcn N txz4t-=x • .. • • 0 MATCHLINE SEE FIG 12 1-1 5 : - 11 LAKE OSWEGO - TIGARD WATER PARTNERSHIP 1-4 N „ WALUGA RESERVOIR #2 BLACK&VEATCH I�uI�71JI11�RK5 F � Building n world add..., a .�,, " ki� - LANDSCAPE DI i&V«tcn Corporation �asln.ur.9 spar.....,.,.,Lr„p,..�,w ��'1 TREE PROTECTION PLAN a '"°°" - .te — a , nrrcrr:.,r.rr.. rmre.r0019rw low,N7tr ro. mr.. 1 SZ =-- MATCI-!L/NE SEE FIG 11 ti /• l 7— \ 7-1 ly1 J is % 341 • 12t2'--- (117] H r� s 51 , V / 212 1 39 255 $ ry�G 1259 2Y ,, illiaimi," . \,,vy li w Iv ,. —^r0' 1 m2 VIP9 u 55 I y 8:021 "�✓02031 013 Y+: l R�, 00 f ��030 Q]0 ly (� •a:e - ]511920 0 +0]l925eCi5.-ii 940 5 S 41 OR ::i te l • grinfroia 4tow 90 h, /-y2� r TA: 91 2,& I ; 1 ff�,�,x ap eao • �/ y 1 Gt e 1 • • • a I • s I 5 Y PAIRK HILL ST. — / �\ .%/�N • m 1 M El \ N fY I Z1 I I O u 0 D3 0 OD Zi 0 ti O Z 11 1 LAKE OSWEGO - 7IGARfl l! eem WATER PARTNERSHIP w �'" WALt1GA RESERVOIR 2 BLACK& IEATCH 7I611111k — oyOl� 0.6V!Idin9a Wfllld of diryelen.e. wR a=-.rsrwr:vu MOM ara. I+a n u g .c e].r......iw..er-r.Rnr.,J. N ,-g g� Y LANDSCAPE Blacr d Veatch C0rpara1Wn m rye..1rwr.r�.mr.mmr...� TREE PROTECTION PLAN 1iYn° 26 1 �� -, d tR3 NOTE I. -TEMPORARY CONSTRUCTION FENCE SHALL OIBTUREANGE(TEMPORARY OF E S MN S CHANCONSTRUCTLNNONFENCE FE FENCE PAL SE /5 C R a q8 • e t F 8 :S R86 E • E "..Bg ith • CONTRACTOR TEMPORARY CHECH VALVE STAGING AND STORAGE AREA CC4ONSTAUCTION / VAULT,TYP2 VALVECT • / _ -j CERVICE- 7 30'WATER / 1P�� _ \\ S • ` _ :.�• ��~��� � w • I• 36"WATER CONNECT TO NEW U a _ \? __ / • V(.f� \._ FINI$HEG WATER Q a L / rR" PIPE BY OTHERS 11J`a ^� N. WR2 OVERFLOW I--- / • _ _• -~.-1 Y}fa tg • i ` DETENTION POND _ I I Y s 5 LIMITS Of r ILR (�m B OIsn1RPANCE 1 OISTURRANCE • 1.\ 7NOTES 29WATER !\ AND {YID! ✓->.. — . 1 Iii* / ENCLOSURES CONNEECTTyTp OEAST ® VAULT CONNECTIONS . \r ,--;---'- — . ,1.. • '`�'Y ROOF ORAr C7 kl /` y au\rFAu / I T WALUGA 1 148'.2.5"SET RACK I•`I M HN 4 ! �V RESERVOIR NO.2 �� �` V. l "S_ DIl REANCE ( 2) .! �› H 1 STAGING AND • STORAGE AREA \ / • - O a LU -I--Ni.) ..• NORM WATER Ii! \ / DETENTION POND O~ ti 36'-1D.5.1 3 O SETBACK ¢ U rJ • Li = Ij1:13 0111 i --i SITE PLAN CD ^° I,a "°; "` "P ,P o .+au 175070 . PRELIMINARY - NOT FOR CONSTRUCTION FIG-17 SHEET OF N 28 h. LEGEND �, � / \, - e ':``� CONSTRUCTION ENTRANCE f Ir i� 1 I i 'yF $ OINLET PROTECTION • / ''k E . • X • SEDIMENT FENCE ,..\ / %i_f j_J .- _ W� } ,•) 2 -I-1-1- CHECK DAM i, �I /I C - - ' fr -. �• • ,'d•+••# $$ Li r I �J!' IY�Ir%I E R / /.Ili r � t r "'"-'-•-•''''k---'T''''-'.----'''--t--f ✓- oe sr/-r F�S"k�{!j 4ti,,/r +r "I,;C" + n g9!% If+ _l�r,!!r �'I.+. +. A s g CONNECTION - 1 / , r Y �y y TO EXISTING ��-' l r y X ! P $1's} �1 3 p C . DOWNSTREAM -' ,, - -S"1 J ram' ;byl - !� , [ki''�I L.a' - ti,zra. �VI,,, .., E e A°s STORM SYSTEM �+. 0. i A-,r /rr ' w �� J\ _ �` �,l�r/ N zlr�r rr• srr l'r y� -�,r!, I��',1 i,ifi.4 _ yy!lfr�/ ! +£1 „!>E i/ri N� 1 MT .� Iy�/y_ �k,'� II, ' L{MITS OF GISTVRpANCE i + J' VY I* .\,� r r ./rd ,(le f.gg �' /!' '%-�?�x',N rid* . NV � tttt r�,=�C l/rr, ', -' l r�k ,•J I 'f "T, ` o '•' `3�,i.` \a �i 31I,y t ' , J �' IWN_TANK OVERFLOW ! �f i �--t,A 1 , + r ' ` ! , t I ! ITCttNTIONPONr '„- � . f' r /." \ + ' � s x�- i.: ' I ! ' I! r I! r r ' r1',.' e"-rI T S Z' • \ T u� ."' ',y^,. v . t 'i,�, I I l -,, 0" ,. , ,W, ,l,`/ I �wij- y .•' sw - —gym;' ✓g�`� A - �% o EOa I r �t,- s t 9 >9 I,�, ".� I Ir ,.T I I + + � I !e ..�''���/ � a!s+ Iy�rrlw= • _ � ,�V�� / P. l +;`v� � _� :✓#'� r •:t t � _- - W w� � esm� 11 1 1''y 1� I I c 11� I _ , {r .� raj-'F- ft'`i •r !' "-y =__� I f 3 m 1 - ,,-,A,. r '-Y a`�.+s�- ' x�S ;� j � �� r - �y t-i.-4-»'k"i a�''�7 'Ft_ fin.i'` - . _ SidsiEA -.i q� yg adeE P / �l' I''}v ..R.xrt `,t, - �T_-- f [uMuvaovUcol F--- fa m E ri �, Il r 4 fl ri , ti`+' ti '+' r w�\ ,I, 6�101441iNiti i N * - -- '1 pl�1, IKy�. ffi,�al� � _410- `� �� ,a� +r,Fy'" # r":l .p� !s k'� a -�'-- NEMov8TeEEKAND p' �}1"�+2 e- -A i , r �sN'A• �r. .. �.\ x' W3�t ,/ �xii I'� ? '' VEGETATION TO ' 4' [� S /'`ii //J,/�' •l�,�1(� / _w 1 �' I• p q VEGETA ONTOIMPROVED ' e 'l / 1 r,l�'r l 1�T ' / 18/t u _ 1 } x 5 (�r�4 a. . , I Al-r ,` ! ,i S,WALNGARESERVOIRNo.x a• _e t � I IL xo ex /94- .,,,A, ., Ld !r r f'' L; at� r h. r -=j i 'fir 1Ii,„ i.� r�;± ^N 1 .+," �—' - O pp q y,..., o �/ �r s /, ,r/i - i ' ! '11 '1,1,- f, , ,"/ , "l'h" " r7 �.// " ' 4�i# p' nQ.l II I 4 v c3 r i fi�Q J % wAIFM Ili I ' , 40 'tIMirsCFDISTUR9ANCE ' u Ti 9 , = 0 2 Q- / �� r { taNum, j * � " / a• .Ti I1-l q i i NSTALLTEMT,mrc , } 3 .DWI t DErENNON x "+,;;,;,,,,+. i �, � z +� ! @s - I I POND ! , I"j', ONsmuc'''FENCE) + X � — �:y ,,.'�,,, r ��, I ii p ti�I 1 4 • I ,�,�. "' ,1'' ' I / J�p'/,1/r,1 �I } y� l u1t '!t'+a h-r ••(l , 1 ,' 'yP r 1r F�, , 1, ,,,, I ' d3.;1,', SEE 'b. '. \� f! ' _ '�tE T I �' /, r Y r� ,� ! +n r tsxQ,.l rrt./rr�+s G 11 , .-ram!`� I r ' )1./ /p„,„'�' , 7. /, Yes, r r "., e r4(i i ' :.�,•'., ' --�---� �%,',,'! ', ! � , : Ifi 1:_'fk:i{ , I 1 - o to — �� I. rs EROSION CONTROL PLAN °° a° so IL EC-1 PRELIMINARY — NOT FOR CONSTRUCTION SNFET N CO w CO a a STANDARD EROSION AND SFDIMENT CONTROL PLAN DRAWING NOTES: ,.S • /B. a �,m,AP Y i�/ I. HOLD A POE-olisTREsl.L.11.Or PROTECT Pd1SSRL11d PMSwEL THAT muffs T.INSPEEIOR so olo..CREKIC11 AND "f PN�� 6llIWNT c.o.WAsous Arlo O0.19.101 UNITS R a? k. .•M'•I L ALL INSPECTIONS WST BE LAED Iw ADOOPOA.f WITH DEC(BOO-c PM.EASEMENTS .•$ n /' '/' Zp ; 3 Ixsv[[npw LrcS ul6r BE xFvt IN rcnrrr R rx OEU 3C0 C FFW R4[xr5, - It•Y�rCy l P +o :., r. SETA.A LOPE OF rK E.Arlo ALL RERISIds d VIE am Eas6 U AvA uelE d 9E6661 TO p[a Amur.To.E LOCAL g iµ9-�R-$ ' NGIICIPALItt DIKING INACTIVE PERIODS OF(!EATER THAN YN.N(1)Cd3ECOTILE 9Ar5 RETAIN TE ESL'➢Al I.MISTRu[SId IR .xrN v w A SITE O4 AT ANOMN lOCnilprl, . . ma......,.a s-E OEx..... r,3 tlF® i IN THE Moll REOP S ISTR LI(LEAST II65ES(u T. IT THE ESE.FAILLE%TO WRENLN,Age rf ENE OWN.NASNSS OR PRICTICES NSCBIDEO M I y A.S6o AS... 'p+' s. TIK ESOP 5EAsdES 0UAU EN OF Hrs PLA.x ARE NINIUW 1Ea0IREu[N15 Pd ITTICINAIE)SITE I 101010l5 TOT NG ixc mPOTRLO 61 222 q NIL..Wlarµ1 1100E NEA5o0s 00 Kau Ti co11LY All TN ILL 100151 AEE LGV0.STAR,AND 11IENµ EROSION AND s0OluExllld 4 5{a GONT96 RE01.116S E p l IA..... .q.yl.TAN 9M[•A Evogna i TSSMII I00[ 4LE�SO LISO.S Is Nor E OD ADE 550 CIS rAL OF[AL a LS ESto�WS1y6 15 04.tME9 5L£LIFIC CdOISI100 3 g S w ygul l µl I(�SSAR'r REVISION 1p pE0 W ALExr,Lc FH.L 5 as / rAImM.T (EMItN CLEW. E [60yp 1xA01IxE ARCS PROU N[[OUIRG a 90lRSE Cl 8: g 41111/01.11/1. 'Llils _ 1ID RDEF..R55Et AND PROTECT IBA ICK/NG OFF D.OII(N 6.161 DR.1611.W.I.AREAS AND v[IXTATI W Ix0.101x0 IAMO. g E AJ i fl i- A P ES n EWES E.NOirAT 1d W0A5 ID RE PEW. TENTEAs 466sATILE EMIR SAES OCT.,.Iq 3 C`w gg PLAN VIEW .� A gigWf SITE MO SENSITIVE AP.NCO..WETLNACI.UA OTTER AREAS 10 BE PRESERVE0.ESOEDIA I1 IN PEPTEETER AREAS .I A o 5 NA ��•' m AM RYE DIOOSMI pD 1.61[61 PT.'PRAPI MC NE---V�TAT%0.6,AaGS REKOEUTE VON AREAS WO M.S..BEFORE ir ram. ;� N AA 1 rI IDENTIFY Tx 1 n 1 SEED Nix Er. NOTES: _ _ _ 11. N IN axu MIrE9.N6 T own wunr AN w+rwLN coos. AND -ST RT A TER EEACF MOTE ROE•MAINTAINED.gMA1xEDNAND 0J1 V NW NNW.L. MN ININCE m � ESTABLISHOP TOR IRE DLR.Id Of C031RUMIW IN¢WINc NOW.rak ALLIYE lsTo.(RASH FOLLOW/ Ego Woo(BASINS NM \ MAT MAO R P q AwgrPRIATE EON-ndW11AT[q PplwTlpN CdTR(Ss. K Ii 41.653 CONCRETE TEL.A.WON OP.ITE DOL....166.11.A51.136 BCGINNL.Cad09ER FORK PROFILE '945 N � IS AM!IEWORART AND/OR vtlnAVdl soli.srAelLlinrld IE T S 116Eou1EL6 oN uL A 1STIxo01 A0EAs As ANAIr.PRWRESSES ,� x LrE},L'.YYs AND FM ALL ROADWAYS INCLINING WAVEL oNLYATS . EN l✓ F®......LUM.w. X i NOTES: um IN L0 20 A-fr rim fox .A,EDTAB.EASERIAL AMC WASTE STORAGE MEAT AND 01.R IKN-SIBNWIAT[R CONTROLS orn vm�lor�R, i a A�ExAm eA.L RA Rol 6.6....^PwgµN»L.W 9EVNc FAst E Ii PRE.N1 TRACKING Or SEC..OWN Is.IC M NiVALL ROA➢S osi.BLIPS 6.AS oNAYFLED Id PANED}EXITS NA PACING ~S r• ffi 1 mN E mNn.131.6 sr.won.M mg-WOW.W rNMSo AREAS,CRAVE.AIL vTAIC➢RDAOS LOCATED ONSETS.DR IV_E Am gill 11E It.VI.Wes TAW BE IN OLEA ERN.SO Q'n �- �'' r.I.om.7Ewan. 1.M0.DESTIANING ACTIVITIES LUa P `N. CHECK DAM-BIO-FILTER BAGS CONSTRUCTION ENTRANCE IE N War NTR TIND SAIMATER Md MOILS TIN SITE,[(TIER U.WATER-TENT TT.]LS DR DRAIN LOAM 0L SITE. al-rg[ !Lg It.Lt.E B1ET TO PEvdT d TUNINr1F 0T0.1AT0 EN0E11x0 TO POLLUTANTS FR.SPILLS;000LI AI 11E0x1, S El' ERaEN4 A-D NwA U E LET a�AonAG A-I! RS'Pl➢Orb➢ LEIMIEFLu.,AND STORAiE,ONO WANING NMD RAIxidNME MI IN1 rTES,NA LAVE xnn•AL1Hc ACT INITICE IHLY POLLUTANTS Y t N L.M 166.6 Roil A.AHD DLLs Egad WNIn.AND NloN.W,As Eat As coals,LEroos.PAINTS SOLVENTS (�m U4 frN[[ AND OWES PROP CONSTR.,.1.1,1110NS Q d v zi F IN x6LELENT TxC FOLLOWING OOPS WEN AML CAELE TWITTED SILL P 00/1TIER+u5 ASRC.Y PROCEDERIG.EWLO.£L TRAINING d ..19 a Stu PMYdIer w0 WVfM DESNA.PRODD.Es.sPU A1i5 xµs Vdr5ES, 1510R OA1.6.[O!!TOT TEl NEHILLES. mm i Mw11.y MAIM u arlwis No ssos.6.1PaS 1.16.µE 51dAOS EON aVERW sTdm(E AREAS PON WA51E AND u II L00 5A`R0.S51L-0 n0 ND AUNT M OSIER OW coMT0R T000TOo[50 N1£0E0 To Aso.N I.o-a0A0 so L 111 m • .. ........... ... .... . .. .......' TO 11S ANLrCAl1d RATE of FERloL IIQ IEID TO REESNALIOT v{MrIOT nor FACON EAIUASNENSI'S 5ECN,NO.DAT Ox5 TO I x PAA AN 1mElcx 1 E. N A STmE.ARR TREATMENTPasts. WS EMT E To suLF.E XAMPLE.E,EL gD Ew m a v 1 d.�L N R EIG)Rd�T EM1 dAD WR i f F. POLLOTANT 69010116.OAROr1➢.510117 AN.611.ICI AND MA SEMI.%PLAN UNGLUES SSSTd StiM.Vwl C,WCA11M 1Or 5.51FN. kr R , - I T i OPEMIi5C l.E IX TREATMENT V. 16 cc 5r5SEED GBIA x RAT APPRO.HROBE OPERAT66.16616. G ME TREAlud me A t VASTER DPEP PLAN wiE oMAINTAIN Ix[ j Lir Npa �.; la {`11' ...,fi . WEAINENT SYSTEM AMMO.10 EµmFAOTUER S SPEG FICAr O . N�` 1 i�C� r1NP.E000 SIABILI1ELso1RE AT 1W Elm OF TIE SAIRT BErd0 HOLIDA0S AC AMENDS 1P WEDEE THE RMIETRMi G C3 i5r' 'P- } ., 47 ♦ r v.R ANGERING TEN Sol 5 WE GT..MONO RUN EmTTs AT Au TINES v TIE YEAR .rs ac 'I k'-T ,G,:n y' I - • zx r 1!CND OF ISO R%x00r 00 ST000 0S MOST PE SI TOIL(no 0R LDVEAED.09 OTTOA WOO MOST BL INP.£IKNIEB To PREHxi CD 4 q 9 - _ -- AT IO 9RFACE wARRs W CONVEYANCE SYSTEMS ENDING TO MAFAOE WAr[R5• . N'-1 Iy O o 1- LOrIER AETIVIT1Es Nun INDID O NIx1N11E ECMAS1d AHD MEATIER a NEE M000 D1N1xr.NEI WEATHER. I.r7 R 00 mxsm I Q to _,- _ 'SAHTL.T FETE:gcNwc num.6DEEN1 BENNE T RcwEs ONE NIPS OF IRE 6033 SRO.s NE.1 Ax1 WRNS E. 2 EFLD CC g) ^ r' ` 1 I. - OE OMER e01 ANT CRC.(vlu1 As a MA..)FadOVE LOT..SEEN%IT RUC.ISO NCH%.BERM AB.Male STIOO.NO Q fqq`LLI a CO III I 5[�� - C'3 ¢ �. I •�I�•At 'L - 11.GTd eEs I5-• GR B6'GRE PElp11d CAPACIIA T.MEN x[WR11 BY r IFFY Ra�I,sFL1LEVT BASIIR AEN sE➢IACaT Tgtr3; W Q V O I • 11 A. 1690sf TRAPPED SED wENTS BEFWE DES.LWAC Ts T.BEEN WOWED as r1AM1 PEP.T E.T.Ar COuhEi DN U"NOECT C[ {� Ii C ^ ,• y A 1,.,- }- ,.. S&wwrx N 1.N.S,SIONIETANT...ENT MAN N.Lars IRE DONSTR0(1 low SITE NM BE 9116E ATLp INVESTIG11 TN�Y0q CS l 2 I t 1 (NEMCA.dA 6 E11EEMr SIDS To PREO0VT+AERROD[ANGRT 1x TO ME 66 0166.6 D10110 EN N T.SAME xA 106 O -I V I •.' I Iw yI L • - IN-STREWINTERN.. W Tu T DINI BE IMP:( xlD�dll 00000 ad 1000 wnr 1051 OTT 00,EF 00AQA,NixTE LAKISo d O sr 111115 TO LU 3 ,N},;111 LC- _J..FB Wig '{L l • -S .. • TO vs INTER.PI..IE.TEE u.LO TO OLEM.RICERS.SEMEN.A E } 30.36160,6 Nnq[SITE WET BE TENTOMRIl1 SIABILIIED L41N0 HGETATTON W A 1(Avr ELSCN LAYER.Wag..YFC1..CR OTHER O _{ ...ALL OWSIEx1196.1616Es CEASE rM n WS ON EON[. Ak Er: NJ s. AMT...N'. - I I T J.. 3I.RRuvr0E 1ENO1M d 0 si0BIL13All PER TEAT OCRI1o1 of 1M1TS s 0IE LA311Lc 11v1 1.Ec1Rs CLN4 rot IA DAYS DR MERE ••r:VLOOA CG'C1U.'i al E.. ITN_ A LORTA1NG W 1A.0WI STRAW PATE A 1A[M1R10,LOOSE SIRAw.MAN AOEOIUR c0(FR1xc LN cox..NLLL51 E110 WMx • r E6-01.U1 TIP__AUVLO CL + j.. ESWES ON THAT PceIId 6 AWE SITE - 2I[ ` - 3 Frt1NI1E Nm0M0I Eo05rd SCN1RE.I%AN!%E d ul Em030 AREAS On Nor IN E R.NIxo1 SEOINEIT O1Nr1OL PRALSIEES •.P.. I W1,ex_. •i Yf I _1�r d ILK IYAWH1 V TTII4N. EINONRROM R AW can...1 x DO R E AILETFNPDRMI£ROSIER wKx ND'x..>L • of 100STALLT011 N�1[Rlus AND 01510 1N¢0100 s[o IWNr 501015E➢Bma.sTADILIFED,moms EA.:s TEMPORARY BLas Lout Rca IRE Ex15 Pgv[I0A DISPOSE 41Rw-r'1 -NaI i E• I E.ULm, NA HAIL•ir»A.A.,.,.0,1.1.. ... ..... -.'. PRNODED: AN 0A1P NITRO N A- N - RCN IS� II'ILET POCITE1:Tl: 1 T PE I SEDIMENT FPENCE `r„p.n 5 m AKA CALF VIOLVLI W- - 175070 EC-2 '_ PRELIMINARY - NOT FOR CONSTRUCTION SHEET . Y f , SITE BOUNDARY ti ' iv:. .1 I ' " V I .J . i . \ C'C ; r+ +y EXISTING WR1 . ; ,, .. , ... ... .. ,..., , „ ___... [� - f ,.J •. ,-..-Y i,... 6a •4 4 I, \ 411 r ;fit �• •t'T , K 1 LS • ,,r i itlit hi , .... I it ,, •., I r ' ,.) =..2...__,,o .fir i` t ,.. ,,,4t'7i- ,,{{ > > . . ,., ••....... pA �T! ` ,46, f t 1 „ ra', Q ° wa ` Fig 18 c'yY�. L I Waluga Reservoir - Aerial GREED URISS (*411°swe9e.Tlyard grown, , p wafer P.nner:nio Caldwell BLACK&VEATCH W w N ` —SITE BOUNDARY 'lit -- 1' . - /. .. ,It— il..... . 7 . • e. �''-- EXISTING TREES /- :ik .' • TO REMAIN > sr T ` + ' .:* EXISTING WR1 11114 3 ti 'I .-r ,,,— •. 4- • \ : Tot, 1 t, .r ` X, ......... ,.� �'�lr a.y — �r Arlekk. 1 C' ll Al �; • r •r , it § 1 I LIMITS OF i t + / y "4)•. ` CONSTRUCTION �4 e I t-, m v -,,,, io,t.. , r A •• . . . .11 O m •ej . ' F'y t Z �•I M �� `• E ` ell •Ir F,\ Fig 19 Waluga Reservoir - Construction Limits GRE[D URKs *LaieO,weyp. ".d BroAwn .�Waiee pannershkp CaIVWe“' SLACK&V€AT r' 0. i :. x S!rE BOUNDARY . y '� ,, m l w � LIMIT OF LANDSCAPE ;C !ir'j, at,. RESTORATION • • ,4 .; EXISTINGWRI ' "' DETENTION PONDS .-, IIV ...9,A, 11.4 . . - -,;:,„,4,,... - si !' , i '' - ,.`r .�t ih► f• MAINTENANCE ;t • I ! — _ w I '�:` I ACCESS • x i; I - . - -'4;4i,;, f f r ,. f N. Section/Elevation A I. o ' 7- `� :_ e . i -A' :� I4 ( Fig 20 Waluga Reservoir - illustrative Site Plan REEntLIOR S ®wee ej,o,A Brown.. 0. Caldwell &um&yEATc , • illi Co.) CA.) 34 TIN r 1 h eD "� -:0- +IV:- - " / =! _ per - mow),,. W =t. f ' to Ff tt �� _ _ �ry l TD EJflST GN f' til`i LI I !f .,wwq f f � L. ,,t, I 'P� 8 e ill g• l p® aL� ,/.� calif *�' �k 4 5 ` \�!` STORM SYSTEM F © !' ' r ! V' Ada+71f 1 ;'1} �T.:f 5i 1 i _ l� I� 1' to; + % f II f I� _ a. tI 1+ ▪L.{�, "-'��� .163TORM PIPE , I}f I ! �! ,p'�� f ••J 1' Wy r �1 `�' - ,'W OVERFLOW, ,"�1 d 5\ +�'� � LIMITS OFOISNa ANTE DUE To f+ EN�TIO�N(oCI1pp��f '. 1 019 ; „�, �,„� o � ' • \ ,TEM�PeO�sRA�RY CONSTRVGT ON I 1 $EL 6$, I , - I , 1 !�Lif �; ` \ / , '.ryE+;�er 'AREA is SE [1tv 22�933I ,I+r i I I 5 ,� 'i �� �.I , ! + , f o �,,ItA 5 5 \ , n 1 I i s f kcli.r r s� f t' ,, , F F2 :$ y It I'+�' �-r-- r, • r.rr Aa •,-yf� C '�' % ,^`i� aZ $ i�^ffi 11 5 I r,_,V':1 f 1 i v'S / r ..r ,�If .+ 5�•��t¢'WIDE ‘ % •, - l 7v S g - 1\ti ' 1`_ ' th3'L---0 ,./T �, --, f aCCEas t y } 'C dF%T 9�"�. ', f �A7€ ! X ire n a I Y I H. ` 4 1, :,BOUNDARY -'_ I ° N 4' ,'� O SYJ } � '1 a i y ^�aa G r Lv Sw STONL AVEhIUt eo 40,. , I ? D gN NAI wf �. ' T— ux,MPRo 01 m� }I ' f (]�"STORM PIS �f� I 1 u SS'STORM PIPE I_ y� I f 1 3' • LANDSCAPE ç 5 % .%v• "�f��=='� � / �w� _ _ �JJ_ • t_ STORMR !J I' % a! �i I Fn , ., �[ I 11 f .1 r aifT1'FILTER THAN 4 HIOU) f w�<I,I' 1' j.. f 1 � `V+�V/� �_ >,__ }_ �J 1 ,. !f, 26'STORM 1G J , r,r PIPE -�.," y` n�*p��� G .;.y.� .rya �tN� I r ' y __ ' a'R i 3�Y5ii ��' u..,,,,7�9 a� #.,,..""" �'-`.. •.fir- ----- - -{tom' — __ r°, /• If ¢40341-$0 -GwIGDNTRP� • r �. `„yC � ,.m/ I Jfr I/ /�'-`-v ...... ! `r FOM WCI ::'' rf,f/, .f�� _ ,0 t - 'I ;I Nh / ,, "�� 'n2cc"E�s'7� ~ ����i11 W'A6 RE iti' ?..�6 yLI' i� ' ' I ��� Z}f.�,�/ . 4 ,"7®M� I ,� �" `- �'SV`0 t r LJ:Jr 71a� —I `I I ' $rt a'' i` `v' f tir/l II f '' _ ,`jl ' , - � +:v')'t 1 � I R; Y;'�t"`---- -- O1-� Z UJ �a I f �`�� I IT of�M a NCE �� �� '[�� 1 ? i a ' Or Q 3_ T N tegiFtou�Yr w, if-.4 gT PENa¢ ., f � 44,1,4�5'- i ,+ , I b]¢¢ Q 5, f I _ Tro�v E4Ev.�zs�a� I 1 Q! , � ^[}�( , x Owe F- I .,r• ' ,0 ` f ,a+? `�°O I _r-r1/' frPipC[� ,1 ,l -' I'. s ,� 0 f 1 WZ +� ' f V, .i \ BOUNDARY IA Et /j T f _ ` _ I crice LL lf11, ,I 1„��,If��l f '�I + I +f f� YO�l,✓yi I I NO; 1 i4Y�iy_AM ��- —� � I I'" �__�_ __l' � N �' ,, H ; ' , , 4J I trl y 1 1 � " fl it `y , ' �$ I I J I �' `� N m I I/ j,,,'I'I " -I ' SITE GRADING AND DRAINAGE PLAN '° n ES "'vtke y r=ra � tt NO. 776a76 =.n FIGURE 1 W am 9£ ! I I {! I'II IIIIIIIII III111101 I,11IIIIfi 1,1i1Pbli1IIi ii 1i11 iii 111111111i IIII IINII hip!hliihi ii ii Hu ilili I iiiiiiiii IIIIIIIIIIIIIII I .1�I 111 Ili Hill' Ili II .I 1 OH I� IIII � IL. III rn II r,IIhi I11 VI 110 ►1111Ii1 ,,� � 11 1 III. 11t11 111 , . f !iii i Ill. I III 11� m III II I; 11►I ,� rn 1F it 10!I I III I z I II1 II =11,i l o ' Ilit.1 . I11 II 1i I o III11 Ill � � . II11 I II1,11Lii ' 1,111111111 < IJJ 1 II HI 10!111 I1 1 4e-ge III EII ia4 ' . 1IIl I IN I! IIII C I� l;,I �'1III;II LI ' IIIII11111111111 II H111 II - I '# ►!, II . llIN;�I111111IIII 0 II 1 1 111!i no �►I II II 101111 I II , 11.1111.Il l ,1I1111 1111 ILI g II III+IIII,I 1 II II 111I1111111 illy! 1 II 1111 1110.111 11111111111 I11111 Ill 1111111 111111 I. h IIIf' fill I I ` Pill I , ,I��' R r i , I 111911 "' ''' s ' ' ' ' ` Ili1111111,. I . 111111 1 iu 111 1 III 1' 1111 II 111111 IIIIi1I111I I IIII 0111111111IHI 11101111110 I I , LAKE O$WEGO TIGARD BLACI(&VEATCH a _ WATER PARTNERSHIP �.eUifnjnuaWUIIdat�Herenca c o i !!!! WALUGA RESERVOIR #2 ai.ck a Vxa1n �mn a ,....,en _� mnn oa WR2 ELEVATION PLAN GRAPH s" ` P9""'"'°° "� m. w FRONT AND SIDE YARD i_ nxxn.;oULsk<om. eas-s �� r., - 1,.vm = Green Slate Willow Green RESERVOIR COLOR OPTIONS - - Reservoir Vent lAccess Ladder Not Shown) Existing Vegetation Not Impacted Proposed Planting ter r' .K,/ 0 _ ems• `: i _ sT -` Proposed Concrete Hex.vWr vt-- i _ ' . — — Resen[e t 14*1 i f f 133.25'� 146.5' Proposed Grade Note-Due to the variable nature of providing integral color Section/Elevation A in concrete,there will be color variations of the overall Existing Grade Scale 1'=le-0" - appearance of the reservoir. ggx Existing Reservoir ri$ ti 192'10051de Diameter) - Existing Grade Section/Elevation B t._I rr1 Scale:1"r 16•-0' x x kV W --1 O �11 fig21 41' CO GREED RIORKS .® INafuga Reservoir - Visual Impacts �WalerParshipard rawn,.el'- Cakdwl BLACK&NEAT W fl 100"I''''''"Iiill -----__ ::::"--------..........,.......,...............,.........____ ____________"/„.)// 97\ P..11dililillii. II'll, y� ESOURCE N N5ERVATIO a1111j BOUNDARY T m � �> LE.GTH=1,250 EET p „ �, ' III `����Ili m V.z 8 1 '�3 ���, I II N ' '' SCALE: I '=zoo' gyi a$ -�: r 1' Y�1�1� r yJ �{tit:':�:•:-:•:-:•:ti'::!':•:�:'•�:•'':i: 1 i , - :fib :•::•:- f'1J� �. .: . ; :::•:..;.•::. . .; PLAI <�fTY•'D��LAKE'os'V�GO- :'r'::'r'::>::�• 1�:33 •'t-us 6:`'`.:: :-`:::.5 PARCEL II r RESOURCE :• .... .0•:;;:;; :; ; ;ii;:;5 - in CONSERVATION FEE d"7$-36977 iy:: R A?BFE;ast�n'.4Ga?;9Gfi$. _;;.;:;:. I d::-ri ':}i::::i,i'::::::::;:::=s:. :::: i;::::: c::i-:; ; :.V. �� BOUNDARY JL LENGTH=75D FEET i� n � 212.1 120 r G w0 '1 1 - 1 J > r 1 JJ :1 J 1 3j,,! 1l. 9 T CITYF 0 AK L E RESOURCE 05 GO vdE "J. it 7a R VA ON K s DNSE �i fi�J �r soo C r^ sas BOUNDARY J� LENGTH=2,220 FEET _ r J CITY OF LAKE OSWECO PARCEL I FEE #72-06414 ::_._: ;:;: :;:;::;::;::::::;: RESOURCE AREA=1C.Ot ACRES RESOURCE RESOURCE CONSERVATION :i: CONSERVATION a':::: ;`:.''::•':':;::::; ,26' BOUNDARY ARfA {TYPICAL) LENGTH=I,200 FEET 250' i REGISTERED ERE6 PR OF SION AL P 0 S L VE R A U R YO '.,-..\ p ... .•••••••••........••••...._......•„...........,.......... .......•..... . •...................... „..,..... ...••••..................„......................„.......,.........•...........••.•...••••••••.,...............••......• ,.... .. .. ..... .... ....„.... ...... .. ..„ ...•. .... .•.••• ..••••• •••..•• .•••••• .•............. ............... .........................„.• . ... ...•........,•...„.•...................,..............,......•.........................,..„.........,......,.........,......„...,,.....„..... ��ORE 3 D� ¢ , s--- . DATE 06/26/10 �T TOBY G. BOLDED DRAWN 6Y MPC 1®' �' S��IL� � 60377LS CHECKED BY CONSULTANTS INC. TGB 12-31-11 REVISIONS 07/19/10 ' ENGINEEJ3IIw JOB NO. 458-9�(B) PACIF s vORSE EXHIBIT E-19 RENEWAL TIGARD, OREGO _ LU 12-0044 38 r I l - - I a • 8 r t °�na'a- II I `yam11 f r �.; BPi ____\_,..z. ,,z-_,.,.._":A(1./: '. 1 :'..,d :.':! '-',•:-.-• ::: ,. :'''-i ; i''':i*:. ' NMI\ l- r� / • r l'yAa iBR� k f / FXI$TING WRI AAA, — �' 2 g$ .. • f 1pc a Wye ---,..............„‹.... -....,_ , • `'I\ t l \ ��r I} I r. r!I r ! r r �_ /�. ".'\^ ` ' '� I. 1 ti 11,=ill B. qRY, T 1 �-- 1 a x ��; '�\'L I 1L ��1-' Q r`i;i rrr I ' ,•r ' ,r‹1,. 4 f_ , ° I II ,1 I 1 r 11 r 11 t J \ \-h. v � — _ y�4\%4 1 r` l [I k}_),.--J-' I 1 i _ _ T �_ _ v t `41 lti�� rl�] y II 1 l� — �� W� I i x:' :i. I I ! / dl a a° ll�4 � `f f I- U3j f I !1 Ilrr' }r. r COY / ' f 1 IEA ,,,..,,,,,.......,::::,,,.. ,....„).,,,,,:,. :„.„, „,„,. t1L'L __.,„,„,,,... ,, „ „ ,„„„,,, •...,c-„,..,„,,,r . ,,,„„„,„, : ...,,.., ,..,, :.: „,,„,,,,,,,. :,,,,,;„„„:„:„,:„,,,,,,,, , , __, . „ „.:„,„,, , tiro r 4� St` , , I I f '� i; ct .11)J; , r , 1 L, f k�! ! ��� �i r�'n ti ¢ r l rr 1 1 o -, Irl1 r r 1?J !r! ) �y umlrs aF ca smucno I 6 q 1 < OISTUREIANGE / !}.II �'r 1 F r'! r11 I I 4a,uN9 I -- + I I 41§3 y ' - LEGENDI/ /)I iJ 1 1:: 1SBC6RCFE CONSERVATION DISTRICT PER THE CITY OF SAKE o3wEG0 _�� f it! - l� anal�w: mm _ Y ' r rt mrs mw ars xor .eur l•rmo zu" r fil RESOURCE CONSERVATION DISTRICT PER THE CITY OF LAKE OSWEGd °° °� ^oxret r�. 2r5o7Q T FOR RCPA REPORT FIG 2 �v �e PRELIMINARY - NOT FOR CONSTRUCTION o • o rn Div o W cO 1 , ` I 6! /— �� , >, .. S ' r ' ag lik / _'/ f E%I5T1N0 WR7 i $ $ —` I I: E GGE . 01 :. -1 !Ul•• ; i . • ::':4-;:L: !'.. .:.Y '! . __ / 1!! r ��-, I f, 1 1 ' t 1 1) ;r. ?)) (l�,Rr�'rl( , .1 ,f-7 - /. % /\ a .`!r `r ` r PR PeRTYBW,N,Ar }r-, f F r r T I j� ,r/,', I+ , -� t ` - --�J �- \i 7 ' \t \ ti ' ,4,, i r; � f, + � 1 +1 r I 1 { /' / � '- 11y, 1 \r '' K i 1 �=J r \L——` S it r i r i 1 /J� �' r,/ R �r 1 Y__ C,F +I TT"I� (� i ( / /! , re E`� \ j I�1�~ - _ - -� a m Y+ f ' '+Ij J ' itli . ` / _ ee� 1j f1rJl� �I i� ? } �m 1 It iii ; v� ') rr 1 �; ; i,. . r- j 1 �m m1': fk_i l it �JILI _ V 1 1 } tl 5 -�1 ,;„, .r + �rn hf rl y Y ' /l/I , f ;1 f �Ir )1 r, i' ��, C f�I 1 ! JJ ' �l� r1 rrl/k ��, ' _ _� —�.� 1,, -/� 11. 'l 1 �' l �'j j � YI/1 1/J j ..�_���� r ) V� �-1 I I ,� �.// �Y / 1.. / 'If . l it 'III(l / ,WR2 + 1 . /(•:. .:i4. -- C_I/' ,. „„,::::r.7:r:r1,:,:r,,,:::::-.L . rr • 1� V i 'V ,,:ii.: ! `! }'- _ H Fes. r F'41 cl • /.`�-� I! rf{ I, Y I, /i 1 >l �� - LEGEND41 /'. TDBEDESIGN47EDA8 RESOURCE CONSERVATION PROIEL71gJkR8A8y6PA) dW� /j7 / i- 7 _/ I7 , - I/ql;, RESGURCECGNSERVATIONPRGTECTIONAREA VF lrl;,. F t I b / AREA SF r I ,,1 r Ir r' Aaeogrce Conservation District per the c d �f/�F I f - Lake Oaveno(RP) 235668 tOD r _ I rr f I Area to be Designated as Reeonrw pEpt�; ' _~ I Ceneervallon Pmlection A...IRCPA) 118,D1E 5tl.2 eKaua: Zo mn's vier _ (PROPOSED)RESOURCE CONSERVATION PROTECTION AREA .• <e ��. 175070 N FOR RCPA REPORT n FIG 3 o m PRELIMINARY - NOT FOR CONSTRUCTION II Y 3 •er 21EOTAD Or001 21EOTAD rILOAD . + 004L0 00500 27F.07A0 2hEOTAD 31EOTAA Offal 00MW mmtt • .(! )et;07AO2rk WAD diEOTAD 21EOTAP ' JOSOo 'M505 a• Heritage in 1rEurAtr • ^,� 21E0MP • 010u0 r *Mg 2tE09AD �•. avow, 0Ost5 MOULD OfS1t 21EO AD e J07 L C.,����� 21EOTAD 2f$OrAD `t timg Wsf7 005/9 17E0rAD 2rE0rau' Ooh'MOO 0t5ul lfil 900 27EOTAd WOO fait Parkhill St . "—I 1 Fl 21E07AD 2,aO7A0 21E07A0 .d 40 rai0n 01400 fQ3 O 21EOIAD [tEOIAD �•++ti 4.11. DMe 02100 Rtr...4 . fl �.9C41 0. o.... S:il Waluga Park • 21Er<7AD +L'! I ward) k j ?• ward) Isi :; f 7fE07At, mat, r + t f + 34 4 a <.lr•r4 V• s _, 4 iz) k. :n i .!...e.),.....-ggi::.fri.,•-••••.;t:!:.-i.,.-:::iias."--.:14.4:.g•'47.'"''' -' -/ / •7:ii!..q. ,I'',1:74,L:.''....i::•'.:7:::.'lie.%•,,ir'.; ,,k;51?•,..1r.••3• ,/„:7 ryr.X:t?o 1 ti L.+ .ram- l 7 l 4 uF • Legend CP4Yafu9a Rasorvok studyArca 1'ipo4ne Layout Figure 1 Resource Cos serration Area curve Moor amour Lake Oswego SBR$lliWe Lands Pal (Surveyed by -R08d'"sYs ---- Moor Canmw WaIG a Park and Reservoir Sites ®e,25'Plpe4ne Corridor — Gravel Read/Path 9 Lana O...ga Wetland a stream Corridors (0�J�)Lake .�.•.�ltaaleed Oswego Stream Candor(as mapped bT CIA' µ--- Fence QLake Oswego Weiland Imo mapped by aw ---- Proppty inn Source ineVont EXFIIBIT E-22 D 150 3041 2009.ESA'ArcGIS Online.Wald lma i 7010.Westlake Consultants,mc. Aerials Expnsa(ACV.Portland.Dragon, N Foot 20r1 Lake Owego Samara Len*.CAyarlake Oswego,Oregon. 2°t' 10. Anw LU 12-0044 rww'u slmoirmomwowsmmn:na.*�4uaavr.,.ptuia+_vz.,a,_raw�cm,enaKsoag�dar :taT,e D 2,10]013 rP1.Iara..3-7 M tyr,:annt 41 W: • 41. ON-7,,r,,a,"Itil ' I,- :,-:›Ntlr,t:A''1,-'.15 '',"r : ' --....-igm: -:--, .. . WV : - .:Slip,.....jg,,'r ,. : -,.., --e ..-f,......v., . t4„.. -.7sirte,-,a. , • ,/� � .• yam` 90 -�. Mn •. • • .Y�, + w.r • „ it • , .. Wg 41--- - _ 5tINP *. :- 4.4a .4 . , _ ( err' r . :, : ` 1, ••• e R. /1-• 4 • • - • Ikqt •,•_ 4 to • _, ,. N..rE17k ,- - •, E ti' PI- """,••.-40r�, i t•.e .,ht 1110' ` i v ! .114., it.' �V a `ICI _ .a .lowilP „h ~ .• x z - ✓• ti' �,. • '♦ J ' .tom _ _ °S`.• .! 'e'e 'y r . �V „ f. i . S ey •+_ _ •.•fir ' ..-. _r. f -� t L ,,,„` r .... w ;, : ; _ ti.." *•y r �"� ua . . , • ,yam r( r • ,` w a►r - iin '. �AFy '• `f '"*�3_4. 3 RY fit. '4[ .i. s t J =ram , , t ai—' ' • ? Al • 1; �e , • PRRI I 'sT ♦,• * - :. N til • F iy.. - ..so 'f �� fit - 7 �''"; • a.'T'4. . ,, h�x�y ....4. n. _. git + ��, :•.l 3.,.. ., • eyrr` �. .! • ,'l O.- - ..y� ,� fir. w.- . • • ....., , • gr.;' 0.-V"?';,.-,,- ''' ' -* r.re; ;:c, _„..=,,...p '' ' , ,,% '4.!..'-- •1' .--.." illie 40.. mo" '.a .4�et'G _ .�,., 'A itv'—Prepesed Finished Wale/Pipeline Alignment `. •..." e 3 4.., e,,. ` i �Fxisiing Kin�shetl Water Main - - -i .:-A,- r� �. f - . • lri. yam, __..:�..w,.. Lake Oswego Tigard Unified Site Plan a ane Figure 1 Water Partnership Finished Water Pipeline and Waluga Reservoir Fees '" 9 EXHIBIT E-23 LU 12-0044 /14) , \\\,\\; 1 ryy(e.., _ - ' Ji � GRAPHIC SCALE ' � sJ9ze a ^ ( F �'eS 8160 wa d 9,80 JIgi�PdY _M1_ � R6oavRenoueaumarl . cw6A6E CAM Pt iY• �yi �,/ OIISRETE PAP ram 'i L F�� �xu TPf✓e/WLB ,,..„...,,.._____TN....._::, 0[ETAeLE ON J ��L .91801 -'' :9193r : ` m r^€ h PAp �oggg�g�'1 ' -1-66666 OM. Y ''\ FICHICYIaI' EEC lnd. ' I. . $1 SS- ��'➢ Pl✓EMNIS SUHFy1 V,•-t1 Ij 1 IDr, E, �' t `1!& Y iri 9f99� ess -" ` r 41 Y, �i •9,520 Olex, • '�^ r. ..tom," ;r 6' TREEN01TAOFiG 491]99 A •i _ YTnu �� / TA6.9a6 • ia�� -Iq¢MM1N0` " _- !• -- ' Lll oiliI,EONwtvlai9slm9e'r. ••. '.•A..�. �I�cti {)g2 y�V ,1 -_�br '"r-6a TosaiArerl �o< zJ 'tR+� rirarnu �.. �� I a C)da N �J �5 ten°' �/�i.�`�' ,rw.T.--- �a 'a+l °p a— �W. eicrl d xw8 }� � u 's ,,� 11111r- oG° -f _ �exw6aAuer qq4LL a= �8 .,„ i lLAA a, n Fu9c- v .E.w9sic• d .__. 1: ascs 'l ..,colw _ 4�L.r a.�� gx O=oaCAMEOeo PMKNc F� d� t3 kb. AC PA.166XTRlANNGLaT y w - u13a a w - a � :. , a al 0' yl1• r SYS]2�, T9P Fi r_ D9•Oa.mA 5316 �. N 328i8 N 4,M:2ae6 32., ��—y "J •� 4•k ~ v �s EHTPRR1Mx8.. ., WARS Mg4 r / big '�-g41114 •; ` ...- g� .,�„ z� iqug z - - %me- 0011/ re �23xa ev ,- Tzs2T- 441 ?1 , wxe• m Vl .6 6';a r i' rX < -I,- - lrtinl'FTe,wsar AnRDFESSIVIJAE 1 , ,.... 1 I ,� THE1amFx6A0.11.65 LIPE681pxM1nvEaF&xlmw,EP MOM iEln13,16. LnNo .. OFNANtxH UP EY M.611.1619.11.311R4E.1ed6 6.GOMM". �tffau 1/4 O m AA.E161E6W 9.10E ORA6N:64.0ITHE61 RY..OH ALL w67NER PlOf�-.B,NOY Y.Ix tm• y�ET o G BOW. AS P656a40G1,61EN0ExGROOUIPO.16aa.NVEv[xt NAB NO, 166.. 11 f3-31-Y1 J09 M°. "" O4 -c17 i 41. C+D I -R -mom ON MC -Ic-24 ir111(Imn]...1gnymLw.1Ku. . LL°°LL r K .�n�n„L,3� aNl'aNvwnvnaunpos"awoadae�noew alma � xiaLxtllCrisYo3lrJOl3ar,�1NU.wduir3793Pa SlNpnpN11y 03AY.x0,a 3 ]A 1 Ng1.18503 33nLN13W IN•nEr...O 1nrav 1,3.neorNI*J*fl wy 133N5 N�13i0 6NON3u}Yi3-rry39 17100N OFIS Vt.. t I.ala•••-WIL3XL3l'-m Bryte,N]IB'IT'/3aal jNN.1.111..n.snxJv,N1911dNLL �.+u a I f� 9.1ns 4109HeY vwtpA3wna3nl'Pu.4.1 Smlluna O.vwuuuV1 rn4: 1l N �a491l 1ptld 1vi393nvn w,IC1433�tlwt ullgna![i¢,,113H1 o g v VI arvY QR ,nw v,sunurt n g lMIA" • nmpIo ,, Tv p _ aLi �ii 'u ' ty . `a.. ` o annw. ' T4i :ziLzs a ql' aa, 4 � I..,bo n : . alsarr ,` u If.;'' . N �.g mnN ma gg azM 31B.J LSLf Ldd• �o � �, /VL 3 quA5 ...„.___ ,.1,____..., r.: . •1-,-;_diit.....:-.. 00,. , ._..K.-,,.-2---1-.„-,„i....,,,..7„:,--_,----_,00-- e _z,72:n_.07,3- ,—- _ '.IS_,.,.---.-.,.. _--_7....,,.,,',,,1-*-_--.v.---.f,,-4-4:.,.r'11.r.,/,,,-,j—4,i7l,Pi,r0,I,'.,,/,04 0.", —.l.-.e..t".,.r,,_,,,,, n 9L9Z[ ., , J' /y � r A„.„,,-"',-- 26 ,:__-,..,- ...- o0,.. .ZC ,...,'.,,,..,".,,t.,,t,,,,v,0,,-L-,,.1--. e-,-„ .......... . .... Z ,yd'J4 / 1 `( Oi .6rfl � # A� / _,r Jf �R 7�1 43F�-S� 4'is —{ wF l M1llz: zIILo sL,, ' / /G� 4 � -r i - :i,scacc n�Z)x O -M9nri6 6LIZ. " '„ \ 3SC +K'"'^i -, "' ryi � yy z ti/ 7 Art....*N '•' -11.14kri,If.-,A,-3: 14.----:"--t--'=-4 ;'`A"'''''' *"..... ". 0.old,. ' [ c�n�^fn °m'' �rlsa:!. tl --,nN. 26('',.\R("($110.,,f,41-,...--witiFiclisiallispo,,4'1.a,-,r-to- ,'b skwi , ''-',„. :, ....'lit':-7. 4.411t\P-C,-It:: 4. ::.1'''''71'IC F �zz I mmW- aW Z" LSPLC yN MAIMS 4noV43dd 19 dELL f�lk,�� - �, :g:,tf,-*, L OMINI nNloN 333a1 I+1Pg 1 Lfl / q,6ge'n ,{,�� :3LON otI� : 1:ON33Yl'/�I nc, iA 1 - .�Q` 4 .FW tS.7, If! I --,-_-_-y .iJA' 1.�I1I t��p-_ "'j �. 010 ,, slags f sa . \ .77iE00_ , S TWOS DId d7d`J a •- �' J # - 1 W // ' ",Fo9s6, p'u�F Ill V Wlr ioii L i r.'IDa94 '` 14 $ V V - ;fif ` "- rt-- + , ` Y* fc�sE PADGN PARKING' 1— /1IfI��•t l ie • .. . . • 1 �� • SIGN *f� I �. ( ,...,5 .....—vim— �O W G l w ivi"ac . x,� PPCNlG TMLE ON e_Q7, � e �•I N(x'.xr)axxe' q}./ CANCRETE Ap[7 xlJ�y� Ayy F 1r1'e',xl esn, r ., PK:NEC TA8L6O ,+, _1//4� LF Li \G .fR ■ • CONCAESE PAO OCA)<'KlN4V _ `—Et / ` • -� ��` n .� OAgs _ v .. N l ('�1;2G0 i WALLIGA PARK' C5HEREfE PM7 _ �'T ''( •3: /. / \•,,, te •E‘...:! ..' ..•-• • .i; 3100 Ow- o r o • 019 PAAK[Ef0"- / lik: .....•---___.• w *w� , .... 1. i o �, .4tor. •4.. .!GNI 1 ,. Q� / A ▪ 't�, 4 sit ti't 00 ~•_ .. J wawa' :... 4 /ni � .Y :N.'Sln I iia ,, .' I.0 " ' / PP e '�AggTpA1L' ��`� 1 j�:l r! /. ` MONUMENT - �I%Za85'TALC 0G SIGN .bTONECOLUMN r%. .. ��` / / 'p_ .92OOO i �� OH S` •' , i� w ,, --, 77 g,, e� N. r -__—_� ~ .„‘AA �GpP"" - —— n'�`�.� ..P '' r �''_ 7i'' 4.„ • Ill /"- --Y ,x, ■ 0,- •ywF ! , 1 f22.1. •HaNC1cAPF�U'---.TC.• E"Tai Y /// / '. \ �+ � �r ! 'YJA1Nl1W SANK RULES" ` Al 1' W TI 1 1 ���/��. /�I �� ~ti ' _it"- ,. / / �� ■ : tf.'�,C Yf•''U / S 1.::. ;ewy�_ \ �, rp %I� 'It- li _ rvV.1 ar i'6 3267 ]+ X n oitY 1 • • � p O Fy '..�.. 1 d:aa �� 8 y ��j Ate. - - S" , I T!f;,, iyr'ri� - <v 'Y/, ,Jr 4.- _ .•: GATE , J �- 1 i,"s� O T Y/ / V1� / -� r�N :.. tea: / l/ --ill* �- pop • c ( ! / 5 %, 3 1` LEGEND .P # I , 0y '. l E ELECTRICAL(UNDERGROUND) -� p # ' L G GAS �•.,4;., SIGN OH OVERHEAD POWER - // ` -Att.PETS MUST BE LFASNEJ - — -- PROPERTY LINE _•TRArt MARKER ES SANITARY SEWER Kennedy/Jenks Consultants J sti STORM DRAIN = T TELEPHONE NI LAKE OSWEGO-TIGARD WATER PARTENERSI-E1P 0 -w WATER FINISHED WATER PIPELINE-LAND USE PERMIT Q s SURVEYED EVERGREEN TREE LAKE OSWEGO,OREGON . SURVEYED DECIDUOUS TREE EXISTING CONDITIONS WALUGA PARK 4 -- SLOPE=20%TO 50% n 2 0 40 K1J 1191016`20 SLOPE-'50% APPROXIMATE SCALE iN FEET FIGURE 2 EXHIBIT E-25 LU 12-0044 v,_ 2- pctieS rn ��11 EXISTRc WATESe R TANK !#- 1 r *'' '1 1r'r 11', FF'EL 3dS ///0// / •*. ti ` . .., .1,. ., -.......„.1. ,...„.--2,...----..",-., -, 4. `.' \\\fi e y` /"+� .,ns\ Z }' _ 'i* 4!" 92000 \ \\\ y \�\\�\.// I \ / f /r � e._ :;., ________)), lit ,i Pr"I 4:i--I4'l'?":1:1 i<."" 1 ' r J J /ice/// !/ 1 1 1 f / :1:::::41.17..1>: r- y •, \ 1 1 rJ y/jii / 1III / /t/ % u; e ` r 1, \ / / / ,,^,. J, _/ A/ / / l3';17'""P y \� \ 1 \ \ ,I / 4 \r '" h'lf ,-/// s/ / / / �� Wil/i 11 ( _.,, ..• W c� \\ ' \♦ \! 4\ �:,F=.+jIr 1 ;!! //////! fl ��� / l`v� �j1 i/ 1� 8:1:1":51' 4 ? 0J11! Ji 1„„.. •' \\\ `\ 1 '�' \4(} 1 • 1.>, / ,� 1 / ' // 1 'j1 I' •t'I p !11 ,' ). , r-4 44•i•J gyp' ` st , f v 0 l t 1 1 V / / f f ! �;11 l i/1 I I, �+x 1 !� �� �+ ' Ytr a y{� .\.,,,,...:....: \ \\\ ` ...........\ \...... / 1 1 1 f/1 �,;. // � 1 t,}5 //',//'- �,f..r-' I F 1� \, �\ ( ) \ / f llr. /// .. T / •! @ . \1,\\ -. ti�', h\ 6 q \ /IV/i -,../ %/1/ //,/ ra. .r-'1•. // /// /<, 4 r�•e / r. Le R \' i _ -.` }I 4t 11,1• I !ir- ////'j /,r/� tile- /. , / R _ _ III. 14 ii �:- - / PPa, f/ ,e ve- _ / ofe sail J x 4,‘ . .)j)J t YIt / -- —7//r ifi-43//!) (J11'1/ '3 r//i !', — / y1'` ''f /4.k-° -Al PETS „,),...e,-, -,- _.,..\ ..,,, _,.-,-;-„,,,,,, k � v !1 / ' 1 I ,// ///r ��� - b ♦_� ;, wt /// //,',/ / ✓ , 4 I ( r z \ 1/ ! -_ %r-� i zs't /i / f ,•;;•- _ •I r f 4 / ' `y No. / Tana MARKER LEGEND #a /i :5' / ¢ /i��� ,-1,--%/° -, 4/,j/j/ r ! •' ////1/ / tit / / -.. n . / 1 1r._ £ ELECTRICAL(UNDERGROUND) �. i' - y' §� ,�i�i /f •r''�/f!/f `,� I f \ 1 �� /l ff ssF� ;/COSrcReFE GAS i - i��d�- i i // //, ' I '''r / 1. "t/ / ^' P _ -J i�� >/ .� !ii 5 I ,1 ! ./ ": !1/ Ii OVERHEAD POWER r/ �, /�i ,i r i i / I / PROPERTY LINE /� r / // er-,— - /�l , /e- l / / / ss SANITARY SEWER ' / ,s/ ', _• ,/ W I 0 / 1 / 1/ so STORM DRAIN //„ % / . c \ . /\r� - — e = / , // p£, Kennedy/Jenks Consultants �rjyF T TELEPHONE r//t!`; K J =ale- y3� \ / r /' T- I r h `, ,, / / .gip ea LAKE OSWEGO-TIGARD WATER PARTENERSHIP w WATER ' ./ f + .� is'^-a� r -/ '1 I '\ %,;-y I ' / / / / 4 // r / ,- jf FINISHED WATER PIPELINE-LAND USE PERMIT SURVEYED EVERGREEN TREE r/l� I I`y / A 'I / , /1 r`— / ! ,-/--,),;.(" " f/,/ LAKE OSWEGO,OREGON ik,( I / I r ./ /.' / / SURVEYED DECIDUOUS TREE 'r, i�+'�/ ' I , / /P' r— r .,a , !I / //%/// / WALUGA PARK EXISTING 4r /' ' / °; / /,"; f x • ':/ / // / / CONDITIONS SLOPE=20%TO 50% /- t' f = a•� //� / ( / '% /�% ,—4- ! //i _ 7/// //1[ 'O j //// o ao ,o KJJ 1191016*20 L-.__-- SLOPE_�5O% /,!� //- '/ 't• ,// C I //// APPROXIMATE SCALE IN FEET FIGURE 1 irl ` k J� �!r may+.! GARBAGE CAN ON 'NO PAAIUN�G+' —✓./ N . •A • ` .. �y - T AWNCRfiE PAD- �•'IySK`l��1 !1 ♦ 1 • i • `� SIGN .;, ; ; ,- EXISTING PAVED I 'G IN { sa,. .Itiji ..,,,0.-IN 9.1' f4 21, a.NIC TABLE ON FI 1i \� r.��rlif St • R CONCRETE MD ��� 81GN j 1 1 I - } `\ �' 12601 • 1 { • •wnLucn PARK- Gaf �� aATficlNc i� v> F- --_ 4 6,,, _ _ — Y v— N.—SIG C7 — s .. ? 1 1 _ ➢ARKTNPIL' ■:1,':',3,4. 3100 RIM / - . •.' II n - — MONUMENT �21c�'nS'!A!: .p -C `� Y_. SIGNRFGNE OtIMIti s :.' CATCH BASIN / �/ ►� eV., 1 i FI: wn r p r / '..-.-4~_ INSERT BAG ///' /•, -HANDICAPPED PARKING' Y �'II J o -� � - i --a.........„� • ~� - Oµ .. '. "eik I W ~ it /�� �f$ I' • / � r t/� _� - • :?.2_` 7 T_ ` Pe von /:. ' ---:::.'ei x � "pA ex13*. —-- - � NO .r+r :`P�!J SIG I eumwo 1wilts." ? re i—`—— w f "' 1 ! / •HAxacu+ o PARKIFTV" I tiI ,-xG:. a1.6 /�/ / 7N�` �� A• ' /��,r / ', 0.EGA PARK RISES Y`x� e s.' ��:''.. --f�� .0 v+ — �! �1 � SD LE I R, , c \11 ..''vim'''' .F' '• - : GATE LEGEND NOTES ! I. THERE IS NO PERMANENT GRADING ASSOCIATED WITH /� 1 _�7C _ ham~ CATCH BASIN I - PROPOSED FINISHED WATER PIPE THIS PIPELINE CONSTRUCTION.THE EXCAVATED TRENCH m / i11•A}�/ `f. G7 7t INSERT SAG O O O SEDIMENT FENCE WILL BE RESTORED TO PRECONSTRUCTION GRADES. +}1 1' ?' �4 - WA WORK AREA BOUNDARY F— 1/ i y, r..r!.•-, I.: 0 0 GI ORANGE CONSTRUCTION FENCE 2. SEE OTHER FIGURES IN THE APPLICATION FOR - --' ,t ......-I : E ELECTRICAL(UNDERGROUND) RESERVOIR SITE PLAN AND DEVELOPMENT. z : L C c GAS ~ w••5 SIGN CH OVERHEAD POWER 3. CONTRACTOR WILL USE PARKING LOT FOR EQUIPMENT — ., -AU PETS MUST BC LEASHED" - — — - PROPERTY UNE STAGING AREA DURING PIPELINE CONSTRUCTION. _, ! TRAIL MARKERSS SANITARY SEWER CONSTRUCTION ANTICIPATED DURING WINTER. Kennedy/Jenks ConsultantsSO STORM DRAIN i Ni T TELEPHONE LAKE OSWEGO-TIGARD WATER PARTENERSHIP V w w�A�//w—WATER FINISHED WATER PIPELINE-LAND USE PERMIT QY SURVEYED EVERGREEN TREE LAKE OSWEGO,OREGON Y� il. WALUGA PARK-PROPOSED SITE PLAN, SURVEYED DECIDUOUS TREE GRADING PLAN,UTILITY PLAN, 0AND EROSION CONTROL PLAN 0 20 m K1J 1191016*20 GTI APPROXIMATE SCALE IN FEET FIGURE 4 EXHIBIT E-26 LU 12-0044 Co � ... EXISTING WATEN TANK ' NOTES 1. THERE IS NO PERMANENT GRADING ASSOCIATED WITH i I'''''' ;//„, \ - \ l �- 1ST OIA s - • THIS PIPELINE CONSTRUCTION.THE EXCAVATED TRENCH I` \` /. ,/ r� WILL BE RESTOREp TO PRE-CONSTRUCTION GRADES /�` \\ \���' _ ✓// �//� 2. SEE OTHER FIGURES IN THIS APPLICATION FOR -�, r/�/// / ////r' ` �C� yx•` _ � i/j�, ;t•: RESERVOIR SITE PLAN AND DEVELOPMENT. //" i �� ��\\ ! E �/ 3, SOIL STABILIZATION BLANKETS WILL BE PLACED ON THE //+, `� \,\4• •� I%�iJ qy,.„, - GROUND SURFACE AS SHOWN ON THIS FIGURE-THE / ry g2 'I \ I---"-. - \- // I \ I; BLANKETS WILLOVERLAPA MINIMUM OF8-INCHES AND BE !!/ j - ,o , ~\ / "' STAPLED AND BURIED INTO THE GROUND SURFACE AT if/ / \`\���,' /!/ 1 \\ - THE TOP OF THE SLOPE. 1 / l J ..> 4IVD , GRAVEL WILL BE PLACED ON THE EXISTING GROUND n///,2L- r//C ¢!#4,0 ; \ // / I - //y/ SURFACE AT THE ESTABLISHED CONSTRUCTION SITE r / I l i f ' + /1 1'// r !l, / ' . / / ENTRANCE/EXIT LOCATIONS AS SHOWN ON THIS FIGURE. /�i< < fj- / Amy �j/.i �� / - ys `r //// TURF REINFORCEMENT MATS 9:�i/�J j/� olti ♦+ry '"� f ///- FOR SOIL STABILIZATION. 5. EROSION CONTROL WILL BE PER CITY OF LAKE OSWEGO / / S" "S / i/ SEE NOTE 3. ENGINEERING E INSTALLATION STANDARD DETAILS FOR j V - ,,,�.,, } r elf. y•�'��`{�G / ,i J//y MATTING SLOPE INSTALLATION(D-1.05)AND i / r •� �T �1���.p�?'i / t ��(///_ r ✓ // / / CONSTRUCTION ENTRANCE(D-1-OB)- i//�,y"'� , A. -. ,_. i.9�a wI��I)41�Z�T� • / / �� / / ,� CONSTRUCTION `� \\ ♦ 1 y +•ryyTir' l \ \I /\ ' // ;78 ip ACCESS FROM SW \ \ 1/:", ' f / /I 1 I I \ / / / /f.SEENOTE4 �k, �� , / // C $ ' 'Arf wit' °° a` \\ ` 1�' 1 a 1\ s 1 ! / M ill Iti' }1 1 I / An 4' ¢ �� • aY/ A '� , j 1L20/16 II}11)t\\1/ \ \ \ l \ , - / ^1 " / I /i// I III III } / !j!!e �a 4 m pp 1 1} \I\1 \4\\ \ \ 1 l \ \ �/ / ''r"'JJJ���YYP�����•1 �1 rf,.r y na' /1 I 11111,-f j/ �ti T, /1 A 4 '_ ��ii V ItA\\\ A\ �- \ -A A �' m V /- / rrr+lr v,,l' // ", si r �°n•r / .. �gt !• ! y__ Jiff!it,4114\1ti�11; ‘, '�• / •r //tom I i / I �: SIGN �/ — 1 JJ/J I l t.. /i�i�� � A ,r — / s1n k'. ' //�� - /1r f wG,'y' /.r \ i // + °"�'/j// _ s. / / }I /&♦. 'ALL PETS AIL 21, Y //.�\ . % Y �T - P( 1 /i T % Irv • c re C v j : i ,., %.,,,,,,. ,At° J /, ' ,f'' '.- )1/f. . I 1 4."4 ' / 10 - y \ / '° \ a. /// // riJ / j� / ♦ • 1" 6 / ✓ / TRAM MARKER LEGEND J /i / / .�{, i ij ♦ n' / / .. / b PROPOSEOFINISHEDWATERPIPE !'ii/ .� (liarx l �� / /// ""t �'//// // / / / z O L7 G SEDIMENT FENCE ///--2 i /l•%,-,- 1 4 ✓�- • / '^ / /// ! // / /•1 //J 1 �$ / / WA, WORK AREA BOUNDARY /,_ J I� -,w',4' \ / - t: / r / ///'f« / / CY3/ stets- / _ f: .- / / / /,- c o 0 ORANGE CONSTRUCTION FENCE // 1 V j 1 1,•/ •+.-�r • - // / /v/ /// E ELECTRICAL(UNDERGROUND) - / �d // / —c G—GAS /' // / j z i/ ' / / /.1r / / // i�i,// ✓ Kennedy/Jenks Consultants _ y - / / / LAKE OSYJEGO-TIGARD WATER PARTENERSHIP o� OVERHEAD PO4YER r/ I / !r+- / 1 �� �/ // f�: / /j / ss SANITARY SEWER - /%I. 1 I I - / r 1 r/ ., r//,! �/ — ',� / / //// / / FINISHED WATER PIPELINE-LAND USE PERMIT PROPERTY LINE ,./. / J� / / i/ ! 1 "/ f / so STORM DRAM - o / / / r / / / LAKE OSWEGO,OREGON T TELEPHONE ..o / /:� ! I WALUGA PARK-PROPOSED SITE PLAN, w w—WATER / /� ��� _ I- �/ _ �� // / I / / /� — — /�/i / ,,./� // / GRADING PLAN,UTILITY PLAN, SURVEYED EVERGREEN TREE /i �" //i /// j I /// / SURVEYED DECIDUOUS TREE '/ r I �° '////// / , /loll f I I '. �/ / AND EROSION CONTROL PLAN O �- $ _ _r /// / ( I /!/ ( 1 •} i / o m nI KIJ 1191016'20 APPROXIMATE SCALE IN FEET FIGURE 3 A I B 1 c I o I E I F h C I H I I ! - I K I L I M I N I 0 I P f .»LL6,,-� I -- _ =g.iA PA `7 RESTORATION LEGEND 10 ■ oRI RI `7 ~ RESTORATION 5,53 L 0 'i' S AHiaAnv Eicnlx-SEED RATE RnrAL p 1.s 9s.PER loco so.FT,— n. ^•.$ 9 4,V 1 _.:�•,1O�p�Mt 'I 'I �1-• 0••••••• { .,- - RESTORATION DEED MI%'B'-(TOTAL 2,506 SF) 9 �, r.n II ,0 N �►-N•�• . '+ � � M -SEED RATE 1.5 LB5.PER 1000 SO-FT- - SUNMILRH'NATIVE UPLANDS UL' '.ti� +`� GENERAL NOTES: a 1 I k 7" '.. $+ J I I Lt •3 ". L I.NEW PLANTINGS NOT MI./ZING AFULLY AUTOMATIC IRRIGATION SYSTEM SHALL BE HAND WATERED g i�`4 ' I o ASV/� LW•N.:44 uNF1L ESTABLISHED THROUGH WARRANTY PERIOD. — j W ►`' •••i•':" PLAITING WIMH VARIES Des To 2.PROTECT AND PRESERVE All EXISTING IRRIGATION SYSTEMS.INTEGRATE ALL NEW LAN0SCAPI NG I „ ' ....;. VARUNCE N wcpnens OF THAT FALLS WITHIN EXISTING-IRRIGATION ZONES. } i'••�:.Nf.:':'«'• sLNIANT AND ERGEI0.NGONTROL BURO y- er n\ •. «, ••.•;• {LA SEE PLAN Ns OTHER IS FOR O'000E o 3.CONTRACTOR SHALL PROVIDE TOPSOIL,5o1L AMENDMENTS AND MULCH AS SPECIFIED TOPSOIL WILL (� 1 BEE PLANS Its OTHERS POq FINAL 7 I! w.�•::•:��.• T/RILADGNMENT. CONSIST OF FERTILE GROWING MEDIUM VOID OE WEEDS,ROOTS,ROCKS,CONSTRUCTION DEBRIS,ETC. I T - d 4.ALL PLANTS SHALL RE INSTALLED IN ACCORDANCE WITH THE DETAILS AND SPECIFICATIONS PROVIDED 7 Mm '— .' :.'..«.. H1 AU PART OF THE CONSTRUCTION pOCUMENF PACKAGE . � PIPe41701 NT- •`•:;I'•,• 5 5.GUAM T1ES ARE LISTED FOR THE CONTRACTOR'S CONVENIENCE ONLY,ALL COUNTS MUST BE VERIFIED �' j7j4\"Y„ �•C� . ICE CIWL AE•':' {/ `1 I O' �F'.•.'I4,.,' AY THE CONTRACTOR IN THE CASE OF A DISCREPANCY BETWEEN THE LEGEND AND THE PLAN,PLANTS — ;� .,�` �..s INDICATED ON THE PLAN SHALL S UP ERCEDE QUANTITIES LISTED IN THE LEGEND. - O .��.��(p(ppp.. 5.ALL AREAS DESIGNATED FOR PLANTING ARE TO DE CLEARED OF INVASIVE PLANT SPECIES PRIOR TO 6 y°A\ .:q�•' PLANTING. • L - - V3 t , amp . •. > a S F ••.••, ` - � a 1<'T l - CONSTRUCTION NgHe EEBTWGP9RN III III, II, y - • •(, '. -S!� IIPAR ALL AREAS GP t`��Iw,�j� h �e F� a 1 'I�••'`L�i J TFIAPOAN[i G q GRAVES.ORM �.�AQ — +a r 5 n�i•a ' ,x e0STrI ruIE 7 'SY— IMPACTED �a `� ° r,,,,, \ rerGRArELTawY i�i�Nrh•,`N �c'L, j sEOIHenT �/'a s, ,a,,, �' /' 1 \`� TORFR,LI,e _�`_ :` � o 4°'.. ,� FBr.NG� -'^ �' y,>-'. `" $ y� . .�' � 11 f' ' `` •�4G��Sh••••oi y,� �' -r__ ••"i•�s o-*�8 qs w• `w s h 1,1.. 'a,`� '^F{ :', E _ ••a•~•�••• r� • ti i i"-•'�• `e••a!al.�•i!tiiiS!ili�i aya�•� e�*s •.- 1.« — i 1 _-' - '•!` - -•V•� •?�h°• =��•. ••�•S••!�!i•i,E•I i a • r w��•� 'g3" •v19 -a�T OMVECTRNLY08E 1� -_'^Fs•.. —0�.y`iY�•�� IC w RE-LON6Ml1LiEp- "� •� sip 1�14NGRElE Y 1G514 'WE OF 1NIA SEE PLANE eY -- r'1 f L I � �' � ors �r roa {. - .. I nEP Au AREAS �n -y� IS)ACPA H -- y . PLANTING 1� N 1 weoLINE I52INCNEE H REv eesc 5151V 1 ry Aw G157p — ' 01,11.1... GA LINKS sb RED D..RYPN...e O m I en�kBeCDns Consultants 065ICN 0.-P, q H Lake Oswego•Tigard PLANTING PLAN tv EGcr:p:oI 3RAI5M: ov a` Water Partnership FIGURE S A r EcCSIELI•NEo. s, •�R ! p WALUGA PARK TO WR2 �, shafig wafer O mrhP9 somrPePiNH APPRwEo.FM p0T AR L„•",,,,,,,,•,,,,,,N, I B I C I 0 I E 1 F I G I H I I I J I K I L I M I N I 0 I P I 50 Lake Oswego Waluga Reservoir #2 and Finished Water Pipeline Revised Land Use Application ri.vt-..... ....______,,LAKII-Lr13,0 417-'intilirAtittl-61711-wildi • ter•1 • w I - III. • 1.- r` , r.,. 1r al ' , A . alik • --I NM - , I Ala .v. ... limp§ • lielaimil - -• ' 8j1 : - al • _LAWN City of Lake Oswego June 12, 2013 0 Lake Oswego-Tigard Water Partnership slwring wdrer.wr!wrtirgcommunxrel EXHIBIT F-1 LU 12-0044 52 Lake Oswego Waluga Reservoir 2 and Finished Water Pipeline Revised Land Use Application Prepared for City of Lake Oswego June 12, 2013 Prepared by Eric Day, Senior Planner, City of Lake Oswego ,, Lake Oswego•Tigard Water Partnership shoring water•connecting communities 53 Lake Oswego 2 Waluga Reservoir 2--Land Use Application CONTACT LIST APPLICANT OWNER City of Lake Oswego City of Lake Oswego PO Box 369 PO Box 369 Lake Oswego,OR 97034 Lake Oswego, OR 97034 503.534.4238 503.697.6588 Contact—Eric Day Contact—Joel Komarek, P.E SUBCONTRACTORS Brown and Caldwell 6500 SW Macadam Ave., Suite 200 Portland,OR 97239 503.820.5638 Contact—Jon Holland, PE Black&Veatch 5885 Meadows Road,Suite 700 Lake Oswego, OR 97035 503.443.4467 Contact--Sean Gods, PE Kennnedy Jenks 200 SW Market St., Suite 500 Portland, OR 97201 503.423.4059 Contact—Brad Moore, P.E. E2 Land Use Planning Services, LLC Lucky Lager Building, Suite 201 215 W 4th Street Vancouver,WA 98660 360.750.0038 Contact—Eric Eisemann, JD 0 Lake Oswego•Tigard Water Partnership sharing water•connecting cnmmunirres 54 Lake Oswego Waluga Reservoir 2-Revised 3 TABLE OF CONTENTS CONTACT LIST 2 PROPOSAL 5 I. LAND USE REVIEW 9 Land Use Applications Requested 9 II. OVERVIEW 9 Water Reservoir 9 Finished Water Pipeline 10 III. CENTRAL ISSUES 10 Major Project Components 10 IV. REVIEW CRITERIA 11 Lake Oswego Community Development Code(LOC) 11 Residential Districts(LOC 50.02.001) 11 Dimensional Table(LOC 50.04.001).. 12 Special Purpose Districts(LOC 50.02.003) 14 Sensitive Lands Overlay District(LOC 50.05.010) 15 Building Design(LOC 50.06,001) 22 Parking(LOC 50.06.002) 25 Circulation and Connectivity(LOC 50.06.003) 25 Minor Variance LOC 50.02.002 28 Site Design(CDC 50.06,004) 32 Park and Open Space Contributions(LOC 50.06.005) 37 Geologic Hazards and Drainage(LOC 50.06.006) 39 Utilities(LOC 50.06,008) 45 Conditional Use Permits(LOC 50.07,005) 46 LOC 50.03.003.Use Specific Standards 49 Exempt Development(LOC 50.07.003,12.a.iii) 50 Additional Submission Standards(LOC 50.07.004.8.c) 50 Tree Removal(LOC 55.02) 51 Tree Protection(LOC 55.08) 54 V. LAKE OSWEGO COMPREHENSIVE PLAN POLICIES 55 Goal 2:Land Use Planning Policies 56 Goal 5: Open Spaces,Historic and Natural Areas 58 Goal 6:Air,Water,and Land Resources Quality 62 Goal 7:Areas Subject to Natural Disasters and Hazards 63 Goal 8:Parks and Recreation 64 Goal 10:Housing 64 Goal 11:Public Facilities and Services 66 Goal 12:Transportation 68 Goal 13:Energy Conservation 70 CONCLUSION 71 Lake Oswego•Tigard Water Partnership sharing water•connecting mrnmunfties 55 Lake Oswego 4 Revised Waluga Reservoir 2—Land Use Application APPLICATION REPORTS REFERENCED Tree Inventory and Tree Protection Plan—Section 5 Resource Conservation Protection Area Plan—Section 6 Delineation and Mitigation Report—Section 7 Erosion Control Figures—Section 8 Construction Management Plan—Section 9 Traffic Control Strategy Memorandum—Section 10 Pedestrian and Site Circulation Plan—Section 11 Geotechnical Report—Section 12 Stormwater and Drainage Report—Section 13 Grading and Drainage Plan—Section 14 Good Neighbor Plan—Section 16 Figures—Section 17 Lake Oswego•Tigard Water partnership sharing water•connecting communities 56 5 PROPOSAL The City of Lake Oswego proposes to construct a second water reservoir (Waluga Reservoir 2,or WR.2)with a 3.5 million gallon water storage capacity on tax lot 1000 of tax map 21E 7AD (See Section 17,Site Plan) and extend the Lake Oswego finished water pipeline(P P) through East Waluga Park to the proposed reservoir. (Lake Oswego issued a final order approving the downstream portion of the FWP in 2011,see LU 11-0047.) Project Purpose and Background The applicant is the City of Lake Oswego (City) acting as the Managing Agency for the Lake Oswego-Tigard Water Partnership (Partnership). The cities of Lake Oswego and Tigard formed the Partnership in 2008 to develop and deliver a reliable drinking water supply for the two cities. The WR2 is a critical component of the Partnership's water treatment and delivery system,providing needed storage for Lake Oswego and Tigard on a daily basis. Lake Oswego holds water rights on the Clackamas River and has relied on that source as its primary water supply for the past 45 years.Tigard receives surplus Clackamas River water from Lake Oswego and water from Portland and Beaverton.The capacity of the Partnership supply system will be 38 million gallons per day (mgd) following completion of this project.This capacity will be available to both Lake Oswego and Tigard in 2015. The cities of Gladstone and West Linn issued final orders approving the necessary land use permits for the project components within their respective jurisdictions. The main elements of the proposed water supply system include: w Intake/Raw Water Pump Station(RIPS) on the Clackamas River; • Raw Water Pipeline (RWP) from the RIPS to the Lake Oswego Water Treatment Plant(WTP); • Expansion of the existing WTP; • Finished Water Pipeline (FWP) from the WTP to Waluga Reservoir No. 2; • Waluga Reservoir No. 2 (WR2); (the subject of this application) and ■ Bonita Pump Station (BPS) to deliver water into Tigard's distribution system. trioLake Oswego•Tigard Water Partnership sharing water connecting communities 57 Lake Oswego g Revised Waluga Reservoir 2-Land Use Application ni. RECOMMENDED ALIGNMENT 1� RAW NTREATF11V.ATERPIPELINE 41101 INI4NFO RRFATE_ WATFR FIRM INE � 264 kCR,ZONTALDRECTOM.DRILLING IIOEM /1 PARK u+ DOMAN Iran n' Lake Oswego Tigard ,} Water Partner5liip Figure 1.1:Lake Oswego-Tigard Water Supply Partnership Overview Site Design Process: The applicant has worked with the surrounding neighborhood associations,nearby neighbors and other stakeholders since July,2010. Initially,the reservoir was proposed to be 4.5 MG, 192 feet in diameter and 40 feet tall. When approached by City representatives about plans to build a new reservoir on City property near the existing Waluga reservoir,many nearby neighbors expressed concern. More than twenty-five neighbors attended the first meeting in July,2010; discussions included visual impact,reservoir safety,and construction impacts on Parkhill Street.Another meeting occurred in early September on Parkhill Street. The project team strung balloons to approximate the location of the proposed reservoir to help neighbors visualize the new facility.Feedback was mixed with concerns remaining about the visual impact of the facility, safety,construction disruption and street safety. Since then, five meetings have been held with neighbors to discuss how to address concerns ranging from safety,to reservoir visibility,to construction impacts. Through these meetings,a Good Neighbor Plan (GNP) was drafted. The GNP specifies actions and commitments that will help ensure the new reservoir and associated pipeline will be designed,built,and operated in a neighbor- friendly way. Partnership Oversight Committee and Lake Oswego City Council Review the Issues In.October 2012,nearby residents wrote a letter to the Lake Oswego City Council in October requesting consideration of the neighbors'issues. In response, the Oversight Committee and the Lake Oswego City Council embarked on a review of options for the WR2. Ultimately, City Council, in consultation with nearby neighbors, selected an option that was actually 10 feet taller,but narrower in diameter than initially recommended in 2011,providing the ability for greater setbacks tiro Lake Oswego •Tigard Water Partnership sharing water•connecting communes 58 7 from the closest homes. The new reservoir is proposed to be 146 feet from the back property line of homes on Parkhill Street and 35 feet 10 inches from the nearest residential property line on the west. The nearest home will be more than 150 feet from the tank wall. Because the City Partnership will retain substantial amount of mature buffering vegetation and will plant new native vegetation in the buffer areas,the face of the tank will not be visible from most public vantage points. The applicant conducted the required neighborhood meeting (LOC 50.07.003.f)in June 2012. During the meeting a number of new attendees raised concerns about whether the project will be compatible with the neighborhood. Specific concerns relating to land use approval criteria included whether the project might adversely impact nearby residences,whether setbacks are adequate, site fencing,building height, construction impacts,and general neighborhood safety.Attendees also raised non-land use related concerns, such as,whether only Tigard will use this water, decommissioning the 10d' Street facility as an alternative to this reservoir, overall project need, and the general communication process, that are beyond the scope of this application and the reviewer's authority. Additional information about the neighborhood process can be found in Section 16 of this application (Neighborhood Coordination). In response to neighborhood concerns and consistent with City code,the WR2 will be painted green to blend into the forested area. The applicant will plant native vegetation to restore the disturbed areas to current or better condition. Over 50 percent of the site will be set aside as an RCPA. Gated entryways will limit vehicular access into the site; thereby,protecting the quiet character of the area. Maintenance crews will visit the site one or two times a week. The site will include an on-site private pedestrian accessway which will facilitate routine maintenance activity. The operation of the facilities will generate no discernible noise at the property line; thereby, helping to maintain the quiet character of the residential neighborhood. The applicant has designed the facility to the fullest extent possible to fully comply with the applicable LOC approval criteria and construction standards.The applicant is applying for a minor variance to the driveway grade, supported by the Lake Oswego Fire Department. Waluga Reservoir 2(WR2) The site is physically capable of accommodating the proposed use.WR1 is a permitted reservoir that currently exists on site. The WR2 is designed with a smaller footprint but is taller than WR1. The applicant will construct WR2 to the northeast of the existing WR1 on City-owned property. WR1 currently provides 4.0 million gallons of potable water storage serving the Waluga Pressure Zone in the City's drinking water system.WR2 will be 49 feet tall and 133.25 feet in diameter. Lake Oswego is building WR2 to increase the overall storage capacity of the Lake Oswego drinking water system by 3.5 million gallons to assist in meeting the long-term water supply demands of Lake Oswego (2.0 MG) and Tigard (1.5MG). See figures in Section 17 of this application for the proposed layout of WR2 and existing WR1. The taller height of WR2 relative to WR1 will eliminate a long-standing deficiency in water pressure service to nearby residents' and businesses. The general layout of the WR2 structure is shown in Section 17 of this application. The site will have the following access points and pathways: ■ The main,paved,gated access for operations and maintenance personnel will be off Carman Drive. A 20-foot-wide gate and access road will lead to WR2. ■ An onsite 10-foot-wide maintenance walkway from WR2 will lead to WR1. Lake Oswego•Tigard Water Partnership r sharing cute connecting commuties 59 Lake Oswego 8 Revised Waluga Reservoir 2-Land Use Application ■ The existing access to WR1 from Parkhill Street will be maintained.A new 12-foot bar gate will be installed to replace the existing chain gate. See Section 17 for gate details. Project yard piping will be installed underground. Pipe appurtenances and vault access hatches will be visible throughout the site;perimeter screening and plantings will minimize visibility of these facilities from off-site.Additionally,a reservoir overflow pond will be located on the site and will provide detention of any overflow from WR2. See Section 17 of this land use application for figures showing these project components. The site has a Resource Conservation (RC) designation. Because construction activity will result in the loss of trees 5 inches and greater,as required by code,Lake Oswego will designate a Resource Conservation Protection Area (RCPA) on a portion of the site.This designated area will meet the RCPA criteria found in the Lake Oswego Development Code (Section 6,Resource Conservation Protection Area Report). Finished Water Pipeline(FWP) The City will construct a 24-inch pipeline through East Waluga Park to supply water to the proposed WR2.The pipeline alignment through East Waluga Park will be approximately 1,200 feet long. This new pipeline alignment will enter East Waluga Park at the Quarry Road parking lot entrance,will traverse west through the parking lot,will follow an established trail up into the historic quarry, and will then traverse northwest through lightly wooded forest to the WR2 location. See Section 17 of this application for figures that show the pipeline alignment through East Waluga Park. The FWP will pass through an RC district in East Waluga Park. The designers selected the pipeline route to avoid removal of any trees 5 inches or larger in diameter. (See Section 5,Tree Inventory and Tree Protection Plan.) Lake Oswego Code does not require the designation of an RCPA in Waluga Park. The pipeline will lay more than 3 feet below paved and unpaved areas. Therefore,the FWP will not be visible to the public following construction.The only visible part of the project will be the intermittent manhole lids and vault covers (similar to those required for sanitary or storm utilities) located over pipeline appurtenances along the alignment. One of the benefits associated with this application is that the applicant proposes to construct parking lot improvements in East Waluga Park that will improve drainage under the paved surface. The Lake Oswego Parks Department approached the applicant and asked whether the applicant would make these drainage improvements to the undersurface of the parking lot. After some initial cost analysis, the applicant determined could make the requested improvements could be made for a small cost (approximately$40,000 including design) and that this up-front outlay would generate greater savings to the City because resolving the drainage issues will result in less need to repair the parking lot in the future. Location The water reservoir site is located at 4800 Carman Drive on a City of Lake Oswego-owned parcel that was consolidated from parcels 22E07AD00700,22E07AD00900 and 22E07AD01000 in 2010; T2S,R1E, Section 7.The proposed FWP is located.in East Waluga Park in Lake Oswego. 0 Lake Oswego•Tigard Water Partnership sharing water•connecting communiries 60 9 Comprehensive Plan Designation and Zoning East Waluga Park has a Park and Natural Areas (PNA) Comprehensive Plan designation and is zoned Park. The reservoir site has a Low Density Residential Comprehensive Plan designation and is zoned R-7.5. Neighborhood Associations The site is contained within both Lake Forest and Waluga neighborhoods. I. LAND USE REVIEW Land Use Applications Requested The primary land use application is a Conditional Use Permit (CUP) for the construction of the WR2. The proposal also includes land use applications to designate a RCPA on the Carman Drive reservoir site and Design Review for the reservoir structure. The applicant is requesting one minor variance relating to driveway slope. The Lake Oswego Planning Department conducted a pre-application conference for the proposal on July 14,2011. See Section 3,Pre-application report. Thereafter, the applicant met several times with Lake Oswego planning staff prior to submitting this application. The application includes all applicable review fees. The City of Lake Oswego classifies the FWP through the RC district in East Waluga Park as exempt development. Consistent with its October 30,2012 letter, staff concluded that the FWP is still required to comply with the criteria listed in LOC 50.07.004.8.c, normally a ministerial review. Therefore,where appropriate,the application narrative will address the FWP as well as the WR2. II. OVERVIEW This applicant contains two components, the FWP through East Waluga Park and the WR2 on the site of the present day water reservoir. Water Reservoir The City of Lake Oswego owns the reservoir site. The City approved consolidation of three parcels (22E07AD00700,22E07AD00900 and 22E07AD01000) into one 235,666 square foot parcel.The site includes a portion of East Waluga Park the City approved through a lot line adjustment (LU10- 0005). The applicant proposes to locate a 3.5 million gallon water reservoir,access road and associated piping on the property.The water tank will be 49 feet in height,lower than the 50-foot height limit in the residential zone,and will have a diameter of with a diameter of 133.25 feet. By comparison, the current water reservoir(WR1) on the site is a 4 MG tank that is 20.5 feet by 192 feet. WR2,at 49 feet,will more effectively serve low pressure areas in the Lake Forest and Waluga neighborhoods. The proposed size of the tank was tentatively agreed to in a City Council meeting by 0 Lake Oswego•Tigard Water Partnership sharing water•connecting commonitles 61 Lake Oswego 10 Revised Waluga Reservoir 2-Land Use Application the Council and members of the Waluga Neighborhood Association in February 2011. The minutes of this meeting are included in Section 20,Correspondence. Finished Water Pipeline The FWP will be located in East Waluga Park (refer to figures in Section 18 for the proposed pipeline alignment). The pipe will be 24 inches in diameter. The applicant will follow all construction-related requirements in the RC and Resource Protection (RP) designated areas. (See Section 9A,Construction Management Plan, for a discussion of proposed construction related measures. III. CENTRAL ISSUES This application demonstrates that the proposed WR2,access road,and FWP proposals satisfy the applicable land use and development review requirements of the Lake Oswego Community Development Code (LOC). Major Project Components 1. Sensitive Lands-The project alignment traverses an RC overlay designation. The applicant proposes to mitigate impacts consistent with the LOC. (See Section 7,the delineation and mitigation plan.) Earlier,the Lake Oswego City Council previously approved a legislative amendment(LU# 11-0018) making underground water pipelines (trunklines) an allowed use within any Lake Oswego zoning district. The entire WR2 site is 235,666 sq. ft. in area;the applicant will designate 118,315 sq. ft. as RCPA. Therefore, the proposed RCPA will cover 50.2 percent of the WR2 site. (See Section 6, Resource Conservation Protection Report.) The FWP does not require an easement because the alignment is on City-owned property. ■ East Waluga Park-GIS data indicates that the site has RP and RC district overlays. The design team carefully selected the alignment of the proposed FWP to avoid removal of trees 5 inches DBH or greater. Because construction activity will not remove trees larger than 5 inches DBH,the Lake Oswego Community Development Code does not require the applicant to provide an RCPA designation. The City completed an RC delineation for the site in 2010. (See Section 20,Correspondence.) ■ Carman Drive Parcel(WR2)-This property has a RC overlay throughout. Because the construction of WR2 and access road requires the removal of many trees greater than 5inches DBH, the applicant proposes to establish an RCPA designation. (See Section 6, RCPA Report). 2. Community Outreach-The applicant participated in several meetings with the Waluga and Lake Forest neighborhoods and nearby residents relating to the WR2 project.As a result of these meetings, the applicant developed,in collaboration with these groups,a Good Neighbor Plan that describes the City's commitments in design and construction of the WR2 and which addresses neighbor concerns. The applicant conducted the required neighborhood land use i Lake Oswego•Tigard Water Partnership sharing water•connecting communities 62 11 meeting on June 7,2012.The project outreach team continues to hold meetings and provide information and public outreach to affected parties,with the most recent meeting held on May 28,2013. See Section 16 for documentation of the required land use meeting. 3. Conditional Use Permit—The Lake Oswego Community Development Code (LOC) classifies construction of a Major Public Facility (WR2) in a residential zone (R-7.5) as a conditional use. The proposed use meets all applicable LOC criteria;however,the applicant is requesting one minor variance to the driveway grade standards, from 15 percent to 17 percent for the overall driveway grade and from 5 percent to 6 percent for the driveway approach grade. The Lake Oswego Fire Department supports both changes. Additionally, the applicant has shown that the proposed use fits well within the character of its surroundings,a forested lot with an existing water reservoir on the site. The City's Water Master Plan calls for the construction of an additional water reservoir on this site. This proposal is the fulfillment of this plan endorsed by the City Council. IV. REVIEW CRITERIA Lake Oswego Community Development Code (LOC) RESIDENTIAL DISTRICTS (LOC 50.02.001) RESIDENTIAL LOW-DENSITY ZONES a. Districts The residential-low density zone districts are R-15, R-10, and R-7.5. b. Purpose. To provide lands for single-family residential development with densities ranging from two to five dwelling units per gross acre. Applicant Response: The proposed WR2 is situated on a parcel that is zoned R-7.5. Lake Oswego•Tigard Water Partnership sharing water•connecting communities 63 Lake Oswego 12 Revised Waluga Reservoir 2-Land Use Application DIMENSIONAL TABLE (LOC 50.04.001) RESIDENTIAL LOW-DENSITY ZONES a. Dimensional Standards Development in the R-7.5, R-10, and R-15 zones shall conform to the dimensional standards in Table 50.04.001-1 except as modified below. Table IV.1 • 50.04.001-1:Dimensional Standards R-7.5 Standard Proposed Density Minimum 80%of max N/A Minimum lot dimensions [3] Area (sq. ft.) 7,500 235,666 S.F. Width (ft.) 50 470 [1] Depth (ft.) 100 720 [1] Yard setbacks -Primary Structure[4] Front(ft.) 25 356 feet Side Adjacent to Street(ft.) NA Side Lot> 18 feet 10 32.7 [2] Real 30 146 feet Maximum base height(ft.]-Primary structure Lot with Sloping Topography 32 Sloped Lot [3] 35 or 50 feet for a public 49 feet facility 1. Width and depth at the widest point; the width at the narrowest point is 360 feet and the length at the shortest point is 550 feet. 2. The 32.7 side yard setback is derived by taking the proposed 49 foot reservoir and dividing it by the required 2/3. 3. Figure 50.04.001.A, Height adjustment for sloping topography is a slightly different way of measuring height than the example provided by the Lake Oswego Planning and Building staff. Our proposal meets either metric for measuring height. LOC 50.03.003.b.iv provides that a conditional use may have a height up to a maximum of 50 feet. 0 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 64 13 4. The WR2 will be more than 150 feet from the nearest home. Applicant Response: The proposal meets all dimensional standards for the R-7.5 zone as outlined in Table IV-I. Figure 50.04.001-A:Height Adjustment for Sloping Topography exception to Base heightLe, zone A base height dependent f�l 4-ft. adjustment to base height for topography • 36, 384 360 360 ass SO' EXISTING `4FN zse 15Y GH:11 NJ;tFFSF7 � _111 --- 332 346 3,6 344 544 3�a r� 3a 336 336 332 . 332 376 376 724 r 324 327 v - J 320 316 316 1 312-- 1 1 312 Mg�_ FPs I:HED� .N8 CRAQC —— — T 304 304 See - ——— ---i�1 .-. 3,° ./ 266 29? — rXTs1IN GROUND 206 -- as 204 +W It00 2+W 3+9P 234 SECTICM I 9/5/12 SECTION THROUCH WR2 I PROFILE: —0+25-3+25 Horiz. Scale; I"=30' Vert. Scale: l"=10' f. Lot Coverage— Standards i. Maximum Lot Coverage—Maximum lot coverage for the R-7.5 is 25 percent if the height of the structure is greater than 32 feet. Applicant Response: 4 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 65 Lake Oswego 14 Revised Waluga Reservoir 2-Land Use Application The applicant is proposing a structure that is 49 feet,less than the 50-foot maximum allowed height allowed for a conditional use in a residential zone.The lot coverage of 18.5 percent is under the maximum allowed of 25 percent. SPECIAL PURPOSE DISTRICTS (LOC 50.02.003) PARK AND NATURAL AREA ZONE a. Purpose The purposes of the Park and Natural Area (PNA) zone are to: i. Protect, preserve, conserve and enhance natural areas, greenways and parks; ii. Permit a wide range of passive and active recreational uses, and accessory uses, on property for the future use and enjoyment of the City and its residents; iii. Implement Statewide Planning Goal 8, Recreational Needs; and iv. Establish a master plan process for park planning and development. b. Master Plans A master plan, including master plan modifications, may be used by the park/natural area provider to plan for uses on PNA-zoned land, to provide for a coordinated plan that considers community needs, infrastructure and land use. PNA master plans are created pursuant to LOC 50.07.004.6, Parks and Natural Areas Master Plan. A master plan is a plan that is... c. Site Development Limitations i. Setbacks The following setbacks shall apply: (1) Except as provided below, the setback of any respective yard(front, side, street side, or rear) shall be equal to the minimum required yard for the property adjacent to the respective yard's lot line. (2) In cases where PNA-zoned property is adjacent to properties with two or more different yard requirements, the required setback for the yard adjacent to the properties with the two or more different yard requirements shall be equal to the average of the minimum yards required for the two or more abutting properties. (3} Setback requirements for any yard may be modified by the master plan. ii. Lot Coverage The maximum lot coverage shall not exceed 35%or as established by the master plan. iii. Height of Structure Except as otherwise permitted by LOC 50.04.003.4, General Exception to Structure Height Limitations, the maximum height of any portion of a structure shall be the greater of: (1) 35 ft., or (2) A height as determined by the ratio of one ft. in height for every three and one-half ft of distance from the portion of the structure to the lot line of the nearest residentially zoned property, to a maximum height of 75 ft. [Height= Setback from Residential Zone/3.5]. Applicant Response: 0 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 66 15 A segment of the FWP lies within the PNA Zone. Water transmission pipelines are an allowed use within all zones in Lake Oswego. Because the proposal is for a buried pipeline the special limitations of this section do not apply. The applicant is not submitting a master plan for the development of the site. SENSITIVE LANDS OVERLAY DISTRICT(LOC 50.05.010) 1. OVERVIEW a. Purpose- LOC 50.05.010 creates the Resource Protection (RP) and Resource Conservation (RC) district overlay districts to: i. Protect wildlife habitat; ii. Protect and improve water quality; iii. Control and prevent water pollution for the protection of public health and safety; iv. Comply with federal laws including the Clean Water Act and the Endangered Species Act; v Comply with State Land Use Goal 5; and vi. Comply with Metro's Urban Growth Management Functional Plan. b. Comprehensive Plan and Zoning Map The overlay districts shall be designated on the Comprehensive Plan Map and Zoning Map. The purpose of these maps is to give a general overview as to the location of the districts and is not intended to show the precise location of the district boundaries. c. Sensitive Land Atlas The boundaries of the districts shall be shown on individual property maps at a scale of 1:300 in the Sensitive Lands(SL)Atlas. The SL Atlas is intended to govern the applicability of this section pursuant to LOC 50.05.010.2. The SL Atlas shall be adopted as part of the City's Comprehensive Plan and Zoning Maps. Applicant Response: The City's Natural Resources Inventory Map identifies a Tree Grove on a portion of the site and adjacent sites (Fig. 1). Therefore, delineation of the RC resource on the site and determination of the RC Protection Area is required prior to development. The East Waluga Park site southeast of the development area will not require an RCPA because no trees greater than 5 inches will be removed. The RCPA designation in this report only applies to the reservoir site. 2. APPLICABILITY This section applies to all lands designated as RP or RC on the Sensitive Lands Map and Atlas. a. Sensitive Lands Development Review Required i. Development within: (1) The RP district, as defined in LOC 50.05.010.6.b; (2) The RC district or within five ft. of the RC district boundary; or Lake Oswego•Tigard Water Partnership shoring water-connecting communities 67 Lake Oswego 16 Revised Waluga Reservoir 2-Land Use Application (3) The construction setbacks established in LOC 50.05.010.6.c.ii(1)(e) (as shown on maps in the Sensitive Lands Atlas);shall be subject to the standards and criteria identified in LOC 50.07.004.8.c, Environmental Review. ii. Land divisions, lot line adjustments, mitigation proposals, and adjustments of a district boundary shall be subject to the standards and criteria identified in LOC 50.07.004.8.c, Environmental Review. iii. To the degree that any requirement of this section conflicts with a requirement of the underlying zone, this section shall prevail. Applicant Response: The WR2 portion of this project is within an RC district; the applicable sections of LOC 50.05 pertain to the proposal. The FWP portion of the proposal is within an RC and RP district and the applicable portions of LOC 50.05 pertain to this proposal. 4. GENERALLY APPLICABLE STANDARDS FOR RP AND RC a. Rebuilding Nonconforming Single-Family or Duplex Dwelling Located in RP or RC District or Construction Setback Applicant Response: The applicant is not proposing to rebuild a non-conforming structure in the overall district. b. Modifications to Dimensional Standards and Setbacks of the Underlying Zone Applicant Response: Applicant is not proposing modifications to dimensional standards or setbacks of the underlying zone. c. Density Transfer Lot density transfer shall be permitted on residentially zoned lands subject to an RC or RP district pursuant to this section. Applicant Response: Applicant is not requesting a density transfer as a part of this application. d. Construction Standards An owner shall submit a construction plan and narrative to the City Manager prior to any grading, clearing, or construction on a development site which contains an RP or RC district. The construction plan and narrative shall demonstrate that the following standards will be met: i. RC protection areas or RC districts where no protection areas have been approved and RP districts shall be protected during construction with either: (1) A minimum six-ft. tall chain link fencing secured with a minimum of six-ft tall steel posts. The fencing shall be in place and maintained for the duration of construction. In addition, temporary signage shall be placed on the fencing which shall clearly identify the resource district and shall state the penalty for violations of this section: or 1, Lake Oswego•Tigard Water Partnership sharing water•connecting communities 68 17 (2) Such alternative method to subsection 4.d.i(1) of this section that is approved by the City Manager to demarcate and protect the RCPA or RC/RP district from the adverse effects of construction activity upon the resources. ii. RC protection boundaries and RP district boundaries, as applicable, shall be located and staked by a qualified professional prior to placement of fencing and other protective measures. iii. Hazardous Materials. The site shall be inventoried for hazardous materials, debris and noxious materials, and these materials shall be removed prior to the development of the site. iv. No construction, demolition, grading, or site clearing shall begin until after protective measures, signs, and erosion control measures are in place and have been inspected and approved by the City Manager and all applicable permits have been issued. Fencing and other protective measures shall not be removed, even temporarily, without the permission of the City Manager. v. No stockpiling of fill materials, or parking or storage of construction equipment shall be allowed within a resource district. vi. When transportation facilities, pathways, utilities, or structures are approved within a delineated RP district, they shall be constructed in such a way that a minimum of excavation is required and so that no permanent draining or filling of a stream corridor or wetland will occur. vii. Surface runoff and other water sources supplying hydrology to an RP district shall be designed and maintained so as not to adversely impact the functions and values of the resource. viii. Any additional construction requirements imposed as conditions of approval or which may be required by the Development Standards, the Lake Oswego Building Code (LOC Chapter 45) or the Erosion Control Code (LOC Chapter 52). Applicant Response: The application includes a Construction Management Plan,Section(9A),which describes site fencing,protection of RC and RP boundaries,erosion control measures,stockpiling and handling of hazardous materials consistent with this section. e. Mitigation; Purpose Mitigation is a way of repairing or compensating for adverse impacts to the functions and values of a natural resource caused by a development. Mitigation may consist of resource area creation, restoration, or enhancement. Some examples of mitigation actions are construction of new wetlands to replace an existing wetland that has been filled, replanting trees, and restoring stream side vegetation where it is disturbed. This subsection 4.e through LOC 50.05.010,4.g recognize that true replacement of mature or complex natural resource systems is difficult and can take many years. Mitigation is discouraged by first requiring that avoidance of development siting within the resource be explored. Then, if that is not possible, actions should be taken to minimize damage to the resource. Mitigation ratios are established according to the type of mitigation proposed and the value of the resource. Maintenance and monitoring of the mitigation measures are also required. Applicant Response: Lake Oswego •Tigard Water Partnership sharing wafer•connecting communities 69 Lake Oswego 18 Revised Waluga Reservoir 2-Land Use Application The applicant prepared a detailed Delineation and Mitigation Report and is proposing mitigation for the removal of trees on the WR2 site. (See Section 7,Delineation and Mitigation Report.) f. Progressive Mitigation Steps Required Applicant Response: On October 30,2012 City planning staff concluded that section 50.05.010.4.f is not applicable. The applicant conducted an exhaustive alternative analysis for siting the WR2. The options considered the 10th Street reservoir site,a combination of the existing 10th Street and Waluga Reservoir (WR1) site, and the proposed WR2 site. The City made the decision to locate 1.0 MG of storage, that would otherwise need to be located at the WR site,to the site of the existing Southside Reservoir. The City assumed a 10 percent reduction in average day demand to further reduce the size of WR2 The proposed site and the location within the site are the preferred alternative because of a variety of factors including presence of sensitive lands,slope increase,and the need to match the elevation of the WR1. A table showing which sites and locations made the final evaluation chart is included in Section 20,Correspondence. g. Mitigation Requirements Applicant Response: On October 30,2012 City planning staff determined that the mitigation criteria,LOC 50.05.010.4.f- g, are not applicable. However, the applicant will plant 254 native trees and 1,054 understory plants to provide additional screening and buffering. (See Section 7,RP and RC Delineation and Mitigation Plan,pages 4-6. See also, the tree mitigation response under the Tree Code (LOC 55.02.084)). For a discussion of mitigation trees proposed in the RCPA,see the response to LOC 50.05.010.5.c.iii(8), the standards for landscaping in an RCPA. 5. STANDARDS APPLICABLE TO RC DISTRICT a. Resource Conservation (RC) District Environmental Review Standards;Applicability and Purpose In addition to compliance with LOC 50.05.010.4.b, Modifications to Dimensional Standards and Setbacks of the Underlying Zone, and LOC 50.05.010.4.c, Density Transfer, applicants for development which are subject to environmental review pursuant to LOC 50.05.010.2 on property containing an RC district shall comply with the standards contained in LOC 50.05.010.5:b and 50.05.010.5.c in order to: i. Ensure that new development and alterations are compatible with and maintain the functions and values of resources within the RC district;and ii. Limit the amount of disturbance allowed within RC districts, while permitting reasonable development of property. b. RC District Protection Area i. The applicant for a major or minor development permit on a property containing an RC district shall designate a minimum of 50%of the RC district after delineation as the "RC protection area."The applicant for a development that does not otherwise require a major or Lake Oswego•Tigard Water Partnership sliming Water•connecting communities 70 19 minor development permit may designate a protection area as part of the application, but such application shall be processed as a minor development. ii. Except as otherwise provided in LOC 50.05.010.5.c, no development shall be permitted within the protection area. The area outside of the protection area may be fully developed pursuant to applicable regulations. iii. Except as provided in subsection 5.b.iv of this section, the location of the protection area shall be based upon the following criteria: (1) The protection area shall link to other RP or RC lands on the development site and on abutting properties, if such lands are present; (2) The trees having diameter at breast height(DBH)width greater than the median DBH within an RC district shall be included in the protection area; (3) The location of the protection area shall be designed to protect development from blow- down hazards; (4) The protection area shall protect steep slopes and resources close to water areas from potential erosion and water quality impacts; (5) The protection area shall protect wildlife habitat and travel corridors; (6) The protection area shall be designed to protect a contiguous canopy and a clustered configuration that does not fragment lands within an RC district; (7) The protection area shall consist of viable plant and wildlife communities; (8) The protection area shall maintain the scenic qualities of the site. iv. It is recognized that all of the criteria listed in subsection 5.b.iii of this section may not be applicable to every site. In some cases, the criteria may conflict on a given site. In such cases, the reviewing authority shall balance the applicable criteria in order to protect the most environmentally significant portion of the RC district. v. Once a protection area has been identified and protected pursuant to this section and approval becomes final, no future reduction in the RC protection area shall be permitted, unless the property owner files for a modification to the original permit and establishes a new protection area in compliance with subsection 5.b.iii of this section that is at least as large as the previously designated protection area, or demonstrates that the protection area as originally designated has degraded through natural causes pursuant to LOC 50.07.004.8.a, RP/RC district overlay procedures. vi. The City Manager shall note the establishment of a protection area in the SL Atlas, along with a reference to the application in which the protection area was created. vii. In order to put property owners and occupants on notice, the applicant shall execute a covenant running with the land that references the protection area and the City of Lake Oswego Department of Planning application file in which the protection area was established. Applicant Response: The site contains an RC overlay and the project will remove trees that are larger than 5 inches DBH. Consequently, the applicant proposes to establish an RCPA district on the site consistent with the requirements of this sub-section.The applicant will protect 50.2 percent of the district and the rest of the site will be used for the reservoir, access road,and underground piping. 0 Lake Oswego•Tigard Water Partnership sharing water•connecting rommunrtfes 71 Lake Oswego 20 Revised Waluga Reservoir 2-Land Use Application The eight criteria listed above are fully discussed in the RCPA Report (Section 6). The proposal succeeds in balancing the applicable criteria in order to protect the most environmentally significant portion of the RC district site. c. RC District Development Standards i. Except as provided in subsection 5.c.iii(8), Landscaping, of this section, a criterion applicable to the RC protection area shall apply to the entire RC district if no protection area has been established. Applicant Response: An RCPA district is proposed as a part of this application (Section 6); therefore, subsection C does not apply. {See response to subsection 5.c.iii(8) below.) iii.c(6) Utilities Public or private utilities shall not be placed in or through the RC protection area unless tunneling under a resource where tree roots can be avoided and the functions and values of a resource will be maintained, or there is no other practicable alternative. If allowed to be located within an RC protection area, the applicant shall restore and revegetate the disturbed area with plants identified on the Plant List and mitigation shall be required pursuant to LOC 50.05.010.4.e through 50.05.010.4.g. When applying Step 1 (avoidance) of the mitigation process: (a) Sanitary sewer, water, power, gas, telecommunications, cable and storm drain lines shall be maintained in public rights-of-way and routed around significant resources rather than through a resource wherever possible; (b) Drainage patterns shall not be altered in the resource area, or if altered, shall be designed and maintained so as not to adversely impact the functions and values of the resource. Applicant Response: The applicant hired David Evans and Associates,Inc. (DEA) to prepare a RC and RP Delineation and Mitigation Plan. (See Section 7.) East Waluga Park contains a large RC Tree Grove. No trees will be impacted within this portion of the project. Ground disturbing activities from open trenching will primarily impact non-native invasive vegetation,particularly Himalayan blackberry. The project alignment has been developed to avoid all trees and minimize disturbance. Therefore,although there will be temporary ground disturbance during construction, there will be no project actions that trigger the need for establishment of an RCPA area within the park. Likewise there will be no RCPA or tree code mitigation required. Ground disturbed during construction will be restored to existing grade and replanted with native shallow rooted shrubs and ground cover. There will be no net loss of resource area, functions, or values as a result of the proposed FWP development. (6) Landscaping in the RCPA (a) Plants. Plants used for landscaping within a protection area shall: (i) Be adapted to local soils and growing conditions; Lake Oswego •Tigard Water Partnership sflaring water•connecting communities 72 21 (ii) Not be dependent on long-term irrigation, which can increase erosion and sedimentation (irrigation necessary for initial establishment of the plants is not considered long-term irrigation); and (iii) Provide food or cover for wildlife. (b) The City shall maintain a Plant List on file in the Planning Division listing species that comply with this subsection. if a plant is listed in the applicable section of the Plant List for resource landscaping, it shall be presumed to comply with subsection 5.c.iii(7) of this section, Resource Enhancement Projects. The Plant List is not intended to be an exclusive listing of allowable landscaping materials, but shall be used as a guideline and may be updated by the City Manager from time to time as new plants in compliance with this section are discovered or become available. An applicant may utilize a plant not on the Plant List as long as it complies with the criteria in this section. (c) Removal of vegetation identified on the Plant List as appropriate for resource landscaping is not permitted from a protection area. (d) New landscaping shall not include any invasive plants on the City's Plant List. (e) Existing Landscaping:Nonconforming formal landscaped area including ornamental gardens and lawns located within a protection area and in existence at the time of the adoption of these standards maybe maintained, altered or modified pursuant to LOC 50.01.006.1, Nonconforming Use, Structure Defined; Rights Granted. However, a nonconforming landscaped area may not be expanded pursuant to LOC 50.01.006.5, Expansion of Nonconforming Industrial or Commercial Uses or Structures. Applicant Response: Section 7, RP and RC Delineation and Mitigation Plan and Section 17, Figures 13 and 14 detail the tree mitigation efforts made in the RCPA. The applicant will clear understory planting areas of invasive species prior to planting. New plantings will not include invasive species. Section 17,Figure 13,Landscape Legend,Notes and Tables, demonstrates that native plants will be used in the mitigation effort. The design team selected these plants because they are well adapted to local soils and growing conditions and because some plants will provide food and cover for local wildlife. An automatic temporary irrigation system will help increase the plant survival rate. The three-year planting monitoring goal is 80%plant survival rate after three years. Therefore, the proposal satisfies the requirements of this subsection. 6. STANDARDS APPLICABLE TO RP DISTRICT a. Resource Protection (RP) District Environmental Review Standards;Applicability and Purpose. In addition to compliance with LOC 50.07.004.8.c and 50.07.004.8.d and LOC 50.05.010.4.b and 50.05.010.4.c, applicants for development that is subject to environmental review on property containing an RP district shall comply with the standards contained in LOC 50.05.010.6.b through 50.05.010.6.d, in order to: i. Prohibit new development within an RP district following delineation of the resource or resources, except as provided in this section. In the event that development is allowed within an RP district, the applicant shall mitigate for the loss of or damage to the RP resource pursuant to LOC 50.05.010.4.e through 50.05.010.4.g; ii. Ensure that new development and alterations are compatible with and maintain the total land area and the functions and values of resources designated as RP; 40 Lake Oswego•Tigard Water partnership. sharing water•connecting communities 73 Lake Oswego 22 Revised Waluga Reservoir 2—Land Use Application iii. Allow for development opportunities for at least one single-family home in residential zones where an RP district occupies most or all of an individual property, pursuant to applicable mitigation criteria of LOC 50.05.010.4.e through 50.05.010.4.g. Applicant Response: The East Waluga Park site contains a wetland, an RP district resource.The FWP will be located 190 feet from the wetland; therefore, because the project will not impact the RP resource, the LOC does not require mitigation. (See Section 7, Delineation and Mitigation Report for a map of the RP resource and further discussion about the resource.) BUILDING DESIGN (LOC 50.06.001) 5. COMMERCIAL, INDUSTRIAL,AND MULTI-FAMILY DEVELOPMENT NOT LOCATED IN THE FMU ZONE, AND MINOR DEVELOPMENT IN THE R-DD ZONE STANDARDS FOR APPROVAL a. Applicability This standard is applicable in all zones except the FMU zone to: i. Ministerial development: development involving mechanical equipment, limited to L0050.06.001.5.b.viii(mechanical equipment screening); and ii. Minor and major development:development involving a structure for commercial, industrial, institutional, public use (including major public facilities and minor public facilities), multi- family residential, attached single-family(three or more units) residential development, and to all minor development within the R-DD zone. This standard is also applicable to exterior modifications of a structure which does not qualify as a ministerial development pursuant to LOC 50.07.003.13.a.ii(3). Applicant Response: The site is not located in an FMU zone. The building design standards apply to major public facilities. b. Design Standards Buildings shall be designed and located to complement and preserve existing buildings, streets and paths, bridges and other elements of the built environment, and to assure accessibility for bicyclists, pedestrians, and users of other transportation modes. i. Design buildings to be complementary in appearance to adjacent structures of good design with regard to: (1) Materials; (2) Setbacks (for retail/commercial part specifically); (3) Rooflines; (4) Height; and (5) Overall proportions. Applicant Response: ALake ater OswegoPartners•Tigardhi Wp sharing water converting cummurnties 74 23 The proposal is for a structure,a concrete water reservoir,rather than a residential or commercial building. The structure is a circular concrete tank with walls 49 feet tall. The roofline is rounded to minimize the visual appearance of sharp edges. (See Section 17.) The tank will be located beyond the required setbacks for the R-7.5 residential zone, surpassing the setback requirement on three of the four sides. On the fourth side,which also exceeds the setback requirement, the adjacent parcel is undeveloped and heavily forested. c. Buildings shall be designed and located to complement and preserve existing natural land forms, trees, shrubs and other natural vegetation. Applicant Response: The reviewer should evaluate the proposed utility structure in the context of the location,a heavily wooded site abutting a City park and a low density residential area. The project will result in the protection of 50.2 percent of the site as a RCPA. The reservoir is compatible with the neighborhood because it is screened by dense vegetation.The color of the tank will be either Willow Green or Green Slate,as shown below.The color will either be painted or embedded into the walls of the reservoir. Consequently,the reservoir will blend into the natural forested area. Green Slate Willow Green RESERVOIR COLOR OPTIONS d. Building shall be designed and constructed to reduce noise impacts on interior occupied spaces and adjacent property. Applicant Response: The WR2 will not produce any noises audible at the property line,consistent with this subsection. e. Buildings shall be designed and constructed with roof angles, overhangs, fleshings, and gutters to direct water away from the structure. Applicant Response: The structure is an enclosed tank and rainwater cannot penetrate the structural walls.Rainwater will be directed away from the foundation and into stormwater facilities. f. Buildings shall incorporate features such as arcades, roofs, alcoves, porticos and awnings to protect pedestrians from the elements. These projections shall maintain a minimum vertical clearance of 13 ft. six in. where over fire lanes. 0 Lake Oswego-Tigard Water Partnership sharing water.connecting communities 75 Lake Oswego 24 Revised Waluga Reservoir 2-Land Use Application Applicant Response: The structure is a water storage reservoir not intended to provide refuge to or facilitate access by pedestrians; therefore,it will not include arcades,alcoves,porticos, or awnings. g. Building orientation shall be designed to encourage pedestrian access from public streets and make the street pedestrian friendly. i. Applicability (1) This subsection shall apply to: (a) New construction, including removal of existing structure and construction of new structure within existing footprint;and ii. Building orientation shall include: (1) Locating buildings within 30 ft. of a public street except where prevented by topographic constraints, existing natural resources, or where, in multi-building complexes, the configuration of the lot prevents locating all buildings within 30 ft. of a public street. (2) Buildings located on sites with multiple frontages on public and/or transit streets shall provide at least one public entrance within 30 ft. of the transit street. (3) Buildings located on sites adjacent to a transit street shall have at least one public entrance within 30 ft. of the transit street. (4) Buildings that are within 30 ft. of a public street shall have a public entrance directly from the street. Applicant Response: Pedestrian access is possible through the site, however,a water reservoir is not a use that attracts pedestrian or vehicle trips outside of maintenance personnel. The proposed access road is intended for use by maintenance personnel and may occasionally be used by pedestrians connecting between Carman Drive, East Waluga Park,and Parkhill Street. The distance between WR2 and SW Parkhill Street is approximately 200 feet. The WR1 reservoir and three developed lots abutting SW Parkhill Street are intervening buildings which make it impracticable to locate WR2 within 30 feet of SW Parkhill Street. The distance between WR2 and SW Carman Drive is approximately 356 feet.The elevation differential between the WR2 site and SW Carman Drive is approximately 50 feet. The steepest slope on the site lies within a 30 to 40-foot swath abutting SW Carman Drive near the present site entrance. Because the current WR1 is more than 30 feet from Carman Drive and because the WR2 floor elevation must match the floor elevation of WR1,the WR2 cannot be located within 30 feet of Carman Drive. The site also contains a delineated RC district; development within the RC district necessitates the creation of a RCPA that will occupy 50.2 percent of the site. Locating the WR2 near the existing WR1 prevents additional impacts within the RC district.Therefore, the desire to protect existing natural resources requires placing the WR2 more than 30 feet from a public road. Therefore, the proposal is consistent with this section. 0 Lake Oswego•Tigard Water Partnership shoring water•connecting communities 76 25 h. Rooftop Decks Rooftop decks are prohibited on the pitched portion of any roof exceeding 2%slope. Decks on flat roofs shall not extend above the coping of the roof. Applicant Response: The reservoir will have a domed roof and will not include a deck. PARKING (LOC 50.06.002) 1. APPLICABILITY The provisions of this section shall apply to all development which generates a parking need. This shall include the construction of new structures, the remodeling of existing structures and a change of use which increases on-site parking or loading requirements or which changes access requirements. 2, STANDARDS FOR APPROVAL a. Vehicle Parking i. Required parking spaces shall be available for the parking of operable passenger vehicles of residents, customers, patrons and employees and shall not be used for the storage of vehicles or materials or for the loading and unloading or parking of vehicles used in conducting the business or use. ii. Number of Required Parking Spaces Applicant Response: As is stated in the Pre-Application Report (Section 20), a water reservoir generates minimal vehicle trips and minimal parking demand. Lake Oswego required an access road rather than on-site parking for the WR1 land use approval (LU01-0066). The applicant proposes to provide a 20-foot wide paved turn-around area that can accommodate two vehicles. Employees will not be stationed at the WR2 site.The WR2 parking demand is limited to 1-2 maintenance trips to the site a week. The reservoir has no habitable floor area for parking demand calculations. The gated entrance will prevent unauthorized parking on site. Therefore, the proposal is consistent with this section, CIRCULATION AND CONNECTIVITY (LOC 50.06.003) 1. ACCESS/ACCESS LANES(FLAG LOTS) a. Definition of Access For the purposes of this section, access shall be defined as: "area within public right-of-way directly affected by the traffic generated by the particular development and necessary to provide safe and efficient ingress and egress to the property." b. Applicability This section is applicable to all major developments and to the following minor developments: i. Construction or alteration of multi-family dwelling; 0 Lake Oswego•Tigard Water Partnership sharing woter•connecting communities 77 Lake Oswego 26 Revised Waluga Reservoir 2-Land Use Application ii. Construction or alteration of major public facilities; Applicant Response: The proposed WR2 proposal is a major public facility; therefore, this criterion applies 2. ON-SITE CIRCULATION-DRIVEWAY AND FIRE ACCESS ROADS a. Applicability This section is applicable to all development proposing a new use or an increased use on a site when the development will result in the construction of or the increased use of private streets, driveways, or parking lot aisles. Increased use shall be defined as an increase in trip generation or parking requirement. b. Standards for Approval i. Driveway Approaches-Locational Limitations and Restrictions (1) On corner lots where the adjacent streets are fully improved to their anticipated ultimate width, the nearest edge of a proposed driveway to the intersection shall be no closer than 30 ft. when measured from the projected curb of the street that is the most parallel to the alignment of the proposed driveway. (2) On corner lots where the adjacent streets are not fully improved to their anticipated ultimate width, the nearest edge of a proposed driveway to the intersection shall be no closer than 30 ft. when measured from the lot corner, or if the corner is a radius, from the point of intersection of the tangents. If right-of-way dedication is required as a condition of approval, the lot lines after dedication shall be used as the basis for determining compliance with this standard. (3) On lots with less than 75 ft. of continuous frontage on a single public street, only one driveway shall be permitted along that frontage. (4) All driveway approaches shall be located and designed so that the driver entering or exiting the driveway can see approaching traffic for a sufficient distance to make a safe entrance and exit. American Association of State Highway and Transportation Officials (AASHTO) standards shall be used in determining compliance with this standard. (5) The maximum width of a driveway approach, measured where the edges of the driveway meet the right-of-way, shall be governed as follows: (a) Single-family residential with garage door(s) facing the street: 12 ft. per garage or carport stall, or surface parking space, but not to exceed 30 ft. (b) Single-family residential with side-loading garage: 24 ft. (c) All other uses: 24 ft. unless otherwise justified by the recommendations of a traffic study. ii. Driveway Widths Driveways shall conform to the minimum width requirements of LOC 15.06.610 (Oregon Fire Code Adopted) and LOC 50.06.002, Parking. iii. Driveway Grades (1) The maximum grade of a driveway serving one single-family structure shall be 20%. If the grade exceeds 15%, then the residence must be provided with alternative methods for fire suppression, i.e., sprinklering. 0 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 78 27 (2) The maximum grade of a driveway for all other uses shall be 15%. (3) For all uses except residential structures of four units or less, there shall be a landing area where a driveway used by multiple drivers meets the public street. The landing area shall be a minimum of 25 ft long and shall have a maximum grade of 5%. The length and grade of the landing area described in this subsection presupposes that the abutting street has been fully improved to its ultimate anticipated width. if a driveway is proposed on a street that is not fully improved, and the development proposal is anticipated to proceed prior to the improvement of the street, the City Engineer shall determine the location and grade of the future street improvement and the applicant shall design the driveway and site grading so that this standard will not be compromised when the street is improved in the future. (4) Along the traveled way, grade breaks shall not exceed an algebraic difference of 9% unless accomplished by the construction of a vertical curve complying with the City's Standard Details. (5) The maximum cross-slope of a driveway shall be 5%, except for that portion of a driveway which must blend with an adjacent street grade that exceeds 5%. When blending is necessary, the length of the blended section shall be limited to 30 ft. iv. Fire Access Lanes (1) All developments shall comply with the minimum requirements for fire access roads as stipulated by the Fire Code and LOC Chapter 15. (2) The paved improvement of fire lanes, their associated turnarounds and right-of-way dimensions shall comply with the City's Standard Details. (3) When a fire access road is required to be used as a primary or alternate access route for the provision of emergency services to or through an abutting property, the fire lane shall be declared as such on a legal instrument to be recorded against the title of the affected property(ies). A declaration on a plat or on a recorded development plan may also be used to satisfy this standard. v. Turnarounds (1) If a dead-end driveway exceeds 150 ft. in length, it shall provide a fire department turnaround in compliance with the City's Standard Details. Exception: The Fire Marshal may approve driveways greater than 150 ft. in length if the structures greater than 150 ft. from the public road are provided with alternative methods of fire suppression, i.e., sprinklering. (2) Except where a continuous forward exit can be made out of the site, all developments with on-site loading and delivery areas shall provide a turnaround for delivery vehicles in compliance with the City's Standard Details. (3) Required turnarounds shall not overlap a required parking space. Applicant Response: On October 30, 2012,Lake Oswego staff found that although the proposal will result in a reduction of trips, the existing driveway will be improved to serve the proposed project. Staff asked the applicant to address the relevant standards for driveway approach,width, and grade, fire access lane, and turnaround. Section 17,Figure 4 of the application contains the Circulation and Access Plan. The plan shows that the sight distance is 170 feet along both approaches from Carman Drive. The stopping distance Lake Oswego•Tigard Water Partnership sharing water•connerring rnmmuniues 79 Lake Oswego 28 Revised Waluga Reservoir 2-Land Use Application from the driveway is 250 feet to the west and 200 feet to the east. In the pre-application comments the Fire Marshall requested a 16-foot access road within a 20-foot accessway. We are proposing a 20-feet wide access road.An access control gate is setback 40 feet from SW Carman Drive.A 20- foot fire access and turnaround is located at the southeast side of WR2.The overall grade of the driveway landing area is approximately 6 percent and is 17 percent from the control gate to the WR2. The applicant is requesting a minor variance to these standards. (See Minor Variance section below.) The project will comply with the requirements of subsection'c', standards for construction. Therefore,the proposal will be consistent with this section. MINOR VARIANCE LOC 50.02.002 2. VARIANCE STANDARDS a. The reviewing authority may grant a minor variance from the requirements of this Code, except as expressly prohibited, if it is established that: i. The granting of the variance will not be detrimental to the public health or safety, or materially injurious to properties or improvements within 300 ft. of the property. ii. The proposed development will not adversely affect existing physical and natural systems such as traffic, drainage, Oswego Lake, hillsides, designated sensitive lands, historic resources, or parks, and the potential for abutting properties to use solar energy devices any more than would occur if the development were located as specified by the requirements of the zone. 3. CLASSIFICATION OF VARIANCES A variance which would allow development not in conformance with the requirements of the development standards may be granted. The City Manager shall decide the classification of any variance application. Minor variances are small changes from the Code requirements and which will have little or no effect on adjacent property or users. Minor variances include: g. Variation to the maximum grade of a private street or driveway. Applicant Response: The driveway currently exists and is a private road. The driveway winds into the center of the WR2 site from Carman Drive and is well screened by vegetation and trees. (See Section 17,Figure 1, Existing Conditions.) The applicant proposes to widen the road to 20 feet and pave with asphalt consistent with Lake Oswego standards. (See Section 17,Figure 3,Master Site Plan.) The applicant proposes to vary the overall driveway grade from 15 percent to 17 percent and the driveway approach grade from 5 percent to 6 percent. (See Section 17,Figure 4, Circulation and Access Plan.) When improved, the driveway will still be well-screened. The applicant will comply with existing Lake Oswego erosion control and stormwater management requirements;thereby, minimizing impacts to soils and surface water. The Lake Oswego Fire Department has no objects to the variance.Therefore,the granting of the variance will not be detrimental to the public health or safety,or materially injurious to properties or improvements within 300 ft. of the property. , Lake Oswego•Tigard Water Partnership sharlog water,connecting Communities 80 29 The proposal will minimize impacts to the environment because the proposal reduces the amount of slope cut needed to meet the grade standard.The applicant is designing and will build stormwater facilities to capture and treat run-off consist with City standards.Retaining the grade as proposed will reduce the number of regulated trees the applicant would otherwise have to remove from the site.A 6 percent rather than a 5 percent approach grade will have no impact on the ability of maintenance vehicles safely entering and exiting the site.By retaining the proposed grades rather than pursuing more aggressive construction techniques necessary to meet the code requirements the proposed development will not adversely affect existing physical and natural systems. For these reasons, the applicant satisfies the approval criteria for a minor variance. 3. ON-SITE CIRCULATION-BIKEAWAYS,WALKWAYS,AND ACCESSWAYS a. Applicability This section is applicable to all minor and major development involving the construction of a new structure other than a detached single-family dwelling, duplex, or accessory structure, and subdivisions and planned developments. This section is also applicable to modifications which increase the square footage of commercial, industrial, public use or institutional buildings by more than 10%. For the purposes of this section, an "existing building"is a building as it exists on February 19, 1998. Applicant Response: On October 30,2012,Lake Oswego staff found that the City's Trail Master Plan does not require a public pathway on the WR2 site.There is no nexus between the project's minimal trip generation and the need for public access. However,Lake Oswego staff found that the standard does require that a private on-site pedestrian path is warranted. b. Standards for Approval i. Commercial, industrial, public use, and institutional developments of one acre or more shall provide a pedestrian circulation plan for the site. (1) Pedestrian connections between the proposed development and existing development on adjacent properties other than connections via the street system shall be identified and implemented, where feasible. ii. Walkways shall connect at least one public entrance of each building accessible to the public to the nearest public walkway or other walkway leading to a public walkway. Walkways shall also connect to other areas of the site, such as parking lots and outdoor activity areas, to other building entrances, to adjacent streets and nearby transit stops. N. Walkways shall meet accessibility standards of the Americans with Disabilities Act(ADA) and standards as found in the Oregon State Structural Specialty Code, Section 1103, if applicable. Walkways within the site, connections to the public sidewalk, and external connections off site shall provide convenient, accessible, and the most practical direct, barrier-free route design. iv. Portions of walkways shorter than 30 ft. across driveways, parking lots or walkways crossing surfaces shared by fork lift or heavy truck traffic may use a painted crossing zone. Otherwise, walkways crossing driveways, parking areas, and loading areas shall be clearly ,, Lake Oswego•Tigard Water Partnership sharing water connecting communities 81 Lake Oswego 30 Revised Waluga Reservoir 2-Land Use Application identifiable through the use of a different paving material, raised elevation, or other similar method. (1) Where walkways are adjacent to vehicle travel areas, they shall be separated by a raised curb, bollards, buttons, landscaping or other physical barrier. If a raised walkway is used, the ends of the raised portions shall be equipped with curb ramps. v. Accessways for use by pedestrians and bicyclists shall be required when necessary to provide direct routes not otherwise provided by the existing right-of-way. Developments shall not be required to provide right-of-way for accessways off site to meet this requirement. If right-of-way is otherwise available off site, the developer may be required to improve an accessway off site to the nearest transit route. Applicant Response: This code section applies to uses that generate pedestrian or bicycle traffic. The WR1 and WR2 will generate 1-2 maintenance vehicle trips to the site per week. The need for private on-site maintenance access is limited to these few weekly maintenance trips. Maintenance personnel will be able to walk up the access drive to WR2,to the stormwater maintenance area via a 12-foot gravel path,around WR2 to WR1 via a 10-foot gravel access path, and to the overflow detention pond via a 14-foot wide gravel access lane. The scope of the private on-site pedestrian activity is commensurate with the demand it creates. The applicant acknowledges that the public may walk along the private driveway.They will be able to walk around the 20-foot wide access control gate at Carman Drive access point and the 12-foot wide control gate at the SW Parkhill Street access point. Consequently, the site will be accessible by foot to both maintenance personnel and to the general public. The applicant believes that the proposed circulation plan is sufficient to satisfy the demand for private on-site pedestrian access. This position is bolstered by the views of many neighbors that a public accessway through the site might create an unnecessary crime hazard. These views are consistent with the applicant's desire to keep this essential public facility secure from vandalism or other unwarranted activity. Therefore,the proposal is consistent with this section. C STANDARDS FOR CONSTRUCTION Applicant Response: The applicant proposes to construct a private gravel driveway and gravel accessways to the stormwater pond,the water detention area, and between reservoirs as shown on the Circulation and Access Plan, Section 17,Figure 7. These facilitates are adequate to accommodate the 1-2 weekly maintenance visits. 4. LOCAL STREET CONNECTIVITY a. Applicability This section is applicable to: i. Any development that results in the construction of a street; or 0 Lake Oswego•Tigard Water Partnership sharing water connecting communities 82 31 ii. Construction of a detached single-family dwelling, duplex, zero lot line dwelling, multi-family dwelling, commercial, industrial, institutional, or public function structure;and is located on a parcel or parcels of vacant or redevelopable land of one and three-fourths acres or larger. iii. Any construction of a detached single-family dwelling, duplex, zero lot line dwelling, multi- family dwelling, commercial, industrial, institutional, or public function structure, or any land division that abuts a parcel upon which there is a street that has been "stubbed"to the proposed development parcel. Applicant Response: The proposed project is for a public facility on a site larger than one and three fourths of an acre. On October 30,2012,Lake Oswego planning staff found that since the proposal will not provide a street through the site,the application should address LOC 50.06.003.4.c.vi which allows an exception to the construction of a street connection through the site. Staff also directed the applicant to address subsections c.vii and c.viii for residential accessways as an alternative to a street connection. LOC(50.06.003.4,C) vi. The reviewing authority may allow an exception to the review standards of subsections 4.c.i through 4.c.v of this section based on findings that the modification is the minimum necessary to address the constraint and the application of the standards is impracticable due to the following: (1) Extreme topography(over 15%slope) in the longitudinal direction of a projected automobile route; (2) The presence of sensitive lands as described in LOC 50.05.010, or LOC 50.05.011, Flood Management Area, or other lands protected by City ordinances, where regulations discourage construction of or prescribe different standards for street facilities, unless the nearest through street pairs (see Figure 50.06.003-A: Street Connectivity) surrounding the subject site are more than one-quarter mile apart. The reviewing authority may determine that connectivity is not required under this circumstance, if a benefitfcost analysis shows that the traffic impacts from development are low and do not provide reasonable justification for the estimated costs of a full street connection; (3) The presence of freeways, existing development patterns on abutting property which preclude the logical connection of streets or arterial access restrictions; (4) Where requiring a particular location of a road would result in violation of other City standards, or state or county laws or standards, or a traffic safety issue that cannot be resolved; or (5) Where requiring streets or accessways would violate provisions of leases, easements, covenants, restrictions or other agreements existing as of May 1, 1995, which preclude required street or accessway connections. vii. if the reviewing authority allows an exception to subsection 4.c.ii of this section for full street connections, it shall require residential accessway connections on public easements or rights-of-way so that spacing between bicycle and pedestrian connections shall be no more than 330 ft. measured from the centerline of the nearest bicycle and pedestrian connection intersection with the cross street. viii. The reviewing authority may allow a reduction in the number of residential accessway connections required by subsection 4.c.vii of this section based on findings that demonstrate: tt, Lake Oswego•Tigard Water Partnership sharing water connecting rammunines 83 Lake Oswego 32 Revised Waluga Reservoir 2-Land Use Application (1) That reducing the number or location of connections would not significantly add to travel time or distance from the proposed development to bus lines or activity centers in the area, such as schools, shopping, or parks; or (2) That existing development patterns on abutting properties preclude logical connection of residential accessways; or (3) That the traffic impacts from development, redevelopment or both are low and do not provide reasonable justification for the estimated costs of such accessway Applicant Response: The proposed finished grade of the driveway will be 17 percent. (See discussion above of a variance from the 15 percent grade.) The site contains an RC district. The projected use of the site will generate an average of 1 or 2 weekly maintenance vehicle trips. The proposal is exempt from the requirements of subsections 4.c.i through 4.c.v. The distance across the northern property line at Carman Drive and Parkhill Street is approximately 700 feet. As discussed above, the applicant will provide private maintenance access and limited public pedestrian access through the site. The traffic impacts this proposal generates will be 1-2 weekly maintenance vehicles, far less than the 10 average daily trips a single family home generates. Therefore, consistent with subsection 4.c.viii.2, the traffic impacts do not provide reasonable justification for additional accessways. 5. TRANSIT SYSTEM a. Applicability This standard is applicable to all new subdivisions, planned developments, residential developments of four units or more, and new commercial, institutional and industrial developments, and major public facility structures located on a transit street or within one-quarter mile of a transit street. Applicant Response: This proposal is for a major public facility not within one-quarter mile of a transit stop. Therefore, this criterion does apply. As the proposed use will not generate any ridership, the current transit facilities in the area will not be affected. SITE DESIGN (CDC 50.06.004) 1. LANDSCAPING, SCREENING AND BUFFERING a. Applicability i. Except as provided in subsection 1.a.ii of this section, this section is applicable to: (3) Major public facilities; ii. The above developments located within the Downtown Redevelopment Design District shall comply with LOC 50.05.004 rather than the provisions of this section. Applicant Response: This section applies to major public facilities such as the WR2. 40 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 84 33 b. Standards for Approval i. Commercial, institutional, and industrial development, other than in the Office Campus zone, shall provide a minimum of 15%of gross land area in landscaping and/or open space visible from off site, including courtyards, planters, raised beds, espaliers, etc. Developments involving office campus and major public facilities shall provide a minimum of 20%. ii. Multi-family and manufactured home park development must provide 20% of gross land area in landscaping in addition to the park and open space requirements. iii. Public and semi-public use must meet subsections 1.b.i or 1.b.ii of this section, depending on use. iv. All development abutting streets shall provide street trees at the proper spacing for the species. v. Parking lot plantings shall be designed to allow surveillance of the lot from the street at several points. vi. For commercial, institutional, industrial, multi-family dwelling, manufactured home parks, office campus, and major public facilities: (1) Screening and buffering shall be required: (a) To mitigate noise, lighting or other impacts from dissimilar uses. (b) To screen public or private utility and storage areas and parking lots. (c) As a separation between dissimilar uses. (2) Landscaping visible from the street or other public right-of-way shall be complementary to the landscaping in the surrounding area. vii. Any development in the EC zone that is abutting dissimilar uses in the R-DD zone must provide a minimum of 15 ft. of landscaped area to act as a separation and to screen and buffer noise, lighting or other impacts between the dissimilar uses. viii. Rare and endangered species as identified below shall be preserved: (1) Marsh or Sessile Trillium: "Trillium chloropetalum." (2) Fawn Lily: "Erythoroium oreganum." (3) White Larkspur: "Delphinium leucophaeum." c. Standards for Installation and Construction i. All plant materials shall conform in size and quality grade to the American Standard for Nursery Stock, current edition. ii. All plant material shall be installed according to Sunset Western Garden Book, current edition. iii. Except for single-family residential developments that require street trees, all planting shall have an irrigation system installed to meet standards of Turf Irrigation Manual, current edition, unless the applicant can demonstrate to the satisfaction of the reviewing authority that such system is not necessary. iv. Existing vegetation may be used in a landscaping plan. Construction shall not be allowed within the drip lines of trees which are to remain. Finish grade shall be at the original grade or a well or planter constructed equal in size or greater than the drip line. v. Topsoil removed during construction shall be replaced with topsoil. 40 lake Oswego-Tigard Water Partnership sharing water•connecting wmmunihes 85 Lake Oswego 34 Revised Waluga Reservoir 2-Land Use Application vi. Plant materials for use in parking lots and streets shall have a mature height of less than 25 ft. in areas where overhead utilities are present. vii. Plant materials listed as "Prohibited Street Trees"in the Lake Oswego Master Plant List, LOC 50.11.004, Appendix D, shall be prohibited as street trees, except those cultivars that do not have the characteristics identified by its species. viii. When a tree is located within a sidewalk, the tree base shall be protected from damage by pedestrians and other causes in a manner that complies with the City Engineer's specifications and applicable federal and state law, i.e., Americans with Disabilities Act. ix. Plant material used for screening and buffering shall: (1) Be of a size to provide an effective screen within two to five years of the planting date. (2) Be planted in a single row on centers equal to one-half mature width of the plant material or in staggered multiple rows. (3) Be a minimum of six ft. high at maturity;or as determined by the City Manager to buffer or screen a specific situation except as prohibited by LOC 50.06.011, Vision Clearance. [Cross-References: LOC Chapter 55—Removal of Trees; LOC 50.06.001.3.d—Street Trees in the R-6 Zone.] Applicant Response: This WR2 FWP proposal will create impervious surface areas over 18.5 percent of the site. 50.2 percent of the site will be preserved as an RCPA. The project will restore disturbed areas to current or better condition. (See Section 17.) The Delineation and Mitigation Report in Section 7 provides detailed information about the specific plant types,used to restore the site after construction. This proposed landscaping will be complimentary to what is currently on the site and is generally found throughout the area. The project does not involve street improvements on-site. The majority of the street trees and foliage along Carman Drive will be preserved except where necessary to meet LOC site distance requirements. Screening and buffering is an important component of the WR2 locational and mitigation decisions. The first consideration for replanting was to mitigate in buffer areas between the WR2 and neighbors and other uses. Therefore, the proposal is consistent with this section. 2. FENCES a. Purpose The purpose and intent of this section is to provide standards and regulations regarding the location, height, materials, maintenance and appearance of fences, walls, and retaining walls within the City of Lake Oswego. b. Applicability No person shall construct a fence, wall, or retaining wall in violation of this section. c. Location and Height 1. Fences and walls in residential zones shall not exceed six ft in height unless otherwise provided below:0Lake Oswego •Tigard Water Partnership sharing water,connecting communities 86 35 (1) Four ft. in height when located within ten ft. of a property line abutting a public or private street or an access easement which serves more than two lots. This restriction shall not apply to properties which abut an access easement but which do not have a legal right to use the easement. For purposes of determining fence height under this subsection, alleys are not considered as public streets. (2) Four ft. in height when located within the front yard setback of the Old Town Neighborhood. ii. Gates in a fence or wall located within ten ft of a property line abutting a public or private street or an access easement shall not exceed six ft. in height. iii. Portals located within ten ft. of a property line abutting a public or private street or an access easement shall not exceed eight ft. in height. iv. Fences, walls, and retaining walls in nonresidential zones shall not exceed eight ft. in height. Mixed use commercial/residential zones shall be considered a residential zone for purposes of this section. A fence, wall, or retaining wall over six ft. height shall be screened by an evergreen hedge which shall be of a size and spacing so as to provide a six-ft. high, dense screen within three years of the date of planting. Any fence over six ft. in height requires a building permit. v. Fences, walls, retaining walls, gates, and portals shall comply with the provisions of LOC 50.06.011 (Vision Clearance). vi. Every body of water, as defined in LOC 50.10.003.2, shall have a barrier as required by the State of Oregon One and Two Family Dwelling Specialty Code. vii. Retaining Walls within Residential Zones (1) Retaining wall less than four ft. in height may be located in the required setback; provided, that if there are multiple retaining walls within the setback, each retaining wall shall be located no closer than five ft. to another retaining wall, as measured from the back of one retaining wall to the front of the other retaining wall. (2) Retaining walls four ft. and greater in height shall be required to meet all setback requirements. Property owners shall be required to obtain a building permit for retaining walls greater than four ft. in height or for any wall over two ft. that supports a surcharge. (3) Retaining walls shall not be permitted in any rights-of-way, except with prior approval of an encroachment permit. viii. Fence Located on Top of or Near Retaining Walls (1) The combined height of a retaining wall and fence, where the fence is located either on top of or within five ft of the face of the retaining wall on the upslope side, shall be less than eight ft., as measured from the lower side of the retaining wall. (2) No fence shall be located either on top of or within five ft of the face of the retaining wall on the upslope side when either the retaining wall or the fence is located within ten ft. of a public or private street or an access easement which serves more than two lots. ix. Berms, when used in conjunction with fences or walls, shall be included in height determinations. x. Exceptions from Height Limitations The height limitations of this section do not apply to: (1) Fences which either provide security or are accessory or incidental to the use of a major public facility, minor public facility, or public transportation facilities; or 0 Lake Oswego•Tigard Water Partnership sharing water connecting communities 87 Lake Oswego 36 Revised Waluga Reservoir 2-Land Use Application (2) An open (80%open) fence which is not located in the front yard(forward of the primary structure to the front lot line) and which encloses part or all of a tennis court, swimming pool, playing field, park, recreation facility, public or semi-public utility structure; or (3) A noise fence permitted by the Oregon Department of Transportation abutting the right- of-way of Highway 43, but only to such height limits approved by ODOT; or (4) Retaining walls used to directly support a driveway or car parking area for a single-family residence; or (5) Retaining walls used to support right-of-way embankments subject to approval by the City Manager or designee. Such fence height exempted under the above subsections shall not exceed ten ft. except a noise fence under subsection 2.c.x(3) of this section. d. Materials—Standards for Construction i. The unfinished or structural side of a fence or retaining wall shall face the owner's property unless written consent has been obtained from all abutting property owners to face the unfinished or structural side of the fence in another direction. ii. Fences shall not be constructed of, or contain, any material which will do bodily harm, such as electric or barbed wire, broken glass, spikes, or any other hazardous or dangerous material, except as follows: (1) Barbed wire or electrified fences enclosing permitted livestock are permitted provided the barbed wire and electrified fences shall be posted and flagged at not less than 15-ft. intervals with clearly visible warnings of hazard. (2) Barbed wire or upturned barbed salvage is permitted more than six ft. above grade in GC and industrial zones;provided, that barbed wire shall not extend over a public or private street, alley, fire lane, or the property boundary of a property zoned residential. When used along a public or private street, the fence shell be screened from the street by an evergreen hedge which shall be of a size and spacing so as to provide a six-ft high, dense screen within three years of the planting date. iii. The enclosure surrounding a body of water as defined in LOC 50.10.003.2 shall be of a material type and constructed such that no openings, holes or gaps exist which are larger than four in. in any dimension except for doors or gates. (1) All gates or door openings shall be equipped with an automatic closing and automatic latching device combined with a lock which must be locked when the facility is not in use. Doors of any occupied dwelling forming part of the enclosure need not be provided with the automatic locking and latching devices. iv. Within the R-DD zone: (1) Except for stone fences as authorized by subsection 3.d.iv(3) of this section, fencing included in the front yard shall be used in an ornamental or symbolic way, rather than as a visual barrier. (2) Metal chain link fencing is prohibited except for: (a) Temporary fencing used in tree protection measures as required in LOC 55.08.030 or in construction fencing; and (b) Vinyl clad metal chain link in the siide and rear yards of properties located east of Furnace Street;provided, that the fence does not extend into the front yard setback. (3) Construction of new stone fences or maintenance of existing stone fences is encouraged. Lake Oswego•Tigard Water Partnership sharing water•connecting communities 88 37 Applicant Response: This proposal includes six-foot chain link fencing around the site perimeter and an entrance gate at Carman Drive and Parkhill Street. Green, 4-foot, chain link fences will surround the open stormwater water quality detention pond and the WR2 tank overflow detention pond. These gates and fences are necessary to secure the perimeter,restrict vehicular access, and improve safety around the detention ponds. The fences and gates meet all setback and construction materials standards found in this code section. 3. LIGHTING STANDARDS a. Applicability i. This section is applicable to all minor or major development which results in increased use of public and private streets, public pathways and accessways, or parking lots, and lots in the PF and PNA zones. ii. Temporary lighting for theatrical, television, and performance areas, and lights associated with special events are not subject to this section if no "development"occurs. Applicant Response: This proposal does not include any street lights or permanent on-site lighting; therefore, this section does not apply. PARK AND OPEN SPACE CONTRIBUTIONS (LOC 50.06.005) 1. APPLICABILITY a. Except as provided in LOC 50.06.005.1.b, this section is applicable to all major development, and to the following minor developments: i. Construction or alteration of multi-family dwelling; ii. Construction or alteration of major public facilities,' iii. Construction or alteration of commercial development; iv. Construction or alteration of institutional development; v. Construction or alteration of industrial development; and vi. Partitions and subdivisions, when the parent lot is greater than 75,000 sq. ft. b. The above developments located within the Downtown Redevelopment Design District shall comply with LOC 50.05.004.8 rather than the provisions of this section. Applicant Response: The proposal is for a major public facility; this section applies. 2. DEVELOPMENT REVIEW The review procedures for park and open space contributions are located in LOC 50.07.004.7, Park and Open Space Contribution. 3. STANDARDS FOR APPROVAL 0 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 89 Lake Oswego 38 Revised Waluga Reservoir 2-Land Use Application a. Amount of Open Space Required i. All developments, except as otherwise provided by this section, shall provide open space land approved by the City in an aggregate amount equal to at least 20%of the gross land area of the development. ii. Commercial(except commercial development in OC zone), institutional, and industrial development shall provide open space approved by the City in an aggregate amount equal to at least 15% of the gross land area of the development. iii. Subdivisions and major partitions on sites of greater than 75,000 sq. ft. in size shall provide open space approved by the City in an aggregate amount equal to at least 20% of the gross land area of the development. iv. Subdivisions and major partitions of 75,000 sq. ft. or less shall provide open space for the following areas of the site: (1) Areas identified as RP(Resource Protection) or RC (Resource Conservation) on the Sensitive Lands Atlas. (2) A 50-ft. buffer along a mapped recreational trail that crosses or is abutting the site, to a maximum of 20%of the gross site area. If the buffer area would exceed 20%of the gross site area, the buffer area shall be uniformly reduced along the recreational trail so that the buffer area is 20%of the gross site area. (3) Exception: The buffer width may be reduced to a lesser amount, up to zero, as designated by an adopted trail plan for the mapped recreational trail. (4) The area of the site contains resources identified as Class 1 or ll Riparian Corridors/Wildlife Habitat or Class A or B Upland Wildlife Habitat as mapped on Metro's Title 13 Regionally Significant Fish and Wildlife Habitat Inventory Map (adopted by Metro on September 29, 2005, and amended on December 8, 2005);provided, however, the maximum required area is 20%of the gross site area. See Figure 50.07.007-C: Regionally Significant Fish and Wildlife Habitat Inventory Map. b. Required Open Space—How Provided Open space land in commercial, institutional, public use, industrial and office campus areas may be provided as a combination of reserved land and landscaping. Where no RP or RC district resources or public park land is located on the site, the open space requirement can be met by protecting nondesignated natural resource areas and/or providing landscaping which meets the requirements of the landscaping standard. [Editor's Note: LOC 50.06.005.3.a.iv(4) is repealed upon enactment of an updated Sensitive Lands Atlas,which includes the resources inventoried between 2003 and 2007 per Ordinance 2499, Section 6.] Applicant Response: The proposal provides on-site open space well in excess of the 20% requirement. 50.2 % of the site will be set aside with an RCPA overlay designation,which will prohibit most types of future use on the site. Additionally, other areas of the site which will be used for construction will be replanted and landscaped as open space. (See Section 17 for landscape and RCPA figures). • Lake Oswego•Tigard Water Partnership shoring water connecting communities 90 - - _ 39 GEOLOGIC HAZARDS AND DRAINAGE (LOC 50.06.006) 1. WEAK FOUNDATION SOILS a. Applicability This section applies to all development which will involve proposed structures located in areas identified as "Potential Weak Foundation Soils." b. Weak Foundation Soils Maps i. Weak foundation soils are identified in the "Engineering Geology"report supplement and accompanying map of the Lake Oswego Physical Resources Inventory, March 1976. ii. These soils are also identified and described in the report entitled "Soil Survey Interpretations for Land Use Planning and Community Development, Lake Oswego Area, Oregon,"USDA Soil Conservation Service, December 1975. The SCS map units which correspond to the Engineering Geology units above are listed in Table II: Characteristics and Limitations of Earth Materials, in the Engineering Geology Report of L.O.P.R.I. c. Development Review The review procedures for a determination of weak foundation soils are located in LOC 50.07.004.10, Weak Foundation Soils Determination Procedures. d. Standards for Approval The presence of weak foundation soil is not a cause for denying development, but may cause density to be reduced, structural modifications to be required, or structures to be relocated. Applicant Response: The site is located within an area of mapped potential weak foundation soils. A Geotechnical Report is provided in Section 12. Based on the results of test pit explorations completed by GM and review of the baseline geotechnical report completed for the project, the reservoir site is underlain at shallow depths by hard rock. Weak foundation soils as defined in the Lake Oswego Municipal Code 50.42 are not located on site. The WR2 will be built on a rock foundation, the best type of base for this type of structure. Based on site topography, GM concluded that the risk of earthquake-induced slope instability is very low. Based on the elevation and location of the site,the risk of damage by tsunamis,lateral spreading, and/or seiches is absent. The risk of subsidence at the site is very low. GRI's review of geologic maps and available subsurface information indicates that no faults have been mapped in the immediate area of the site. The GRl report concluded that the potential for fault rupture at the site is very low unless occurring on a previously unmapped fault. OBEC Consulting Engineers prepared a seismic assessment report for the WR2. The OBEC report concluded that the WR2 will be designed and constructed to meet or exceed all applicable seismic codes and standards and will withstand a Maximum Credible Event (MCE) that considers both the Cascadia Subduction Zone and Portland crustal seismic sources,including the predicted magnitude 9.0 CSZ earthquake. The WR2 serves an essential emergency function because it must maintain water pressure for fire protection following an earthquake. The WR2 will be designed with a 1.5 Lake Oswego•Tigard Water Partnership shoring water•connecting commuties 91 Lake Oswego 40 Revised Waluga Reservoir 2—Land Use Application importance factor, typically used for construction of new fire stations and hospitals. Consequently, the proposal meets the requirements of this section, 2, HILLSIDE PROTECTION a. Applicability This section applies to all development which includes hillsides or areas with erosion potential. b. Hazard Area Maps Known Potential Severe Landslide Hazard Areas are described and mapped in the Engineering Geology chapter of the Lake Oswego Physical Resources inventory, March 1976, on file at City Hall; specifically in Table II, Characteristics and Limitations of Earth Materials, and Engineering Geology map. c. Development Review The review procedures for development in a hillside protection area are located in LOC 50.07.004.3, Hillside Protection. d. Standards for Approval i. All developments on undisturbed slopes shall be designed to minimize the disturbance of natural topography, vegetation and soils. ii. Designs shall minimize cuts and fills. iii. Cuts and fills shall conform to the minimum requirements of LOC Chapter 45. iv. Development Prohibited (1) Where landslides have actually occurred, or where field investigation confirms the existence of a severe landslide hazard, development shall be prohibited except as provided in subsection 2.d.iv(2)of this section. (2) Exceptions. A licensed geotechnical engineer, registered civil engineer experienced in soils engineering, or licensed engineering geologist shall certify that methods of rendering a known hazard site safe for construction are feasible for a given site. The applicant shall establish that the proposed methods are adequate to prevent landslides or damage to property and safety. The granting authority may allow development in a known or confirmed landslide hazard area if specific findings are made that the specific provisions in the design of the proposed development will prevent landslides or damage. The granting authority may apply any conditions, including limits on type or intensity of land use, which it determines are necessary to assure that landslides or property damage will not occur. v. Cuts and Fills On land with undisturbed slopes in excess of 12%, cuts and fills shall be regulated in accordance with LOC Chapters 45 and 52, and as follows: (1) Toes of cuts and fills shall be set back from boundaries of separate private ownerships at least three ft., plus one-fifth of the vertical height of the cut or fill. Where a variance is required from that requirement, slope easements shall be provided. (2) Cuts shall not remove the toe of any slope where a severe potential landslide or erosion hazard exists (as defined in this standard).0i`� WLakeater OswegoPartners•Tigardhi Baring water.connecting communities 92 41 (3) Any structural fill shall be designed by a registered engineer, in accordance with standard engineering practice; the engineer shall certify that the fill has been constructed as designed and in accordance with the provisions of LOC Chapter 45. (4) Retaining walls shall be constructed in accordance with the Oregon State Structural Specialty Code, as enacted on January 1, 2002, or as thereafter amended by the Oregon Building Codes Division. vi. Roads shall be the minimum width necessary to provide safe vehicle access, minimize cut and fill, and provide positive drainage control, all in accordance with LOC Chapter 42. vii. Land over 50% undisturbed slope shall be developed only where density transfer is not feasible. The development will provide that: (1) At least 70%of the site will remain free of structures or impervious surfaces. (2) Emergency access can be provided. (3) Design and construction of the project will not cause erosion or land slippage. (4) Grading, stripping of vegetation, and changes in terrain are the minimum necessary to construct the development. e. Construction Standards i. All development activity on undisturbed slopes shall minimize stripping or other soil disturbance and shall provide prevention measures in accordance with LOC Chapter 52, Erosion Control. ii. Plastic mulch may be used only temporarily, during construction activities. iii. Slope stabilization and revegetation measures: (1) No grading, clearing or excavation of any land shall be initiated prior to approval of the grading plan. The plan shall be approved by the City Manager as part of the development permit. (2) The developer shall be responsible for the proper execution of the approved grading plan. (3) No more than 65%of area in undisturbed slopes of 20%to 50%shall be graded or stripped of vegetation Applicant Response: GeoDesign prepared a technical report for the WR2 application. See Section 12. The WR2 construction area is generally flat and slopes gently to the north and mean sea level elevation differential of 298 feet to 307 feet. Basalt rock underlays the site and will support the WR2 structure. The GeoDesign report provides extensive construction details, consistent with the intent of the section,which the applicant will implement. The access road which has and average slope of 17 percent. All structural fills will be designed by a registered structural engineer. The erosion control plan was prepared to be consistent with LOC Chapter 52 and recommends use of Lake Oswego approved strategies such as check dams and bio-filter bag, turf reinforcement mats, and sediment fences. See Civil Erosion Control Plan prepared by Black and Veatch. For these reasons the proposal is consistent with this section. tieLake Oswego.Tigard Water Partnership shoring water•connecting communities 93 Lake Oswego 42 Revised Waluga Reservoir 2—Land Use Application DRAINAGE STANDARDS a. Drainage Standards for Ministerial and Minor Development i. Applicability This section shall be applicable to all ministerial development decisions and minor development decisions within the City. b. Drainage Standard for Major Development i. Applicability This section is applicable to all major developments. ii. Standards for Approval (I) inspection and Maintenance All drainage management measures, whether located on private or public property, shall be accessible at all times for City inspection. When these measures have been accepted by the City for maintenance, access easements shall be provided at such a width to allow access by maintenance and inspection equipment. (2) Stormwater Runoff Quality All drainage systems shall include engineering design features to minimize pollutants such as oil, suspended solids, and other objectionable material in stormwater runoff (3) Drainage Pattern Alteration Development shall be conducted in such a manner that alterations of drainage patterns (streams, ditches, swales, and surface runoff)do not adversely affect other properties. (4) Stormwater Detention Sufficient stormwater detention shall be provided to maintain runoff rates at their natural undeveloped levels for all anticipated intensities and durations of rainfall and provide necessary detention to accomplish this requirement. (5) Required Stormwater Management Measures The applicant shall provide sufficient stormwater management measures to meet the above stormwater runoff requirements. The applicant shall provide designs of these measures taking into account existing drainage patterns, soil properties(such as erodibility and permeability)and site topography. iii. Standards for Construction (1) Landscaping and Topography Detention or retention areas shall, where possible, use natural topography and existing vegetation. In addition to or as replacement for existing vegetation these areas shall be landscaped with ecologically compatible trees, shrubs, and permanent ground cover. Basin or pond side slopes shall be grassed and mulched to prevent erosion. (2) Outlet Structures Outlet control structures shall be designed as simply as possible and shall require little or no attention for proper operation. (3) Sideslopes The sideslopes of all man-made detention or retention basins or retention ponds shall be sufficiently sloped or treated so as not to create a safety hazard, or maintenance problem. (4) Emergency Overflow or Bypass Lake Oswego•Tigard Water Partnershi shooing water•connecting communntes 94 43 All stormwater storage areas shall be provided with some means of emergency overflow or bypass in accordance with one of the following standards: (a) Emergency Overflow An appropriate surface or subsurface drainage system shall be provided as a method of emergency overflow in the event that a storm in excess of the 50-year frequency storm occurs. This emergency overflow system shall be designed to function without attention and shall direct this excess flood water to an appropriate existing drainage pattern. (b) Bypass (i) A surface or subsurface drainage system shall be installed with adequate capacity to convey around the storage area the stormwater runoff from all upstream tributary areas. This "bypass"channel shall be designed to carry the peak rate of runoff from a 50-year storm. (ii)No habitable or storage structures shall be constructed within bypass channels; however, streets and parking or playground areas and utility easements shall be considered compatible uses. (c) Hydraulic Calculations Shall be submitted to substantiate all design features. (5) Secondary Uses Stormwater detention or retention areas may be designed to serve a secondary purpose for recreation, open space, or other types of uses that will not be adversely affected by occasional or intermittent flooding. (6) Release Rate Outlet The outlet opening controlling the release rate of detained stormwater runoff shall be: (a) Sized so as not to exceed the water conveyance capacity of the downstream drainage system; (b) Small enough to cause stormwater runoff to be detained from a storm of at least the undeveloped ten-year frequency; (c) Designed to prevent siltation or clogging of the outlet opening; and (d) Provided with a means of adjusting the size of the outlet openings. (7) Required Detention Volume for Developments Detention volume shall be the maximum difference between: (a) The stormwater runoff produced from the proposed development site by a 50-year storm; and (b) The stormwater runoff produced from the pre-development site area by a ten-year storm. (8) Detention Basins (a) Low Flow A positive method of carrying the low flow through detention ponds shall be provided. This method shall have a positive gravity outlet to a downstream drainage system with adequate capacity. (b) Maximum Depth 0 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 95 Lake Oswego 44 Revised Waluga Reservoir 2—Land Use Application Maximum depth of detention ponds shall not exceed four ft. unless the existing natural ground contours and other conditions lend to greater storage depth, which may be approved by the City Manager. (c) Minimum Sideslopes The minimum sideslopes of detention ponds shall be 50 to one (2%) or sufficient to ensure complete drainage of said sideslopes within a reasonable period of time. (d) Paved Areas If a portion of a detention basin area is to be paved for parking or recreational purposes, the paved surface shall be placed at the highest possible elevation within the storage area. Paved areas shall have minimum grades of 1%and shall be restricted to storage depths of nine in. maximum. (9) Retention Ponds (a) Shoreline protection shall be provided to prevent erosion from wave action. (b) The margins of all retention ponds shall be provided with an underwater shelf having a maximum slope of four to one (25%) to a depth of three ft. Other safety treatments maybe allowed as approved by the City Manager. (c) To minimize growth of aquatic vegetation, the water depth beyond the underwater shelf shall be at least three to four ft. (d) If possible, a method shall be provided to drain retention ponds by gravity flow to allow cleaning and maintenance. iv. Joint Drainage Facilities Joint development of drainage facilities is encouraged, especially where individual developments cannot feasibly provide on-site facilities. The City may participate in joint drainage facilities. v. Detention Options Options for meeting detention requirements include on-site detention areas,joint detention areas shared by several developers, off-site detention in City detention areas shared by several developers, off-site detention in City detention areas, or off-site detention in areas provided by the applicant. vi. Stormwater Management Measures Examples of stormwater management measures include: French drains, porous pavement, precast concrete lattice blocks and bricks, grass lined channels, dry wells, seepage ditches, and detention areas. Applicant Response: The proposal is for a major development; therefore, this section applies. Section 13 contains a Stormwater and Drainage Report which outlines how stormwater will be detained on site in a fenced stormwater detention pond. The stormwater plan conforms to the City of Lake Oswego Surface Water Management Design Workbook,December 2003 Edition. An extended dry detention pond will provide water quality treatment and detention for the majority of the new impervious areas created on site. The extended dry detention pond is sized for the total new impervious area of the site. A small filter strip will be provided adjacent to the access road downstream of the extended dry detention pond to provide some treatment of the access road area that is not routed through the pond. The water quality facilities for this development meet the design requirements to remove 65 0 Lake Oswego•Tigard Water Partnership Oaring water•connecting communitfes 96 45 percent phosphorous for the runoff from 100 percent of the newly constructed impervious surfaces. The proposed stormwater system complies with the drainage standards of this section. UTILITIES (LOC 50,06.008) 1. APPLICABILITY All development requiring connection to utilities. 2. DEVELOPMENT REVIEW The review procedures for utilities are located in LOC 50.07.004.11, Utilities. 3. STANDARDS FOR APPROVAL a. Utilities Required The following utilities, whether on or off site, shall be provided to all development in the City of Lake Oswego, in accordance with City Engineering Division's policies, design standards, technical specifications and standard details: i. Sanitary sewer systems; ii. Water distribution systems; ill, Sidewalks and any special pedestrian ways and bicycle paths; iv. Street name signs; v. Traffic control signs and devices; vi. Street lights, which shall be served from an underground source of power; vii. Underground utility and service facilities, as required; viii. Streets; ix. Provision for underground T.V. cable. The City Manager may require that utility designs be prepared by a registered engineer. b. Easements or right-of-way for utilities and associated and related facilities shall be provided by the property owner. Easements for anticipated future utilities or extensions may be required by the City Manager. c. Sanitary sewers shall be installed to serve the development and to connect the development to existing mains. d. Design shall take into account the capacity and grade to allow for desirable future extension beyond the development, and where required by the City Manager, extended to the upstream property line to allow for such future extension. e. All sanitary sewers and appurtenant structures shall be designed and constructed in conformance with City Engineering Division's policies, design standards, technical specifications and standard details, and shall include, but not be limited to, such items as: i. Pipe size and materials; ii. Manholes; iii. Cleanouts; �, Lake Oswego•Tigard Water Partnership shoring water,connecting communises 97 Lake Oswego 46 Revised Waluga Reservoir 2-Land Use Application iv. Backfill requirements; v. Service laterals. f All development shall be served by service lines, main water lines and fire hydrants which are connected to City mains or the water mains of water districts which provide service within the City. g. Design of water system improvements shall take into account provision for extension beyond the development to adequately grid or loop the City system. h. One water service line shall be provided to each lot in a development, or if the development does not include lots, to each building in the development. Each structure with plumbing shall connect to the water system. The system shall be designed to supply fire flow requirements of LOC Chapter 45. Applicant Response: The WR2 will require utility service;therefore, this section applies. Section 13 contains a Stormwater and Drainage Report which outlines how stormwater will be managed on-site and detained in a fenced stormwater detention pond. The stormwater plan conforms to the City of Lake Oswego Surface Water Management Design Workbook,December 2003 Edition. A small filter strip will be provided adjacent to the access road downstream of the extended dry detention pond to provide some treatment of the access road area that is not routed through the pond. Section 18 provides details on the location of utility lines in East Waluga Park that will serve the project area. Electrical service will be provided from Quarry Road to the reservoir site. The FWP and the WR2 do not require sanitary sewer service. The proposal will provide an on-site walking area for maintenance personnel and the public visitor. The proposal will not create new streets and will only generate an average of 1-2 maintenance vehicle trips per week; therefore, sidewalks and traffic control are not warranted. For these reasons the proposal provides adequate utility service. CONDITIONAL USE PERMITS (LOC 50.07.005) 1. INTENT AND PURPOSE; EFFECT OF USE UNDER PRIOR CODE WHICH IS CONDITIONAL UNDER CURENT CODE a. A conditional use is an activity which is permitted in a zone but which, because of some characteristics which are not entirely compatible with other uses allowed in the zone, cannot be permitted outright. A public hearing and review of the proposed conditional use by the hearing body and the imposition of conditions, if necessary, is intended to ensure that the use proposed will be as compatible as practical with surrounding uses, and is in conformance with the purposes and requirements of the district, if any, and with other applicable criteria and standards of the City. b. An alteration in a use which was classified by the prior zoning code as a permitted use that is by this Code classified as a conditional use shall conform to the requirements of this Code. c. A use that existed before December 16, 1982, which is permitted only upon receiving a conditional use permit under the terms of this Code, is not a nonconforming use, but is without further action to be considered a conforming use. Applicant Response: OP\ Lake Oswego•Tigard Water Partnership sharing water•connecting communities 98 47 The applicant agrees that the WR2 and FWP are major utilities; therefore, a Conditional Use Permit (CUP) is required in the R-7.5 zone 2. APPLICATION Application for a conditional use shall be made on forms provided by the City for that purpose and shall be signed by the property owner, or shall be accompanied by the owner's written authorization. The application shall include: a. Name, address and telephone number of applicant. b. Map number and/or subdivision block and lot. c. Narrative concerning the proposed request explaining how the applicable criteria are complied with. d. Copy of deed, signed earnest money agreement, or other document showing ownership or interest in property. e. Vicinity map. f. Comprehensive Plan and zoning designations. g. One map showing existing uses and a second map drawn in the same scale showing proposed development, placement of lot lines, etc. A survey map is not required. h. Detailed plans for the specific project(working drawings are not required). i. Names and addresses of property owners whose property is within 300 ft. of the applicant's property which is the subject of the application or contiguous property owned by the applicant. j. Proof of payment of the applicable fees. k. Additional drawings, topographic surveys, photographs or other material necessary to understand the proposed use, and of its relationship to surrounding properties, may be required. The City Manager shall determine the completeness of an application. Variances may be applied for and considered concurrently with a conditional use application. All notifications for the conditional use application or hearing shall specifically state that variances have been applied for and clearly describe the proposed variances in terms understandable to a person of ordinary intelligence. Applicant Response: The full application package includes all required materials and fees. 3. AUTHORIZATION TO PERMIT OR DENY CONDITIONAL USES a. An application for a conditional use shall be allowed if L The requirements of the zone are met; and ii. Special conditions found in LOC 50.03.003.1.b, 50,03.003.2.a through 50.03.003.2.c, 50.03.003.3.a through 50.03.003.3.d, 50.03.003.3.f, and 50.03.003.4.a and 50.03.003.4.d, if applicable, are met;and iii. The site is physically capable of accommodating the proposed use; and • Lake Oswego•Tigard Water Partnership Sharing water•connecting commwnlrres 99 Lake Oswego 48 Revised Waluga Reservoir 2-Land Use Application iv. The functional characteristics of the proposed use are such that it can be made to be reasonably compatible with uses in its vicinity. b. In permitting a new conditional use, or the modification of an existing conditional use, the hearing body, or the City Manager in the case of a minor modification, may impose conditions which are suitable and necessary to assure compatibility of the proposed use with other uses in the vicinity. These conditions may include, but are not limited to: i. Limiting the manner in which the use is conducted, by restricting the time an activity may take place and by minimizing such environmental effects as noise, vibration, air pollution, glare and odor. ii. Establishing a special yard, setback, lot area or other lot dimension. iii. Limiting the height, size or location of a building or other structure. iv. Designating the size, number, location and design of vehicle access points. v. Increasing roadway widths, requiring street dedication, and/or requiring improvements within the street right-of-way. vi. Designating the size, location, screening, drainage, surfacing or other improvement of a parking area or truck loading area. vii. Limiting or otherwise designating the number, size, location, height and lighting of signs. viii. Limiting the location and intensity of outdoor lighting, requiring its shielding, or both. ix. Requiring berming, screening or landscaping and designating standards for its installation and maintenance. x. Designating the size, height, location and materials for fences. xi. Protecting and preserving existing trees, soils, vegetation, water resources, wildlife habitat or other significant natural resources. xii. On-and off-site public improvements. The number of residential units allowed by the provisions of this Code on a site may be reduced only if it is found that development to that number will result in a violation of the standards stated in LOC 50.07.005.3.a. Applicant Response: The site is physically capable of accommodating the proposed use. WR1 is a permitted reservoir that has a larger diameter than the proposed WR2. The WR2 is designed with a smaller footprint but is taller than WR1. The WR2 will be painted green to blend into the forested area. The FWP will be completely underground and will not be visible except for necessary grade-level manholes. The applicant will plant native vegetation to restore the disturbed areas to current or better condition. Over 50 percent of the site will be set aside as an RCPA. Gated entryways will limit vehicular access into the site; thereby, protecting the quiet character of the area. Maintenance crews will visit the site 1 to 2 times a week. The site will provide maintenance accessways, and the applicant acknowledges that these same accessways may be used by the public, thus limiting the potential for undesirable activity. The operation of the facilities will generate no discernible noise at the property line; thereby, helping to maintain the quiet character of the residential neighborhood. The applicant is requesting only one minor variance to the private driveway standards which will result in less cut and fill and fewer trees removed. The applicant has proposed tree protection measures,landscaping and will plant a significant number of trees and understory vegetation the implementation of which may be troLake Oswego•Tigard Water Partnership sharing water•connecting communities 100 49 made a condition of approval. For these reasons, the proposal is planned to be compatible with the character of the neighborhood. 4. ABANDONMENT OF CONDITIONAL USE PERMIT a. A conditional use permit shall be void after two years if 15%of the structural construction has not occurred pursuant to the approval. The two-year limitation does not apply to permits issued for major public facilities. b. If a use operating pursuant to a conditional use permit is discontinued for a period of at least six months, any further use of the property shall conform to the requirements of this Code. Such a conditional use shall not operate without first obtaining a new conditional use permit. Applicant Response: Because the proposal is for a major public facility the two-year limitation does not apply. The applicant anticipates that the WR2 project will commence in the May of 2014 and end in August 2015;the anticipated construction period for the FWP is November 2013 through February 2014. See Section 9, Construction Management Plan. LOC 50.03.003. USE SPECIFIC STANDARDS 3. CONDITIONAL USE STANDARDS FOR PUBLIC, INSTITUTIONAL,AND CIVIC USES, INCLUDING STANDARDS FOR TELECOMMUNICATION FACILITIES. b. Major Public Facilities and Institutional Uses Not Covered by Other Specific Standards i. Utilities, streets or other necessary improvements to the public facility or institutional use shall be provided by the agency constructing the use. ii. When located in a residential zone, access should be located on a collector street if practical. If access is to a local residential street, consideration of a request shall include an analysis of the projected average daily trips to be generated by the proposed use and their distribution pattern, and the impact of the traffic on the capacity of the street system which would serve the use. A traffic study will be required of the applicant to identify the projected average daily trips to be generated and their distribution pattern. Uses which are estimated to generate fewer than 20 trips per week shall be exempted from the requirements of this subsection. iii. When located in a residential zone, lot area shall be sufficient to allow required yards which are at least two-thirds the height of the principal structure. iv. The height limitation of a zone maybe exceeded to a maximum height of 50 ft. v. Noise generating equipment shall be sound buffered when adjacent to residential areas. vi. Lighting shall be designed to avoid glare on adjacent residential uses. vii. Levels of operations shall be adjusted to avoid conflict with adjacent uses where practical. Applicant Response: The project will generate 1-2 maintenance trips a week; therefore, the project will not generate a significant volume of traffic requiring additional mitigation. Parking is limited to the maintenance vehicles and space is provided on-site to accommodate two vehicles at the turnaround. The proposed WR2 will be 49 feet tall which is less than the 50-foot maximum height limitation. The primary access to the site will from Carman Drive, a major collector,via a gated private driveway. Lake Oswego•Tigard Water Partnership sharing water•connecting tammunities 101 Lake Oswego 50 Revised Waluga Reservoir 2--Land Use Application The current access from Parkhill will be gated. The application contains a noise analysis. The WR2, in response to neighborhood requests,will be buffered to limit noise. The site will not be lighted at night. Public utilities necessary to serve the reservoir function are illustrated in Section 18. All setbacks exceed the minimum requirements. Subsection (b)(iii) requires that the lot area lot area shall be sufficient to allow required yards which are at least two-thirds the height of the principal structure. The WR2 tank is 49 feet tall; therefore, the required setback must be 32.34 feet. The smallest yard, as shown in Section 17,Site Plan is 35 feet 10.5 inches. Consequently, the proposal complies with the requirements of this section. EXEMPT DEVELOPMENT (LOC 50.07.003.12.A.III) 12. EXEMPT DEVELOPMENT a. Classification Exempt developments include: N. Construction of a structure that does not require a building permit. b. Development Review No development permit pursuant to this Code is required for exempt development. Applicant Response: The City of Lake Oswego classifies the FWP through the RC district in East Waluga Park as exempt development. Consistent with its October 30,2012 letter, staff concluded that the FWP is still required to comply with the criteria listed in LOC 50.07.004.8.c,normally a ministerial review. The applicant elects to demonstrate compliance with this section as part of this CUP/DR/RCPA application. (See response to LOC 50.07.004.8.c.) ADDITIONAL SUBMISSION STANDARDS (LOC 50.07.004.8.C) 8. SENSITIVE LANDS OVERLAY DISTRICTS c. Environmental Review An applicant fora development subject to LOC 50.05.010.2 shall comply with: i. For exempt development under LOC 50.07.003.12 occurring within an RC or RP district or its associated construction setback, the applicant shall: (1) Comply with the applicable RP district or RC district development standards (LOC 50.05.010.5.c or LOC 50.05.010.6.c); (2) Comply with the Construction Standards (LOC 50.05.010.4.d) to the satisfaction of the City Manager; (3) Meet the steps of avoidance and minimization as stated in LOC 50.05.010.4.f, and (4) File a mitigation plan that complies with the standards of LOC 50.05.010.4.g for the review and approval of the City Manager. Applicant Response: re Lake Oswego•Tigard Water Partnership sharing water connecting communities 102 51 The application contains a Resource Conservation Protections Area Report (Section 6) and a Delineation and Mitigation Report (Section 7) which were discussed earlier in this narrative. The plans detail avoidance and minimization procedures and detail proposed construction standards. Therefore, the proposal is consistent with this section. TREE REMOVAL (LOC 55.02) PURPOSE (55.02.010) The purpose of this chapter is to regulate the removal of trees and prescribe preventative protection measures to avoid damage to trees during site development in order to preserve the wooded character of the City of Lake Oswego and to protect trees as a natural resource of the City. Applicant Response: The applicant is proposing to remove trees greater than 5 inches DBH; therefore, this Article applies to the proposal. TREE REMOVAL IN CONJUNCTION WITH MAJOR OR MINOR DEVELOPMENT PERMIT(55.02.035) 1. If a Major or Minor Development Permit applied for pursuant to LOC 50.07.003.15 or 50.07.003.14, respectively, would require or result in tree removal and/or a tree cutting permit as defined in this Chapter, compliance with LOC 55.02.080 shall be a criterion of approval of such development permit. Tree removals in conjunction with a Major or Minor Development Permit shall be considered in conjunction with such permit and shall be subject to the application, notice, hearing and appeal procedures applicable to the proposed Major or Minor Development pursuant to LOC 50.07.003.3.e, 50.07.003.7.a, 50.07.003.15.b, and 50.07.003.7. The required Notice for Major or Minor Developments that would require or result in tree removals shall include a site plan indicating the location of any trees proposed for removal on the subject site. The proposed trees shall also be flagged with yellow flagging tape on site. Such flagging shall be maintained until a final decision on the proposal is rendered. The remaining, notice, hearing and appeal procedures in LOC Chapter 55 shall not apply to tree removals considered in conjunction with a Major or Minor Development request. Subsequent tree removals that have not been reviewed through either Major or Minor Development procedures shall be reviewed as provided in this Chapter. Applicant Response: The applicant will comply with LOC 55.02.080. PERMIT CLASSIFICATIONS AND REVIEW PROCEDURES(55.02.042) A person who desires to remove a tree shall first apply for and receive one of the following tree cutting permits before tree removal occurs: 1. Type 1 Permit is required for:... 2. Type II Permit: a. A Type iI permit is required prior to any tree removal application that does not qualify in issuance as a Type I permit, Dead Tree Removal Permit, Hazard Tree Removal Permit,0� Lake Oswego•Tigard Water Partnership, sharing water.connecting communities 103 Lake Oswego 52 Revised Waluga Reservoir 2-Land Use Application Emergency Permit, Verification Permit, Topping Permit, or Invasive Tree Species Removal Permit as described in this section. b. Type II permits shall be reviewed and approved by the City Manager pursuant to LOC 55.02.080(approval criteria) and 55.02.082 (notice requirements). • Applicant Response: The applicant is requesting a Type II permit. CRITERIA FOR ISSUANCE OF TYPE II TREE CUTTING PERMITS(55.02.080) An applicant for a Type II tree cutting permit shall demonstrate that the following criteria are satisfied. The City Manager may require an arborist's report to substantiate the criteria for a permit. 1. The tree is proposed for removal for landscaping purposes or in order to construct development approved or allowed pursuant to the Lake Oswego Code or other applicable development regulations. The City Manager may require the building footprint of the development to be staked to allow for accurate verification of the permit application; 2. Removal of the tree will not have a significant negative impact on erosion, soil stability, flow of surface waters, protection of adjacent trees, or existing windbreaks; and 3. Removal of the tree will not have a significant negative impact on the character, aesthetics, or property values of the neighborhood. The City may grant an exception to this criterion when alternatives to the tree removal have been considered and no reasonable alternative exists to allow the property to be used as permitted in the zone. In making this determination, the City may consider alternative site plans or placement of structures or alternate landscaping designs that would lessen the impact on trees, so long as the alternatives continue to comply with other provisions of the Lake Oswego Code. 4. Removal of the tree is not for the sole purpose of providing or enhancing views. 5. The City shall require the applicant to mitigate for the removal of each tree pursuant to LOC 55.02.084. Such mitigation requirements shall be a condition of approval of the permit. Applicant Response: The applicant will remove regulated trees to construct the WR2,a stormwater facility,and an overflow detention basin. No regulated trees will be removed as part of the FWP construction activity or operation. The WR2 site contains 526 regulated trees 5 inches DBH or greater on-site. Of that number, 356 regulated/non-exempt are proposed for protection in the WR2,site. Project development will remove 170 regulated non-exempt trees from the WR2 site. No removals are proposed for regulated/non-exempt trees in Waluga Park. All trees within Waluga Park will be protected from construction activities (See Section 5,Tree Inventory and Tree Protection Plan and Section 17, Figures 7-12,Tree removal and protection plans.) All trees to be removed are done so in order to construct a needed public facility that is allowed under the City's code and is necessary to implement the City's Comprehensive Plan. ro, Lake Oswego•Tigard Water Partnership shmfng water.connecting communities 104 53 Removal of these trees will not have a significant negative impact on erosion, soil stability, flow of surface waters,protection of adjacent trees,or existing windbreaks because the applicant has provided an erosion control plan (Section 8) consistent with City standards.The applicant will also designate an RCPA around the disturbed area.The applicant's seismic analysis (Section 12) determined that site development can be accomplished without impacting soil stability.The Stormwater Management Plan (Section 13) complies with City requirements and will adequately manage the flow of storm water. The City determined that there is a functional need to connect WR2 with WR1 with pipeline. The flat upper portion of the site does not have significant geotechnical problems. The site design concentrates the utility facilities and site impacts in the site interior rather than at the site boundaries; thereby, screening the facility for the abutting neighbors. The majority of the RCPA maintains a depth of 150 feet;thereby reducing the occurrence of thin stands of trees vulnerable to blow-downs. The applicant will designate an RCPA over 50.2 percent of the site which is consistent with the goal of further integrating the facility with the neighborhood. To the maximum extent practicable, the proposal provides setbacks that help minimize disturbance to adjacent properties. The nearest home to the WR2 is 150 feet away. The RCPA maintains a contiguous canopy with the RC district south of the site. (See Section 6,RCPA Report.) For these reasons, the proposed WR2 will not have a significant negative impact on the character, aesthetics, or property values of the neighborhood. Regulated trees will be removed to facilitate construction and operation of a needed public utility. No trees will be removed for the sole purpose of enhancing views since the site will not be occupied.The applicant has provided a mitigation plan consistent with LOC 55.02.084. For these reasons the proposal satisfies LOC 55.02.080. MITIGATION REQUIRED(55.02.84) 1. An applicant shall provide mitigation for any tree permitted for removal, with the exception of the following: a. Dead trees; b. Hazard trees; c. Trees that are 10 inches or less in diameter removed from developed single-family lot; d. Invasive Tree Species, except as provided in subsection (2) of this section. 2. Mitigation for Invasive Tree Species removal is required when: a. The removal is from a public right-of-way; b. The removal is from a Resource Conservation or Resource Protection Overlay District; or c. The tree was planted as part of a previously approved landscape or mitigation plan. 3. The mitigation requirement shall be satisfied as follows: a. Replanting on Site. The applicant shall plant, for each tree removed: i. invasive Tree Species Removal Permit: Removal from a public right-of-way or from an approved landscape plan, either a minimum two-inch caliper deciduous tree or a six- to eight-foot-tall evergreen tree for each tree removed. Removal from a Resource Conservation or Resource Protection Overlay District, either a minimum one-half-inch caliper deciduous tree or a minimum two-foot-tall evergreen tree, 0 Lake Oswego •Tigard Water Partnership sharing water.connecting communities 105 Lake Oswego 54 Revised Waluga Reservoir 2—Land Use Application ii. Other Tree Cutting Permits: Either a minimum two-inch caliper deciduous tree or a six-to eight-foot-tall evergreen tree for each tree removed. The tree shall be planted according to the specifications in the City Tree Planting and Maintenance Guidelines as approved by the City Council. b. Replanting off Site. if in the City's determination there is insufficient available space on the subject property, the replanting required in subsection (1) of this section shall occur on other property in the applicant's ownership or control within the City, in an open space tract that is part of the same subdivision, or in a City owned or dedicated open space or park. Such mitigation planting is subject to the approval of the authorized property owners. If planting on City owned or dedicated property, the City may specify the species and size of the tree. Nothing in this section shall be construed as an obligation of the City to allow trees to be planted on City owned or dedicated property. c. Payment in Lieu of Planting. If in the City's determination no feasible alternative exists to plant the required mitigation, the applicant shall pay into the tree fund an amount as established by resolution of the City Council. Applicant Response: The applicant has submitted a Delineation and Mitigation Report (Section 7) which satisfies all mitigation requirements. All replanting will be accomplished on-site consistent with LOC 55.02.84; the applicant is not requesting a payment in-lieu. Therefore, the proposal complies with this section. TREE PROTECTION (LOC 55.08) APPLICABILITY(55.08,010) This article is applicable to any ministerial, minor, or major development. TREE PROTECTION PLAN REQUIRED(55.08.020) 1. A Tree Protection Plan approved by the City Manager shall be required prior to conducting any development activities including, but not limited to clearing, grading, excavation, or demolition work on a property or site, which requires ministerial, minor, or major development approval. 2. In order to obtain approval of a Tree Protection Plan; an applicant shall submit a plan to the City, which clearly depicts all trees to be preserved on the site. The plan must be drawn to scale and include the following: a. Location, species, and diameter of each tree on site and within 15 feet of the site; b. Location of the drip line of each tree; c. Location of existing and proposed roads, water, sanitary and storm sewer, irrigation, and other utility lines/facilities and easements; d. Location of dry wells and soakage trenches; e. Location of proposed and existing structures; f. Grade change or cut and fill during or after construction; g. Existing and proposed impervious surfaces; h. identification of a contact person and/or arborist who will be responsible for implementing and maintaining the approved tree protection plan;and ,\ Lake Oswego•Tigard Water Partnership sharing water'connecting communities 106 55 i. Location and type of tree protection measures to be installed per LOC 55.08.030. 3. For minor or major development, the Tree Preservation Plan shall be prepared by an arborist and shall include an inventory of all trees on site, their health or hazard condition, and recommendations for treatment for each tree. Applicant Response: Section 5 contains a Tree Inventory and Protection Plan in conformance with the requirements of this section. TREE PROTECTION MEASURES REQUIRED(55.08.030) 1. Except as otherwise determined by the City Manager, all required tree protection measures set forth in this section shall be instituted prior to any development activities, including, but not limited to clearing, grading, excavation or demolition work, and shall be removed only after completion of all construction activity, including landscaping and irrigation installation. 2. Chain link fencing, a minimum of 6 feet tall with steel posts placed no farther than ten feet apart, shall be installed at the edge of the tree protection zone or dripline, whichever is greater, and at the boundary of any open space tracts or conservation easements that abut the parcel being developed. 3. The fencing shall be flush with the initial undisturbed grade. 4. Approved signs shall be attached to the chain link fencing stating that inside the fencing is a tree protection zone, not to be disturbed unless prior approval has been obtained from the City Manager and arborist for the project. 5. No construction activity shall occur within the tree protection zone, including, but not limited to dumping or storage of materials such as building supplies, soil, waste items, or parked vehicles or equipment. 6. The tree protection zone shall remain free of chemically injurious materials and liquids such as paints, thinners, cleaning solutions, petroleum products, and concrete or dry wall excess, construction debris, or run-off. 7. No excavation, trenching, grading, root pruning or other activity shall occur within the tree protection zone unless directed by an arborist present on site and approved by the City Manager. Applicant Response: A Tree Inventory and Protection Plan (Section 5) and Construction Management Plan (Section 9A) are provided in conformance with the requirements of this section. V. LAKE OSWEGO COMPREHENSIVE PLAN POLICIES Lake Oswego staff identified the following comprehensive plan policies as being applicable to the proposed development. See Section 3,Pre-application Conference Notes. Lake Oswego•Tigard Water Partnership shoring water•connecting communities 107 Lake Oswego 56 Revised Waluga Reservoir 2-Land Use Application Goal 2: Land Use Planning Policies Section 1: Land Use Policies and Regulations Policy 1. Require development to be adequately served by the full range of public facilities and services, including: water, sanitary sewer, transportation facilities, fire and police protection, parks, open space, and recreation facilities, surface water management and storm drainage facilities, and schools. Services shall be available or committed prior to approval of development. Applicant Response: The proposed WR2 and FWP will be served by electricity (see responses to utility requirements). Fire protection access is available via Carman Drive and Parkhill. The applicant has prepared a Stormwater Drainage Report which complies with Lake Oswego requirements. The proposed utility facilities do not require sanitary sewer service, parks and open space, or schools to operate. Therefore, the proposal is consistent with Goal 2, Section 1,Policy 2. Policy 5. Maintain residential neighborhoods at existing zone and plan density designations, except where: a. Changes to higher residential density designations are necessary to be consistent with development on the subject property at the time of this policy's adoption; or, b. An applicant demonstrates that a proposed zone/plan density change complies with the following criteria:[PA 4-97/ZC 3-97-1239; 10/21/97] i. If the property is subject to an adopted neighborhood plan, the applicant shall comply with any special zone/plan density change criteria that maybe required by the neighborhood plan; and ii. The applicant shall comply with all Comprehensive Plan Policies and Goals applicable to zone/plan density changes. Such applicable Goals and Policies include, but are not limited to the following: A. A proposed plan/map density change shall not allow development that would exceed the capacity of planned public facilities and services[Goal 2, Section 1, Policy 11; Goal 2 Section 1 Policy 14(b)]and shall be appropriately related to the capacity of such public facilities, especially residential streets[Goal 10, Policy 6]; B. A proposed plan/map density change shall be appropriately located in relation to the functional classification of the access streets[Goal 2, Section 1 Policy 14(a)]; C. Density changes shall be consistent with adjacent land uses or can be made compatible through the ability to buffer, screen and blend dissimilar land uses[Goal 2, Section 1, Policy 14(c)];; D. A proposed plan/map density change shall address the effect of the change on overall land supply and shall comply with the Metro Housing Rule (OAR 666-07-000) [Goal 2, Section 1 Policy 14(d)]; E. The applicant shall demonstrate a public need for the proposed plan/map density change and that the proposed change will best meet the need when compared to alternatives[Goal 2, Section 1 Policy 14(e)]; F. The applicant shall demonstrate that the proposed density is appropriate for the location given public facilities, natural resources and hazards, road or transit access fippiLake Oswego•Tigard i Water Partnership sharing water,connecting comtnunfries 108 57 and proximity to commercial areas and employment concentrations[Goal 7, Policy 2; Goal 10, Policies 1 and 3]; G. A plan/map residential density change to high density(R-O, R-2 and R-3) shall be located within walking distance to bus lines or transit centers[Goal 10, Policy 8]and, where feasible, shall be located within close proximity to employment opportunities, shopping, parks and transit[Goal 10, Policy 11]; and H. The applicant shall demonstrate that development allowed by the proposed lone/map residential density change will be compatible with the surrounding neighborhood, or can be made compatible pursuant to development review of an individual application pursuant to the criteria contained in the Zoning and Development Codes and Development Standards. Applicant Response: The proposal to construct a major utility will not add residential units and will not alter the density of the R-7.5 neighborhood. Therefore, the proposal is consistent with this policy. Policy 14. Ensure that amendments to the Comprehensive Plan and Zoning Map are subject to specific locational criteria and other standards, including: a. Location in relation to arterial or collector streets; b. Capacity of public facilities and services; c. Consistency with adjacent land use patterns or ability to buffer, screen and blend dissimilar land uses; d. Conformance with Comprehensive Plan goals and policies, applicable and adopted neighborhood plans and applicable land use regulations; e. Effect on overall land supply, and the Metro Housing Rule (OAR 660-07-000); f. Demonstration of public need for the change and that the proposed amendment will best meet identified public need versus other available alternatives; and, • g. Other criteria determined necessary to ensure conformance with the Comprehensive Plan. Applicant Response: The applicant is not proposing to amend the Comprehensive Plan. Therefore, the proposal is consistent with this policy. Policy 24. Comprehensively evaluate proposed land use actions to determine the full range of potential negative impacts and require applicants to provide appropriate solutions prior to approval. Applicant Response: The applicant conducted an alternative analysis that weighed the need to enhance the City's water supply system, consistent with the Comprehensive Plan,and minimize impacts on both the residential neighborhood and protected natural resources in the area. The proposal attempts to balance these needs by complying with applicable development standards; avoiding impacts to natural resources,particularly trees; and providing extensive screening and buffering between the WR2 and the neighborhood. Therefore, the proposal is consistent with this policy. I, Lake Oswego•Tigard Water Partnership rhaing water•cognecring roman=inures 109 Lake Oswego 58 Revised Waluga Reservoir 2-Land Use Application Policy 25. Require developers to bear the burden of proof to demonstrate how proposed land use actions are consistent with the Comprehensive Plan and applicable codes and land use regulations. Applicant Response: The land use narrative and supporting technical materials contained in the application provide substantial evidence that the proposal is consistent with the Comprehensive Plan and development regulations. Therefore,the proposal is consistent with this policy. Policy 26. Require developers, prior to application for permits, to discuss development proposals with neighborhood groups, residents, and City staff. Applicant Response: The applicant exceeded its code obligation to discuss the proposal with the City and neighborhoods. The applicant conducted an extensive outreach effort and met with interested neighborhood residents on numerous occasions and developed a Good Neighbor Plan,in conjunction with the neighbors,in an effort to be responsive to neighborhood concerns and needs.Therefore,the proposal is consistent with this policy. Goal 5: Open Spaces, Historic and Natural Areas Section 1: Fish and Wildlife Habitat Policy 1. Preserve and restore natural resources and lands which are important to fish and wildlife habitat including: a. Wetlands, water bodies, stream corridors and associated vegetation; b. The Willamette Greenway and the Urban Service Boundary's(USB) floodplains and tloodways, c. Surface water and groundwater quality; d. Tree cover and understory vegetation, including downed trees and nesting snags; and, e. Upland areas, especially forested hillsides. Applicant Response: No wetlands or waterways occur on the reservoir parcel site,nor do any buffers from offsite features extend into the reservoir site. Therefore, no RP areas are present WR2 site. East Waluga Park contains a large RC Tree Grove,which extends into the reservoir parcel site. The FWP study corridor running through the park crosses through this tree grove. The City identifies a large wetland area along the west side of the park as RP wetlands as well as an RP stream corridor along the south side of the wetland. Based on City mapping and the project wetland delineation field work, the RP wetland area is approximately 190 feet from the edge of the FWP corridor study area and, therefore, it and any associated buffers are not included in the project study corridor. The application materials contain an evaluation of tree cover and understory and propose strategies to protect trees consistent with City regulations. (See Sections 5, 6,and 7). Therefore,the proposal is consistent with this policy. 0 Lake Oswego-Tigard Water Partnership sharing water•connecting immunities 110 59 Policy 3. Preserve and restore fish and wildlife habitat through: a. Land and habitat management practices on public and private lands; and, b. Providing linkages to various habitats for access and safe passage of wildlife to food, water, nesting and cover. Applicant Response: The project area does not contain recognized fish habitat. Policy 9. Ensure linkage among wildlife habitat areas as a key component of the Lake Oswego parks, open space, and surface water management systems. Applicant Response: The proposal provides significant tree protection measures and includes an extensive mitigation and planting plan that will provide benefit to local wildlife, consistent with the open space and parks needs of the City. Therefore, the proposal is consistent with this policy. Policy 10. The City shall emphasize protection rather than mitigation of fish and wildlife habitat functions and values. Applicant Response: The proposal will result in the protection of 50.2 percent of the site,which will provide food, cover and a travel corridor for wildlife. Therefore, the proposal is consistent with this policy. Section 2: Vegetation Policy 1. Protect, restore, and maintain existing vegetation which has environmental, wildlife habitat and aesthetic qualities, including tree groves and forested hillsides and vegetation associated with wetlands, stream corridors, and riparian areas. Applicant Response: The application contains a Tree Inventory and Protection Plan, an RPCA report, and a Delineation and Mitigation report that identify strategies for protecting and restoring vegetation and tree groves. Therefore, the proposal is consistent with this policy. Policy 3. Require developers to maximize the preservation of trees and to maintain and enhance the cohesive quality of tree groves through: a. Site design and construction methods; and, b. Open space dedication of areas which contain these resources. Applicant Response: The application materials demonstrate that the applicant has developed a site plan and construction plan that minimizes impacts to trees. Additional plantings will help to ensure the cohesiveness of the existing tree groves. (See Section 5.) Therefore, the proposal is consistent with this policy. illLake Oswego •Tigard Water Partnership sharing water connecting communities 111 Lake Oswego 60 Revised Waluga Reservoir 2-Land Use Application Policy 5. Ensure vegetation is maintained, protected, and restored through: a. Regulation of tree removal; b. Conditions of development approval; c. Monitoring of development to ensure compliance with the City's regulations and conditions of development approval; and, d. Enforcement of regulations. Applicant Response: The Tree Inventory and Protection Plan in Section 5 identifies significant trees on-site.The site plan illustrates how impacts to trees have been minimized. The requested variance to the private driveway slope standards will result in less cut and fill and fewer trees removed. The Delineation and Mitigation Report (Section 7) identifies a comprehensive strategy for mitigating impacts to treed areas and provides strategies for additional plantings. (See pages 7-13 responding to LOG 50.05.010.4.f-g.) Therefore, the proposal is consistent with this policy. Policy 11. Design and construct public works projects to preserve existing vegetation to the extent practical. Applicant Response: More than 80 percent of the site will be vegetated at the conclusion of the construction activity. Therefore, the proposal is consistent with this policy. Policy 12. Protect and enhance vegetation resources within rights-of-way and other public lands through measures such as: a. Regulations to protect public trees; b. The provision of adequate right-of-way to ensure sufficient space for tree planting; and, c. An ongoing planting and maintenance program for trees and other vegetation in public rights- of- way, open spaces, and parks. Applicant Response East Waluga Park is public land. The pipeline route through the Park was selected to avoid impacts to trees. The proposed development is consistent with adopted local tree protection regulations. The Mitigation Plan proposes to revegetate portions of the site consistent with City regulations. Therefore, the proposal is consistent with this policy. Section 6: Open Space Policy 1. Establish an open space network within and adjacent to the Urban Services Boundary (USB) which: a. Preserves natural areas in an intact or relatively undisturbed state; b. Provides for maintenance of scenic resources and distinctive aesthetic qualities such as views of Mount Hood, Oswego Lake, the Willamette River, the Tualatin Valley and forested ridgelines; tro Lake ater OswegoPartners•Tihigard W sharing water conn&Jtng cotamunip des 112 61 c. Preserves areas valued for community identity benefits such as stands of trees and rock outcroppings; d. Protects the public from natural hazards, such as areas subject to flooding, geological instability, or high erosion potential; e. Provides buffers between incompatible uses; f. Preserves fish and wildlife habitat; and, g. Provides land which meets the open space and recreation needs of the community. Applicant Response: East Waluga Park is an element of the City's park and open space network that provides open space, recreation, and vegetated wildlife habitat. Therefore, the proposal is consistent with this policy. Policy 2. Preserve open space through dedication, deed restrictions, covenants, or other methods as conditions of development approval which, when possible, shall be consistent with the City's parks, open space, and pathways plans. Applicant Response: Approximately 50.2 percent of the site will be protected as an RPCA as a result of this development. Therefore, the proposal is consistent with this policy. Policy 3. Promote an open space network that: a. Maintains the existing tree canopy; b. Provides aesthetic and visual relief from urban development; c. Provides opportunities for pedestrian and bicycle linkage; and, d. Preserves essential natural system?. Applicant Response: 50.2 percent of the site will be protected as an RCPA; thereby, protecting tree canopy and providing an aesthetic and visual relief for neighboring properties. The proposal provides for pedestrian access along the private driveway. Approval of the private driveway slope variance will result in less cut and fill and the removal of fewer trees; thereby, preserving essential natural systems. The applicant will protect open space land consistent with LOC 50.05. Therefore,the proposal is consistent with this policy. Policy 4. The City shall emphasize protection rather than mitigation of open space functions and values. Applicant Response: 50.2 percent of the WR2 site shall be preserved as an RCPA. The applicant has demonstrated compliance with LOC 50.05,balancing protection with mitigation as required by the City of Lake Oswego. Policy 9. Consider the following resources eligible for protection:[1C 1-95-1204 Revised; 5120197] a. Stream corridors and natural drainage ways; fal) Lake Oswego•Tigard Water Partnership sharing water•connecting communises 113 Lake Oswego 82 Revised Waluga Reservoir 2—Land Use Application b. Flood plains; c. Willamette River Greenway; d. The Tualatin River corridor; e. Wetlands; f Oswego Lake, its bays and its canals; g. Tree groves; h. Forested ridgelines; i. Viewpoints; j. Steep slopes; k. Weak foundation soils; I. High ground water areas; m. Areas of geologic hazard(unstable soils); and, n. Scenic resources. Applicant Response: This plan policy directs the City,not the applicant, to undertake proactive measures to protect sensitive lands. The City's sensitive lands regulations provide this protection and this proposal is consistent with those regulations. Goal 6: Air, Water, and Land Resources Quality Section 1: Air Resources Quality Policy 3. Preserve and enhance the City's open space and natural resources to sustain their positive contribution to air quality. Applicant Response: The proposal will protect open space and natural resources consistent with adopted regulations. After construction the buried pipeline and aboveground reservoir will have no measurable effect on air quality. Continued use of the property for major utilities rather than maximizing the residential density will result in fewer vehicle trip emissions. Therefore, the proposal is consistent with this policy. Policy 4. Increase the opportunity to use alternative transportation as a means to reduce air pollution by: a. Requiring safe and comfortable pedestrian and bicycle pathways as part of all new street construction projects, where feasible; b. Ensuring new street projects accommodate existing and future transit requirements; c. Requiring the design of new development to be supportive of pedestrian, transit and bicycle users; d. Requiring payment of a systems development charge to be applied to the City's pedestrian and bicycle path system; e. Providing appropriate pedestrian and bicycle facilities as part of new park projects; and, 411/ Lake Oswego•Tigard Water Partnership shoring water•connecting communities 114 63 f. Maintaining an ongoing program to build and maintain pedestrian and bicycle paths. Applicant Response: The proposal is for a buried pipeline and an aboveground reservoir that will not generate any significant demand on the transportation system, nor will the proposal alter the existing local transportation system. Therefore, the proposal is consistent with this policy. Policy 5. Encourage land use patterns which, while reducing dependency on the automobile, are also compatible with existing neighborhoods. Applicant Response: The proposed pipeline and reservoir are passive uses that will not alter the existing land use pattern and will not generate any additional dependency on the automobile.The proposal will generate an average of 1-2 maintenance trips per week, significantly fewer trips than residential development would generate. Therefore,the proposal is consistent with this policy. Section 4: Sound Quality Policy 4. Evaluate the noise potential of proposed development and separate noise-sensitive and noise-producing land uses. Applicant Response Construction activity will occur consistent with adopted Lake Oswego guidelines for noise generation. After construction,the reservoir will not generate any noises that exceed daytime Department of Environmental Quality standards for residential noise receptors. (See Section 9B, Noise Study.) Therefore, the proposal is consistent with this policy. Goal 7: Areas Subject to Natural Disasters and Hazards Section 3: Landslides, Erosion, and Unstable Soils Policy 2. Regulate density and intensity of land use in areas with the potential for unstable soils, known or potential landslide hazards and soil erosion hazard areas, in accord with the degree of hazard. Applicant Response: The reservoir site does not contain"weak soils" as defined by LOC 50.42. Section 12 contains a Geotechnical Report that identifies strategies for construction of the reservoir based on existing soil conditions and known geological hazards. The WR2 will be designed to withstand both a Cascadian Subduction Zone earthquake and local fault rupture. Therefore, the proposal is consistent with this policy. Policy 6. Require that land identified with a potential for high erosion hazard will be maintained in open space, unless appropriate evidence demonstrates that engineering can effectively overcome soil and slope limitations.0/�, Lake Oswego•Tigard Water Partnership sharing water•connecting rammunrrres 115 Lake Oswego 64 Revised Waluga Reservoir 2-Land Use Application Applicant Response: The Geotechnical Report does not identify the site as having the potential for high erosion hazard. Policy 7. Allow development density proposed on steep slopes and on lands with unstable soils to be transferred to stable portions of the site when these areas are preserved as open space. Applicant Response: The applicant is not proposing to transfer density because the site is not unstable. Goal 8: Parks and Recreation Goal: The City shall plan, acquire, develop and maintain a system of park, open space and recreation facilities, both active and passive, that is attractive, safe, functional, and available to all segments of the population and serves diverse current and long range community needs. Applicant Response: This plan policy directs the City, not the applicant, to take proactive steps to develop park and open space facilities. Policy 7. Plan and develop a system of pathways which can connect open space and park facilities with neighborhoods. Applicant Response: The applicant will improve the private driveway from Carman Drive. Maintenance personnel will be able to walk along the paved driveway or gravel paths to all water facilities on site. The public, should it desire,will be able to walk around the gates at Carman Drive and Parkhill and traverse the site.Therefore, the proposal is consistent with this policy. Goal 10: Housing Policy 1. Maintain the following residential land use designations and location&criteria which support the above goal: a. Low Density Residential Density classification Minimum square feet of area per unit R-15 15,000 sq. ft. R-10 10,000 sq. ft. R-7.5 7,500 sq. ft. Low Density is intended for areas: i. Which are currently developed at low density; ii. Where transportation routes are primarily limited to collectors and local streets; ,, Lake Oswego•Tigard Water Partnership sharing water.connecting communities 116 65 iii. Where public services are adequate but development constraints may exist; and, iv. Where sensitivity to the natural environment or the existence of natural hazards indicates a reduced density. b. Medium and High Density Residential[PA 1-962C 1-96-1187; 12117/96) Density classification Minimum square feet of area per unit R-6 6,000 Sq. ft. R-5 5,000 Sq. ft. R-3 3,375 Sq. ft. R-2 and R-O (FAR) Maximum Medium and high density residential areas may be designated in areas: i. Which are currently developed at medium and high density; ii. Where there are public services and few development constraints; and, iii. Near arterials or major collector and transit service, and particularly for high density residential, areas in close proximity to commercial areas andlor employment concentrations. Applicant Response: This policy is directed toward City policy rather than individual projects. The City's zoning regulations implement the Comprehensive Plan. Because the City allows public facilities as conditional uses in the residential districts, the City has considered how permitting conditional uses affects residential density. Therefore, the proposal is consistent with this policy. Policy 3. Assure that residential densities are appropriately related to site conditions, including slopes, potential hazards, and natural features. Applicant Response: The proposal will not affect residential density because it is to construct a utility rather than residential construction. Therefore, the proposal is consistent with this policy. Policy 6. Assure that residential density is appropriately related to the capacity of public facilities, especially residential streets. Developments shall not generate traffic exceeding the capacity of adjacent streets or intersections. (Also see Transportation Chapter, Goal 1, Policy 1, Goal 4 and Figure 16.) Applicant Response: The project is not for residential development. The project will generate 1 to 2 maintenance vehicle trips per week; therefore, the proposal will not generate traffic beyond the planned capacity for local streets.Therefore, the proposal is consistent with this policy. Policy 11. Place higher density residential, employment and shopping opportunities and public facilities, such as transit and parks, within close proximity where feasible. 0 Lake Oswego•Tigard Water Partnership sharing water•connecting communities 117 Lake Oswego 66 Revised Waluga Reservoir 2-Land Use Application Applicant Response: The proposal does not include high-density development. Policy 12. Assure an orderly transition from one residential density to another through design and development standards such as landscaping, buffering and screening. Applicant Response: The proposal does not include creating any new residential units. Policy 13. Provide for the active involvement of neighborhood residents and property owners in decisions affecting their neighborhood. Applicant Response: The applicant exceeded code requirements for neighborhood meetings by conducting an extensive outreach campaign with interested residents and developing a Good Neighbor Plan in conjunction with them. Therefore, the proposal is consistent with this policy. Policy 14. Provide a wide range of housing types to meet the needs of various lifestyles and family types. Applicant Response: The proposal is for a utility, not for housing, and is not applicable. Policy 15. Provide low to moderate cost housing opportunities to meet Lake Oswego's fair share of local and regional housing needs including single family, multifamily, manufactured housing, special use housing, and residential care facilities. Policy 17. Support public and private actions which increase housing choices and reduce housing construction costs. Applicant Response: The proposal is not related to housing choice or costs and is not applicable. Goal 11: Public Facilities and Services Section 1: Public Safety and Fire Protection Policy 2. Require adequate police and fire protection to be considered for all development. Particular attention shall be given to: a. Fire hydrant locations and sufficient fire flows; b. Street layout and site design features that ensure emergency vehicle access and building identification; c. Building security; and, d. Exterior lighting and landscape design. GI , Lake Oswego •Tigard Water Partnership shoring water•connecting communities 118 67 Applicant Response: The proposal will not create any new demand upon public safety or fire protection providers. The City's 2001 Water Master Plan identified deficiencies in storage for fire suppression and emergency response. The proposed WR2 combined with WR1 will mitigate much of that deficiency_ Therefore, the proposal is consistent with this policy. Section 2: Storm Water Management Goal: The City shall reduce storm water problems which cause flooding, erosion and water quality problems. Applicant Response: Section 13 contains a preliminary Stormwater and Drainage Report which outlines how stormwater will be managed on-site and detained in a fenced stormwater detention pond. The stormwater plan conforms to the City of Lake Oswego Surface Water Management Design Workbook,December 2003 Edition.A small filter strip will be provided adjacent to the access road downstream of the extended dry detention pond to provide some treatment of the access road area that is not routed through the pond. Therefore, the proposal is consistent with this policy. Section 3: Water Treatment and Delivery Policy 1. Provide a sufficient supply of high quality water at adequate pressure to meet consumption and fire flow projections and emergency storage needs. Applicant Response: The purpose of the WR2 proposal is to correct existing deficiencies in water storage for fire suppression and emergency response needs. In addition, some of the areas served by the existing Waluga Reservoir do not meet the City's minimum standards for water pressure. The taller WR2 will correct the current service pressure deficiency. Therefore,the proposal is consistent with this policy. Policy 2. Ensure that Lake Oswego's water system is self-supporting. Applicant Response: The cities of Lake Oswego and Tigard have joined together in a partnership to share the costs of enhancing the local water supply system. Rates have increased in order to cover the costs of upgrades. Therefore,the proposal is consistent with this policy. Section 5: Administrative and Government Services, Energy, Communication and Schools Policy 2. Require energy and communication utilities to be provided to all development. Applicant Response: The local utility providers will serve the WR2 with electrical energy and communications through existing FCC licenses. Therefore, the proposal is consistent with this policy. 40 Lake Oswego•Tigard Water Partnership sharing water•connecting rommuniries 119 Lake Oswego 68 Revised Waluga Reservoir 2—Land Use Application Policy 5. Review all residential development proposals for potential impacts on the school system including the adequacy of existing schools and the need for new facilities. Applicant Response: The proposed development will not create any additional residential units, thus it will not create any impacts on school enrollment. Goal 12: Transportation Subgoal 1. Major Streets System Policy 1. The arterial and major collector street network shall be designed and maintained to service level "E"during peak hours. The design of the roadway system shall also take into consideration: a. Balancing roadway size and scale with the need to provide efficient and safe transportation for all modes of travel, including bike, pedestrian and transit, b. Giving preference to transportation projects that increase the efficiency, safety, design capacity or level of service of a transportation facility, without increasing corridor width; and c. Preserving community aesthetics by considering existing topography and vegetation. Applicant Response: The project will not create a new arterial or collector street. Policy 2. Direct access onto major streets shall be controlled and consolidated over time through the development review process and the implementation of major street projects. In particular, access to state highways shall be reviewed subject to the regulations of the Oregon Department of Transportation and the City of Lake Oswego. Where regulations conflict, the more restrictive requirements shall apply. Applicant Response: The applicant does not propose to create a new access point onto a major street. Maintenance vehicles will access the site from Carman Drive, a major collector rather than from local streets. Therefore, the proposal is consistent with this policy. Policy 5. The City shall require the mitigation of negative impacts upon pedestrian and bicycle mobility, noise levels, safety, aesthetics and air quality when new residential development is located adjacent to major streets. Applicant Response: The proposal does not create residential development. Subgoal 3: Neighborhood Collectors and Local Residential Streets Policy 5. The City shall ensure that new development which will use new and existing neighborhood collectors and local residential streets is compatible with these street's function and character. Development approval of new land uses shall ensure that: fop, Lake Oswego•Tigard Water Partnership, sharing water-connecting mrnmunutes 120 69 a. The quiet residential quality of neighborhood streets is fostered and maintained. b. Street improvements required to serve new land uses are designed in accordance with the adopted neighborhood plan and to the minimum necessary scale. Applicant Response: Weekly, 1 to 2 maintenance vehicles will access the site from Carman Drive, a major collector,rather than from local streets. Therefore, the project will not disturb the quiet residential quality of neighborhood streets. Therefore, the proposal is consistent with this policy. Subgoal 4: Land Use and Transportation Relationships Policy 1. The City shall use the following criteria when reviewing proposals for new street development or for improvements to the existing system: a. The service level and scale of new street improvements are appropriate to the land use or area to be served. b. Surface water management considerations are adequately addressed. c. The character of surrounding residential neighborhoods as defined by the adopted neighborhood plan is preserved. When improvements are made to major streets that are adjacent to, or bisect, residential areas, measures shall be taken to mitigate noise, aesthetic and safety impacts and discourage cut-through traffic on adjacent residential streets. d. The project's impacts upon the natural and human-made surroundings are clearly defined. This includes consideration of topography, hydrology, distinctive natural areas, vegetation, and surrounding land uses. The commitment to mitigate impacts shall occur in the project planning stages through the application of specific design techniques. Policy 4. The City shall require that a proposed increase in land use intensity be accompanied by a detailed traffic analysis, using current information, which finds that existing streets and intersections both on and off site will accommodate the projected traffic increases, or,. necessary improvements can be constructed which are in conformance with the Comprehensive Plan Transportation Map. Mitigation of negative impacts (noise, aesthetics, safety, bicycle and pedestrian mobility) shall be paid for by the developer of the property. Applicant Response: The applicant prepared a Traffic Control Strategy Memorandum (Section 10). After construction maintenance activity at the WR2 facility will generate 1 to 2 weekly trips to the site. The effect that operations of the WR2 will have on local street mobility and safety will be less than one new residential unit. Therefore, the proposal is consistent with this policy. Policy 9. The City shall, for all development projects, evaluate the adequacy of all transportation modes, to, from, and within the development site. The City shall ensure that: a. The design and location of driveways provides for safe and efficient property access and does not interfere with the safe flow of traffic or degrade the design capacity and adjacent streets; and b. Alternative transportation modes have been provided for, such as public transit, bicycling and walking. Lake Oswego•Tigard Water partnership shatmy water•connecting communities 121 Lake Oswego 70 Revised Waluga Reservoir 2-Land Use Application Applicant Response: This policy requires the City to take proactive measures.The proposal will not create new access points onto local streets. The applicant has prepared a traffic memorandum to ensure that construction activity will not impede safe and efficient traffic movement. Subgoal 6. Walking Policy 3. Connect local walkways to activity centers such as schools, employment areas, parks, commercial areas, and transit centers and corridors. Applicant Response: Pedestrian access is not required because the WR2 use will not generate any demand for pedestrian activity. However,maintenance personnel will have walking access across and through the site.The general public, should it desire,will have the opportunity to access East Waluga Park through the site. Therefore, the proposal is consistent with this policy. Policy 7. The City shall require developers to provide pathway connections from new development projects to the existing bicycle and pedestrian system. Applicant Response: Bicycle access is not required because the WR2 use will only generate 1 to 2 weekly maintenance vehicle trips. Bicycles are not prohibited from using the access opportunities the private drive and maintenance paths the project will create. Therefore, the proposal is consistent with this policy. Subgoal 8: Transit System Goal: The City shall encourage transit ridership by working with Metro, Tri-Met and ODOT to develop a transit system which is fast, comfortable, accessible and economical through development of land use patterns, development design standards and street and pedestrian/bikeway improvements which support transit. Applicant Response: The 1 to 2 weekly maintenance trips will not create any demand on transit ridership. Therefore,the proposal is consistent with this policy. Goal 13: Energy Conservation Goal: The City shall conserve energy. Applicant Response: The WR2 will rely upon an energy-efficient offsite pumping system to bring water up to the reservoir. The project will not create other energy demands. Therefore, the proposal is consistent with this policy. Goal 14: Urbanization tre 0 Lake Oswego •Tigard Water Partnership ,hating water•connecting communities 122 71 Goal: Lake Oswego shall ensure that the rate, amount, type, location, and cost of population growth and development within or outside of the Urban Service Boundary will not diminish the quality of life the City has presently attained. Applicant Response: The proposal will ensure that the City of Lake Oswego provides a reliable water transmission and storage system consistent with the goals for the Comprehensive Plan.The proposal will conserve treed areas consistent with the requirements of the City development code.The proposal reservoir will be set back and screened from abutting lots consistent with the City's development code. Consequently,the WR2 and FWP will enhance the overall quality of life in Lake Oswego and will be designed to be an unobtrusive neighbor.Therefore, the proposal is consistent with this policy. CONCLUSION The applicant proposes to construct a 3.5 MG water reservoir on the City-owned parcel to the north of East Waluga Park. For more than 30 years the 4.0 MG WR1 has occupied this site. As a part of this application,the applicant also proposes to construct a FWP through East Waluga Park to a parcel owned by the City of Lake Oswego on the park's northern lot line. The applicant engaged in extensive neighborhood outreach for more than two years.This has included many public meetings as well as individual household visits. The applicant conducted a required neighborhood meeting(and more) where comments were taken and,where possible;those comments were used to alter the design and construction methods of the proposal.Additionally,the project communications team has worked with neighborhood representatives to create a Good Neighbor Plan,which describes agreements that have been made between these representatives and the project team concerning. A Construction Management Plan describes the construction methods and construction mitigation associated with the project. The applicant is committed to ensuring that construction impacts will comply with all applicable City construction standards and practices. The proposal meets and/or exceeds all applicable City codes. The team has worked with interested neighbors and has put together the best possible plan that succeeds in providing for the water needs for Lake Oswego and its partners into the foreseeable future. For these reasons,we ask the Development Review Commission to approve the proposed application.Thank you. Lake Oswego •Tigard Water Partnership sharing water connecting communities 123 124 Lake Oswego Waluga Reservoir #2 and Finished Water Pipeline Land Use Application August 2013 Supplemental Information t ! 01,1G0 RIR� . '` / . CAL "wolf , • ,i fij— 1 ill I . • ir - . - . iffr........1 .,..... , 41.!.. ,.. _ .,.,. .,.: . , -.Ks - i . __ ... .. _ ______ . ---1 0-0.d• - . . .t ,„ •.„ .,.. . . . . ., .ram . RECEIVED AUG 14 2013 City of Lake L snoo Community Development Dept. City of Lake Oswego August 14, 2013 Lake Oswego •Tigard EXHIBIT F-2 Water Partnership LU 12-0044 sharing water•connecting communities I-1- p to 125 126 Lake Oswego Waluga Reservoir 2 and Finished Water Pipeline Land Use Application August 2013 Supplemental Information Prepared for City of Lake Oswego August 14,2013 Prepared by Corianne Hart, P.E., Brown and Caldwell Eric L Eisemann, E2 Land Use Planning Services, LLC , Lake Oswego•Tigard ,, Water Partnership sharing water-connecting communities 127 TABLE OF CONTENTS I. AMENDMENTS-GENERAL BACKGROUND 4 ITEM 1 -REVISED RCPA PLAN RELATING TO TREES 4 III. ITEM 2-VARIANCE FEE 4 IV ITEM 3-UNIFIED SITE PLAN AND MITIGATION PLAN 4 V. ITEM 4-RESIDENTIAL DESIGN STANDARDS 15 VI. ITEM 5-SCALED DRAWINGS 17 VII. CONCLUSION 17 Appendices A. PLANNING AND BUILDING SERVICES LETTER. JULY 15, 2013. B. RCPA UPDATED REPORT C. UNIFIED SITE PLAN D. PLANTING PLAN, WALUGA PARK TO WR2 E. WR2 ELEVATION PLAN GRAPH-FRONT AND SIDE YARD F. WR2 ELEVATION SIDE YARD PLANTING PLAN G. LAKE OSWEGO CITY COUNCIL MEETING MINUTES (FEBRUARY 22, 2011) INCLUDING SECTION 3.1 FROM THE CITY COUNCIL PACKET H. REFINED PIPELINE ALIGNMENT, SECTION 18, FIGURES 3 AND 4 0, Lake Oswego•Tigard Water Partnership, sharing water connecting communities 128 WR2 and Waluga FWP Supplemental Information August 14,2013 I. AMENDMENTS - GENERAL BACKGROUND The applicant, City of Lake Oswego ("City") submitted supplemental materials to its land use application,LU 12-0044 (Waluga Reservoir 2) on June 14,2013. In a letter dated July 15,2013, the City Planning staff found the amended application to be incomplete and requested additional information. (See Appendix A,Planning and Building Services letter,July 15,2013.) The purpose of this amendment is to fulfill this request for supplemental information. This amendment follows the format of the July 15,2013 letter. IL ITEM i - REVISED RCPA PLAN RELATING TO TREES Please submit a revised RCPA plan labeling all the trees within the RC district that are 15 inches in diameter or greater. This information is necessary to determine compliance with the RCPA criteria (LOC 50.05.010.b.ii.) Response The revised site plan labeling all trees within the RC District that are 15 inches DBH or greater is found in Appendix B,Figure 1, of this supplement. III ITEM 2 - VARIANCE FEE A minor variance is now being requested to LOC 50.06.003.2.b.iii to allow the maximum grade of the driveway on the site to increase from 15%to 17%. There is a fee of$3,033 for this request. Please arrange the transfer of the $3,033 from LOTWP fund to the Planning and Building Services Department. Response The Partnership transferred the requested funds to the Planning and Building Services Department. IV. ITEM 3 - UNIFIED SITE PLAN AND MITIGATION PLAN The pipeline through Waluga Park will be reviewed in conjunction with the reservoir application and not as a separate application;however, not all of the criteria for the pipeline component were addressed. Please address all of the criteria listed in LOC 50.07.004.13.c specifically for the pipeline project. This must include a unified site plan showing the full extent of the pipeline through Waluga Park and how it connects to the reservoir site as well as a detailed mitigation plan showing the location, size and species of all plant materials to mitigate the disturbance area for the pipeline. Response The unified site plan showing the full extent of the pipeline through Waluga Park and how it connects to the reservoir site is found in Section 18,Figure 3 and 4 of the original application. Appendix C of this supplement contains two figures that show how the pipeline connects to the. WR2 site. 0 Lake Oswego Tigard Water Partnership sharing water-connecting communities 129 WR2 and Waluga FWP Supplemental Information August 14,2013 The criteria listed in LOC 50.07.004.8.c are described and addressed below. Appendix D,Planting Plan,Waluga Park to WR2 provides planting details. 50.07.004.8.c Environmental Review An applicant for a development subject to this Article pursuant to LOC 50.16.015 shall comply with: For exempt development under LOC 50.07.003.12.a occurring within an RC or RP District or its associated construction setback, the applicant shall... 2. For development other than under subsection (1) above, the environmental review requirements in LOC 50.07.004.8.d to 50.05.010.4.c and LOC 50.05.010.5.b to 50.05.010.5.c(for RC Zones), LOC 50.05.010.6.b to 50.05.010.6.d(for RP Zones)or LOC 50.05.010.6.e (Special Standards for the Oswego Canal), whichever sections are applicable. Response The proposed pipeline in Waluga Park that passes through an RC District is classified as "exempt development" LOC 50.07.003.12.a.iii. However, City staff determined that although the project is exempt development the applicant must address compliance with the standards in LOC 50.07.004.8.c. The applicant proposes to demonstrate compliance through this land use review rather than process a separate ministerial review. The applicant provides a unified site plan and addresses the applicable environmental review requirements in LOC 50.07.004.8.d to 50.05.010.4.c and LOC 50.05.010.5.h to 50.05.010.5.c (for RC Zones). As a result of conversations with Lake Oswego Planning staff, the applicant proposes two general conditions of approval: Condition 1 —Mitigation is not required for pipeline construction in Waluga Park where construction activity disturbs areas within an existing gravel and dirt ad hoc path. Condition 2—Mitigation is required for pipeline construction in non-path areas, however, the mitigation area,based upon the pipeline length times the disturbance area width, shall be transferred to the reservoir site. Because the combined pipeline and WR2 project proposes significant mitigation on the reservoir site ("on-site mitigation") due to RC area disturbance, a portion of that larger, on-site mitigation will be credited against the mitigation area resulting from the limited off- site disturbance due to pipeline construction in Waluga Park. 50.07.004.8.d Delineation of Streams, Wetlands, and Tree Groves 1. Preparation/Criteria. Except as provided in subsection (4) of this section, an applicant for a development subject to environmental review shall first delineate the stream, wetland or tree grove. Delineation is a more precise, site specific determination of the location of the tree grove or water resource prepared by a qualified professional. The delineation shall include a map showing the delineated boundary to plus or minus 2 feet. The delineation map shall also show the protected riparian area, if required for the particular resource. Resource boundaries shall be delineated as follows: a. Tree Groves. Lake Oswego•Tigard Water Partnership Oaring water•connecting communes 130 WR2 and Waluga FWP Supplemental Information August 14,2013 The RC District shall be delineated as follows: i. The boundary of a tree grove shall be measured at the outer edge of a contiguous tree canopy based on aerial photos and/or visual field observations, but shall not include any tree canopy that is within a wetland or below the top of the bank of a stream; and... Response The RC District boundary was delineated on June 26,2010 by Toby G. Bolden,Westlake Consultants,Inc.The approximate size of the RC District on the Waluga Park site is 10 acres. 50.05.010.4.b Modifications to Dimensional Standards and Setbacks of the Underlying Zone Response No modification to the dimensional standards of the underlying zone is being requested as a part of this application. 50.05.010.4.c Density Transfer Response No lot density transfer is being requested as a part of this application. 50.05.010.5.b RC District Protection Area i. The applicant for a major or minor development permit on a property containing an RC district shall designate a minimum of 50%of the RC district after delineation as the "RC protection area." The applicant fora development that does not otherwise require a major or minor development permit may designate a protection area as part of the application, but such application shall be processed as a minor development. Response The applicant has designed the FWP route through Waluga Park so as to avoid removing regulated trees within the RC district. See Section 18,Figure 3. Because the applicant will avoid all impacts to regulated trees, the applicant is not required to dedicate an RC Protection Area in Waluga Park. ii. Except as otherwise provided in LOC 50.05.010.5.c, no development shall be permitted within the protection area. The area outside of the protection area may be fully developed pursuant to applicable regulations. Response The applicant is not required to dedicate an RC Protection Area in Waluga Park. iii. Except as provided in subsection 5.b.iv of this section, the location of the protection area shall be based upon the following criteria: Lake Oswego•Tigard Water Partnership shoring ware-ranneciing communities 131 WR2 and Waluga F'XTP Supplemental Information August 14,2013 Response The applicant is not required to dedicate an RC Protection Area in Waluga Park.This subsection is not applicable. 50.05.010.5.c RC District Development Standards i. Except as provided in subsection 5.c.iii(8), Landscaping, of this section, a criterion applicable to the RC protection area shall apply to the entire RC district if no protection area has been established. Response The development standards criteria are applicable even though the applicant is not required to dedicate an RC Protection Area. ii. in addition to compliance with any other applicable regulations, the following development uses and activities on properties containing an RC district are permitted within the RC district, subject to the standards set forth in subsection 5.c.iii of this section: (6) Utilities; ItespINIse The FWP is a utility permitted in the RC district subject to the standards set forth in subsection 5.c.iii of this section: iii. Development Standards If the proposed types of development are permitted within the RC district, the development activity, use or activity shall comply with the following standards, and the construction standards set forth in LOC 50.05.010.4.d: (1) Streets, Driveways, Lake Trams, and Public Transportation Facilities Response The applicant does not propose to construct any streets, driveways,lake trams or public transportation facilities in Waluga Park as part of the pipeline project. (2) New Structures, Accessory Structures, Decks, Parking Areas, Active Use Recreational Facilities New structures, parking areas, and active use recreational facilities shall be set back at least five ft. from the protection area boundary in order to protect tree roots. Accessory structures, decks, and similar structures meeting the criteria of LOC 50.03.004.2.b.i(1) through (3), Setback Reduction for Accessory Structures, and LOC 50.04.003.8.b, Patios and Decks, are permitted within the five-ft. setback area so long as they are placed no closer than three ft. from the protection area boundary. 0 Lake Oswego•Tigard Water Partnership st&iiv WOTer•connecting communities 132 WR2 and Waluga FWP Supplemental Information August 14,2013 Response The applicant will construct an underground pipeline. The pipeline route was designed to avoid all regulated trees and to avoid damage to tree roots. See Section 18,Figure 3. The proposal does not include any accessory structures, decks,parking areas or active use recreation areas. The existing gravel and dirt trails will be returned to current condition and available for use following construction. (3) Additions to Existing Structures and to Nonconforming Structures Additions to existing structures or to nonconforming structures are permitted provided the addition does not expand the lot coverage in the resource area. Response The applicant is not proposing any additions to existing structures or non-conforming structures. (4) Temporary Construction Activities A temporary construction zone, not greater than ten ft. wide, is allowed around the footprint of any structure when necessary for tools, scaffolds, etc. related to the construction, maintenance, or repair of the structure. No storage of materials or supplies may occur within this zone. Response The applicant is proposing a 10 foot wide construction zone on either side of the five-foot pipeline trenching footprint for a total construction width of 25 feet. The applicant will store materials and supplies necessary for construction of the project outside of the RC area. (5) Passive Use Recreational Facilities in Protection Area Passive use recreational facilities, including soft surface trails and pedestrian bridges, may be located within the RC protection area. If construction of such facilities disturbs any adjacent land within an RC protection area, the disturbed area shall be restored and revegetated with plants identified on the Plant List as appropriate for resource landscaping. Response The route of the pipeline was selected,in part to make use of an existing disturbance area,a gravel trail and dirt trail.After construction activity ends,the applicant will restore the existing trails to current condition. See Appendix D,Planting Plan,Waluga to WR2. The disturbed area outside of the existing trail will be planted with a native seed grass mixture. The total area of the pipeline disturbance area within the Waluga Park RC district is 17,185 square feet.Within the WR2 site the applicant will disturb 91,455 of the RC district. The applicant will provide 120,231 square feet of vegetative restoration, consistent with city standards,within the WR2. site. Consequently,the applicant will provide an excess of 28,778 square feet of landscape restoration in the WR2 site. The applicant proposes to transfer the required 17,815 square feet of required restoration from the Waluga Park pipeline site to the restoration effort on the WR2 site. 0 Lake Oswego •Tigard Water Partnership shoring water•connecting cornrow-Vries 133 WR2 and Waluga FWP Supplemental Information August 14,2013 The total restoration effort for both projects will result in 10,963 more square feet of restoration planting than required by Lake Oswego standards. (6) Utilities Public or private utilities shall not be placed in or through the RC protection area unless tunneling under a resource where tree roots can be avoided and the functions and values of a resource will be maintained, or there is no other practicable alternative. If allowed to be located within an RC protection area, the applicant shall restore and revegetate the disturbed area with plants identified on the Plant List and mitigation shall be required pursuant to LOC 50.05.010.4.e through 50.05.010.4.g. When applying Step 1 (avoidance) of the mitigation process: Response The proposed pipeline route was designed to avoid all protected trees within Waluga Park, In part, the pipeline route follows previously disturbed areas including a gravel and dirt path. The applicant will reseed the pipeline route consistent with the attached Planting Plan in Appendix D and will transfer 17,815 square feet of required restoration from the pipeline site to the WR2 site. (a) Sanitary sewer, water, power, gas, telecommunications, cable and storm drain lines shall be maintained in public rights-of-way and routed around significant resources rather than through a resource wherever possible; Response The pipeline route enters Waluga Park from Quarry Road and traverses the paved parking area. See Section 18,Figure 4.Thereafter,it follows a gravel path until ascending the slope. The selected route was expressly selected so as to avoid impacts to significant trees within the RC area. (b) Drainage patterns shall not be altered in the resource area, or if altered, shall be designed and maintained so as not to adversely impact the functions and values of the resource. Response The project,upon completion,will not alter the grade of the immediate area,the pipe will be buried underground,the trench will be filled,and the disturbed area replanted.Therefore,the selected route and construction activity will not alter existing drainage patterns. (7) Resource Enhancement Projects Resource enhancement projects shall remove only invasive vegetation, and shall plant only vegetation within the RC district or protection area, if one has been established, listed on the Plant List. Any pathways or structures proposed as part of a resource enhancement project shall retain existing trees. Response 0 Lake Oswego•Tigard Water Partnership sharing water•connectingcomnruolNrt 134 WR2 and Waluga FWP Supplemental Information August 14,2013 The project will bury a water pipe in the ground and restore the existing conditions;it is not a resource enhancement project. However, the applicant will reseed the disturbed area with native seed mix and will return the existing pathways to current conditions. (8) Landscaping (a) Plants. Plants used for landscaping within a protection area shall: (i) Be adapted to local soils and growing conditions; (ii) Not be dependent on long-term irrigation, which can increase erosion and sedimentation (irrigation necessary for initial establishment of the plants is not considered long-term irrigation); and (iii) Provide food or cover for wildlife. (b) The City shall maintain a Plant List on file in the Planning Division listing species that comply with this subsection. If a plant is listed in the applicable section of the Plant List for resource landscaping, it shall be presumed to comply with subsection 5.c.iii(7) of this section, Resource Enhancement Projects. The Plant List is not intended to be an exclusive listing of allowable landscaping materials, but shall be used as a guideline and may be updated by the City Manager from time to time as new plants in compliance with this section are discovered or become available. An applicant may utilize a plant not on the Plant List as long as it complies with the criteria in this section. (c) Removal of vegetation identified on the Plant List as appropriate for resource landscaping is not permitted from a protection area. (d) New landscaping shall not include any invasive plants on the City's Plant List. (e) Existing Landscaping: Nonconforming formal landscaped area including ornamental gardens and lawns located within a protection area and in existence at the time of the adoption of these standards may be maintained, altered or modified pursuant to LOC 50.01.006.1, Nonconforming Use, Structure Defined; Rights Granted. However, a nonconforming landscaped area may not be expanded pursuant to LOC 50.01.006.5, Expansion of Nonconforming Industrial or Commercial Uses or Structures. Response Appendix D, Planting Plan,Waluga Park to WR2,demonstrates that the proposed project will revegetate the pipeline route with Sunmark native uplands seed mix. The applicant will transfer 17,815 square feet of required restoration from the pipeline site to the WR2 site. (9) Tree Removal Tree removal on property within the RC district shall be subject to the following criteria: (a) Tree removal in an RC district that has not established an RC protection area shall be subject to a Dead Tree Removal Permit(LOC 55.02.042.3) or Hazard Tree Removal Permit(LOC 55.02.042.4). Tree removal pursuant to LOC 55.02.080(Type II) is prohibited in an RC district prior to designation of the protection area. (b) Tree removal within a designated RC protection area shall be subject to a Dead Tree Removal Permit(LOC 55.02.042(3)) or Hazard Tree Removal Permit (LOC 55.02.042(4)). Tree removal for development permitted pursuant to this ,\ Lake Oswego•Tigard Water Partnership shor ng water-convecting communities 135 WX/R2 and Waluga FWP Supplemental Information August 14,2013 section, excepting subsection 5.c.iii(8), and this subsection, within a protection area is permitted pursuant to LOC 55.02.080(Type II). (c) Tree removal outside of the protection area shall comply with LOC Chapter 55. (d) These limitations are not intended to prohibit removal of trees in an emergency pursuant to LOC 55.02.042(5), Emergency Permit. Response The applicant selected the preferred route so as to avoid removing trees in the RC district. (10) Limited Hazardous Materials Storage Response The applicant will not store hazardous materials in the RC district. Fuels for mechanical equipment will be stored off site. Revegetation/Mitigation Plan e. Mitigation; Purpose Mitigation is a way of repairing or compensating for adverse impacts to the functions and values of a natural resource caused by a development. Mitigation may consist of resource area creation, restoration, or enhancement. Some examples of mitigation actions are construction of new wetlands to replace an existing wetland that has been filled, replanting trees, and restoring stream side vegetation where it is disturbed. This subsection 4.e through LOC 50.05.010.4.g recognize that true replacement of mature or complex natural resource systems is difficult and can take many years. Mitigation is discouraged by first requiring that avoidance of development siting within the resource be explored. Then, if that is not possible, actions should be taken to minimize damage to the resource. Mitigation ratios are established according to the type of mitigation proposed and the value of the resource. Maintenance and monitoring of the mitigation measures are also required. f Progressive Mitigation Steps Required The approving authority shall permit development allowable within an RC protection area or RP district only if it finds that the following progressive steps have been met: i. Step#1 Avoidance The applicant shall endeavor to avoid detrimental impacts on the resource altogether by providing alternative site plans along with the development proposal demonstrating that alternative designs have been explored. If disturbance of a resource district resource is proposed, the applicant shall first demonstrate that intrusion into the resource district cannot be avoided by a reduction in the size or configuration of the proposed development or by changes in the design that would avoid adverse effects on the resource while still allowing development of the property. ii. Step #2 Minimization If the applicant has endeavored to avoid detrimental impacts on the resource according to subsection 4.f.i of this section, and the reviewing authority finds that detrimental Lake Oswego;Tigard Water Partnership Charing woter connecting cornirRities 136 WR2 and Waluga RCP P Supplemental Information August 14,2013 impacts cannot be avoided, then the applicant shall minimize impacts by demonstrating that: (1) Alternative and significantly different site plans and development locations on the subject site have been considered, and that the alternative chosen is the least environmentally damaging; and (2) When mitigation is proposed, there will be no net loss of resource area, functions, or values as a result of development actions pursuant to LOC 50.05.010.4.g.v, Stream Corridors and Tree Groves, or LOC 50.05.010.4.g.vi, Wetlands, whichever is applicable. Response The pipeline route enters Waluga Park from Quarry Road and traverses the paved parking area. See Section 18, Figure 4. Thereafter,it follows a gravel path until ascending the slope. The selected route was expressly selected so as to avoid impacts to significant trees within the RC area. g. Mitigation Requirements i. Mitigation Plan When mitigation is proposed or required as part of a development application, or when required or imposed as a result of a violation of this Code, the applicant shall provide a mitigation plan prepared by a qualified professional that: (1) For proposed development, demonstrates compliance with LOC 50.05.010.4.f and this subsection 4.g. For mitigation of violations of this Code, demonstrates compliance with LOC 50.05.010.4.f.ii(2). (2) Includes a maintenance and monitoring plan. The maintenance and monitoring plan shall include task timelines and quantitative goals to ensure the viability of the mitigation over time. As part of the monitoring plan, the applicant or other legally responsible agent shall provide an annual report to the City Manager on October 31 of each year for a three-year period. The report shall be prepared by a qualified professional and shall document site conditions with narrative and pictures. (3) Provisions for regular maintenance and periodic monitoring of the mitigation site. Failure to comply with an approved mitigation plan shall be deemed a violation of this Code and a public nuisance and may be enforced pursuant to LOC Articles 34.04, Civil Violations, and 34.08, Nuisances. Appendix D of this supplement provides a planting plan for the disturbance area within Waluga Park. As a result of conversations with Lake Oswego Planning staff the applicant proposes two conditions of approval: Condition 1 —Mitigation is not required for pipeline construction in Waluga Park where construction activity disturbs areas within an existing gravel and dirt ad hoc path. Condition 2—Mitigation is required for pipeline construction in non-path areas, however,the mitigation area,based upon the pipeline length times the disturbance area width, shall be transferred to the reservoir site. Because the combined pipeline and WR2 project proposes significant 0 Lake Oswego•Tigard Water Partnership snoring wear.connecting communities 137 WR2 and Waluga FWP Supplemental Information August 14,2013 mitigation on the reservoir site ("on-site mitigation") due to RC area disturbance,a portion of that larger,on-site mitigation will be credited against the mitigation area resulting from the limited off- site disturbance due to pipeline construction in Waluga Park. ii. Required Permits If a Division of State Lands (DSL) wetland permit, Army Corps of Engineers, or other state or federal permit is also required, the City shall not issue a building permit until all applicable state and federal wetland permit approvals have been granted. Respor ss: No additional permits are required. iii. Mitigation Complete Prior to Further Action Mitigation shall be completed prior to a final inspection, issuance of a final occupancy permit, or acceptance of a public improvement. Response As a condition of approval, project mitigation will be completed prior to final inspection. iv. On-Site Mitigation On-site mitigation is required where possible, taking into consideration the existing natural and human-made features of a site. If the reviewing authority finds that on-site mitigation is not possible, then off-site mitigation shall be permitted according to the following priorities: (1) Within the same drainage system (as defined by the Lake Oswego Surface Water Management Plan or the Winterowd Natural Resources inventory) and within the City limits; or (2) Outside of the drainage system, but inside the City limits; or (3) Outside the drainage system and City limits, but within the Lake Oswego Urban Services Boundary. Response Mitigation is required for pipeline construction in non-path areas,however,the mitigation area, based upon the pipeline length times the disturbance area width,shall be transferred to the reservoir site. Because the combined pipeline and WR2 project proposes significant mitigation on the reservoir site ("on-site mitigation") due to RC area disturbance,a portion of that larger,on-site mitigation wilt be credited against the mitigation area resulting from the limited off-site disturbance due to pipeline construction in Waluga Park. v. Stream Corridors and Tree Groves When mitigation is proposed, the reviewing authority shall require a minimum mitigation ratio (area of resource district created or enhanced to area of resource district lost) of 1:1 for stream corridor and tree grove resources. 0 Lake Oswego•Tigard Water Partnership sharing water-rani,wing communities 138 WR2 and Waluga FWP Supplemental Information August 14,2013 Respons a The proposed planting plan is based upon a 1:1 restoration ratio. The pipeline route will be reseeded with native plant mix, the trail surfaces will be returned to existing conditions, and the applicant will transfer mitigation area from the pipeline route to the WR2 site. vi. Wetlands Response There are not wetlands on site, this section is not applicable. vii. Vegetation Restoration Vegetation restoration shall be required to mitigate the loss of plant communities disturbed by development activities. In-kind vegetation shall be required for all mitigation projects, including trees, shrubs, and ground cover plants as identified on the Lake Oswego Master Plant List. The restoration plant community chosen shall recreate a diverse and healthy environment which is compatible with the resource. Response viii. Initial Three-Year Bonding Period (1) Except as provided in subsection 4.g,viii(4) of this section, the applicant or property owner of a development subject to an approved mitigation plan shall post a performance bond or a letter of credit to the City that is equal to 120%of the value of the improvements installed pursuant to the plan fora three-year period. The bond shall be posted prior to the issuance of a building permit to ensure the success of mitigation improvements and the survival of plant materials. (2) The performance bond or the letter of credit will be released by the City after three years upon receiving proof that the mitigation measures have been successfully implemented according to approved plans. Following release of the financial guarantee, the property owner(s) or other designated party(such as a homeowners association) shall remain responsible for maintenance of the resource. (3) If mitigation improvements fail during the bonding period and the responsible party does not replace said improvements after notification by the City, the bond shall be forfeited and shall be used by the City to correct the problem pursuant to the mitigation plan and the conditions of approval. (4) Property owners of individual tax lots that are lots of record which are zoned for single-family residential use, are not large enough to be further divided, and were in existence prior to the date this section becomes effective shall be exempt from these bonding requirements. Response The project is a City of Lake Oswego project and will occur on City-owned park land.A performance bond is not required. 0 Lake Oswego•Tigard Water Partnership sharing water.connecting communities 139 WR2 and Waluga FWP Supplemental Information August 14,2013 V. ITEM 4 - RESIDENTIAL DESIGN STANDARDS The residential design standards(LOC 50.06.001.2) apply to the proposed reservoir structure in addition to the design standards applicable to public use structures (LOC 50.06.001.5). Please submit a revised or addendum narrative addressing the standards in LOC 50.06.001.2 Response Appendix E of this supplement contains the front and side yard analysis which demonstrates that the height of the WR2 tank falls below the maximum height viewing plan. Appendix F contains the side yard planting plan which provides detailed planting and screening information consistent with the side yard screening standard. The narrative addressing the residential design standards of LOC 50.06.001.2, 50.06.001.5 follows. LOC 50.06.001.2. Structure Design—Residential Zones a. Applicability ii. This subsection is applicable to all structures in any other base residential districts, except R-W and R-DD. Response The pipeline is a structure in the R-7.5 residential zone; therefore, staff has determined that this section is applicable. b. Street Front Setback Plane Except as set forth in LOC 50.06.001.2.d and for flag lots in the R-6 zone, the profile of a structure that fronts on a street shall fit behind a plane that starts at the setback line (front yard or side yard abutting a street) and extends upward to 20 ft. in height, then slopes toward the center of the lot up to the maximum base height of the zone, The slope of the street front setback plane is dependent upon whether it applies to a front yard or side yard abutting a street, as follows: i. Front yard—6:12 slope Response Appendix E demonstrates that the front elevation of the WR2 structure is below the maximum height allowed. c. Street Front Setback Plane Exceptions Response The applicant is not proposing any exceptions to the street front setback plane. d. Street Front Setback Plane on Steeply Sloped Lots O. Lake Oswego •Tigard Water Partnership sharing water•connetdng cO IflU,f 6C5 140 WR2 and Waluga FWP Supplemental Information August 14,2013 Response The WR2 site is not classified as a steeply sloped lot; therefore, this section is not applicable. e. Side Yard Setback Plane—Interior Yards Except as set forth in subsection 2.e.ii of this section, the side profile of a structure shall fit behind a plane that starts at the side property line and extends upward to 12 ft. and slopes toward the center of the lot at a slope of 12:12 up to the maximum allowed height at the peak. Response Appendix E demonstrates that the WR2 structure is below the maximum side yard height allowed. f. Side Yard Appearance and Screening At least one of the following design treatments shall be applied along side yards or side elevations. This section is applicable to both interior side yards and side yards that abut streets. iii. Treatment 3— Screening The applicant shall provide screening and buffering of the wall plane with a minimum of one standard plant unit for every 50 linear ft. of side property line or fraction thereof Planting shall occur within an area that is defined by the length of the side elevation plus 20 ft. beyond the width of the building at either end, and outward 20 ft. from the side elevation of the building, towards the side lot line, as shown in Figure 50.06.001-H: Screening and Buffering. Response The structure is not visible from the eastern side yard.The applicant has elected to use Treatment 3, Screening,to screen the\XTR2 structure along the western side yard where the tank is located 35 feet 10.5 inches from the side yard (though outside of the required setback). Appendix F provides a planting plan consistent with the requirements of treatment 3,Screening. This standard is met. LOC 50.06.001.5. Commercial, Industrial, and Multi-Family Development not Located in the FMU Zone, and Minor Development in the R-DD Zone Standards for Approval a. Applicability This standard is applicable in all zones except the FMU zone to: i. Ministerial development: development involving mechanical equipment, limited to LOC 50.06.001.5.b.viii(mechanical equipment screening); and ii. Minor and major development: development involving a structure for commercial, industrial, institutional, public use (including major public facilities and minor public facilities), multi-family residential, attached single-family(three or more units) residential development, and to all minor development within the R-DD zone. This standard is also applicable to exterior modifications of a structure which does not qualify as a ministerial development pursuant to LOC 50.07.003.13.a.ii(3). Response 0 Lake Oswego•Tigard Water Partnership shoring woter•connecting communities 141 WR2 and Waluga FWP Supplemental Information August 14,2013 The site is not located in an FMU zone. The building design standards apply to major public facilities. The application Narrative,Section 4,pages 22-25,addressed the building design standard for the WR2 structure. This supplemental narrative addresses the building design standards applicable to the underground pipeline. b—g. Building Design Standards Response Subsections b through g pertain to buildings. The WR2 water tank is a structure; therefore subsections b through g are not applicable to the buried pipeline project. Buildings shall be designed and located to complement and preserve existing buildings, streets and paths, bridges and h. Rooftop Decks Response The buried pipeline will not contain a roof; therefore, this section is not applicable to the pipeline project. VI. ITEM 5 - SCALED DRAWINGS No scaled drawings of 8%"x 11"reductions were provided in the last submittal. Please submit a minimum set of three sets of larger sized, scaled plans as well as two 8%x 11"reduced copies of the full set of plans. Response The applicant has reproduced all drawings including three sets of all larger sized, scaled plans as well as two 81/2"x 11" reduced copies of all plans and application materials. VII, CONCLUSION The applicant has provided all supplement materials and addressed all applicable code sections identified as being incomplete in the July 15, 2013 letter from Planning and Building Services. The applicant has demonstrated that both the WR2 and pipeline projects are consistent with the Lake Oswego Development Code and;therefore,we ask approval of LU 12-0044. Lake Oswego•Tigard Water Partnership shoring water-rannec!mg tommumhes 142 Lake Oswego Waluga Reservoir 2 and Finished Water Pipeline Land Use Application September 2013 Supplemental Information Prepared for City of Lake Oswego September 12, 2013 Prepared by Corianne Hart, P.E., Brown and Caldwell Eric L Eisemann, E2 Land Use Planning Services, LLC RECEiVED SEP ?013 corn 0 Lake Oswego-Tigard EXHIBIT F-3 Water Partnership LU 12-0044 shoring water•connecting comrnunn+es 143 WR2 and Waluga FWP Supplemental Information September 12,2013 AMENDMENTS - GENERAL BACKGROUND The applicant, City of Lake Oswego ("City") submitted supplemental materials to its land use application, LU 12-0044 (Waluga Reservoir 2) on June 14, 2013 and on August 14,2013. In a memorandum dated September 5, 2013, the City Planning staff found the amended application to be incomplete and requested additional information. This amendment follows the format of the July 15,2013 and August 14, 2013 letters. ITEM 'I - ON-SITE MITIGATION RATIONALE In your narrative response dated August 14, 2013, to LOC 50.05.010.4.g.iv(On-site Mitigation), you need to discuss why on-site mitigation for the pipeline through Waluga Park is not possible. iv. On-Site Mitigation On-site mitigation is required where possible, taking into consideration the existing natural and human-made features of a site. If the reviewing authority finds that on-site mitigation is not possible, then off-site mitigation shall be permitted according to the following priorities: (1) Within the same drainage system (as defined by the Lake Oswego Surface Water Management Plan or the Winterowd Natural Resources Inventory) and within the City limits; or (2) Outside of the drainage system, but inside the City limits; or (3) Outside the drainage system and City limits, but within the Lake Oswego Urban Services Boundary. Response Mitigation is required for pipeline construction in non-path areas.The applicant proposes to transfer the mitigation. However,the pipeline route is a narrow corridor and the grade steepens significantly as the pipeline approaches the WR2 site. Although the pipeline route will be replanted after construction, the applicant must keep the route free of large shrubs and trees in order to access the pipeline for routine maintenance and inspection over the life of the pipeline. Consequently, the route will be reseeded with a native grass seed mix. By transferring the pipeline mitigation area to the WR2 site the applicant will be able to create a larger consolidated mitigation area,using native trees and shrubs that will provide greater mitigation benefit. Because the combined pipeline and WR2 project propose significant mitigation on the reservoir site ("on-site mitigation") due to RC area disturbance,a portion of that larger, on-site mitigation will be credited against the mitigation area resulting from the limited off-site disturbance due to pipeline construction in Waluga Park. ITEM 2 - RCPA TREES In Appendix B of the August 14, 2013 folder, Figure 7 states that eight trees will be removed from the RCPA. When an RCPA is designated, it is to protect all the trees in the RCPA—you can't remove trees in the RCPA for construction purposes. If those trees need to be removed, then they C Lake Oswego •Tigard - Water Partnership Page 2 sharing water•connecturg communities 144 WR2 and Waluga F'X P Supplemental Information September 12,2013 should not be counted in the RCPA. This may be a simple matter of revising and resubmitting a new Figure 7 of Appendix B. Response The applicant submitted an incorrect version of Figure 7. Attachment A is the revised Resource Conservation Protection Area Report prepared by Black and Veatch Corporation and GreenWorks, PC. It contains an update Figure 7. Changes in Attachment A include: • Page 5 of RCPA Report; • Spreadsheet, "All Trees to be Removed", Revised 9/9/13; • Figure 7,Table 1, Summary of Tree Removal and Planting Activities; • Figure 8,Landscape Legend, Notes &Table; and • Figure 9, Overall Landscape Restoration Plan. ITEM 3 - RCPA MITIGATION PLAN Figure 9 of Appendix B in the August 14, 213 folder illustrates the area where tree mitigation and RC mitigation (for the pipeline on the Waluga Park property) will be proposed. This area is illustrated by diagonal hatch lines (I have attached a scan of the map with my notes, above). Some of the mitigation area is within the RCPA and some is not. You can only count area that is within the RCPA as mitigation for the pipeline (tree removal mitigation outside of the RCPA is fine). You need to identify the location and square-footage of the mitigation area that is within the RCPA that you are proposing as mitigation for the pipeline. This is necessary for two reasons: 1) we need to verify that the mitigation area is within the RCPA and is a minimum 1:1 ratio for the RC impact area on the Waluga Park site, and 2) this mitigation area is subject to maintenance and monitoring requirements, while the tree mitigation area is not, so you need to clearly show this area so it is clear what will be subject to these requirements. I believe that the simplest way to deal with this is to illustrate the area that!have outlined in red on the attached map as the RC mitigation area for the pipeline. This area is within the RCPA and I am sure far exceeds the minimum 1:1 ratio (you were proposing to far exceed that requirement anyway). This area would also be the only area that would be subject to the maintenance and monitoring requirements, which requires a monitoring report to be submitted every year for three years after the mitigation is installed. If you can have the folks at Black and Veatch that created this map calculate the square-footage of the area using CAD, then you could just submit a copy of the existing Figure 9 map with the square-footage handwritten in, and outlining that area as the RC mitigation area. It is not necessary to have a full-size plan, I will accept 8 %x 11 size. �, Lake Oswego•Tigard Water Partnership Page 3 sharing water connecting commnnrtres 145 WR2 and Waluga FWP Supplemental Information September 12,2013 Response Attachment B contains a revised Lake Oswego Resource Protection (RP) and Resource Conservation (RC) Delineation and Mitigation Plan,prepared by David Evans and Associates, Inc. Revisions made to Attachment B include: • Table 1, Summary of Tree Removal and Planting Activities; • Revised page 5, last paragraph; • Figure 4,Landscape Legend,Notes, and Tables; • Pipeline Disturbance Buffer Map; and • Figure L1.1, Overall Landscape Restoration Plan. ITEM 4 -- PIPELINE DISTURBANCE AREA MAP Finally, the only map that 1 found that shows the pipeline disturbance area on the Waluga Park site with the location of the RC district overlaid on it is Figure 1 in the June 12, 2013 folder in tab 7. Unfortunately, that map shows the disturbance area as being 50 feet wide instead of 25 feet wide. Please submit a revised plan with the 25-foot disturbance area and label the total square-footage of the disturbance area that is within the RC district. As we discussed on the phone, the August 14, 2013, narrative states that the area is 17,815 s.f, but in another place states that it is 17,185 s.f., so please clarify which it is. Response The Pipeline Disturbance Map showing the corrected 25-foot buffet is included in Attachment B. The correct total square footage of the disturbance area within the RC district is 10,540 square feet. The requested notation is found in Figure 5,Landscape Restoration Plan in Attachment A and Figure L1.1 in Attachment B. VII. CONCLUSION The applicant has provided all supplement materials and addressed all applicable code sections identified as being incomplete in the September 5, 2013 correspondence from Planning and Building Services. The applicant has demonstrated that both the WR2 and pipeline projects are consistent with the Lake Oswego Development Code and;therefore,we ask approval of LU 12-0044. Attachment A Resource Conservation Protection Area Report prepared by Black and Veatch Corporation and GreenWorks,PC Attachment B Lake Oswego Resource Protection (RP)and Resource Conservation (RC)Delineation and Mitigation Plan, prepared by David Evans and Associates,Inc. 41/ Lake Oswego•Tigard Water Partnership Page 4 sharing water coanectrng communities 146 . ✓: - TREECAREUNL IMITED Lake Oswego & Tigard Water Partnership Reservoir & Pipeline 4800 Carman Dr. & Waluga Park Lake Oswego, Oregon TREE INVENTORY & TREE PROTECTION PLAN Revised 9/6/12 Prepared For Lake Oswego-Tigard Water Supply Partnership P.O. Box 369 Lake Oswego, Oregon 97034 Residential and Commercial Removal•Pruning•Arboricultural Services•Consultation MEMBER:Tree Care Industry Association•lnternational Society of Arboriculture•Oregon Construction Contractors Assoc.State Licensed Tree Service#195179•Insured P.O. Box 1566•Lake Oswego,OR 97035.503-635-3165•Fax 503-E Visit our website at www.tclu.com•E-mail: info a�tclu corn EXHIBIT F-4 LU 12-0044 _ � `I payS 147 TREECAREUNLIMITED CONTENTS Summary 1 Assignment 2 Observations 2 Discussion 2 Recommendations for Health & Long Term Welfare of Trees 3 I. Before Construction... 3 II. Specifications for Tree Protection During Construction 4 III. Recommendations for Maintenance & Post Construction Activities 9 IV Tree Maintenance Specifications 12 V. Individual Tree Protection Description 16 VI Special Conditions 22 Appendix 1—Tree Assessment Waluga Reservoir No. 2 24 Appendix 2—Tree Assessment Waluga Park Pipeline 41 Appendix 3—Waluga Reservoir No. 2 Tree Protection Plan 43 Appendix 4—Waluga Park Pipeline Tree Protection Plan ...46 Appendix 5—Warning Sign 48 2 148 TREE"REUNLIMIT£D ARBORIST REPORT Subject: Tree Protection Plan Address of the Report: Waluga Park Finish Water Pipeline 4800 Carman Dr. Lake Oswego, Oregon Date of the Report: August 14, 2012 Report Submitted To: Joel Komarek Director, Lake Oswego-Tigard Water Partnership City of Lake Oswego P.O. Box 369 Lake Oswego, OR 97034 Phone: 503-697-6588 FAX: 503-534-5225 E-mail: jkomarekci.oswego.or.us SUMMARY I have completed an on site assessment of all trees impacted by reservoir construction at 4800 Carman Dr. and the proposed pipeline through Waluga Park. All trees with a minimum diameter of 5 inches at 54 inches above ground(DBH) and greater were included in the assessment. Waluga Reservoir trees are located on the land parcels comprising the construction site, trees in adjacent rights of way and perimeter trees located on neighboring properties . Only trees adjacent to the pipeline route through Waluga Park have been included. Protection measures for these trees will also protect park trees located behind them. Trees included in the Tree Protection Plan are identified by number within the range from #124 through #96614. The total number of regulated trees assessed on site is 582. Of that number, 356 regulated/non-exempt are proposed for protection in the Waluga Reservoir site. Project development is proposing removal of 170 regulated non-exempt trees from the Waluga Reservoir properties. No removals are proposed for regulated/non- exempt trees in Waluga Park. All trees within Waluga Park will be protected from construction activities. The Resource Conservation Protection Area was not delineated in the field at the time of this assessment. As a result, no trees with a DBH of 5 inches or greater from the City of Lake Oswego Invasive Species Tree List have been listed as exempt. Details regarding RCPA trees can be found in the Resource Conservation Protection Area Report. 1 149 ASSIGNMENT Tree Care Unlimited, LLC. was asked to perform an assessment of all impacted trees on the Reservoir site and develop Tree Protection Plans to preserve all protected trees on the reservoir site and impacted by the proposed park pipeline installation. The plans shall conform to the requirements of LOC Article 50.16 Sensitive Lands Overlay Districts and Chapter 55, Tree Code OBSERVATIONS The complete Tree Assessment is found in the attached "Appendix 1•--Waluga Reservoir #2 Tree Assessment". "Appendix 2—Waluga Park Pipeline Tree Assessment" shows the location of all protected trees. Appendix 3 and Appendix 4 are tree protection plan drawings for the reservoir site and the pipeline within the park showing Tree Protection Zone Boundaries, Tree Protection Fence locations and notes detailing the tree protection plan. All diameters as listed in Appendix--1 under the column, "DBH", are in inches. All diameters are measured at 54 inches above mean ground level at the base of the tree or at the narrowest trunk area below stem break in the case of multiple stem trees. Exceptions are noted in the "Comments" column. Height and spread of trees is estimated. Trunk area method was used to determine multiple stem tree diameters. The column headed "Condition" describes the health of trees surveyed which are indicated as being Very Good, Good, Fair, Poor, Very Poor or Dead. Trees rated as Very Good are prime specimens with no visible defects. Trees rated as good may have minor defects but are stable trees in good health. Trees rated as Fair usually contain at least one visible defect that may become more significant some time in the future. Poor trees contain at least one significant visible defect. The defect may be structural or cosmetic. They usually display reduced vigor and may be candidates for removal. Trees rated as Very Poor contain significant defects, are hazardous or near hazardous. ❑ead trees are dead and should be removed before decay advances to the point that they become hazardous. DISCUSSION The organization of the tree protection plan includes three major segments, "Before Construction", "During Construction" and "Maintenance and Post Construction Activities". Each major segment includes an outline of general measures to be taken. Following the general measures are detailed definitions and descriptions of tree protection items. For the purposes of this Tree Protection Plan, an impacted tree is one that has any construction related intrusion into its Tree Protection Zone(TPZ). The impact may be as minor as a construction worker walking through the TPZ or as significant as removing parts of the tree. For the most part, A tree impact area occurs wherever the Construction Zone includes a portion of a TPZ. This plan considers the Construction Zone to exist up to 12.5 feet on either side of the centerline of the pipe. 2 150 RECOMMENDATIONS FOR HEALTH & LONG TERM WELFARE OF TREES I. Before Construction: Before construction the Lake Oswego-Tigard Water Partnership shall retain a Project Arborist who shall be an International Society of Arboriculture Certified Arborist to perform or supervise others to perform the following: a. Identify and number the trees to be protected, verify by mapping and/or tagging and note their size in D.B.H. (Diameter at Breast Height), variety, health and structural conditions, review plans. b. Check with local government agencies for tree protection ordinances. c. Remove any low limbs that may be in the way of construction equipment, and prune as needed to adhere to Standards of Practice of National Arborist Association, Inc. (NAA). Specific standards can be found in their publication "Pruning Fertilizing, Cabling, Pesticide Applications and Lighting System Installation". Which is available from National Arborist Association, 3537 Stratford Road, Wantagh, New York 11793. d. Leave a protective covering on the soil, i.e., existing groundcover or mulch. e. Notify all other contractors that these trees are to be saved and protected. f. Install a temporary 6' high no-climb fence to protect the trees and their root systems. Install tree protection sign on fence. Posts located at a maximum 10' on center as a general rule . For every inch in diameter of the trunk (D.B,H.) allow one half foot of radius from the trunk as the protected area. (Example: 24" D.B.H, = 12' radius of protected root system.) Ideally, we need to protect more than the drip zone. The drip zone into the trunk is the supports roots that hold the tree up. The roots from that drip zone out provide nutrition, water and oxygen. Try to avoid loss of more than 30% of root on any one side. This allows some encroachment within the drip line. This should be determined on a case by case basis at the site while under the supervision of an International Society of Arboriculture (I.S.A.) Certified Arborist. g. Engineer and design proposed structures and construction to avoid root loss. h. Consider tree removals adjacent to trees to be saved for wind related stability concerns. i. Check trees for stability. j. Minimize environmental changes such as soil compaction, changes in surface drainage patterns near trees and excessive moisture loss. 3 151 II. SPECIFICATIONS FOR TREE PROTECTION DURING CONSTRUCTION The following measures are typical in nature and do not apply to all trees in all locations. In the event that these measures do not provide adequate tree protection in a practical manner, the Project Arborist may modify or develop alternate methods that achieve tree protection. The Contractor and any other Lake Oswego Water Partnership agents directly involved with the pipeline installation work shall utilize these measures as directed by the Project Arborist a. Keep equipment off of the fenced TPZs to avoid compaction. b. Keep equipment away from tree structure to prevent damage to trunk and limbs. c. Don't allow chemicals to be dumped on the ground near the tree, i.e., gasoline, diesel, paint, herbicide, cleaner, thinners, etc. within TPZ. d. Provide means of temporary irrigation if the project runs through the summer as recommended by the Project Arborist. e. If roots or limbs are cut or damaged, have them inspected by an ISA Certified Arborist and repaired or treated according to his/her recommendations. f. Protect the trees from excessive heat, i.e., equipment, paving and/or burning. g. Avoid trenching through the root systems. Boring under them or hand digging can save roots. h. Contact the ISA Certified Project Arborist prior to and during any activity within the drip zone or tree protection fencing for consultation. TREE PROTECTION ZONE (TPZ) Each tree to be retained shall have a designated tree protection zone (TPZ) identifying the area sufficiently large enough to protect the tree and roots from disturbance. The standard for computing the size of the TPZ shall be the average radius from the center of the tree to the drip line of the tree's canopy. The tree protection zone impacted trees shall be shown on all site plans for the project. Improvements or activities such as paving, utility and irrigation trenching and other ancillary activities shall occur outside the tree protection zone, unless authorized by the Project Arborist, or by project approval. Unless otherwise specified, the protective fencing shall serve as the tree protection zone. Activities prohibited within the tree protection zone include: • Storage or parking vehicles, building materials, refuse, excavated spoils or dumping of poisonous materials on or around trees and roots. Poisonous materials include, but are not limited to, paint, petroleum products, concrete, dirty water or any other material which may be deleterious to tree health. • The use of tree trunks as a winch support, anchorage, as a temporary power pole, sign posts or other similar function. • Cutting of tree roots by utility trenching, foundation digging, placement of curbs and 4 152 trenches and other miscellaneous excavation without prior approval of the Project Arborist. • Soil disturbance or grade change unless supervised by the Project Arborist. • Drainage changes. TREE PROTECTION FENCING Fenced enclosures shall be erected around trees to be protected to achieve three primary goals, (1) to keep the foliage crowns and branching structure clear from contact by equipment, materials and activities; (2) to preserve roots and soil conditions in an intact and non-compacted state and; (3) to identify the tree protection zone in which no soil disturbance is permitted and activities are restricted, unless otherwise approved by Project Arborist. • Size and type of fence: All trees to be preserved shall be protected with six foot high chain link fences six foot high "no climb"wire fencing. Fences are to be mounted on two inch diameter galvanized iron posts or 8' studded tee steel fence posts, driven into the ground to a depth of at least 2-feet at no more than 10-foot spacing. This detail shall appear in the construction plan set, and can be referenced in the City's Construction Standards. Where tree protection fencing is placed on existing paved surfaces, concrete or steel bases designed to support fence posts may be used. Where ledge rock occurs, drilling the rock may be required. The Project Arborist may require drilling and pinning of the bases into the supporting paved surface if shifting of the fence occurs. • Area to be fenced: The fences shall enclose the entire area within the tree protection zone of the tree(s) to be saved throughout the life of the project as mapped by the building permit approval, or as mapped within the tree protection and preservation plan contained in the Arborist Report for the project. The fencing shall remain until final improvement work within the area is required, typically near the end of the project. If the fencing must be located on paving or sidewalk that will not be demolished, the posts may be supported by an appropriate grade level concrete base. For trees situated within a narrow planting strip, only the planting strip shall be enclosed with the required chain link protective fencing in order to keep the sidewalk and street open for public use. Trees situated in a small tree well or sidewalk planter pit, shall be wrapped with 2-inches of orange plastic fencing as padding from the ground to the first branch with 2-inch thick wooden slats bound securely on the outside. During installation of the wood slats, caution shall be used to avoid damaging any bark or branches. Major scaffold limbs may also require plastic fencing as directed by the Project Arborist or Project Arborist. • Duration: Tree fencing shall be erected before demolition, grubbing, grading or construction begins and remain in place until final inspection of the project permit, except for work specifically required in the approved plans in which case the Project Arborist or Project Arborist (in the case of street trees) must be consulted. • Warning Sign: A warning sign shall be prominently displayed on each fence section. The sign shall be the City of Lake Oswego approved sign as included in their Tree Protection Packet. See Appendix 3. TREE PROTECTION ALERNATIVE In situations where construction impact intrudes into a TPZ but is compatible with the long term viability of the tree(s) as determined by the Project Arborist the Project Arborist may prescribe alternative tree protection to fencing. Such protection measures may include 5 153 minimum 12 inch thick wood chip layer over a soil cloth base. Steel plates placed over the ground to protect TPZ from soil compaction may also be an example of a Project Arborist prescribed alternative protection measure. CONSTRUCTION MEETING AND INSPECTION SCHEDULE The Project Arborist retained shall conduct the following required inspections for the duration of construction activity. Correspondence may be as simple as e-mail in some cases or may require larger documents with tables, photographs, etc. for others. • Inspection of Protective Tree Fencing: The City of Lake Oswego shall be in receipt of a written statement from the applicant or Project Arborist verifying that the protective tree fencing has been installed and may be inspected by the Project Arborist prior to issuance of a demolition, grading, or building permit, unless otherwise approved. • Pre-Construction Meeting: Prior to commencement of construction, the applicant or contractor may be required to conduct a pre-construction meeting to discuss tree protection with the job site superintendent, grading equipment operators and Project Arborist. • Monthly Inspections: If a Project Arborist is required for the development project, he/she shall perform monthly inspections to monitor changing conditions and tree health. The Project Arborist shall maintain an inspection summary during the first week of each calendar month or, immediately if there are any changes to the approved plans or protection measures. • Special Activity Within the Tree Protection Zone: All work such as excavation or like activity that poses risk of damage to the tree in this area (TPZ) requires the direct onsite supervision of the Project Arborist. • Project Summary and Conclusion: A brief summary discussing the project's trees shall be developed by the Project Arborist at the conclusion of all construction activity. It shall include concerns about trees that may have been negatively impacted as well as recommendations for care of the trees in the future. CONSTRUCTION ACTIVITY Construction is normally prohibited in the TPZ. Under certain circumstances it may be necessary to work in the TPZ, however only with approval from the Project Arborist. If any construction activity is to occur in the TPZ the following guidelines apply: Excavation and Grading The following guidelines shall be followed in regard to excavation and grading activities: 1. Contractor shall notify the Project Arborist a minimum of 24 hours in advance of the activity in the tree protection zone. 2 Roots that are encountered shall be cut to sound wood and repaired. Roots 2-inches and greater in diameter must remain injury free and uncut unless directed to do otherwise by the Project Arborist. 3. Any approved excavation, demolition or extraction of material shall be performed with equipment sitting outside the tree protection zone. Methods permitted are by hand digging, hydraulic or pneumatic air excavation technology. Avoid excavation within the 6 154 TPZ during hot, dry weather. Grade changes within the tree protection zone are not permitted unless approved by the Project Arborist. 4. Grade changes outside of the tree protection zone shall not significantly alter drainage within the TPZ. 5_ Grade changes under specifically approved circumstances shall not allow more than 6- inches of fill soil added or allow more than 4-inches of existing soil to be removed from natural grade. 6. Grade fills over 6-inches or impervious overlay shall incorporate an approved permanent aeration system, permeable material or other approved mitigation. 8. Grade cuts exceeding 4-inches shall incorporate retaining walls or an appropriate transition equivalent. 9. If excavation or trenching for drainage, utilities, irrigation lines, etc., it is the duty of the contractor to tunnel under any roots 2-inches in diameter and greater. Prior to excavation for foundation/footings/wails, grading or trenching within the TPZ, roots shall first be severed cleanly 1-foot outside the tree protection zone and to the depth of the future excavation. The trench must then be hand dug and roots pruned with approved root pruning equipment. 10. If injurious activity or interference with roots greater than 2-inches will occur within the tree protection zone, plans shall specify a design of special foundation, footing, walls, concrete slab or pavement designs subject to Project Arborist approval. Discontinuous foundations such as concrete pier and structural grade beam must maintain natural grade (not to exceed a 4-inch cut), to minimize root loss and allow the tree to use the existing soil. 11. Basement excavations shall be designed outside the tree protection zone of all protected trees unless approved by the Project Arborist, and shall not be harmful to other neighboring property trees. 12. Use of backhoes, steel tread tractors or any heavy vehicles within the TPZ is prohibited unless approved by the Project Arborist. If allowed, a protective root buffer is required. The protective buffer shall consist of a geo-textile fabric laid over the entire root area over which a base course of tree chips spread over the root area to a minimum of 9-inch depth, layered by 3 inch thick 3/4-inch quarry gravel to stabilize 3/4-inch plywood on top. This buffer within the tree protection zone shall be maintained throughout the entire construction process. Trenching, Tunneling and Directional Drilling for Utilities 1. If trenching or pipe installation has been approved within the tree protection zone, then the trench shall be either cut by hand, air-spade, hydraulic vacuum excavation or, by mechanically boring the tunnel under the roots with a horizontal directional drill and hydraulic or pneumatic air excavation technology. 2. Utility pipe must be installed immediately, backfilled with soil and soaked within the same day. 3. Street Trees that are in conflict with utility infrastructure where the conflict cannot be resolved may be removed if approved by the Project Arborist. All Street Tree removals are subject to replacement. 4. Emergency utility repairs shall be exempt from the above restriction zones within the Tree Protection Zone. The Project Arborist shall be contacted after any such repairs that may result in significant tree damage or removal. 7 155 CONSTRUCTION DAMAGE TO PROTECTED TREES Any damage or injury to trees shall be reported within 6-hours to the Project Arborist and Site Superintendent so that mitigation can take place. All mechanical or chemical injury to branches, trunk or to roots over 2-inches in diameter shall be reported in the weekly inspection report. In the event of injury, the following mitigation and damage control measures shall apply: • Root injury: If trenches are cut and tree roots 2-inches or larger are encountered they must be cleanly cut back to a sound wood lateral root. All exposed root areas within the TPZ shall be backfilled or covered within one hour. Exposed roots may be kept from drying out by temporarily covering the roots and draping layered burlap or carpeting over the upper 3-feet of trench walls. The materials must be kept wet until backfilled to reduce evaporation from the trench walls. • Bark or trunk wounding: Current bark treatment methods shall be performed by a qualified tree care specialist within two days. • Scaffold branch or leaf canopy injury: Remove broken or torn branches back to an appropriate branch capable of resuming terminal growth within five days. If leaves are heat scorched from equipment exhaust pipes, consult the Project Arborist within 6 hours. • Significant Root Loss: Tree protection zones that have been impacted to SO% of their tree protection zone by excavation work shall be determined to have lost enough root zone to require remedial maintenance of deep root liquid fertilizer soil injection. The application shall be made to the remaining root zone of the tree at the direction of the Project Arborist. 8 156 III. Recommendations for Maintenance and Post Construction Activity The following maintenance standards apply to maintenance obligations for impacted trees for a period of two years following completion of the improvement installation. Impacted trees are those trees which have endured construction related intrusion into their TPZ. a. Carefully landscape the area under the tree, being careful of the roots and structure. Use plantings that will live under the same conditions as that of the tree. This item applies to disturbed portions of impacted TPZ's that are not paved. b. Provide insect and disease control, fertilization and pruning as needed or adhere to long term protection plan if required by Project Arborist. c. Avoid direct irrigation spraying onto the trunk. The amount of irrigation needed to keep new plantings alive can often be enough to kill mature trees. d. Do not cover existing root systems with more than 2" of soil. The more soil you add, the greater the chances of damaging the root system. e. Provide irrigation and/or drainage to emulate pre-construction conditions. PRUNING STANDARDS The most compelling reason to prune trees is to develop a strong, safe framework. All work to be performed on trees shall be in accordance with the standards set forth in this manual. All specifications for working on trees shall be written and shall be administered by a qualified arborist, and shall be designed to promote the preservation of tree structure and health. All work on trees shall be in accordance with the most current industry standards. Climbing and pruning practices shall not injure the tree except for the pruning cuts. To reduce the probability of insect infestation, disease or infection, seasonal recommendations apply, except when public safety is a concern. All species should not be pruned during the flush of spring shoot growth. Trees with thin bark should not be pruned in summer when sunscald injury may be a factor. Deciduous trees are best pruned November-February. Hazardous trees of any species may be pruned any time of the year for abatement reasons. Mature Trees There are six types of pruning that may be required on mature trees. Prior to entering the tree, the tree worker is required to be familiar with these types of pruning as stated in the Performance Standards, ANSI, A300-1995. 'Species-specific' pruning promotes the natural shape of the tree (i.e. excurrent, decurrent, vase-shaped, fast growing, etc.)The six pruning types are: • Crown Cleaning • Crown Thinning • Crown Raising • Crown Restoration • Crown Reduction • Utility Pruning 9 157 Distressed Trees Distressed trees require as much leaf area as possible to overcome stressed conditions. To avoid additional injury, the following measures shall be followed for these trees: • If a tree has been damaged by injury or disturbance, delay pruning until deadwood becomes evident (typically 1-3 years after injury). Crown cleaning is then recommended. • Trees that have received little or no care or maintenance may need moderate crown thinning, reduction of end weights or entire crown restoration. Young Trees By pruning trees early, it will improve life expectancy and is a proven, cost-effective measure. Added benefits are also reflected in safer trees with fewer branch failures. For trees that serve as a replacement tree, they shall be pruned in the following way: • Prune during the second year after planting to improve their structure, and only minor crown cleaning every 3-7 years thereafter. Refer to ISA Tree Pruning Guidelines. • Do not top the main leader except to position the lowest main branch. Other main branches should be spaced at least 18-inches apart to alleviate a tight grouping branches. • Select permanent branching and allow temporary low branching on the lowest part of the trunk to remain. Aeration Soil that is damaged or compacted within the dripline of trees shall be loosened or aerated to promote root growth and enhance tree vitality. One of the following aeration methods shall be specified an in effort to correct compacted soil conditions: • Vertical Mulching: Auger holes 2 to 4-inch diameter, 2 to 3-feet deep, on 4-foot centers and backfilled with porous material such as perlite, vermiculite or volcanic rock. • Radial Trenching: With an air excavator, excavate a soil trench 3 to 6-inches wide and a minimum of 12-inches deep from (approximately) 3-feet from the trunk out to the dripline area. The trenches shall radiate out from one foot apart at the closest point. • Soil-fracturing with a pneumatic air-driven device. • Subsurface injections under moderate hydraulic pressure using a three foot probe and applied on 3-foot centers under the dripline. Drainage Adequate drainage must be provided to the surrounding soil for the planting of new trees. If the trees are to be planted in impermeable or infertile soil, and water infiltration rates are less than 10 158 2-inches an hour, then one of the following drainage systems or other approved measures must be implemented: • French drain, a minimum of three feet in depth • Drain tiles or lines beneath the trees • Auger six drain holes at the bottom perimeter of the planting pit, a minimum of 4-inches in diameter, 24-inches deep and filled with medium sand or fine gravel 11 159 IV. Tree Maintenance Specifications The following maintenance standards apply to maintenance obligations for impacted trees requiring rehabilitation as determined by the Project Arborist for a period of two years following completion of the pipeline installation. PRUNING STANDARDS The most compelling reason to prune trees is to develop a strong, safe framework. All work to be performed on trees shall be in accordance with the standards set forth in this manual. All specifications for working on trees shall be written and shall be administered by a qualified arborist, and shall be designed to promote the preservation of tree structure and health. All work on trees shall be in accordance with the most current industry standards. Climbing and pruning practices shall not injure the tree except for the pruning cuts. To reduce the probability of insect infestation, disease or infection, seasonal recommendations apply, except when public safety is a concern. All species should not be pruned during the flush of spring shoot growth, Trees with thin bark should not be pruned in summer when sunscald injury may be a factor. Deciduous trees are best pruned November-February. Hazardous trees of any species may be pruned any time of the year for abatement reasons. Mature Trees There are six types of pruning that may be required on mature trees. Prior to entering the tree, the tree worker is required to be familiar with these types of pruning as stated in the Performance Standards, ANSI, A300-1995. 'Species-specific' pruning promotes the natural shape of the tree (i.e. excurrent, decurrent, vase-shaped, fast growing, etc.) The six pruning types are: • Crown Cleaning • Crown Thinning • Crown Raising • Crown Restoration • Crown Reduction • Utility Pruning Distressed Trees Distressed trees require as much leaf area as possible to overcome stressed conditions. To avoid additional injury, the following measures shall be followed for these trees: • If a tree has been damaged by injury or disturbance, delay pruning until deadwood becomes evident (typically 1-3 years after injury). Crown cleaning is then recommended. • Trees that have received little or no care or maintenance may need moderate crown thinning, reduction of end weights or entire crown restoration. 12 160 Young Trees By pruning trees early, it will improve life expectancy and is a proven, cost-effective measure. Added benefits are also reflected in safer trees with fewer branch failures. For trees that serve as a replacement tree, they shall be pruned in the following way: • Prune during the second year after planting to improve their structure, and only minor crown cleaning every 3-7 years thereafter. Refer to ISA Tree Pruning Guidelines. • Do not top the main leader except to position the lowest main branch. Other main branches should be spaced at least 18-inches apart to alleviate a tight grouping branches. • Select permanent branching and allow temporary low branching on the lowest part of the trunk to remain. FERTILIZING This section outlines performance standards for fertilizing and apply only if fertilizing is specified. Fertilizing mature trees is generally not necessary. Fertilizing may be specified for trees that will be impacted by upcoming disturbance, grade changes or a modified environment. Benefits gained from the increase stored resources may aid the tree to overcome the stress caused by disturbance. Specifications Fertilizing, if specified, shall be performed to the following standards: Disease - below ground Soil-borne diseases, such as Armillaria or Phytophthora, are present in West Linn soils. Often, a poor landscape design surrounding old trees encourages harmful, and often lethal diseases. Combined with poorly drained soil, these factors often activate normally dormant fungi to become opportunistic and infect the tree to cause the decline and eventual death of the tree. This decline can be slow and may not be evident for many years. To identify cultural conditions that may lead to diseases such as Verticillium, Phytophthora or other soilborne fungi, review the Sunset Western Garden Book or consult with a Certified Arborist. The following conditions that favor a disease environment must be avoided: • Compacting of the soil within the tree's dripline, adding fill dirt, roto-tilling, trenching, removing soil from the tree root area. • Excessive or regular watering on or near the tree trunk area and planting incompatible water-loving plants within the tree's dripline. • Landscape Design: When planning landscaping around a tree, an evaluation of the tree and soil must be performed to determine if there is a disease present. If the tree is diseased and landscaping will contribute to decline, permanent damage or render it hazardous, it is the obligation of the property owner to take reasonable measures to reduce or eliminate the conditions that may cause the decline of the protected or designated tree. 13 161 WATERING Newly installed trees, including drought tolerant species, are dependent upon supplemental irrigation until established, typically for two years. Periods of extreme heat, wind or drought may require more or less water than recommended in these specifications. The method and amount that is applied may vary depending upon soil composition, heat, wind, companion plantings, rainfall amounts. The watering of trees or their replacements shall follow the standards listed below. New Trees During the establishment period (1-2 years) trees should be watered thoroughly to their root depth as frequently as needed. The minimum standards shall be as follows: • 3 months in the ground: 4 times per month or as necessary • 6 months in the ground: 2 times per month or as necessary • 12 months in the ground: 1 time per month or as necessary Mature trees • 1 time per month during irrigation season (usually June through September) Watering Methods The following options shall fulfill the watering requirements. One or more of the following may be utilized dependent upon unique circumstances subject to the Project Arborist determination. The options are as follows: Automated Watering Systems. All new trees shall be provided with one of the following automatic watering systems or may be water by means of manual systems. Manual systems may not displace soil within the TPZ of the tree or damage the tree. For example, direct spray from a fire hose or street flushing truck are not acceptable methods. Manual water system shall be approved by the Project Arborist. Bubbler heads. One or two bubbler heads mounted on flexible tubing are to be placed adjacent to or on top of the root ball. The placement of bubbler within an aeration tube is not allowed. Drip Loop system. A continuous loop of drip tubing circling around the trunk at a point two-thirds out from the trunk to the edge of the root ball (for new trees 36-inch box size and greater, a second loop of drip tubing is required at a point just beyond the root ball on native soil). Hand watering systems. Recommended for trees that are part of a development project that must be watered to insure tree survival during the course of construction until automatic irrigation is installed. Flood watering. Newly installed trees must be 'flood or basin-watered' on top of the root ball to allow the water to infiltrate through the root zone. Subsurface injections using a hydraulic spray pump (practical for use in hard, compacted soils or steep hillsides). Soaker hose. Slow, deep watering using a garden type soaker hose. Wetting agent. A root ball that has been allowed to dry out beyond the wilting point shall require the addition of a wetting agent to the water (such as Aqua-grow or equivalent). 14 162 Amount Unless otherwise specified, the volume of water applied at each irrigation should be in the range of 10-gallons per inch of trunk diameter when measured at 54-inches above natural grade. The final decision of whether to water or not should be based on accurate soil probe samples that are taken from the root ball. SOIL IMPROVEMENT During development, compaction of the soil is the largest single factor responsible for the decline of older trees. Ninety percent of the damage to the upper eighteen inches of soil occurs during the first pass of heavy equipment - and cannot be reversed. Every effort to avoid compaction of soil porosity within the tree protection zone shall be taken at all times. When required as mitigation for injury or a prohibited action, the following performance standards for improvement of compacted or damaged soil shall be implemented: Aeration Soil that is damaged or compacted within the dripline of trees shall be loosened or aerated to promote root growth and enhance tree vitality. One of the following aeration methods shall be specified an in effort to correct compacted soil conditions: • Vertical Mulching: Auger holes 2 to 4-inch diameter, 2 to 3-feet deep, on 4-foot centers and backfilled with porous material such as perlite, vermiculite or volcanic rock. • Radial Trenching: With an air excavator, excavate a soil trench 3 to 6-inches wide and a minimum of 12-inches deep from (approximately) 3-feet from the trunk out to the dripline area. The trenches shall radiate out from one foot apart at the closest point. • Soil-fracturing with a pneumatic air-driven device. • Subsurface injections under moderate hydraulic pressure using a three foot probe and applied on 3-foot centers under the dripline. Drainage Adequate drainage must be provided to the surrounding soil for the planting of new trees. If the trees are to be planted in impermeable or infertile soil, and water infiltration rates are less than 2-inches an hour, then one of the following drainage systems or other approved measures must be implemented: • French drain, a minimum of three feet in depth • Drain tiles or lines beneath the trees • Auger six drain holes at the bottom perimeter of the planting pit, a minimum of 4-inches in diameter, 24-inches deep and filled with medium sand or fine gravel 15 163 V. Individual Tree Protection Description Basic tree protection measures for each tree impacted by the construction zone are called out in the following listings. Table 1 describes protection measures for the proposed reservoir site at 4800 Carman Dr. Listing order of the trees in Table 2 is in succession from the end of Park Hill Dr. to the Waluga Park parking lot. Other measures as described above may also be employed as directed by the Project Arborist. Other methods to designate limits of work within a TPZ may also be implemented at the direction of the Project Arborist. Consult with the Project Arborist for additional details to clarify tree protection at each location. Impacted Tree Protection Measures Table 1-4800 Carman Dr. Impacted Tree Protection Measures NO. COMMON NAME DBH Tree Protection Measures 283 Douglas Fir 14 Install tree protection fence no closer than 5' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 300 Giant Sequoia 48 Install tree protection fence no closer than 15' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 303 Spruce 16 Protected by Tree #300 measures. 304 Douglas Fir 19 Protected by Tree #300 measures. 379 Sweet Cherry 10 Install tree protection fence no closer than 6' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 381 Red Alder 7 Install tree protection fence no closer than 6' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 450 Douglas Fir 14 Install tree protection fence no closer than 7' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 641 Douglas Fir 27 Install tree protection fence no closer than 25' from tree center. 667.1 Douglas Fir 36 Install tree protection fence no closer than 10' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 761 Douglas Fir 15 Protected by Tree #762 measures. 762 Douglas Fir 25 Install tree protection fence no closer than 10' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 770 Bigleaf Maple 24 Install tree protection fence no closer than 14' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 771 Douglas Fir 30 Install tree protection fence no closer than 8' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 780 Douglas Fir 34 Install tree protection fence no closer than 25' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 16 164 NO. COMMON NAME DBH Tree Protection Measures 781 Douglas Fir 20 Install tree protection fence no closer than 19' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 784 Douglas Fir 27 Install tree protection fence no closer than 7' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 798 Douglas Fir 27 Install tree protection fence no closer than 5' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 799 Douglas Fir 19 Install tree protection fence no closer than 5' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 912 Oregon White 13 Install tree protection fence no closer than 10' from tree Oak center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 933 Douglas Fir 24 Install tree protection fence no closer than 14' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 934 Douglas Fir 21 Install tree protection fence no closer than 16' from tree center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 1211 Douglas Fir 24 Install tree protection fence as shown on plan drawing. Project Arborist shall supervise any excavation or pruning work in impact area outside tree protection fence. 1212 Douglas Fir 28 Install tree protection fence no closer than 10' from tree center. Project Arborist shall supervise any excavation or pruning work in impact area outside tree protection fence. 1223 Douglas Fir 32 Install tree protection fence no closer than 8' from tree center. Install porous road surface or steel plate as approved by Project Arborist. Project Arborist shall supervise any excavation or pruning work in impact area outside tree protection fence. 1224 Douglas Fir 33 Install tree protection fence no closer than 8' from tree center. Install porous road surface or steel plate as approved by Project Arborist. Project Arborist shall supervise any excavation or pruning work in impact area outside tree protection fence. 1242 Douglas Fir 26 Install tree protection fence no closer than 15' from tree center. Install porous road surface or steel plate as approved by Project Arborist. Project Arborist shall supervise any excavation or pruning work in impact area outside tree protection fence. 1408 Oregon White 31 Install tree protection fence no closer than 20' from tree Oak center. Project Arborist shall supervise any excavation work in impact area outside tree protection fence. 17 165 NO. COMMON NAME DBH Tree Protection Measures 1655 Douglas Fir 17 Install tree protection fence no closer than 8.5 feet from tree center. Project Arborist shall supervise any excavation work within the drip line outside the tree protection fence or pruning of the tree. 1659 Oregon White 37 Install tree protection fence no closer than 101 from tree Oak center. Project Arborist shall supervise any excavation or pruning work in impact area outside tree protection fence. 1666 Douglas Fir 29 Install tree protection fence no closer than 12' from tree center. Project Arborist shall supervise any excavation or pruning work in impact area outside tree protection fence. 18 166 Table 2—Walgua Park Pipeline Impacted Tree Protection Measures NO. COMMON NAME DBH Tree Protection Measures 1637 Black Cottonwood 8 Install tree protection fence as shown in Appendix 4. 1637.1 Cascara 6 Within TPZ for Tree #96612 and protected by its protection measures. 1637.2 Cascara 6 Within TPZ for Tree #96612 and protected by its protection measures. 1637.3 Cascara 7 Within TPZ for Tree #96612 and protected by its protection measures. 93312 Douglas Fir 28 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 96611 Pacific Madrone 12 Within TPZ for Tree #96612 and protected by its protection measures. 96613 Pacific Madrone 11 Within TPZ for Tree #96612 and protected by its protection measures. 96614 Pacific Madrone 8 Within TPZ for Tree #96612 and protected by its protection measures. 38303 Douglas Fir 28 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 96601 Bigleaf Maple 11 Within TPZ for Tree #38303 and protected by its protection measures. 96602 Bigleaf Maple 11 Within TPZ for Tree #38303 and protected by its protection measures. 96603 Douglas Fir 8 Within TPZ for Tree #38303 and protected by its protection measures. 96560 Douglas Fir 27 Install tree protection fence as shown in Appendix #4. Avoid excavating within the TPZ for this tree. Cover pipe if necessary with structural soil as described in"VI. Special Conditions item #4". 96606 Douglas Fir 19 Install tree protection fence as shown in Appendix #4. Avoid excavating within the TPZ for this tree. Cover pipe if necessary with structural soil as described in"VI. Special Conditions item #4". 96605 Bigleaf Maple 10 Within TPZ for Tree #96606 and protected by its protection measures. 96607 Bigleaf Maple 8 Within TPZ for Tree #96606 and protected by its protection measures. 96559 Douglas Fir 25 Install tree protection fence as shown in Appendix #4. Avoid excavating within the TPZ for this tree. Cover pipe if necessary with structural soil as described in"VI. Special Conditions item #4". 96423 Bigleaf Maple 18 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92185 Bigleaf Maple 20 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92152 Bigleaf Maple 16 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. The TPZ for this tree also protects a small tree on its south side. 92153 Bigleaf Maple 19 Install tree protection fence as shown in Appendix 4. The Project Arborist shall supervise any work done within tree drip line. 19 167 _ NO. COMMON NAME DBH Tree Protection Measures 92154 Douglas Fir 8 Within TPZ for Tree #92157 and protected by its protection measures. 92155 Douglas Fir 12 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92156 Douglas Fir 21 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92157 Douglas Fir 23 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92158 Douglas Fir 25 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist supervise any work done within the drip line of this tree. Special excavation methods are required to avoid disturbing stability of this tree. Use method approved by Project Arborist which confines rock disturbance to the Construction Zone. 92159 Douglas Fir 24 Within TPZ for Tree #92157 and protected by its protection measures. 92169 Douglas Fir 6 This tree is entirely outside of the Construction Zone. No impact expected. Install tree protection fence as shown in Appendix 4. 62166 Bigleaf Maple 11 This tree is entirely outside of the Construction Zone. No impact expected. Install tree protection fence as shown in Appendix 4. 92146 Bigleaf Maple Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. Special excavation methods are required to avoid disturbing stability of this tree. Use method approved by Project Arborist which confines rock disturbance to the Construction Zone. 92133 Bigleaf Maple 13 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92132 Bigleaf Maple 15 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92124 Douglas Fir 36 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92131 Pacific Madrone 5 Within TPZ for Tree #92124 and protected by its protection measures. 92125 Pacific Madrone 6 Within TPZ for Tree #92124 and protected by its protection measures. 92126 Pacific Madrone 6 Within TPZ for Tree #92124 and protected by its protection measures. 92085 Bigleaf Maple 6 This tree is entirely outside of the Construction Zone. No impacted expected. Install tree protection fence as shown in Appendix 4. 92084 Douglas Fir 29 Install tree protection fence as shown in Appendix 4. The Project Arborist shall supervise any work done within the tree's drip line. 20 168 NO. COMMON NAME DBH Tree Protection Measures 92075 Bigleaf Maple 5 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92076 Bigleaf Maple 10 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92077 Bigleaf Maple 10 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92116 Douglas Fir 23 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92048 Douglas Fir 22 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92110 Pacific Madrone 10 Within TPZ for Tree #92048 and protected by its protection measures. 92032 Douglas Fir 14 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92042 Oregon White Oak 25 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. 92045 Bigleaf Maple 6 Install tree protection fence as shown in Appendix 4. An I.S.A. Certified Arborist shall supervise any work done within the drip line of this tree. It is not the intent of the measures listed above to require the Project Arborist to be in attendance on site at all times during the construction. It is the intent of these measures to have arborist's supervision when installing tree protection measures and when it is likely that excavation work will encounter roots larger than 2 inches in diameter in tree impact (TPZ) zones outside of installed tree protection fences. When construction activities such as excavation work have passed through the impacted TPZ, there is no need for a supervising arborist. The Project Arborist will be on call in the event that an unexpected tree issue is encountered. 21 169 VI. Special Conditions 1. Any pruning of overhanging tree canopies shall be supervised by the Project Arborist who shall be an International Society of Arboriculture Certified Arborist, The Contractor shall be prepared to work around tree branches or limbs that are deemed not to be pruned. The Contractor shall immediately notify the Project Arborist of any damage, no matter how slight, to above ground portions of any tree within the project. The Contractor shall be prepared to immediately undertake mitigation measures as recommended by the Project Arborist. 2. Any roots encountered that are 2" in diameter or larger shall be inspected by the Project Arborist to determine what action is to be taken, The Contractor shall notify the Project Arborist immediately when roots of this description are encountered. The Contractor shall be prepared to undertake alternative measures such as tunneling under the root if pruning is not approved. 3. Where boring rather than open trench construction methods are used, minimum vertical clearance between existing soil surface and top of pipeline bore shall be at least 4 feet when in root zone not directly under tree trunk. If pipeline bore is located directly under a tree trunk, the vertical clearance between the soil surface and top of pipeline bore shall be at least 6 feet. 4. Where fill is placed to create a roadway or existing roadway impacts tree protection zone or where pipe cover is placed over piping placed above existing grade within a TPZ, a porous or gap graded fill Structural Soil may be used. The soil should meet the following general requirements: • Rock • Crushed Rock, Gradation of 100% passing 1.25 inch, 26% Passing 0.75 inch, 4% passing 0.25 inch and 0.5% passing No 40 sieve by weight. • Soil • ASTM D2487 Soils Classification SW-SC Well-graded Sand with Silty Clay. With a composition of 9% Gravel, 81% Sand, 8% Silt and 2% Clay. Organic Content of 8.3% dry weight. • Stabilizer • Stabilizer as supplied by Stabile Inc. 2218 E magnolia Street Phoenix Arizona 85034 USA (602) 225-5900 & 1(800) 336-2468 Phone (602) 225- 5902 Fax NOTE: This tree protection plan identifies construction protection measures to prevent unwarranted tree loss. The identified measures limit the amount of earth disturbance surrounding the trees, and limit the removal of the tree's root systems. Due to the variation of every project, it is unlikely all of the above identified measures can be practicably applied to each individual tree; nor is it likely each measure is necessary to retain each tree. Prior to the beginning of construction a meeting between the Project Arborist and the necessary contractors will be held to determine the appropriate level of protection for each tree, in relation to what work needs to be completed in the tree's vicinity. On site supervision by the Project Arborist will be determined in accordance with this Tree Protection Plan, the Construction Contract, and by the Project Arborist. 22 170 Sincerely, Kay Kinyon Tree Care & Landscapes Unlimited, Inc. Certified Arborist by the International Society of Arboriculture, #PN-0409 23 171 IV Appendix 1—Tree Assessment Waluga Reservoir No. 2 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 124 Douglas Fir Pseudotsugo menziesii 39 Fair 1 129 Douglas Fir Pseudotsuga menziesii 34 Fair 1 130 Douglas Fir Pseudotsuga menziesii 30 Poor Thin crown. 1 206 Red Alder Alnus rubra 7 Fair 1 1 207 Red Alder Alnus rubra 11 Good 1 1 208 Red Alder Alnus rubra 8 Fair 1 1 209 Red Alder Alnus rubra 9 Good 1 1 210 Red Alder Alnus rubra 12 Good 1 1 212 Red Alder Alnus rubra 12 Good _ 1 1 213 Red Alder Alnus rubra 10 Fair 1 1 214 Red Alder Alnus rubra 8 Poor 1 1 215 Red Alder Alnus rubra 7 Dead Yes 216 Red Alder Alnus rubra 9 Fair 1 217 Red Alder Alnus rubra 6 Poor 1 1 218 Red Alder Alnus rubra 12 Fair 1 1 222 Douglas Fir Pseudotsuga menziesii 18 Good 1 _ 283 Douglas Fir Pseudotsuga menziesii 14 Good 1 _ 284 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 285 Douglas Fir Pseudotsugo menziesii 16 Fair 1 1 286 English Holly flex aquifolium 7 Fair 1 1 287 Douglas Fir Pseudotsuga menziesii 17 Fair 1 1 288 Oregon White Oak Quercus garryana 24 Good 1 289 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 290 Sweet Cherry Prunus avium 8 Fair 1 _ 291 Sweet Cherry Prunus ovium 9 _ Fair 1 292 Sweet Cherry Prunus ovium 10 Fair 1 293 Sweet Cherry Prunus ovium 7 Fair 1 294 Sweet Cherry Prunus avium 7 Fair 1 295 English Laureicherry prunus faurocerasus 3 Poor Yes 296 Sweet Cherry Prunus avium 5 Fair 1 1 297 Sweet Cherry Prunus ovium 15 Fair 1 1 298 Douglas Fir Pseudotsuga menziesii 18 Good 1 299 _ Ponderosa Pine Pinus ponderosa 10 Poor 1 . 300 Giant Sequoia Sequoiodendron giganteum 48 Good 1 301 Western Hemlock Tsuga heterophylla 9 Dead Yes 302 Oregon Ash Fraxinus lotifolia 7 Fair 1 303 Spruce Piceasp. 16 Good 1 304 Douglas Fir Pseudotsuga menziesii 19 Good 1 305 Douglas Fir Pseudotsuga menziesii 28 Fair 1 _ I 374 Douglas Fir Pseudotsugo menziesii 13 Good 1 24 NO. _ COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 375 Willow Salix sp. 10 Very Poor Uprooted 1 376 Willow Salix sp. 12 Poor 1 377 Red Alder Alnus rubra 7 Dead Yes 378 English Laurelcherry Prunus laurocerasus 5 Fair 1 378.1 Red Alder Alnus rubra 8 Very Poor Trunk cavity. 8'SW#378,12'W #379 1 379 Sweet Cherry Prunus avium 10 Fair 1 380 Sweet Cherry Prunus avium 14 Fair 1 381 Red Alder Alnus rubra 7 Poor 1 382 Red Alder Alnus rubra 11 Poor 1 1 _ 383 Red Alder Alnus rubra 8 Fair 1 1 384 Red Alder Alnus rubra 5 Poor 1 1 385 Red Alder Alnus rubra 11 Fair _ 1 1 386 Red Alder Alnus rubra 7 Dead Yes 1 387 Red Alder Alnus rubra 4 Poor Yes 1 388 Red Alder Alnus rubra 7 Fair 1 1 389 Red Alder Alnus rubra 8 Fair _ 1 1 390 Red Alder Alnus rubra 6 Fair 1 1 391 Red Alder Alnus rubra 6 Fair 1 1 392 Red Alder Alnus rubra 9 Poor 1 1 393 Red Alder Alnus rubra 10 Fair 1 1 394 Red Alder Alnus rubra 9 Fair 1 1 395 Red Alder Alnus rubra 7 Poor _ 1 1 396 Red Alder Alnus rubra 10 Fair 1 1 397 Willow Salix sp. 7 Poor 1 1 398 Willow Salix sp. 5 Very Poor Dead top 1 399 J Willow Salix sp. 7 Poor 1 1 400 Willow Salix sp. 12 Very Poor Broken top. 1 401 Western Red Cedar Thuja plicate 3 Good Exempt Yes 402 Red Alder Alnus rubra 4 _ Fair Exempt Yes 403 Red Alder Alnus rubra 4 Fair Exempt Yes 404 Sweet Cherry Prunus avium 4 Fair Exempt Yes 405 Douglas Fir Pseudotsuga menziesii 12 Good 1 406 Elderberry Sambucussp. 6 Dead Yes 407 Spruce Picea sp. 4 Fair Exempt Yes 433 Sweet Cherry Prunus sp. 6 _ Fair Exempt Yes 433.1 Red Alder Poor Alnus rubra 8 Poor 20'W#433 1 434 Sweet Cherry Prunus aviurn 6 Fair Exempt Yes 435 Sweet Cherry Prunus avium y 6 Fair _ Exempt Yes 436 Sweet Cherry Prunus avium 15 Fair Exempt Yes 437 Sweet Cherry Prunus avium 4 Fair Exempt Yes 438 Sweet Cherry Prunus avium 5 Fair Exempt _ Yes 439 Douglas Fir Pseudotsuga menziesii 12 Fair 1 440 Douglas Fir Pseudotsugamenziesii 10 Fair 1 3 w 25 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes _ 1=Yes 441 Douglas Fir Pseudotsuga menziesii 14 Good 1 442 Spruce Piceasp. 8 Fair 1 443 Douglas Fir Pseudotsugamenziesii 11 Fair 1 443.1 Willow Salixsp. 11 Very Poor Broken top. 12'E#443,13'NE #444. 1 444 Douglas Fir Pseudotsuga menziesii 14 Good 1 445 Spruce Piceasp. 6 Fair 1 445.1 Willow Salixsp. 13 Very Poor Cavities. 19'E#445,18'SE#444. 1 446 Douglas Fir Pseudotsuga menziesii 14 Good 1 447 Douglas Fir Pseudotsuga menziesii 11 Good 1 448 Douglas Fir Pseudotsuga menziesii 12 Good 1 449 Douglas Fir Pseudotsugamenziesii 12 Good 1 450 Douglas Fir Pseudotsuga menziesii 14 Good 1 450.1 Douglas Fir Pseudotsugamenziesii 15 Good 21'W#450,27'E#462. 1 451 Douglas Fir Pseudotsuga menziesii 13 Good _ 1 452 Douglas Fir Pseudotsuga menziesii 9 Good 1 453 Common Hawthorne Crataegus monogyna 8 Fair 1 454 Douglas Fir Pseudotsuga menziesii 14 _ Good Near 462 1 455 Sweet Cherry Prunus avium 13 Fair 1 456 Sweet Cherry Prunus avium 10 Fair 1 457 Sweet Cherry Prunus avium 8 Fair 2 stems 5,6. 1 458 Bigleaf Maple Acer macrophyllum 24 Poor 4 stems 11,6,19,7. Broken top. 1 459 Bigleaf Maple Acer macrophyllum Poor Part of#458 460 Bigleaf Maple Acer macrophyllum Poor Part of#458 461 Bigleaf Maple Acermacrophyllum Poor Part of#458 462 Giant Sequoia Sequoiadendron giganteum 29 Good 1 463 Port Orford Cedar Chamaecyparis lawsoniano 20 Fair 1 464 Vine Maple Acer circinatum 5 Poor 1 465 Vine Maple Acer circinatum 6 Poor 1 466 Vine Maple Acer circinatum 6 Poor 1 467 Vine Maple Acercircinatum 5 Poor 1 474 Douglas Fir Pseudotsuga menziesii 9 Good 1 475 Douglas Fir Pseudotsuga menziesii 11 Good 1 476 Douglas Fir Pseudotsuga menziesii 12 Good 1 478 Ponderosa Pine Pinus ponderosa 24 Good 1 481 Noble Fir Abies procera 9 Good 1 _ 482 Red Maple Ater rubrum 7 Very Poor 1 489 Douglas Fir Pseudotsuga menziesii 39 Good 1 493 European Mtn.Ash Sorbus aucuparia 9 Poor 1 503 Douglas Fir Pseudotsuga menziesii 16 Fair 1 504 Douglas Fir Pseudotsuga menziesii 10 Poor Suppressed. 1 505 Douglas Fir Pseudotsuga menziesii 22 Good 1 506 Douglas Fir Pseudotsugamenziesii 21 Good 1 507 Sweet Cherry Prunus avium 10 Dead Yes 26 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 508 Douglas Fir Pseudotsuga menziesii 14 Good 1 509 Sweet Cherry Prunus avium 8 Poor 1 510 Douglas Fir Pseudotsuga menziesii 14 Poor Broken top. 1 511 Douglas Fir Pseudotsuga menziesii 8 Poor Suppressed. 1 512 Douglas Fir Pseudotsuga menziesii 23 Good 1 512.1 Sweet Cherry Prunus avium 9 Fair 30'E#512,22'S#514. 1 513 Douglas Fir Pseudotsuga menziesii 15 Good 1 514 _ Sweet Cherry Prunus avium 9 Fair 1 515 Douglas Fir Pseudotsuga menziesii 27 Fair 1 516 Douglas Fir _ Pseudotsuga menziesii 18 Poor Broken top. 1 517 Douglas Fir Pseudotsuga menziesii 15 Poor Broken top. 1 518 Vine Maple Acer circinatum 4 Fair Exempt Yes 519 Douglas Fir Pseudotsuga menziesii 26 Good 1 520 Douglas Fir Pseudotsuga menziesii 27 Good _ 1 521 Douglas Fir Pseudotsuga menziesii 30 Good 1 521 Douglas Fir Pseudotsuga menziesii 31 Good 1 522 Oregon White Oak Quercus garryana 17 Fair 1 523 Douglas Fir Pseudotsuga menziesii 32 Fair 1 524 Sweet Cherry Prunus avium 8 Fair 1 525 Red Alder Minis rubra 6 Fair 1 526 Douglas Fir Pseudotsuga menziesii 38 Good _ 1 527 Douglas Fir Pseudotsuga menziesii 29 Good 1 528 Douglas Fir Pseudotsuga menziesii 22 Goad 1 529 Douglas Fir Pseudotsuga menziesii 18 Fair 1 530 Vine Maple Acer circinatum 4 Fair Exempt Yes 531 Douglas Fir Pseudotsuga menziesii 38 Good 1 532 Vine Maple Acer circinatum 4 Fair Exempt Yes 533 Douglas Fir Pseudotsuga menziesii 15 _ Good 1 534 Douglas Fir _ Pseudotsuga menziesii 20 Good 1 535 Western Hazel Cory/us cornuta 4 _ Fair _Exempt Yes 587 Vine Maple Acer circinatum 7 Poor 2 stems 5,5 1 588 Vine Maple Acer circinatum 9 _ Poor 3 stems 5,4,3. 1 589 Pacific Dogwood Corn us nuttaiiii 6 Fair 1 590 Sweet Cherry Prunus avium 4 Fair Exempt Yes 591 Douglas Fir Pseudotsuga menziesii 35 Good 1 592 Sweet Cherry Prunus avium 4 Fair Exempt Yes 593 Douglas Fir Pseudotsuga menziesii 25 Good 1 1 594 Vine Maple _ Acer circinatum 3 Fair Exempt Yes 595 Vine Maple Acer circinatum 4 Fair Exempt Yes 596 Vine Maple Acer circinatum 10 Fair 9 stems 5,5,3,3,3,3,3,3,3 1 1 615 Sweet Cherry Prunus avium 4 Fair Yes 616 Douglas Fir Pseudotsuga menziesii 23 Good 1 617 Douglas Fir Pseudotsuga menziesii 21 Good 1 618 Douglas Fir Pseudotsuga menziesii 18 Good _ 1 3 cr1 27 CI NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 629 Douglas Fir Pseudotsuga menziesii 13 Good 1 630 Douglas Fir Pseudotsugamenziesii 18 Poor Suppressed. 1 631 Sweet Cherry Prunus avium 6 Fair _ 1 632 Sweet Cherry Prunus avium 4 Fair Exempt Yes 633 Douglas Fir Pseudotsuga menziesii 34 Good 1 634 Douglas Fir Pseudotsuga menziesii 18 Good 1 635 Douglas Fir Pseudotsuga menziesii 32 Fair Bees nest 1 636 Douglas Fir Pseudotsuga menziesii 14 Dead Yes 637 Sweet Cherry Prunus avium 10 Very Poor Broken top _ 1 638 Sweet Cherry Prunus avium 4 Fair Yes 639 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed 1 640 Douglas Fir Pseudotsuga menziesii 29 Fair 1 641 Douglas Fir Pseudotsuga menziesii 27 Fair 1 642 Douglas Fir Pseudotsuga menziesii 13 Fair 1 643 Douglas Fir Pseudotsuga menziesii 15 Fair 1 644 Douglas Fir Pseudotsuga menziesii 11 Poor 1 645 Oregon White Oak Quercus garryana 8 Poor Cavities. 1 646 Oregon White Oak Quercus garryana 7 Fair 1 647 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 648 Douglas Fir Pseudotsuga menziesii 36 Fair 1 652 Douglas Fir Pseudotsuga menziesii 21 Good 1 653 English Laurelcherry prunus laurocerasus 4 Fair _ Yes 654 Pacific Dogwood Corn us nuttallii 4 Fair Yes 655 Pacific Dogwood Corn us nuttallii 5 Fair 1 656 Oregon White Oak Quercus garryana 6 Poor Suppressed. 1 657 Oregon White Oak Quercus garryana 7 Fair 1 658 Oregon White Oak Quercus garryana 17 Fair 2 stems15,7. 1 659 Oregon White Oak Quercus garryana 7 Fair Part of#658. 1 660 Oregon White Oak Quercus garryana 23 Good 1 _ 661 Pacific Yew Taxus brevifolia 12 Poor 1 662 Douglas Fir Pseudotsuga menziesii 36 Fair 1 663 Douglas Fir Pseudotsuga menziesii 29 Good 1 664 Douglas Fir Pseudotsuga menziesii 19 Poor Broken top. 1 665 Douglas Fir Pseudotsuga menziesii 44 Good 1 666 Douglas Fir Pseudotsuga menziesii 23 Good 1 667 Douglas Fir Pseudotsuga menziesii 9 Poor Broken top. 1 667.1 Douglas Fir Pseudotsuga menziesii 36 Good 17'S#667,25'E#668. 1 668 Cascara Rhamnus purshiana 4 Poor Yes 668.1 Oregon White Oak Quercus garryana 6 Fair 18'E?#668,29'S#667. 1 679 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 680 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 681 Douglas Fir Pseudotsuga menziesii 22 Fair 1 1 • 682 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 683 Oregon White Oak Quercus garryana 16 Good 1 1 28 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE _ 1=Yes 1=Yes 684 Douglas Fir Pseudotsuga menziesii 33 Good 1 1 685 Oregon White Oak Quercus garryana 8 Good 1 1 686 Oregon White Oak Quercus garryana 8 Good 1 1 687 Oregon White Oak Quercus garryana 6 Poor Suppressed 1 1 688 Oregon White Oak Quercus gorryana 11 Good 1 1 689 Oregon White Oak Quercus garryana 19 Good 1 1 690 Douglas Fir Pseudotsuga menziesii 24 Good 1 _ 1 691 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 692 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 693 Douglas Fir Pseudotsuga menziesii 14 J Good 1 1 694 Douglas Fir Pseudotsuga menziesii 16 Fair 1 _ 1 695 Douglas Fir Pseudotsuga menziesii 22 — Fair 1 1 696 Oregon White Oak Quercus garryana 17 Good 1 1 697 Douglas Fir Pseudotsuga menziesii 17 Good _ 1 1 _ 698 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 699 Oregon White Oak Quercus garryana . 21 Good 1 1 700 Douglas Fir Pseudotsuga menziesii 21 — Good 1 1 701 Oregon White Oak Quercus garryana 21 Poor 1 1 702 Douglas Fir Pseudotsuga menziesii 22 Good _ 1 1 703 Douglas Fir Pseudotsuga menziesii 7 Very Poor Broken top. 1 1 704 Oregon White Oak Quercus garryana 17 Dead Yes 705 Douglas Fir Pseudotsuga menziesii 20 _ Good 1 1 706 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed. 1 1 707 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 708 Douglas Fir Pseudotsuga menziesii 12 Fair 1 1 709 Douglas Fir Pseudotsuga menziesii 40 Good 1 1 710 Bigleaf Maple Acer macrophyllum 11 Fair 1 1 711 Douglas Fir Pseudotsuga menziesii 11 Good Part of 712 712 Douglas Fir Pseudotsuga menziesii 24 _ Good 2 sterns 11,21. 1 1 714 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 715 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 716 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 717 Douglas Fir Pseudotsuga menziesii 26 Good 1 1 718 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 719 Douglas Fir Pseudotsuga menziesii 27 Good 1 1 761 Douglas Fir Pseudotsuga menziesii 15 Fair 1 762 Douglas Fir Pseudotsuga menziesii 25 Fair 1 769 Douglas Fir Pseudotsuga menziesii 28 Fair 1 770 Bigleaf Maple Acer macrophyllum 24 Fair 1 771 Douglas Fir Pseudotsuga menziesii 30 Good 1 772 Douglas Fir Pseudotsuga menziesii 14 Poor Broken top. 1 773 Douglas Fir Pseudotsuga menziesii 12 Fair 1 774 Douglas Fir Pseudotsuga menziesii 9 _ Poor Broken top. 1 775 Douglas Fir Pseudotsuga menziesii 24 Good 1 3 -,1 29 V 03 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 776 Douglas Fir Pseudotsuga menziesii 26 Good 1 777 Douglas Fir Pseudotsuga menziesii 24 Good 1 778 Douglas Fir Pseudotsuga menziesii 26 Good 1 779 Douglas Fir Pseudotsuga menziesii 23 Good 1 780 Douglas Fir Pseudotsuga menziesii 34 Good 1 781 Douglas Fir Pseudotsuga menziesii _ 20 Good 1 782 Douglas Fir Pseudotsuga menziesii 4 Dead Yes 783 Hinoki Falsecypress Chamaecyparisobtusa 4 Fair Yes 784 Douglas Fir Pseudotsuga menziesii 27 Good 1 792 Vine Maple Acer circinatum 4 Fair Yes 798 Douglas Fir Pseudotsuga menziesii 27 Good _ 1 799 Douglas Fir Pseudotsuga menziesii 19 Good 1 800 Douglas Fir Pseudotsuga menziesii 32 - Good 1 810 Oregon White Oak Quercus garryano 26 Good 1 1 857 Plum Prunus sp. 9 Poor 3 stems 6,5,5. 1 858 Douglas Fir Pseudotsuga menziesii 27 Fair 1 859 Douglas Fir Pseudotsuga menziesii 32 - Fair 1 861 Common Hawthorn Crataegusmonogyna 17 Fair 2 stems 9,14. 1 864 Giant Sequoia Sequoiadendron giganteum 12 Fair 1 867 Grand Fir Abies grandis 34 Dead Yes 868 Western Red Cedar Thuja plicata 17 Fair 1 869 English Laurelcherry prunus laurocerasus 4 Poor Exempt. Yes 870 English Laurelcherry prunus laurocerasus 8 _ Poor 2 stems 5,7. Exempt. Yes 1 871 English Laurelcherry prunus laurocerasus 5 Very Poor Decay. Exempt. Yes 1 872 English Laurelcherry prunus laurocerasus 4 Very Poor Exempt. Yes 1 873 Western Red Cedar Thuja plicata 4 Poor Exempt. Yes 874 Grand Fir Abies grandis 26 Good 1 875 Western Red Cedar Thuja plicata 22 Good 1 876 Western Red Cedar Thuja plicata 26 Good 1 885 Bigleaf Maple Acer macrophyllum 12 Very Poor Uprooted. 1 886 Common Apple Malus sp. 10 Very Poor Cavity. 1 887 Plum Prunus sp. 15 Poor 2 stem 14,11. 1 888 Lombardy Poplar Populus nigra 'Italica' 15 Fair 1 889 Lombardy Poplar Populus nigra 'Italica' 13 Fair 1 890 Lombardy Poplar Populus nigra 'Italica' 22 Fair 1 892 Lombardy Poplar Populus nigra 'Italica' 4 _ Fair Exempt. Yes 898 Douglas Fir Pseudotsuga menziesii 13 Fair 1 901 Douglas Fir Pseudotsuga menziesii 30 _ Good 1 1 902 Bigleaf Maple Acer macrophyllum 11 Poor Broken top. 1 1 903 Bigleaf Maple Acer macrophyllum 5 Fair _ 1 1 904 Douglas Fir Pseudotsuga menziesii 30 Good 1 905 Bigleaf Maple Ater macrophyllum 17 Good 1 906 Douglas Fir Pseudotsuga menziesii 24 Good _ 1 1 907 Bigleaf Maple Ater matrophyllum 14 1 Good 1 1 1 30 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 908 Douglas Fir Pseudotsuga menziesii 33 Good 1 _ 1 909 Serviceberry Amelanchieralnifolia 4 Very Poor _ Yes 910 Bigleaf Maple Acer macrophyllum 15 Fair _ 1 1 911 Douglas Fir Pseudotsuga menziesii 21 Good 1 912 Oregon White Oak Cluercus garryona 13 _ Fair 1 913 Douglas Fir Pseudotsuga menziesii 36 Good 1 914 Sweet Cherry Prunus avium 3 Dead _ Yes 915 Douglas Fir Pseudotsuga menziesii 4 Poor Yes 916 Sweet Cherry Prunus avium 6 Dead Yes 917 Douglas Fir Pseudotsuga menziesii 12 Fair 1 918 Sweet Cherry Prunus avium 6 Very Poor Thin crown. 1 919 Sweet Cherry Prunus avium 6 Dead Yes 920 Willow Salixsp. 14 Very Poor Broken top. 1 921 Sweet Cherry Prunus avium 7 Fair 1 922 Douglas Fir Pseudotsuga menziesii 19 Good 1 923 _ Sweet Cherry Prunus avium 9 Fair 1 924 Sweet Cherry Prunus avium 4 Dead Exempt. Yes 925 Douglas Fir Pseudotsuga menziesii 17 Good 927 Douglas Fir Pseudotsuga menziesii 27 Good 1 928 Douglas Fir Pseudotsuga menziesii 5 Very Poor Suppressed. i 929 Douglas Fir Pseudotsuga menziesii 11 _ Poor Suppressed. 1 930 Douglas Fir Pseudotsuga menziesii 24 Good 1 931 — Douglas Fir Pseudotsuga menziesii 27 Good 1 932 Sweet Cherry Prunus avium 6 Dead Exempt. Yes 933 Douglas Fir Pseudotsuga menziesii 24 Good 1 934 Douglas Fir Pseudotsuga menziesii 21 Good 1 935 Douglas Fir Pseudotsuga menziesii 10 Fair 1 936 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 937 Unknown sp. Unknown _ 3 Dead Exempt. Yes 938 Bigleaf Maple Acer macrophyllum 4 Poor Exempt. Yes 939 Douglas Fir Pseudotsuga menziesii 28 Dead Yes J 940 Sweet Cherry Prunus avium 7 Poor 1 941 Bigleaf Maple Acer macrophyllum 10 Good 1 942 Willow Salixsp. 9 Very Poor 2 stems 9,9 1 943 Willow Salixsp. 9 Very Poor Part of#942 _ 944 Western Hazel Corylus cornuta 3 Poor Yes 945 Cascara Rhamnuspurshiana 3 Poor _ Yes 946 Cascara Rhamnus purshiana 3 Dead Exempt. Yes 947 Cascara Rhamnus purshiana 4 Dead Exempt. Yes 948 Sweet Cherry Prunus avium 7 Poor 1 949 Sweet Cherry Prunus avium 5 Dead Exempt. Yes 950 Sweet Cherry Prunus avium 5 Dead Exempt. Yes 951 Sweet Cherry Prunus avium 11 Fair 1 952 Bigleaf Maple Acer macrophyllum 14 Good 1 j i to 31 Co 0 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 953 Douglas Fir Pseudotsuga menziesii 22 Good 1 954 Sweet Cherry Prunus avium 5 Very Poor 1 955 Sweet Cherry Prunus avium 6 Dead Exempt. Yes 956 Sweet Cherry Prunus avium 6 Very Poor Thin crown. 1 957 Bigleaf Maple Acer macrophyllum 14 Good 1 958 Douglas Fir Pseudotsuga menziesii 20 Good Same as 961. 1 959 Sweet Cherry Prunus avium 4 Dead Exempt, Yes 960 Douglas Fir Pseudotsuga menziesii 28 Good 1 961 Douglas Fir Pseudotsuga menziesii 20 Good Same as 958. 962 Sweet Cherry Prunus avium 3 Fair Exempt. Yes 963 Oregon White Oak Quercus garryana 6 Good 1 964 Sweet Cherry Prunus avium 8 Poor 1 965 Sweet Cherry Prunus avium 5 Dead Exempt. Yes 966 Sweet Cherry Prunus avium 7 Dead Exempt. Yes 967 Sweet Cherry Prunus avium 3 Dead Exempt. Yes 968 Sweet Cherry Prunus avium 6 - Dead Exempt. Yes 969 Sweet Cherry Prunus avium 5 Dead Exempt. Yes 970 Sweet Cherry Prunus avium 4 Dead Exempt. Yes 971 Sweet Cherry Prunus avium 7 Very Poor 1 _ 974 Douglas Fir Pseudotsuga menziesii 17 Good 1 975 Douglas Fir Pseudotsuga menziesii 23 Good 1 976 Douglas Fir Pseudotsuga menziesii 22 - Good 1 977 Douglas Fir Pseudotsuga menziesii 9 Poor Suppressed. 1 978 Douglas Fir Pseudotsuga menziesii 16 Good 1 979 Douglas Fir Pseudotsuga menziesii 9 Fair 1 980 Bigleaf Maple Acer macrophyllum 12 Fair 1 981 Oregon Ash Fraxinus latifolio 9 Fair 1 983 Douglas Fir Pseudotsuga menziesii _ 24 Good 1 984 Cascara Rhamnus purshiana 5 Dead Exempt. Yes 985 Sweet Cherry Prunus avium 4 Dead Exempt. Yes 986 Sweet Cherry Prunus avium 4 Dead Exempt. Yes 987 Unknown Sp. Unknown 4 Dead Exempt. Yes 988 Douglas Fir Pseudotsuga menziesii 17 Good 1 989 Douglas Fir Pseudotsuga menziesii 18 Good 1 990 Douglas Fir Pseudotsuga menziesii 25 Fair 1 991 Sweet Cherry Prunus avium 9 Fair 1 992 Douglas Fir Pseudotsuga menziesii 15 - Good 1 995 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 996 Douglas Fir Pseudotsuga menziesii 10 Fair 1 1 997 Douglas Fir Pseudotsuga menziesii 25 Good 1 1 998 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 999 Bigleaf Maple Acer macrophyllum 8 Fair 1 1 1000 Douglas Fir Pseudotsuga menziesii 13 Poor Broken top. 1 1 _ 1001 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 32 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED_ REMOVE 1=Yes 1=Yes 1002 Douglas Fir Pseudotsuga menziesii 27 Good 1 1 1003 Bigleaf Maple Acermacrophyllum 10 Good 1 1004 Bigleaf Maple Acer macrophyllum 8 Good _ 1 1 1005 Douglas Fir Pseudotsuga menziesii 13 Good 1 1 1006 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1007 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed. 1 1 1008 Douglas Fir Pseudotsuga menziesii 15 Good 1 1 1009 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1010 Douglas Fir Pseudotsuga menziesii 16 Good 1 1011 Bigleaf Maple Acermacrophyllum 9 Fair _ 1 1012 Oregon White Oak Quercus garryana 15 Good 1 1013 Western Hazel Corylus cornuta 4 Fair Yes 1014 Pacific Dogwood Corn us nuttallii 4 Poor Exempt Yes 1016 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1017 Douglas Fir Pseudotsuga menziesii 25 Good 1 1018 Douglas Fir Pseudotsuga menziesii 5 Dead Exempt. Yes _ 1019 Douglas Fir Pseudotsuga menziesii 29 Good 1 1020 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1021 Douglas Fir Pseudotsuga menziesii 6 Dead _ Fallen. Exempt. Yes _ 1022 Douglas Fir Pseudotsuga menziesii 29 Good 1 1023 Douglas Fir Pseudotsuga menziesii 16 Good 1 1024 Douglas Fir Pseudotsuga menziesii 7 Dead Exempt. _ Yes 1025 Pacific Madrone Arbutus menziesii 6 Fair _ 1 1 1026 Douglas Fir Pseudotsuga menziesii 22 Good 1 1027 Douglas Fir Pseudotsuga menziesii 26 Good 1 1 1028 Douglas Fir Pseudotsuga menziesii 7 Poor Suppressed. 1 1 1029 Bigleaf Maple Acer macrophyllum 11 Good 1 1030 Douglas Fir Pseudotsuga menziesii 18 Good _ 1 1031 Douglas Fir Pseudotsuga menziesii 10 Fair 1 1032 Douglas Fir Pseudotsuga menziesii 19 Good 1 1207 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1208 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1209 Vine Maple Acer circinatum 4 Fair Yes 1210 Bigleaf Maple Acer macrophyllurn 12 Good 1 J 1 1211 Douglas Fir Pseudotsuga menziesii 24 Good 1 1212 Douglas Fir Pseudotsuga menziesii 28 Good _ 1 1213 Vine Maple Acercircinatum 4 Good Yes 1214 Sweet Cherry Prunus avium 16 Fair 1 1216 Vine Maple Acer circinatum 4 Fair Exempt. _ Yes 1217 Western Hazel Corylus cornuta 4 Poor Exempt. Yes 1219 Vine Maple - Acercircinatum 4 Good Exempt. Yes 1220 Vine Maple Acercircinatum 4 Good Exempt. Yes 1221 Vine Maple Acercircinatum 4 Good Exempt. Yes 1222 Douglas Fir Pseudotsuga menziesii 33 Good 1 3 Co 33 CO N NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 1223 Douglas Fir Pseudotsuga menziesii 32 Good 1 1224 Douglas Fir Pseudotsuga menziesii 33 Good 1 1238 Vine Maple Ater circinatum 4 Good Exempt. Yes 1239 Vine Maple Ater circinatum 4 Good Exempt. Yes 1240 Common Hawthorn Crataegus monogyna 7 Dead Yes 1241 Douglas Fir Pseudotsuga menziesii 20 _ Good 1 1242 Douglas Fir Pseudotsuga menziesii 26 Good 1 1243 Douglas Fir Pseudotsuga menziesii 20 Good 1 1244 Bigleaf Maple Acer macrophyllum 9 Dead C Yes 1245 Douglas Fir Pseudotsuga menziesii 28 Good 1 1246 Douglas Fir Pseudotsuga menziesii 22 Good 1 1247 Common Hawthorn Crataegus monogyny 4 Poor Exempt. Yes 1248 Douglas Fir Pseudotsuga menziesii 5 Poor Suppressed. 1 1249 Douglas Fir Pseudotsuga menziesii 17 Good 1 1250 Douglas Fir Pseudotsuga menziesii 18 Good 1 1251 Douglas Fir Pseudotsuga menziesii 23 Good 1 1252 Douglas Fir Pseudotsuga menziesii 14 Good 1 1253 Douglas Fir Pseudotsuga menziesii _ 23 Good 1 1254 Douglas Fir Pseudotsuga menziesii 13 Good 1 1255 Douglas Fir Pseudotsuga menziesii 22 Good 1 1256 Douglas Fir Pseudotsuga menziesii 10 Good 1 1257 Douglas Fir Pseudotsuga menziesii 28 Good 1 1258 Cascara Rhamnus purshiana 5 Dead Yes 1259 Cascara Rhamnus purshiana 4 Dead Exempt. Yes 1260 Bigleaf Maple Acer macrophyllum 21 Poor Trunk cavity. 1 1260.1 Pacific Madrone Arbutus menziesii 8 Fair 14'E#1260,30'W#1527 1 1261 Willow Salixsp. 3 Dead Exempt. Yes 1262 Willow Salixsp. 6 Poor 1 _ 1263 Willow Salixsp. 4 Poor Exempt. Yes 1264 Willow Salixsp. 4 Dead Exempt. Yes 1265 Willow Salix sp. 8 Poor 1 _ 1266 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1267 Oregon White Oak Quercus garryana 13 Good 4 stems 8,6,4,7. 1 1 1268 Oregon White Oak Quercus garryana 6 Good Part of#1267 1269 Oregon White Oak Quercus garryana 4 Good Part of#1268 1270 Oregon White Oak Quercus garryana 7 Good Part of#1269 1 1 1272 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1273 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1274 Douglas Fir Pseudotsuga menziesii 9 Poor Conks 1 1 1275 Douglas Fir Pseudotsuga menziesii 15 Good 1 1 _ 1276 Douglas Fir Pseudotsuga menziesii S Fair 1 1 1277 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1278 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1279 Douglas Fir Pseudotsuga menziesii 8 Fair 1 1 34 NO. COMMON NAME BOTANICAL.NAME DBH - CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes J 1=Yes 1280 Douglas Fir Pseudotsuga menziesii 10 Good _ 1 1 1281 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1282 Douglas Fir Pseudotsuga menziesii 11 Good 1 1283 Douglas Fir Pseudotsuga menziesii 10 Good 1 1284 - Douglas Fir Pseudotsuga menziesii 12 Good J 1 1285 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1286 Douglas Fir Pseudotsuga menziesii 30 Good 1 1 1286.1 Cascara Rhamnus purshiano 6 - Very Poor 18'E#1286,16'NE#1285 1 1287 Douglas Fir Pseudotsuga menziesii 8 Poor Suppressed. 1 1 1290 Douglas Fir Pseudotsuga menziesii 15 Good 1 1291 Bigleaf Maple Acer mocrophyllum 9 Fair 1 1292 Douglas Fir Pseudotsuga menziesii 19 Good 1 1293 Douglas Fir Pseudotsuga menziesii 15 Good 1 1294 Douglas Fir Pseudotsuga menziesii 16 Good 1 1295 Douglas Fir Pseudotsuga menziesii 10 Poor Suppressed. 1 1297 Douglas Fir Pseudotsuga menziesii 24 Fair 1 1298 Douglas Fir Pseudotsuga menziesii 26 Fair 1 1299 Black Cottonwood Populus trichocarpo 23 Good 1 1300 _ Scarlet Oak Quercus coccineo 11 Good 1 1301 Douglas Fir Pseudotsuga menziesii 8 Good 1 1302 Sweet Cherry Prunus avium 8 Fair 1 1303 Sweet Cherry Prunus avium 7 Fair 1 1304 Sweet Cherry Prunus avium 12 Poor Trunk cavity. 1 1305 Sweet Cherry Prunus avium 14 Fair 1 1306 Sweet Cherry Prunus avium 6 Fair 1 1307 Douglas Fir Pseudotsuga menziesii 19 Fair 1 1308 Vine Maple Acer circinatum 4 Fair Exempt. Yes 1309 Douglas Fir Pseudotsuga menziesii 30 Good 1 1310 Sweet Cherry Prunus avium 4 Poor Yes 1311 Sweet Cherry Prunus avium 5 Poor 1 1312 Oregon White Oak Quercus garryana 18 - Good 1 1313 Western Hazel Corylus cornuta 3 Poor Exempt. Yes 1314 Western Hazel Corylus cornuta 3 Poor Exempt. Yes 1315 Western Hazel Corylus cornuta 3 Poor Exempt. Yes 1316 Oregon White Oak Quercus garryana 15 Fair 1 1317 Sweet Cherry Prunus avium 5 Fair 1 1318 Douglas Fir Pseudotsuga menziesii 23 Good 1 1319 Douglas Fir Pseudotsuga menziesii 32 Good 1 1320 Douglas Fir Pseudotsuga menziesii 15 Poor Suppressed. 1 1321 Oregon White Oak Quercus garryana 18 Good 1 1322 Douglas Fir Pseudotsuga menziesii 15 Good 1 1323 Douglas Fir Pseudotsuga menziesii 21 Good 1 1324 Oregon White Oak Quercus garryana 6 Poor Suppressed. 1 1325 Douglas Fir Pseudotsuga menziesii 14 Good 1 - w 35 Co NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 1326 Douglas Fir _ Pseudotsuga menziesii 8 Dead Yes 1327 Douglas Fir Pseudotsuga menziesii 19 Good 1 1328 Common Hawthorn Crataegus monogyna 5 Poor _ 1 1331 Vine Maple Acer circinatum 3 Fair Exempt. Yes 1332 Douglas Fir Pseudotsuga menziesii 6 Poor Broken top. 1 1333 Douglas Fir Pseudotsuga menziesii 23 Fair 1 1334 Douglas Fir Pseudotsuga menziesii 25 Fair 1 1335 Douglas Fir Pseudotsuga menziesii 5 Poor Suppressed. 1 1336 Douglas Fir Pseudotsuga menziesii 9 Poor Suppressed. 1 1337 Douglas Fir Pseudotsuga menziesii 4 Very Poor Exempt. Yes 1338 Oregon White Oak Quercus garryana 5 Fair 1 1339 Oregon White Oak Quercus garryana 17 Good 1 1340 Douglas Fir Pseudotsuga menziesii 20 Poor Root zone overfill. Broken top. 1 1341 Japanese Maple Acer palmatum 4 Good 4"mutiple stern Exempt.. Yes 1342 Japanese Cherry Prunus serrulatta 4 Good Exempt. Yes 1343 Camperdown Elm Ulmus globra'Caperdownii' 4 Good Exempt. Yes 1344 Red Maple Acer rubrum 12 Good 1 1345 Douglas Fir Pseudotsuga menziesii 18 Good 1 1346 Douglas Fir Pseudotsuga menziesii _ 15 Good 1 1347 Vine Maple Acer circinatum 3 Fair Yes _ 1348 Pacific Madrone Arbutus menziesii 4 Poor Yes 1349 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 1350 Douglas Fir Pseudotsuga menziesii 33 Good 1 1351 Douglas Fir Pseudotsuga menziesii 17 Poor Suppressed. 1 1352 Douglas Fir Pseudotsuga menziesii 32 Good 1 1353 Bigleaf Maple Acer mocrophyllum 8 Poor 1 1354 Douglas Fir Pseudotsuga menziesii 17 Poor 1 1355 Douglas Fir Pseudotsuga menziesii 14 Very Poor Broken top. 1 1356 Douglas Fir Pseudotsuga menziesii 28 Good 1 1357 Douglas Fir Pseudotsuga menziesii 19 Poor 1 1358 Douglas Fir Pseudotsuga menziesii 17 Fair 1 1359 Douglas Fir Pseudotsuga menziesii 16 Good 1 1360 Douglas Fir Pseudotsuga menziesii 20 Good 1 1361 Douglas Fir Pseudotsuga menziesii 5 Poor _ Suppressed. 1 1362 Oregon White Oak Quercus garryana 12 Good 1 1363 Douglas Fir Pseudotsuga menziesii 18 Good 1 1364 Vine Maple Acer circinatum 4 Good Yes 1365 Douglas Fir Pseudotsuga menziesii 22 Good 1 1366 Vine Maple Acer circinatum 4 Fair Exempt. Yes 1369 Vine Maple Acer circinatum 4 Fair Exempt. Yes 1370 Oregon White Oak Quercus garryana 15 Fair 1 1371 Douglas Fir Pseudotsuga menziesii 21 Fair 1 1372 Douglas Fir Pseudotsuga menziesii 29 Good 1 1373 Douglas Fir Pseudotsuga menziesii 35 Good 1 _ 36 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED ' REMOVE 1=Yes 1=Yes 1374 Pacific Dogwood Cornus nuttallii 6 Good 1 1375 Douglas Fir Pseudotsuga menziesii 24 Good 1 1376 Pacific Dogwood _ Cornus nuttallii 3 Fair Exempt. 1 1377 Pacific Dogwood Cornus nuttallii 4 Good Exempt. Yes 1378 Douglas Fir Pseudotsuga menziesii 29 Good 1 1379 Douglas Fir Pseudotsuga menziesii 21 Good 1 1380 Douglas Fir Pseudotsuga menziesii 12 Very poor Conks 1 1381 Pacific Dogwood Corpus nuttallii 4 Good Exempt. Yes 1382 Douglas Fir Pseudotsuga menziesii 24 Good 1 1383 Bigleaf Maple Acer macrophyllum 14 Good 1 1384 Pacific Yew Taxus brevifolia 4 Fair Exempt, Yes 1385 Douglas Fir Pseudotsuga menziesii 33 Good 1 1386 Vine Maple Acer circinatur 4 Poor Exempt. Yes 1387 Pacific Dogwood Cornus nuttallii 4 Good Exempt. Yes 1388 Bigleaf Maple Acer macrophyllum 8 Good 1 1389 Vine Maple Acer circinatum 4 Dead Exempt. Yes 1390 Vine Maple Acer circinatum 4 Good Exempt. Yes 1391 Oregon White Oak Quercus garryana 15 Dead Exempt. Yes 1394 Bigleaf Maple Acer macrophyllum 17 Good 1 1395 Douglas Fir Pseudotsuga menziesii 14 Poor Broken top. 1 1396 Douglas Fir Pseudotsuga menziesii 37 Good 1 1397 Vine Maple Acer circinatum 4 Good _ Exempt. Yes 1398 Vine Maple Acer circinatum 4 Poor Exempt. Yes 1401 Douglas Fir Pseudotsuga menziesii 45 Good 1 1402 Oregon White Oak Quercus garryana 20 Good 1 1403 Bigleaf Maple Acer macrophyllum 14 Good 1 1404 Douglas Fir Pseudotsuga menziesii 13 Fair _ 1 1407 Sweet Cherry Prunus avium 16 Fair 1 1408 Oregon White Oak Quercus garryana 31 Good 1 1409 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 1 1410 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1411 Black Walnut Juglans nigra 16 Fair 1 1 1412 Western Hazel Corylus cornuta 4 Poor Exempt. Yes 1413 Common Apple Malus sp. 8 Poor 1 1 1414 Vine Maple Acer circinatum 4 Fair Exempt. Yes 1415 Bigleaf Maple Acer macrophyllum 15 Poor 1 1 1421 Vine Maple Acer circinatum 4 Poor Yes 1422 Cascara Rhamnus purshiana 6 Poor 1 1423 Vine Maple Acer circinatum 4 Poor Exempt. Yes 1424 Common Hawthorn Crataegus monogyna 9 Poor 2 stems 4,8. 1 1425 Common Hawthorn Crataegus monogyna 4 Poor Exempt. Yes 1426 Cascara Rhamnus purshiana 4 Poor Exempt. Yes 1439 European White Birch Betula pendulo 7 Good 1 1440 Willow Salixsp. i 6 Very Poor Decay 1 1 j ( 37 Co 01 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 1441 Douglas Fir Pseudotsuga menziesii 22 Fair 1 1442 Cascara Rhamnus purshiana 6 Poor I 1443 European White Birch Betala pendula 5 Good 1 1444 Douglas Fir Pseudotsuga menziesii 37 Good 1 1448 Oregon White Oak Quercus gorryana 21 Good 1 1449 Sweet Cherry Prunus avium 7 Fair 1 1453 Douglas Fir Pseudotsuga menziesii 11 Good 1 1455 Douglas Fir Pseudotsuga menziesii 8 Good 1 1456 Scarlet Oak Quercus coccinea 14 Good 1 1457 Sweet Cherry Prunus avium 4 Fair Exempt. Yes _ 1458 Sweet Cherry Prunus avium 5 Fair 1 1459 Sweet Cherry Prunus avium 7 Fair 1 1460 Douglas Fir Pseudotsuga menziesii 26 Good 1 1461 Sweet Cherry Prunus avium 8 Fair 1 1462 Sweet Cherry Prunus avium 6 Fair 1 1472 Willow Salixsp. 8 Very Poor Decay 1 1473 Bigleaf Maple Acer macrophyllum 8 Good 1 1476 Douglas Fir Pseudotsuga menziesii 9 Good 1 1477 Douglas Fir Pseudotsuga menziesii 11 Good 1 1478 Douglas Fir Pseudotsuga menziesii 9 Good 1 1479 Scarlet Oak Quercus coccinea 15 Good 1 1480 Douglas Fir Pseudotsuga menziesii 7 Good 1 1481 Vine Maple Acer circinatum 4 Good Exempt. Yes 1482 Douglas Fir Pseudotsuga menziesii 16 Good 1 1483 Douglas Fir Pseudotsuga menziesii 10 Good 1 1484 Douglas Fir Pseudotsuga menziesii 12 Good 1 1485 Douglas Fir Pseudotsuga menziesii 6 Poor 1 1487 English Laurelcherry prunus laurocerasus 3 Fair 1 1488 Scarlet Oak Quercus coccinea 13 Good 1 _ 1489 Douglas Fir Pseudotsuga menziesii 17 Good 1 1510 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1511 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1514 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1515 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1516 Douglas Fir Pseudotsuga menziesii 10 N Good 1 1 1517 Scarlet Oak Quercus coccinea 11 Good 1 1 1518 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1519 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1520 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 1521 Douglas Fir Pseudotsuga menziesii 7 Good 1 1 1522 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1523 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1524 Douglas Fir Pseudotsuga menziesii 11 Good 1 1525 — Douglas Fir Pseudotsuga menziesii 5 Poor 1 38 NO. COMMON NAME BOTANICAL NAME 1 DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 1526 Douglas Fir Pseudotsuga menziesii _ 13 Good 1 1527 Douglas Fir Pseudotsuga menziesii 21 Good 1 1527.1 European Birch Betula pendula 8 Fair 18'SW#1527,20'W#1526. 1 1 1528 Douglas Fir Pseudotsuga menziesii 10 Good 1 1529 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1530 Bigleaf Maple Acer macrophyllum 13 Good 1 1539 Willow Salixsp. 9 Dead Exempt. Yes 1540 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1541 Scarlet Oak Quercus coccinea 13 Good 1 1 1542 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1543 Bigleaf Maple Acer macrophyllum 6 Fair Same tree as#1544&1545 1 1544 Bigleaf Maple Acer macrophyllum 7 Fair Same tree as#1543&#1545 1545 Bigleaf Maple Acer macrophyllum _ 5 Fair Same tree as#1543&#1544 1546 Douglas Fir Pseudotsuga menziesii 8 Very Poor Cavity. 1 1 1549 Bigleaf Maple Acer macrophyllum 5 Good 1 1551 Bigleaf Maple Acer macrophyllum 4 Good Exempt. Yes 1552 Douglas Fir Pseudotsuga menziesii 10 Good 1 1553 Douglas Fir Pseudotsuga menziesii 10 Good 1 1554 Douglas Fir Pseudotsuga menziesii 7 Good 1 1555 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed. 1 1558 Douglas Fir Pseudotsuga menziesii 29 Good 1 1570 Douglas Fir Pseudotsuga menziesii _ 28 Good 1 1571 Douglas Fir Pseudotsuga menziesii 29 Good 1 1574 Douglas Fir Pseudotsuga menziesii 15 Good 1 1575 Scarlet Oak Quercus coccinea 15 Good 1 1576 Douglas Fir Pseudotsuga menziesii 4 Poor Exempt. Yes 1577 Douglas Fir Pseudotsuga menziesii _ 4 Poor Exempt. _ Yes 1578 Sweet Cherry Prunus avium 12 Fair 1 1579 Douglas Fir Pseudotsuga menziesii 9 Fair 1 1580 Blue Spruce Picea pungens var.glauco 5 Good 1 1581 Douglas Fir Pseudotsuga menziesii 28 Good 1 1583 Scarlet Oak Quercus coccinea 9 Good 1 1584 Douglas Fir Pseudotsuga menziesii 19 Fair 1 1585 Douglas Fir Pseudotsuga menziesii 42 Good 1 1586 Douglas Fir Pseudotsuga menziesii 25 Good 1 1588 Coast Redwood Sequoia sempervirens 6 Good 1 1589 Coast Redwood Sequoia sempervirens 8 Good 1 1590 Douglas Fir Pseudotsuga menziesii 12 Good 1 1591 Sweet Cherry Prunus avium 10 Fair 1 1592 Douglas Fir Pseudotsuga menziesii 8 Poor 1 1601 Douglas Fir Pseudotsuga menziesii 25 Good 1 1602 Douglas Fir Pseudotsuga menziesii 29 Good 1 1603 Douglas Fir Pseudotsuga menziesii 20 Good 1 1604 Douglas Fir Pseudotsuga menziesii 9 Fair 1 — °3 39 Co CO NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE 1=Yes 1=Yes 1605 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1606 Scarlet Oak Quercus coccinea 14 Good 1 1607 Douglas Fir Pseudotsuga menziesii 6 Good 1 1613 Douglas Fir Pseudotsuga menziesii _ 6 Poor Broken top. 1 1614 Douglas Fir Pseudotsuga menziesii 9 Good 1 1615 Douglas Fir Pseudotsuga menziesii 7 Poor Thin crown 1 1617 Douglas Fir Pseudotsuga menziesii 9 Good 1 1620 Douglas Fir Pseudotsuga menziesii 31 Good 1 1621 Bigleaf Maple Acer macrophyllum S Good 1 1622 Bigleaf Maple Acer macrophyllum 7 Good 1 1623 Bigleaf Maple Acer macrophyllum 7 Good _ 1 1624 Willow Salixsp. 8 Poor 1 1625 Willow Salixsp. 8 Poor 1 1626 Willow Salixsp. 6 Poor 1 1648 Douglas Fir Pseudotsuga menziesii 30 Fair Broken top. 1 1649 Pacific Madrone Arbutus menziesii 13 Very Poor Broken trunk at 20'above ground. 1 1654 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1655 Douglas Fir _ Pseudotsuga menziesii 17 Good 1 1657 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1658 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1659 Oregon White Oak Quercus gorryana 37 Good 1 1660 Douglas Fir Pseudotsuga menziesii 5 Good 1 1666 Douglas Fir Pseudotsuga menziesii 29 Good 1 40 Appendix 2—Tree Assessment Waluga Park Pipeline Regulated Trees NO. COMMON NAME BOTANICAL NAME DBH HEIGHT SPREAD CONDITION COMMENTS 1637 Black Cotton woad Populus trichocorpa 8 35 8 Good 1637.1 Cascara Rhamnus purshiana 6 20 8 Very Poor 1637.2 Cascara Rhamnus purshiana 6 20 8 Very Poor Not tagged. 1637.3 Cascara Rhamnus purshiana 7 25 10 Very Poor Not tagged. 1648 Douglas Fir Pseudotsuga menziesii 27 90 20 Fair 1649 Pacific Madrone Arbutus menziesii 13 20 8 Very Poor Broken top. 2042 Oregon White Oak Quercus garryana 25 90 20 Fair 2045 Big leaf Maple Acer macrophyllum 6 20 20 Good — 38303 Douglas Fir _ Pseudotsuga menziesii 28 90 20 Good 92032 Douglas Fir Pseudotsuga menziesii 14 80 20 Good 92048 Douglas Fir Pseudotsuga menziesii 22 _ 100 20 Fair 92074 Big leaf Maple Acer macrophyllum 13 20 8 Poor 3 stems 7,7,8. Topped. 92075 Big leaf Maple Acer macrophyllum 5 20 5 Poor 92076 Big leaf Maple Acer macrophyllum 10 25 10 Poor Topped. 92077 Big leaf Maple Acer macrophyllum 10 25 10 Poor Topped. 92079 Douglas Fir Pseudotsuga menziesii 20 80 20 Fair 92084 Douglas Fir Pseudotsuga menziesii 29 110 30 Fair 92085 Big leaf Maple Acer macrophyllum 6 30 15 Fair 92110 Pacific Madrone Arbutus menziesii 10 30 15 Poor 2 stems 7,7. Blight. 92114 Pacific Madrone Arbutus menziesii 7 35 15 Fair 92116 Douglas Fir Pseudotsuga menziesii 23 100 30 Fair 92124 Douglas Fir Pseudotsuga menziesii 36 110 30 Poor Die back in crown. 92125 Pacific Madrone Arbutus menziesii 6 30 8 Fair 2 stems 6,8. 92126 Pacific Madrone Arbutus menziesii 6 30 10 Fair 92131 Pacific Madrone Acermacrophyllum 5 25 8 Fair 92132 Big leaf Maple Acermocrophyllum 15 55 30 Fair 2 stems 10,11. 92133 Big leaf Maple Ater macrophyllum _ 13 20 25 Poor Broken top. 92146 Big leaf Maple Acer macrophyllum 14 55 20 Good 92151 Big leaf Maple Acer macrophyllum 19 75 30 Good 3 stems 9,11,13. 92152 Big leaf Maple Acer macrophyllum 16 80 25 Good 92153 Big leaf Maple Acer macrophyllum 6 25 15 Fair 92154 Douglas Fir Pseudotsuga menziesii 8 _ 55 10 Poor Suppressed. 92155 , Douglas Fir Pseudotsuga menziesii 12 55 25 Good 92156 Douglas Fir Pseudotsuga menziesii 21 90 25 Good 92157 Douglas Fir Pseudotsuga menziesii 23 90 25 Good 92158 Douglas Fir Pseudotsuga menziesii 25 90 25 Good 92159 Douglas Fir Pseudotsuga menziesii 24 90 25 Good 92160 Douglas Fir Pseudotsuga menziesii 9 70 15 Poor Suppressed. 92166 Big leaf Maple Acer macrophyllum 11 50 20 Good 3 � 41 (0 0 NO. COMMON NAME BOTANICAL NAME DBH HEIGHT SPREAD CONDITION COMMENTS 92169 Douglas Fir Pseudotsuga menziesii 6 25 8 Good 92185 Big leaf Maple Acer macrophylfum 20 50 20 Fair 2 stems 14,14. 96419 Big leaf Maple Acer macrophyllum 8 45 25 Fair Broken top. 96423 Big leaf Maple Acer macrophyllum 18 75 20 Good 3 stems 9,10,12.$ 96559 Douglas Fir Pseudotsuga menziesii 25 85 25 Good 2 stems 22,12. 96560 Douglas Fir Pseudotsuga menziesii 27 90 20 Good 96601 Big leaf Maple Acer macrophyllum 11 70 25 Fair 96602 Big leaf Maple Acer macrophyllum 11 70 20 Fair 96603 Douglas Fir Pseudotsuga menziesii 8 50 15 Poor 2 stems 6,5. Suppressed. 96605 Big leaf Maple Acer macrophyllum 10 70 20 Good 96606 Douglas Fir Pseudotsuga menziesii 19 85 12 Good 96607 Big leaf Maple Acer macrophyllum 8 40 10 Fair 96609 Pacific Dogwood Cornus nuttalili 6 30 10 Poor Suppressed. 96611 Pacific Madrone Arbutus menziesii 12 40 15 Poor Blight 96612 Douglas Fir Pseudotsuga menziesii 28 90 20 Fair 96613 Pacific Madrone Arbutus menziesii 11 40 15 Good 96614 Pacific Madrone Arbutus menziesii 8 20 15 i Poor Broken top. 42 �oS EGQ-Tj40C 4c-ir 1p • 4 .57..). 5 el?PAR11`1 ' Waluga Reservoir 2 Lake Oswego — Tigard Water Partnership Resource Conservation Protection Area Report September 11, 2013 Written Statement for Lake Oswego/Tigard Water Partnership Prepared For: Black&Veatch Corporation 5885 Meadows Road, Suite 700 Lake Oswego, OR 97035 Contact: Sean Goris 503.443.4418 Prepared by: GreenWorks PC 24 NW 2nd Ave. Portland OR 97209 Contact: Ben Johnson 503.222.5612 GREED NES EXHIBIT F-5 LU 12-0044 191 Waluga Reservoir 2 Land Use Application RCPA Report Table of Contents 1. Project Information 1 2. Applicable Regulations 2 3. Sensitive Lands Overlay District 2 4. Maps and Figures 10 192 I. Project Information Applicants Lake Oswego—Tigard Water Partnership—Eric Day City of Lake Oswego Land Use Permit Applications Sensitive Lands Overlay District Property Address: 4800 Carman Drive Total Lot Site Approximately 6.8 Acres Zoning: Park and Natural Area (PNA) Project Summary The Waluga Reservoir 2 (WR2) is a new 3.5 million gallon concrete reservoir to be located in the City of Lake Oswego to the northwest of the existing Waluga Reservoir (WR). The existing 4.0 million gallon Waluga Reservoir was built in 1981 and it is anticipated that an increase in water storage capacity of about 3.5 million gallons will be required to serve future demands forecasted for the Lake Oswego and Tigard service areas. The new reservoir will be constructed alongside the existing tank to meet these additional water storage needs. II ice `p r :: s- I- i'.4-1".,', A:i ,.:.'.'I, .,.' .4.„ ,1Z.,,s: - \:_, /-�J_ �' -� , ,,,_ , . . Aerial image of site (See FIG-1 in Land Use Drawing Package for Property Lines) Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 1 Development Application 193 IL Applicable Regulations • City of Lake Oswego Community Development Code [LOC Chapter 50] LOC 50.05.010.1 —50.05.010.4.g (Sensitive Lands Overlay District) IIL Sensitive Lands Overlay District [LOC 50.05.010.1—50.05.010.4.g] The purpose of the sensitive lands districts, as designated on the City's Natural Resources Inventory Maps,is to protect the functions and values of wetlands, stream corridors and tree groves on lands with environmental or natural significance. The City's Natural Resources Inventory Map identifies a Tree Grove on a portion of the site and adjacent sites (Fig. 1). Therefore, delineation of the RC resource on the site and determination of the RC Protection Area is required prior to development.The Waluga Park site southeast of the development area will not require an RCPA as no trees greater than 5" are being removed. The RCPA designation in this report only applies to the reservoir site. 50.05.010.2 Applicability 1. This Article applies to all lands designated as RP or RC on the Sensitive Lands Map and Atlas. 2. Sensitive T-ands Development Review Required a. Development within: a, The RP District, as defined in LOC 50.05.010.6,b; ii. The RC District or within 5 feet of the RC District boundan,.;or iii. The construction setbacks established by LOC 50.05.010.6.c (2)(2)(A) (as shown on maps in the Sensitive Lands Atlas), shall be subject to the standards and crrterra identified in LOC 50}07.004.8.c... RESPONSE: The site contains a significant tree grove designated as an RC Overlay District on the Sensitive Lands Map and Atlas (Fig 1).Part of the development is proposed to occur within the RC District and is not exempt from review. Therefore the proposed development is subject to the code set out in Chapter 50. 50.05.010.4.a Rebuilding Nonconforming Single —Family or Duplex Dwelling Located in RP or RC District or Construction Setback. RESPONSE:No new single-family or duplex dwellings are proposed as a part of this application. Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 2 Development application 194 50.07.004.8.a Criteria for Designating Property within an Overlay District. 1. Goal5 Analysis Required. In order to include an individual prope , a portion of a property, or a group o_f properties within an RP or RC Overlay District, the reviewing body shall find that the resource on the site or sites has been ranked and evaluated through-an Economic, Social Environmental and Ever (ESEE) Process Analysis ira compliance with Statewide Land Use Planning Goals and merits a Resource Protection (RP)and/o'r Resource Conservation (RC) designation... RESPONSE: In 2010, the City surveyed and delineated the RC district on the Waluga Reservoir property (Fig. 2). An ESEE Inventory and Analysis was completed for the property in 1995 by Winterowd Planning Services (Fig 3). This criterion has been met. 50.07A04.8.b Removing an Overlay District Designation RESPONSE: No Overlay District Designation removal is being requested as a part of this application. 50.07.004.8.c Environmental Review An applicant,fiw a development subject to this Article pursuant to LOC 50.16.01..5 shall comply with: I.For exempt development under LOC 50.07.003.12.a occurring within an RC or RP District or its associated construction setback the applicant shall.., 2. For development other than under subsection (1) above, the environmental review requirements in LOC 50.07.004.8.d to 50.03.010.4.c and LOC 50.05.010_5.b to 50.05.010.5,c (f br RC Zones), LOG 50.05i 010.6.b to 50.05.010.6.d(for RP Zones) or LOC 50.05.010.6.e (Special Standards for the Oswego Canal), whichever sections are applicable. RESPONSE: No exempt development is proposed in the RC District, therefore the proposed development shall comply with the applicable environmental review requirements from LOC 50.07.004.8.d to 50.05.010.4.c and LOC 50.05.010.5.b to 50.05.010.5.e (for RC Zones). 50.07.004.8.d Delineation of Streams,Wetlands, and Tree Groves 1. Preparation/Criteria. I xapt as provided in subsection (4) of this section, an applicant for a development subject to environmental review shall first delineate the stream, wetland or tree grove. Delineation is a more precise, site speck determination of the location of the tree grove or water resource prepared by a qualified professional. The delineation shall include a swap showing the delineated bounda y to plus or minus 2 feet. The delineation map shall also show the protected riparian area, f required for the particular resource. Resource boundaries shall be delineated as follows: a. Tree Groves. The RC District shall be delineated as follows: i The boundary of a tree grove shall be measured at the outer edge of a contiguous tree canopy based on aerial photos and/or visual field observations, but shall not include any tree canopy that is within a wetland or below the trip of the bank of a stream, and... Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 3 Development Application 195 RESPONSE: The RC District boundary was delineated in 2010 by Jonna Papaefthimiou, natural resources planner for the City of Lake Oswego. Toby Bolden of Westlake consultants completed the site survey in 2010. (Fig. 2). The boundary follows a tree grove measured at the outer edge of a contiguous canopy as determined through aerial photos and visual field observations. The approximate size of the RC District on site is 235,666 sq. ft. (Fig. 4). 50.05A10.4.b Modifications to Dimensional Standards and Setbacks of the Underlying Zone RESPONSE: No modification to the dimensional standards of the underlying zone is being requested as a part of this application. 50.05.010.4.c Density Transfer RESPONSE:No lot density transfer is being requested as a part of this application. 50.05.010.5.a Resource Conservation(RC)District Environmental Review Standards; Applicability and Purpose._ In addition to compliance with LOC 50.05.010.4.b to 50.05.010.4.c, applicants for development which are subject to environmental review prarmant to LOC 50.05.010.2 on proper*containing an RC District shall damply with the standards contained in LOC 50.05.010.5.b to 50.05.010.5.c, in order to: 1. Ensure that new development and alterations are compatible with and maintain the functions and values of resources within the RC District;and 2. Limit the amount of disturbance allowed within RC Districts, while permitting reasonable development of proper,. RESPONSE: The site contains an RC District and therefore is subject to LOC 50.05.010.5.a. The amount of disturbance allowed within the RC District is limited while still permitting a reasonable development of property. New development on the Waluga site will be compatible with and maintain the function and values of resources within the RC District. 50.05.010.5.b RC District Protection Area LOC 50.05.010.5.b required the applicant for a major or minor development permit containing an RC District to designate a minimum of 50% of the RC District after delineation as the 'RC Protection Zone," RESPONSE: As shown on the map submittal (Fig. 5), the proposed on-site RCPA is 50.2%.The entire site is 235,666 sq. ft. and the proposed RCPA is 118,315 sq.ft. Pursuant to LOC 50.05.010.5.b, in determining the delineation for the RC protection area, the following criteria shall be fleet: Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 4 Development Application 196 a. The Protection Arm shall link to oilier RP or RC lands on the development site and on abutting properties, i f snch landr are present; RESPONSE:Tree groves in the proposed Protection Area are linked to other RC lands on the abutting property of East Waluga Park, south of the site (Tax Lot 3100) and to tree groves on the abutting property west of the site (Tax Lot 1100). The proposed Protection Area maintains a consistent canopy with adjacent tree groves (determined from Fig. 2 and Fig. 3). b. The trees having DBII rrvidth greater than the median DI3FF within an RC District shall be included in the Protection Area; RESPONSE:The median DBH of trees within the RC District is 15" according to calculations using the arborist report compiled May of 2010 and submitted as a part of this application.. There are 421 trees total in the RC District and 277 trees in the Protection Area (65%). The RC District contains 223 trees at 15" DBH or larger, and the Protection Area contains 139 trees at 15" DBH or larger. 62 trees with 15" DBH and Iarger are to be removed from the RC District. (Fig 6, 6a, 6b, and 7). LOC 50.05.010.5.b recognizes that the criteria may conflict on a given site. The larger trees are dispersed evenly across the RC District, meaning that the removal of some larger trees could not be avoided with development occurring within part of the RC District. The location of the new reservoir is based on limiting neighbor impacts and hydraulic requirements. Other locations for the new reservoir were considered, however all of them impact some of the larger trees in the RC District due to operational needs of siting the new reservoir in relational to the existing one. The proposed location minimizes impacts to the larger trees on site as much as possible given the siting needs of the facility infrastructure. c: The location of the Protection Area shall be designed to protect development farm blatr'- down h_ia:zards; RESPONSE: The location of the proposed Protection Area is designed to protect development from blow down hazards. The majority of the Protection Area maintains a depth of 150'or more across reducing the occurrence of thin stands of trees vulnerable to blow-downs. The new reservoir development minimizes impact to trees along the perimeter of the property, the trees nearest to neighboring homes. Even at the closest point, the nearest home is 150' away_ The south edge of the property is connected to the RC District canopy of Waluga Park which has no development vulnerable to blow-down hazard. d The Protection Area shall protect steep slopes and resources close to water areas firma potential erosion and water quality v.'t'acts; RESPONSE: There are no water resources on the site. Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 5 Development Application 197 e. The Protection Area shall protect habitat and travel corridor RESPONSE: The proposed Protection Area is located to be contiguous with canopies on abutting properties to the south (Tax Lot 3100) and west (Tax Lot 1100) of the site, thereby maintaining a contiguous wildlife habitat and travel corridor. f The Protection Area shall be designed to protect a contiguous canopy and a clustered configuration that does not,fragment lands within an RC District; RESPONSE: The proposed Protection Area maintains a contiguous canopy with the RC District Tree Grove south of the site. This connection will be further strengthened through the removal of invasive plants and replanting with native species. g. The Protection Area shall consist of.viable plant,and n ildl fe communities; RESPONSE: The site is heavily wooded with dense canopy cover and understory shrub layer. The understory is predominantly comprised of invasive plants. Clearing and grubbing of invasive plants from the understory will be followed by the application of native seed and native species plantings. These restoration efforts will improve the ecological viability of the plant and wildlife community (Fig. 8,Fig. 9. Fig. 10). h. The Protection Area shall maintain Elie scenic qualities of the site. RESPONSE: The project site is adjacent to Waluga Park and has a distinct wooded character that contributes to the scenic qualities of the park and the neighborhood. The proposed Protection Area addresses neighbors' concerns about the appearance and aesthetic of impact of the new reservoir by screening the infrastructure with surrounding trees and foliage. The proposed Protection Area preserves the scenic qualities of the site as viewed from the park and nearby houses by protecting as wide a band of trees as possible along the site's entire perimeter. 50.05.010.5.c RC District Development Standards Except as provided in subsection 3(h) of this section, a criterion applicable to the RC Protection Area shall apply to the entire RC District if no Protection Area has been established pursuant to LOC 50.05.010.5.b. 2.Development Standards. If the proposed types cf derelopment are permitted within the RC Distract or its bruer; the development activity, use or activity shall comply with the_following standards, and the construction standards set f,lh in LOC 50.05,010,4.d. RESPONSE:As per LOC 50.05.010,5.c, certain types of development are allowed to occur within the RCPA boundary as long as development standards are met. The proposed development in the RCPA is only for resource enhancement, including the removal of Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 6 Development Application 198 invasive groundcover, and landscaping with native plants. No other development is planned to occur within the RCPA. g Resource Enhancement Pr jects. Resource enhancement projects shall remove;only invasive vegetation, and shall plant only vegetation within the RC District or Protection Area, if one has been established listed on the Plant List.AID,pathways or straactures proposed as part of a resource enhancement project shall retain existing trees. RESPONSE: Proposed resource enhancement of the RCPA will remove only invasive vegetation and replant disturbed areas with native species only. No pathways or structures are proposed as part of the resource enhancement. h. Landscaping. i. Plants. Plants used for within a Protection Area shall: A. Be adapted to local soils andgrowing conditions; B. Not be dependent on long-term irrigation, which can increase erosion and sedimentation. (Irrigation necessary for initial establishment of the plants is not considered long-term irrigation);and C. Provide food or cover for 2r ildl je... RESPONSE: Proposed landscaping in the RCPA will follow the standards of LOC 50.05.010.5.c including, the use of native plants to meet local soil and growing conditions and reduce dependence on long-term irrigation,and provide food and cover for wildlife. No plants identified on the City's plant list as appropriate for resource landscaping will be removed from the protection area as part of the resource enhancement. i. Tree Removal. Tree removal on property- within the RC District shall be sxthject to the fallowing criteria: _- . Tree removal in a RC district that has not established a RC Protection Area shall be si thject to a Dead Tree Removal Permit,.. RESPONSE: No trees are proposed to be removed from the RCPA.Tree removal outside of the Protection Area shall comply with LOC Chapter 55. 50.05.010.6.a- 50.05.010,6.d Resource Protection (RP) Districts RESPONSE: No Resource Protection Districts are on the project site; therefore these regulations do not apply. 50.05.010.6.e Special Standards for the Lake Oswego Canal RESPONSE:The project site is not located within the area of the Lake Oswego Canal identified for special standards; therefore the regulation does not apply. Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 7 Development Application 199 50.05.010.4.d Construction Standards An owner shall submit a construction plan and rrar7ative to the City liilanqger prior to any grading, clearing, or construction on a development site which contains an RP or RC District. The construction_plan and narrative shall demonstrate that the f/lowing standards will be met: i. RC Protection Areas or RC Districts where rdo protection areas have been approved and RP District shall be protected during construction with either.._ RESPONSE: A construction plan and narrative shall be supplied to the City Manager via the Lake Oswego Planning Department that demonstrates that the construction standards and requirements for LOC 50.05.010.4.d have been met. 50.05.010.4.e—50.05.010.4.g Mitigation ?414atiou is a rwdy of repair iseg or com pensating for-adverse impacts to the fimaions and values of a natural resource caused by a development. Mitigation May consist of resource area creation, restoration, or enhancement: Some examples of mitigation actions are construction of new wetlands to replace an existing wetland that has been filled, replanting trees, and restoring stream side vegetation where it is disturbed RESPONSE: The applicant is proposing to mitigate for this proposal through the planting of new trees, removal of invasive species and the restoration of native ground cover. All of this mitigation will occur on-site. Please see the enclosed Delineation and Mitigation that is being submitted as a part of this application for more specific details on the mitigation plan. Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 8 Development Application 200 IV. Appendix of Maps and Figures Figure 1. Map of Sensitive Lands Overlay per the City of Lake Oswego Figure 2. Map of RC District per the City of Lake Oswego (Westlake Consultants Survey) Figure 3. Pages from Lake Oswego Resource Areas Report&ESEE Analysis Figure 4. Map of RC District boundary on Waluga Reservoir site Figure 5. Map of proposed RCPA Figure 6. Map of trees on site and in RCPA Figure 6A. Map of trees on north site Figure 6B. Map of trees on south site Figure 7. Tree Tables Summary and Tree Tables Figure 8. Planting Plan Legend Figure 9. Planting Plan Figure 10. Tree Mitigation Plan Lake Oswego—Tigard Water Partnership WALUGA RESERVOIR 2 9 Development Application 201 202 ->'.1-4''i'_r N_'_a'4 4t_vtom odtr4.-.1_e,,,.rS-%44pyL.•,t"-iv_A--I_r',.1,"'i1l „s., rW,- --_1_:1'i"4i';_!110v*•'1.**'-o-.#'t7.i1a.-IV;„.!0 t,-Vi-l1i-.0:eL.;,-i-a,im,.,7 1rO-a'te.-1 e T=:.-±..m-.:.N R./D.47.......,V,-.k'Ni,-a_.r4:.-i,c."4,,,i 4 in6li4111t41110.1..t144.11§i7,1f.1_0 k4,-.4 10,,-e1...16-p4or..:L,i--:0u1/*-1..l 1 t ny'finL4-1.p94,i :4 1r' .. ,:.ill8ira".1" mOin Feti vLieA.—..g KmEm wO SAWE—•G.MD-Oias1r I; i 0t g f1 SENSTVE LANDS MA ra iP 1 J Willamette ' Stream River iih r1 Corridor(RP) we,,4n,l4t Jyar-)dr1 i,w:l%ok-,tT, :.i 1. IA ../. tO_ k. Wetland (RP) 13 Resource Project Site for Waluga Reservoir 2 -41L-12 ppm g' inrillitzurifinrildtAWAVir It 11 itc,,,'Ar#NwsrlurgAPAA, -, -7 er if.':041121g1 r 1 Tree Grove ,/„ -, insi nificant Tacna, ; g ; thirigr 4111livi-51k . vit,tho,,, Waktirli" ---1P1 rg: i .iy ,4. -tilr, 41 ,,, Resource -' :14::: ri . ?YAW IMP td"44',1, WIMP't 41-il 't ' , • t# 4-,‘-:;:Vm.- ,, - , - IA 4 F UMW 4,- -.0,,,,.'1*,4•01. Pr -( NIP ''''' al '' ' 77--'," Ai 46- ACi'' -2;4111m - - - - - "II M ! nnii-V7 14L:ft,Yi Vi 1 -IA *A'-''' V12 iti-' um:'7-''' ne • -- '41 Or ; rii.r, - irAl 401:140., s. ,.:7. „ ,, • - ' - .1 tin mi.- h'"'ll I- 1 u .c'7(' -_ x.:.:.:.:•:...„ . \ ...........„fieuirm _'I'-` '12" 51i,/\ g1iti,',‘• t,# -V0 reNa.-__, _ El INN ir'itial f' ___ no , ir 1 - Clindla 1 -,41 , . ' .,p.. Ot•tili.t , -„,.=,-,...k, WALUGA '-'1 " ....nn. :., e ip- PAPUC Girsi e „„. ....0,...,,c. (* 1 11.1 15Il9 SCHOOL ,b. .711111;,]'11,,:al ,.._ 'W/it"2.. _..„..,...., ,..W.E:a.ti--:- sox, - , ...,,,z-i '''. ' .%4 4.I 41.' .4.#.100:10.. AglirIP " .14 '- AkNor- \-v .• ..,.,.. ,,,......, _....iii......- ,..... ifle—iEl All !es" '7114 t ., -: ritolitilftlieCA 12" i- -": -r- -- ---- ----1.1112 - "Ni_ 'gni - 00‘‘‘\N \re Itliffi* ett$41M_Ao - *4- City of Lake Oswego GIS Services • ie. , „ ,,„, ., ::'‘ ''""4-- ----H-:2 1- a • - i ifiiten,--s-alilier 4, - -41 - wi , . 800 1600 WO FEET .6 4 4 Li g'N i du ik,- Aite4 -or iolesto w 44,„,0,, Ilk )10--- : 0 1/13 1/4 3/8 1/2 MILES ' -- =''.'\, ,,':' -L' ''''' '•,'• _ i 3,F111‘1,711116,1414-f-0111014W0tilipilk .., i, , REVISED:OCTOBER 2008 RS/GIS SERVICES/CITY OF LAKE OSWEGO..„ , ''"..' .. ' ' . . ' ""' " ,,,,fit ,,'' OA, , A S. .r • VIP, N Fig 1 _ 4 ,4- :a. 1, igigEtwEIP 6 i I04.:,.. ,49-40 : - :1',A-il irrott11651" •i ill/ , ‘0., A „.-4"4. ..,--;z__z 0 ir , .--....xir ,, 0, ,w, ...„0-, ,.. _. ,„...• IV Co Ch.) ,1 A.,\ ,,i; •41 ,,N ,,,' . ir, 1 \ I.: '•„,, 4 ,,,. \ , -----•, „.„._ _...- 1% Li , '-.,—'1 , V'in ,,st a-4 !.,. .,,..0. h it rN r‘r‘Z U U 0 XSZOSLAC/EATIO A P c-, ,,, 0,f, ,I. ,-, . '• . \ 4. souNDARY 0 EET IS to".. :*.i A A r L GTH1'25 cr/ 9t• 0 x 2 t 1••• 116 , ..:,...... , ..„::,..,„:„....., 7ftt \ ...,..„:„....,.:.,........, \ .. ::: :::::: ..:ii:::?::::.iimi:fili ,.?: ::.::-::.:i irc •-:.;;!.ii.,:m_:..vmr.,. -;,:.:i:-• .i]::"......,....m,,..vii- . : :m.ii; .::i ,.. SCALE. -::::: :::?..:.a.:::,,i,...i.:i.: ::.;;: ..5.g..:::.::vgi:;:,:ini::.: iiii: ..i...]1:•;-: ::.5,,,i;r:.:,,it..,. . 46'7 4 \t. i 4 lia•IIIII .:: :.:::;:::::"-•- c-Ig: '::,:M:iiii:.•:..;:i.:;-:]-,:. s. ,....::;:.;,.-: .. 44.:::i.i: milt -..y.ji J.,/,::if:ui.:.i:,:::::::::.E:.•:::::v;.:::: :':. \i • I Alt. '...:: ::-.i... .c,'Y.:::i:.: 1- 4.1 a ......4x:::::::,..-::::t:::_i,:::::::?.:::::::::::,-:::::,:.,.. SERVATiO. cON -y FEET •-•-:tit7+-,:ii::::M:::;::%::':::-•Viktd .: is 27\22 BOUNDAK n i...,:i:ilini:?::::::::.:,.....,,,-,irsi IARE trS RESOURCE:,.,:;;: .. LEGTH.75- L A I K;]:: S.9,1 cr:..-Z.:::::.::ii::.}i'CIIY pAkCa ll i:E::.:7.*:.:',,,-;*.: aligilliell ....... FEE 55-977 ...7.7.::::n7f.,:l.!::::-:;. • ..., AIL 4 tr, ,;.,:::. ,:::::::. tioxy. F.4cf.........:::::•::::::::::.:::::: ::'$:::•::::k1011111 1 .:: '': ZW:-.ii':.:::).,ii...iWaiiii:;::".e..-'7--"'--- \%,:.:,x,:::: la .± --:-•••..: 120 ; '.'::-: :. 9.?: ::•:::-::.::::::::.,::::E•ii:::!:::.:i:i:::::'.". 32 ..x....-:-:-- _............:::::::: ::::::::::;:;::::::**:.: 31.,Atdi .....:imK::•%:::,..,....,....:.... . . . ..--i::::: V. .........-......•••••:::;:„.•••,,,::*K:::::.:niiiiftimmm,:ii::::::;::::::::. AA ItYX .1.1j1.:::,.i.i.:::i.A..,.;.iii..4v,,;:,....,_:..,,,.,,. :.-..-:::-.,..:::::::::x-6.:;.,,:::.:=:!:3':,:::..,,,* :.:: :::,:i::;:::iii-:::: ::..*, ;•,:.- .51..z-,:s... .:::: ::Riiii :-.ii,...: ]:,i;i::iin:.ii:::*.::::i:A.::::::::§:.:.:: : :m:..R.:.•:.: :?.,i,. .:...-..m.-4,i-N-..,,. .:: 272 t .-f::::?..7i:-:::::- ... ,;fii7,.:.:.:i:.;::...:iii'=ir:...-52:i:.. i,:: :!ii::.::.*if:„i!?.7:!.ii.l.i..".1 ":i.::.,:ift:.:Zi ;:a • --\ ..---•,...,.....,-"s5!:,,:-:::::::.;.i.,:::::.:i:::::.i!:•-::::.:::::::::::::::::::::.:-.;:;.*,:::.:i,..,*:,,!::::::::.-*,;K:.:_x:: ::ft,:::**. , 7 .... •. ....::::.::•••:•::::4-:,:,: -).::•:,:-::::-...z.:•::::;•:•::::-:,x.::•:-;;;;•;,;:•••::::,:•::-:.:,t:,:-::•:•::,::•:,::,..:::-..:-.::•:.:•-x-::-:-:•:.:::-;:-:•, 6 2 d ,..--:-:-:::•:':'-•:•::: :::::....*:::::•::'::::'- '''i;::.::::::::::::.::::-::::S.:,$'1,:kik!..:1:i:f:;:"-"i::::::::: :::47::]:::E::::;;:,*::::*'.:::::::::::::i::::::i.-:::::::!; 41 - iiK::::!;: : ::•:•:,.::..;',.. ; .-.:'.:::::i.-:-.§:i:::' ...!ii:ii-:':f.:::.:,W:i•;*;•:::?: ::::.:,::7ii?..M:';•:::-:`,-.. ,:7,!':::iii:';',.::-,:jii',iii:ii.,'i,:•::..i::,:,::iiii,?,:. _ iP)..,.:.......:.:3:... ilii*?:.‘:.1:: :' • :i-i:,i.i' ii,: ii :::!ii.ft::•::ii'•ii:l'•:.-:::.i.:. 1=.I,,ai.:a_.;,,il,...:: ,;-::.ii,:.1.,...i•-,., A ‘P -::i:ii??,,,„::::::•.- i:::::::::A:ii-. ...4i...,:, ,,,,,,,:i,„.. ... ..,:•:;.•.:,:m....i„.,:i.::::::„.,Kiiki.:*,i,.,:;-•:i.,.,,i;iii..g.:1: :.v. -..;--' . - i...:••i:i !-:•:::.::::'.::':':::•:',.::•:: :.:i:??.:*...:':;iimi-•i:•,.,i.::,.i.,K,: il•. ,%.,.:-: :,:ink,':::::"-• iiK*:?:!,,,,.,.••:.,:i:::::.:i:K, -:*::::::;,:: :::,-:::.x:::::.:::::::....;,....,,,:::::•:,:;**:::::::::•,..,,,!::;:„;:::.*:iff i n •i;i3i:i$::::::;:i*::::::,-. ':•:::::.:?-:':i.*.:E,:i:i:-.....::::?.*if:::::::,•: ,... ..:K,,z:1-...,*.,:i ::::i,::.• n ,%;::::::::::!K:::::-.: .: :::V.:I.M.:i';:::•:_;..i.i.:_ir;:i.:.t::::g:::: i...R:;:i.::::.. RESOURCE it • :::':::::n.:',.!::::::.:::,•:-........ .::: -.•.ii•:'....W:::i:::,'D!.3i::::::ri.,i:'::.:::':::i::i:::iii::•:':'''.. scocurINTAvRAJIDN 1 220 FEET 224 1/2 ::-.:::::.i::i.::::-,: :::::::::::•:. ;:.:.;i:::;:.::?.. ,.i.:::$..- 7:?..iiti:ii: utiGTH.2,_ CITY OF ...z :7 :::.i...::...::.::::7:,.;;;:0i...1:,: ::...)::....1.*::::::. i.n. LAKE .:M::::' :::::: ::::..:::'%R.:.,:!.:::::::::::'::i.':: oswEGO ft::::Ja:ii:i:ii:' 1.241,81 570 ';',i:::: ::'..:::::: :::-:, •• ,::i:::,::::::.4:.,..7:::',,::::::::*:::;:: ::„-::, CITY °FP PARCEL FEE ?S W E G° 1 PACE 5°5 ::%:*:::::•'.::::::•:::::,,,,,,„, ,•:-::,::::K::7•7.4:::,...‹::i*;:;i::::•::::::i: rt 4112-1 ail 7 .::::.:::.:::%,::::::::::,:;::::,,,....f...,.:::•,,,::.,....::::::::::..,,,,,,,::::,,,,,--;:..„. „ n6414 ACRES P-. t Al AO' i ',..:j'i::.ft:ii;iii.Miiii %;','..i:.z...:......:iiii'.{:-.-;z: RESOURCE A :g.::.0"Riii.:iii;:iZf.::.ii:s.::iiiiie:1:,i,'••• • : :',.::::::*::::*s-i:::•,':::::.;::::::: : :::.;:,:::,::. FEE #R :::...i..iii-?::.;;:,.:::,::: :::xi:;:::•.:;::: ::.:.::::ii:::::•,:: RESOURCE RvATIOr'l -.:,i,iii::1::?-::•,:ii::::" .:, ;ai:!0:.]•:.iiiiii. :•::. c0NSE .y :Ii:.::'::::iii:::•M:::.i:::i;i :ii :i :. BOUND Ars 200 FEET ::,;:;::::i::::.::::*.:•:-:-..-. . LENOTH=1. K::.:.7:-:•:-:::::•: ::::::::-' 126 :::":::::i:K::-:-:-,-,..-.... 2.50t ' .•-.--,:.:-:',::::::::-:::::: i'A=.71 0 0± RESOURCE .. ....;;:ii:::' '::.:::*it:i:::::i:i::.- ..,,,wsERvATIOr4, :.Zi:.i'-:.?:').:..ii,. ...'i $,;•-. .:1.:.:::;-.:.. ::i."::::.,::::,:-t:::.::::: ::'x': . '-',.*•.-7.:.7-*i:::: ::::::. c--'-^- (Typ CAL) ::.::st';::*.::::.?-:.:•*:-rii: AREA 7.i:.::::: :::K:-.:.:*„.:::::::: ::i:::•.;-.1::.:.:i- ::-:.. .:-I....M.1::::;-:::::::i:'!;.:::-':7,...::::i::::!-_,,...:::..,...iiil;.:::!:t.::11'-:1,:.-il;'..::.:::41. :;.3.. ...i:ii;i:•::::::.;.:::,:::::•:*:;:•:::•::=;.::::::::: ..;:!:i::::::. ..,_;::::::K:::::i.,: ::i:Mii::::. :7:::::.:: ::•_::: :"::::,:;.::...>.:,:::.:::".: :':i..:*'5 ":•:::ii;:ci•?::::::::::-".:::•'%:::,,•:.7:::::...:•.7-:::::::.?::.:7:::.'.!.:::.:?'':i.K::::,:.:ii?IT:i:iii:.*iiM.1::izii::;-::::'::::.:1::.:?; :',:.**.: *K:: :-.-:.s.,:it.ii;:i::i."--ii:;:i8,:.: :::5.:.-i.::1:: :i:.*:i;i::;::::::K::.:.:-:•,: x:.::,:!.:i:f..,:i.•::-:::.,: i:::mi.::.::::::i:::,:. .:::. ',:':''',..:.::::::..:.:::i.:i!::KIL:.':-::::::::•:::;::.::::.:-::-:.7.:::.7.•:;-::::::......::::..7,,,;.:,..:.;.,:.::,:„..:„.:,,,,.:...:.:;. ._;,., ..,:....;.x.::,......:..;:„.... REGISTERED L ii...:A!::::: :;:-::-::::....: :-.:::.*:::...,:i'::::i*:::•5*:::::::::-..:::,::::::-::::.::::..,.....:::-:;::.:-:,.,:,,..:.::::.....:...:,,,.., ;....,..;.:.,...... ...'........ ... 1 pROFESS. v°ENyA0R-1 U LA S • ':.-: ; stL--1 DATE BY °6/2611° 1'4 WoNstESLTANTTLSAKE MPG 111 c G • NI NI, G pLA, - N. * siiRVEYIN 82, [ INN DRA 1 atItia:1?67 I I OREG011,4 JULY 1 3.B201jDEN cHEcKED By TOB ENGINEERING n7/30/10 Aell'IC CORPORATE PAR TOBY G" 7LS'-- VIsIONS _____ I 1:511.5 %EGON g7224 I Fin 2 -- - -0-37 RE .., TicARD. NO- 458-7'(b1) JOB .--- 6 1 11 2—31— RENEWAL 1 — 204CENTER SLITE 150 FAx 1 Lake Oswego Resource Areas Report g p & ESEE Analysis A Report to the City of Lake Oswego Planning Commission and City Council • ir Lake Oswego Planning Department April 4, 1997 Revised July 15, 1997 _\ Based on the 1994/1995 ESEE Inventory and Analysis prepared by Winterowd Planning Services Fig 3 205 Lake Oswego Resource Area Report & ESEE Analysis Lake Oswego City Council Lake Oswego Planning Commission Mayor Bill Klammer Councilor Bill Atherton William Beebe, Chair Councilor Bob Chizum Robert Able Councilor Heather Chrisman James Johnson Councilor Tom Lowrey Dick Olsen Councilor Craig Prosser Lawrence Ruby Councilor Karl Rohde Ken Sandblast John Wells Lake Oswego Sensitive Lands Program Sub-Committee Lake Oswego Staff John Lee Douglas Schmitz, City Manager Tom Lowrey Tom Coffee, Assistant City Manager Larry Magura Jeff Condit, City Attorney Julie Morales Ron Bunch, A1CP, Senior Planner Christine Roth Hamid Pishvaie, Senior Planner Craig Walkenhorst, Associate Planner Lake Oswego Boards Deborah Lev, Natural Resources Coord. and Commissions Catherine Clark, AICP, Associate Planner Andy Harris, Surface Water Management Committee for Citizen Involvement Specialist Natural Resources Advisory Board Brian Ellingson, Planning Aide Development Review Commission Barbara Dillinger, Administrative Assistant Professional Consultants Winterowd Planning Services o LAKE osw Salix Associates, c.11fro Environmental Consultants Esther Lev, Environmental Consultant r" Fishman Environmental Services .00111111181, • OREGON 206 TABLE OF CONTENTS ❖ Summary and Key Findings ••• 1. Introduction • Purpose How to Use this Document Acronyms Organization of the ESEE Inventory and Analysis + 2. Inventory Method & Analysis Resource Planning History in Lake Oswego 1991-1992 FES Inventory 1994-95 WPS/Salix Inventory 1. Location and Quantity 2. Quality and Significance 3. Impact Area Affected Previously Inventoried and Fully Protected Sites ❖ 3. Regulatory Context The Increment of Regulatory Change Stream Corridors and Buffers Wetlands and Buffers Upland Forests Distinctive Resource Areas ❖ 4. Generic ESEE Analyses Introduction 1. Win-Win Situations 2. A Few Useful Generalizations 3. Conflicting Use Categories 4. The Focus of Each Generic Analysis Category A: Consequences Analyses Of Fully Protected Portions Of Resource Areas Category B: Developed Properties Category C: Vacant & Underdeveloped Residential Properties Category D: Commercial and Industrial Properties Category E: Public Facilities, Active Parks & Schools Category F: Native Vegetation Removal & Excavation 207 ❖ 5. Site Specific ESEE Analyses Resource Area#1: Mountain Park Resource Area#2: Ball Creek Resource Area#3: West Lake Resource Area#4: Carter Creek Resource Area#5: Waluga Resource Area#6: Lake Grove Resource Area#7: Railroad Resource Area#8: West Bay Resource Area#10: Canal Resource Area#11: Blue Heron Resource Area#12: Cooks Butte Resource Area#13: Femwood Resource Area#14: South Shore Resource Area#15: Lost Dog Creek Resource Area#16: Cornell Resource Area#17: Hallinan Resource Area#18: Glenmorrie Resource Area#19: Marylhurst Resource Area#20: Birdshill Resource Area#21: Tryon Creek Resource Area#22: Lake Forest Resource Area#24: Boca Ratan Resource Area#25: Iron Mountain Resource Area#26: Forest Highlands Resource Area#27: Springbrook Resource Area#28: Carman + Appendices A. Resource Area Maps B. Salix Field Sheets (separate attachment-notebooks on file in Planning Dept. - PA 2-97 Exhibits 14 & 15) C. Resource Area Spreadsheets D. Table of Priority Properties E. Open Space Economic Analysis F. Significance Criteria G. Significant and Insignificant Subsites H. Table of Potential Additions (1-B Sites) I. Support Documents and Tables 1. Federally Listed Endangered&Potentially Endangered Species in Clackamas County Note: Resource Areas#9 and#23 were determined to be insignificant and were not included in the ESEE analysis 114 208 Site-Specific Significance Determination and ESEE Analysis: Waluga Natural Area (NA 5) Natural Area Map: 5 Significant Subsites: 6 Resource Area Acreage: 43.3 Approx. Stream Corridor Length: .3 mile Composite HA Score: 59 Applicable Zoning Districts: R8.5,R15,PK Location and Quantity Natural Area 5 is located in the southwest quadrant of the Lake Oswego Planning Area. NA5 consists of three wetlands and three tree groves located south of the Carman Road-Waluga Drive intersection,on both sides of Waluga Drive. The wetlands and two tree groves (TG5, TG6) are mostly within Waluga Park. TG5, almost seven acres, is on the moderately-sloped north side of the park, adjacent to W16. TG6 is a four acre forest in the north side of Waluga Park. TG8 is privately owned. W15a, Wl5b and TG8 are on the east side of Waluga Drive, and are adjoining. Three acre TG8 is adjacent to W15a. The three wetlands total just under thirty acres. Quality NA5 is significant because it has a weighted wildlife habitat score of 59. A seasonal stream flows through W16. Most of the trees are second growth willows; some black cottonwood and Oregon ash are present. A notable feature in this subsite are the quaking aspen trees. W16 is a high quality, unique shrub-scrub wetland. W I5a is a forested wetland with an uncommon mix of Oregon ash and Oregon white oak, a tree not normally found in wetlands. The shrub layer includes rose, spiraea, and hazel. This subsite has a low level of disturbance, and rated the highest score in the inventory for a forested wetland. WI 5b,however, has been used by the City as a dump for fill and debris. It is highly disturbed, but continues to support some wetland vegetation. TG5 is an evergreen forest dominated by Douglas fir. Big leaf maple, madrone, cherry, Oregon ash are also present. The shrub understory includes seed and berry producing plants that provide 111 Waluga Natural Area WPS....Page 5-05-1 209 Site-Specific Significance Determination and ESEE Analysis: food for wildlife. The adjoining wetland enhances the tree grove's habitat value, because animals can obtain water and have additional sources of food and cover. TG6 is a mixed evergreen-deciduous forest with a canopy dominated by large Douglas fir. Big leaf maple,madrone, and white oak are also present. The shrub layer includes salal, and a variety of seed and berry producing plants which provide food for wildlife. TGS, TG6, and W16 are connected and create a wildlife travel corridor. TG8 also has a Oregon ash/Oregon white oak forest, made more special because it is next to a stand of large Douglas firs. The ground cover beneath the evergreens is undisturbed by nonnative species; it is dominated by sword fern. TG8's habitat value is increased because it is adjacent to wetland area WI5a. This connectivity allows wildlife to travel between the two subsites. The three tree groves rate high for scenic qualities, and five subsites have significant education opportunities. Natural Area 5 Subsite Analysis Subsites within NA5 were grouped together because they are in the Springbrook Creek drainage basin and because the six subsites are contiguous (except where Waluga Drive crosses the resource area). I Table 5.1 shows the resource category, wildlife habitat ranking, and acreage for each significant subsite which together comprise the Waluga Natural Area. We use the following abbreviations in Column 2 to identify the primary resource type: TG: Tree Grove (may include portions of wetlands or stream) IW: Isolated Wetlands, including small streams not separately labeled Table 5.1 Waluga Natural Area Subsites Subsite Weighted Resource HAS Subsite Percentage of HAS Subsite# Category Rating Acreage Total NA Area Rating' W15a IW 78 12.7 29% W15b IW 35 8.1 19% W16 IW 61 9.1 21% TG5 TG 47 6.8 16% TG6 TG 59 4.1 9% TG8 TG 72 2.6 6% 43.3 100% 59 `Individual subsite HA scores figured by percentage of NA acres and then totaled. I Waluga Natural Area WPS....Page 5052 210 Site-Specific Significance Determination and ESEE Analysis: . Table 5.2 shows significant qualitative characteristics of each subsite comprising NAS. A description of significance criteria and the method used to determine the significance of each subsite is described in Chapter III of this study. Table 5.2 Qualitative Characteristics of Each NAS Subsite Significance Criteria Qualifying Qualitative Characteristics Subsites HAS Score :SO ' WI5a Large area with adlacenttree grove provides high quality,varied. habitat,including seasonal watet. . W1-6. Dense vegetation,seasonal water,connected to other subsite s_ • TG6 Vegetation diversity provides food and cover for wildlife;;connected::`. to other subs:ites.. •TG$ Vegetation.undisturbed;connection•to W 15a provides seasonal water and i4crWicf food sources::,. HAS Score 35-49 W15b Connected to W 15a providing habitat linkage;water seasonally available. TG5 Large area;vegetation diversity,connected to W16 where water available. Unusual/Threatened Species '.: W LSa Oregon ash-Oregon:white oak con l nation.. 1.6 ,: Quaking aspen. ',TGB Oregon ash Oregon white oak combination Native Plant Communities W15a Native vegetation undisturbed in all layers. TG8 Native vegetation undisturbed;Oregon ash-Oregon white oak next to Douglas fir grove. ' ater ualityFunctions W16 Large capacity for:stotmwaler stof o Educational Potential W15a In Waluga Park and near Lake Grove Grade School;readily accessible by road,bus;opportunity to study undisturbed high-quality wetland. W16 Tn Waluga Park and near Lake Grove Grade School;readily accessible by road,bus;opportunity to study shrub-scrub wetland. TG5 In Waluga Park and near Lake Grove Grade School;readily accessible by road,bus;opportunity to study incompatibility issues. TG6 Accessible by road and bus,parking available;opportunity to study incompatibility issues, TG8 Near Waluga Park and Lake Grove Grade School;accessible from Carman Road and Royal Oaks Drive. Scenic Qualities <"T05 €Neigt burl ood aesthetics;views of large:trees,wildflowers. TGG Neighborhood aesthetics;dews of.larg tte s,wildflowers. TG8.. ' `Neighborhood aesthetics views of large trees. Recreation Potential-Public W15a Waluga Park;passive recreation opportunities. W15b Waluga Park,passive recreation opportunities. W16 Waluga Park;parking and trails. TG5 Waluga Park;accessible by car and bus;passive recreation opportunities; low sensitivity to impacts. TG6 Waluga Park;accessible by car and bus;passive recreation opportunities;low sensitivity to impacts. eareattotntxal.private :;lon .': Waluga Natural Area WFS....Page 5-05-3 211 Site-Specific Significance Determination and ESEE Analysis: CONFLICTING USE DETERMINATION Previously Protected NA5 Subsites All of Lake Oswego's Natural Areas are already protected to some degree by existing Lake Oswego plan policies and regulatory standards. Table 5.3 describes whether all or part of each Waluga Natural Area subsite is protected under existing regulations. Table 5.3 Regulatory Status of NA5 Subsites Not Fully Protected by Existing Clear&Objective Fully Protected by Existing Regulations Regulations NA5 Major Essential Distinctive On LO Proposed Unprotected Subsite Stream Wetland Natural Hydrology Wetland Upland Forest Number Corridor Area(20%) Map Buffer Wt5a YES _ DNA 24&7 YES YES • W15b YES DNA 24 YES YES W1.d '; . . .: YES ..,a DNA 8 YES YES TG5 DNA 51 YES TG6 • DNA 56 TG8 YES 411 Zoning Regulations, Ownership & Applicable Generic ESEE Analyses The nature and extent of conflicting uses are determined principally by the underlying zoning district, existing environmental regulations and ownership patterns. The generic ESEE analyses are based principally on(a) allowed uses and restrictions to such uses within residential, commercial and industrial and public/semi public zoning districts and(b) ownership of specific parcels. Applicable Generic ESEE Analyses consider the consequences of full protection, partial protection or no protection for portions of the natural resource area that are currently unprotected by clear and objective regulations or by public/semi-public ownership. See Chapter IV. Five of the six subsites in NA5 are mostly within Waluga Park. The exception is privately- owned TG8, located on three lots. Two of the lots have the same owner who has written to the City that he wishes to sell the property to the City for park use. If this is not feasible,he will pursue residential development. S Waluga Natural Area WPS....Page 5-05-4 212 Site-Specific Significance Determination and ESEE Analysis: iTable 5.4 identifies Generic ESEE Analyses which are applicable to specific NA5 subsites. In most cases, more than one generic ESEE analysis applies to both(a) individual NA subsites and (b) affected parcels of land. Table 5.4 Applicable Generic ESEE Analyses Applicable Generic ESEE W15a W15b W16 TG5 TG6 TG8 Analysis A l nfky Protecte .by ::' .. .. • Al Ownership PO/P PO/A PO/P PO/A 1'0/P A2 Existing DNA DNA DNA DNA DNA Regulations' WL WL WL A3 Approved Plans _ B. Developed Properties YES YES ES YES , tC . tes den ial Low Density YES* - YES YES YES —YES Multiple-Family vacant Comrrier`c►al/ ndustr� 1 E. Public Semi-Public El Public Facilities YES YES YES YES E2 Active Parks YES YES YES YES YES E3 Schools&Other F. Excavation& YES YES YES YES YES YES Vegetation Removal `PO/A=all publicly owned;PO/P=partially publicly owned;DOS/A=all dedicated open space;DOS/P=partially dedicated open space;PO/DOS=both public ownership and dedicated open space. 2 DNA=Distinctive Natural Area;WL='recognized as"essential wetland"on the Hydrology Map;MS=recognized as"major stream"on the Hydrology Map. *The City owns W15a,and it will be part of Waluga Park. The zoning has not been changed from residential,however. To determine whether there are additional,NA subsite-specific conflicting uses,we conduct the following additional reviews. City Master Plans We review City Master Plans (parks, sanitary sewer, water, storm drainage,transportation, capital improvements program)to determine whether specific resource subsites have planned conflicting public improvements. Table 5.5 describes proposed public improvements affecting significant NA5 subsites. S Waluga Natural Area WPS....Page 5-05-5 213 Site-Specific Significance Determination and ESEE Analysis: Table 5.5 Natural Area Subsites with Public or Semi-Public Conflicting Uses II/ NA 5 Park ;:School:. :' Sewer Water > . Drainage Tra.nP«`' Subsite Develop- Develop- Improve- Iiiprove' Improve- Cation Im Number ment lent meats menu:. ' ments provcnteitts WI5a YES YES W15b YES YES W16 YES TG5 YES S TG6 YES '..'ES TG8 According to the Sewer System Master Plan, a 10" sewer line runs east-west through Waluga Park, east and west of Waluga Drive. A water tower in the northwest corner of Waluga Park East is adjacent to TG5 and TG6. No improvements are shown in the 1994 Capital Improvement Plan. Waluga Park is undergoing improvements planned for completion in 1996. New features will include an interpretive center, sport courts,play fields, and wetland enhancement. All subsites but TG8 (outside of the park)will be impacted. IP Impacts on NA 5 Subsites Identified in the Field Both FES and Salix identified potential adverse impacts on NA subsites from human activities. Table 5.6 summarizes the results of their field work with respect to NA5 subsites. Table 5.6 Probable Human Impacts on NA5 Subsites NA 5 Run-Off : Noise:.& Habitat Human':&;, Road Vegetation.: Scenic Subsite Sedimen- iligitt:. Discon- Pet USc` Kill ' Impacts&• Impacts Number tation Impacts nection :Impacts Blawdown, W15a YES E YES YES 'YES YES.: W15b YES 'YES'. YES E,-YES' . ' •YES W16 YES YES:' . YES YES YES .YES TG5 YES = YES 'YES YES YES YES TG6 YES ' YES YES': YES YES . YES TG8 YES • _YES :YES... ` YES YES , YES II Waluga Natural Area WPS....Page 5-05-6 214 Site-Specific Significance Determination and ESEE Analysis: 0 As noted in Chapter III,Lake Oswego applies a number of regulatory measures which address these impacts on a city-wide basis or at the time of development review. The proposed 25-30 foot buffer requirements for streams and wetlands minimize impacts related to runoff and sedimentation, noise and light,human and pet use, loss of vegetation and scenic impacts in a clear and objective manner. Description of Parcels Affected by Natural Resource Areas In this section we recognize that Lake Oswego's proposed program to limit conflicting uses has consequences for individual properties. The consequences for developed parcels are minimal and are addressed adequately in the relevant Generic ESEE Analysis. The consequences for vacant and under-developed parcels are also addressed in the relevant Generic ESEE Analysis, but not necessarily in sufficient detail to meet Goal 5 administrative rule requirements. If additional property-specific information is provided through the public review process,then the City needs to consider the ESEE consequences for specific properties and the affected resource subsite. Table 5.7 describes the number and type of parcels located within, or partially within,NA5 subsites. WPS used the subsite boundary line shown on the applicable Natural Area Map to determine the number of affected parcels. We determined the development status of each parcel by reviewing the applicable Natural Area Map,then cross-checking with the City Atlas to see if the tax lot had a street address. A street address usually indicates the parcel has a building. When in doubt, we verified our determination by checking the parcel's Clackamas County Assessment and Taxation data sheets,where available. Table 5.7 Classification of Parcels Affected by NA5 Subsites NA 5 Developed Parcels Vacant Parcels r Underdeveloped Parcels Subsite Res1 C/I2 P/SP3 Res C/I P/SP Res C/I P/SP W15a 11 4 3 3 W l5b 3>,. W16 1 _ - 3 . . . 6 ` S 3 TG6 1 2 1TG8 - . . 1 2 A 1 Residential 2 Commercial/Industrial Public/Semi-Public 0 L:/ESEE/REPORT?NA1-28/SSNA5.DOC Waluga Natural Area WPS....Page 5-05-7 215 i 5-' �' `_ A_,______ , r . . '.i 1 314 l - f rI EXISTING WM "' 1 g � r -- �F@ !{ � r 1�� `� �'� III l ' r I1 f !e f j -��•,'�! l ��i �` I l > PAQPqRZY eouNu^gv rrI /f I \ I i� �__ / s lib 1 1 r' � If I i� ,I i I' 1�+I I I 'I I I l I J I f ;rd� �. I 1 i --" _ v. . r 11�1 � 1ti III!fl_Li�,�;_l.-r 1 fr — Y`_ _ _ - - -.- ' _ i )\,,. 'S Ir. ti ' �r T�r I— 1 r ti'\ I r1 �' I i a, I rl / / I e4o di I I 1 i}r i\ ,1� } _ x f. U....,0...-1'... '' ''t 1')\ \2/ ,''(''' -1-....,/2- r ; . _ __—, ....\ z..,,. ::::, :z. L L:' ,,z;z: ,L===—_—_-_,==_.1 I--———--A ',/ ii ?,-) 1 ']' ';';,?".'.::''/.:;:';'75- ,,'"e''il il / ; 'i-//,f,-1 . i'' c"- ' ,: ! ,:. ..::. ,r / .:. . ,....::: r ' 1 rf.,, � i ..._.r---- - ris ,ri � ' l �v , . �, 4 - I If /, Z� 11 wz p �` Il r..;.:. I . is f C 11r ti t l i I ! =� I w I fl .t�,l I 1 r I ,I 11(4 �'' i .1h� `�ti �rY _ - I I_-� 1 2 /' �l/ f,,, ,'ll l/ frEl:rl } L II o w '1l. 1 I -,,II J —�/ rr/ I I'.I `.�__ �' ��¢ ,/ � )l'1 ti 1 I f T 1 /; LIMBS OF Co457RI,CTIdN I I Cn 1 1' r i !1 1 !I _F�- r j ��r r ‘'Ni S r O STUROANLE 1 I ! I — I CO r � 4,ry 1/' J 1 /`II /;1E 4 ' �lP� — � ¢ / }rr r` 'r r ��1.' I � gOuµp I— —I I WL'3 3 -, � I f 1 ;' Ir 1 �f LEGEND 1 1 / ,1 �' /!` ���! ' { --1 REottLII ECOMER/KOCH DISTRICT PER 74E VW OF ME OSWEGO r III _ - 1 235S65F nxraw: i f r .1; /1/ ____,— �' RESOURCE CONSERVATION DISTRICT PER THE CITY OF LAKE OSWEGO "' - CT NO. T75070 it FOR RCPA REPORT FIG 4 PRELIMINARY - NOT FOR CONSTRUCTION 5 S . s md EXISTING WR1 i S �- C dd o Etx21 , ,,,,,N : \ \ \ / , , , 61 'all 1r + _i�F---'�-- [ —+—ter v - _ �}� , — he .IE`4 I I i -� — "--- > gay H. g l y r l I I�-� I s d Ilt 1 1 r' 1 1 � �� It3 • ,),) 1 i -/-1 , / _ ( — 1 �z CO al / • /ice�.-_—, /�l—+ — e ! \ d �/ ��� ' wRz I iq 2 � - i -- � . Bala I y 0 / / i, , l k4�.1I — / LEGEND �¢ I 11I , .., vicc `'I - GRITS OFCEINSTRVCfl1MJ I. ,'-X,ECESIONATm ASRESWRCE CONSERVATION PROTECTION AREA IRWA) 0 4 J _~ 067VRRaNOE 118315 Sf I+Zic r! J'�_J/ 1 I �_ �pSRionRY IYL,I 3'a //\/ `' -- - --. RESOURCE CONSERVATION PROTECTION AREA LU/ AREA SF / 1 1 I I '.':.,- - Resource Caiuervatlon DislrlNper Rq Cltyof / rl I l ..�` - Lake Oswego(RP) ,.,..G6 iW f / -_ Ame IC 6e Oeslgnaeee ea Reeovra _ l Conservation Plgecten Anna{RGPAI naaaaEr r _ 118,B45 SS2 agrs: I' i / __ - — - — - a a, ' -d - ®bM4 M� • - f•M{r mnia rs (PROPOSED)RESOURCE CONSERVATION PROTECTION AREA a so- 17 Y e FOR RCPA REPORT 1 FIGS it PRELIMINARY - NOT FOR CONSTRUCTION IV ( J! I !I! 1 I k P N \ ,,,xt; a ®^ w fe - 'y 1 /// ' ea> "61 e I.r;; ii pp it :I..: S o• 1 . gp �; EI5TINGWR1'� as f A - 17 i // N a l ifT�� l 0 6 /:� R4l L[3 Y o 1 ` ' 44- II /t , •t 1 'I414; �1 � , L1uii1 \ \' ,t J J J rR TM��u" + .. j I I i1 §t i\o I .,�°� " _iw t \ 1 , yyyq 1 � ��.,. �t T�,I� 1 I 1 I 149 f•� i- is.• ��' J- -J S .r^alio 0( , 'S 7 e E e - , 5 �. 2. Z u I �I t, i 1 1 �¢I�� f :-J r ,5 I , r, ' (� �„� a "i Y a 3 4. �E �€ � -T_ - ug V '1 y I l if 16 I J 1 r I r— 'g g� , -• S r€ 1 3v� i --- l ‹- o 'tI11 I�' S e! �� *w9 ��r a r I'`-\. `1�', A- E a �` _ _s- + �s ' + tI_ �,}41r' I, 0�' — t ' I :+ ir. I•r _ 4 - -��.. COm a I � + I 1./•, 1 a, s 1' e� } ' I 7 1 f i to d, . I,— r: - _ rc' , rr {�-k'1 - `! 11. :I11 11. - t l; ! , f #�; �/ 1 r . Lzig9„) c� {fig _-j r l 1 'j , �` 1l Fes- o ., t I 1 .�1, ..,co r56 9,1� i , 4,3 .o 40$ -- ----I �r H w w It i ��, ' r3r l I � 1' r ° _ *a 3 ley � + r/ , +i�'I -,�•' , ! 4-r� /` `, . "-� ' I ® €i'�' + LU4 • ` / i • .'�= ,( ay I I I/I1j/i "�r�-, (r• _ rl 0o(>y° LEGEND �. CC ILy TREES 106E REMOVED 1 JJJ1 �'!il! /II O TREES TOTS/WED; ' // I 7HFSEIR'E MO PROTECT +1,(7 '1i I F _ J I 0 rREes wrtH irnHF) asrem: AR[IVE P6H: f ! f _ I INmcpTESU DETHANG0.AOYA WITHIN RC 0E/RIOT °imotev I I ` i' /')/ -- NOTES �; P ICE Y —1 �` - HOTRE{ATO PE REMOVED FROM IHERTPA o re lifer wwrre ea TREES TO BE REMOVED;TREES TO BE SAVED ��• a FOR RCPA REPORT ,,,IR FIG76 PRELIMINARY - NOT FOR CONSTRUCTION I. , 6 � / _t ' tiY _.l 906 'MI 2e y� \ Ii — — - j / ,,,2--' 1� �•/l '6 �tti `t` - _ / ` }nnl ,` • \\ _ `-_-- - _/ O� __I; za9� 99�b .�sf1. �,�_2a� �� cnwvnora '_- xi 0 of r43._✓5385_;ID 1 '_' � `—- 'd\` 461 ='4b4 -- did in �,` �� ,'..sar• -_._- IZ ---_.--- Z1. !f►®w+� -� a" . Ir Bad x31 _"_ 4 �,dt`,rs4' axs Ir r -r7..y r...` .4,- ki 96 JI H2b 1 _ _ r� _ {d.5at 449:t -i '• \ — Lam_ - �Nd9Y d34�t' _`r- d/!t. +III_ I +fir 41M1 f - -- \►�;. �� _ �`-.. .��� III' •_1,11 -'24 ` Y - `•ea a., 8: 1---•T- - - - rl 1�•O =� -I ----_ , ) :__- . T-< _ _._64 `1.;1 �'aG__`✓I �Y_- Cifir rj 4i•I Sd 2 \ -V ��II�'.. t t 2 M gV m • 4. '- __. jr'a9o` .thy e75 �1 • �`�- `\�, `14�3-�` `\~' d 8 :n y 'm 8.1.-.• .y �59tl \ I-4`y am'' ' l 69 - - Ti 1 2R ..-- —'�_.� / \ S�'�--��� _ v_ �_ '-Svc `�.-_� L '.'I` C71 699-sue -r:6 p- 12� 1 t t 699 - - � _ •--as`a__T I ti 1 • ,'f r"y 3x22 4 .. `� _`5 r ugQl 4 1—�t ti vQz u_ �4II6 p I t 1 Al2 21a f' �} p 9--lee a - -- e.}��yL _� --- Ry . Z/ylL__ 1 LAKE OSWEGO - TIGARD lU WATER PARTNERSHIP wa'g WALUGA RESERVOIR BLACK&VEATCH � �I]i�6� ��et w 0. 3¢ �.Buill.eg 6 INDrld aldifference• ere WNW.No dmoaa a'tsar O S sa:gpq:Traditional w.1en aid 4116 ley sy.ia,.,_.Iav,amr.Adman. 8$ LANDSCAPE Slack&Veatch Corporation end,EOM a1.,1 mR.wan_r�r44r1al1 a.rf r:.amr.dy "WinO- w RV amre.r1.etr,tr .tr 1 r. — -.—.�- krona IRVI,G01514r lead vu. wes., 1 0ZZ e ' 'm .—•,9aa' I. f .La �. TOrL \\1I J/ _ ir--_—_—f]41 } y2a5 1 , + � '` �"4+ i • �_ �`"�t6.,��a4r` II ice. b �'\ ',OW/ r _� � ZfZ J. . ,, .IR \ ss /aw "y loco, ...... . '.?.,:'_1 + ' id0 � I � r 1 T, i _� ` �_ +__iaQs--y.; '�-�• i 7 1 'J i \!4 lza . Iasa f - -L111y.i ��1`i �+_'1 —,.� ,009'1�03+ �Ya24 0 }s sz ti,� �,_•\11 I „'(224 m. �a.: -`uzos��'�1t2ar \. 1 `� �, 169 9]4 1' ,� J � .—•r l,T !-_.Y 1 ^ 3 N 247rY 32 _ p 909 I O- J ; -.129 , .12 _ 191D 0 .< � �_-1296\ � .yo 4�1 ' i3a71J a Y2a� �i 0.a -n-i 'Ake dr. 5 �� ' � ,xw' w: zi \.. / - . arrr ze, rs 0x m 11b25 : 70 1T _ 1269 l /. 70 77 - ` - _ Z 7P. / f24.P �x]p12T2,T - '1Y94-� I i2fis' �� r 11 F �if• 44 _ a�� I r+11 jr f ,1515 a I 2 O } �,� aI� � -/6 fii11716 Y—J I'� I1�! /. 25T, _ 535i I, J..J710 1 1 F' `'� r)9 I, _,. .- l -i612 „f'I I9'I 2 92 a� 570`� 1115f{i 1 1 I I I 4s24 1r 1, 1 f; 1f lII1 1 I i JI�; S26 `1" ,5�9 , '-. ����1I{1I 1 11'+--f l9 l['�t I y` I I • 1 P , _ 15�1�.\ P I \ -191D.�11 7441lA..:4 g ,,, $ —a +I{ II I I 1 1� �q 'l\...� i '�J7a9 1 I `,`f`'V `�t I \ _____a_ vK f 079' — — — — I , 1,, ;ram r f I ., I , I i \ ' I �� �t 111` J`l 1 1l 1 1 I, , i m 1Iti11} 1' 1 II i—f 1 , ' ' �'1 I I I I, 1 }- 1 b I 1 , II I D] 1 I, I"III 0 + i II 04 5 O 2 D Q Q _ Z 199 LAKE OSWEGO - TIGARD -1 I! a ..g i WATER PARTNERSHIP I 1y,,r'� ,..1, WALUGA RESERVOIR 1 a BLACK&VEATCH ��NHS d:,1% ate.Bccdi^98 Walld 9fdifference °••.w...n.a .sasms. .tone an MUM .u-a7 oc r. a$xxggggg ..:..,r,w,rra..,mr,,-M.robe siuw exrea....LW MI-r...,.r.I 41 CIII I N LANDSCAPE fWc9&Veatch Carpor°nbn _ .e mu,a°°°VI.e.rwlen Irv...,q.,:aworu,s9 12 Poi,. rw.w Em erge,ermlz ix rnr:n MY MEM Table 1. Summary of Tree Removal and Planting Activities Activity Numbe 9°f Trees Definite RCPA trees to be removed 0 Definite RC outside of RCPA trees to be 120 removed Definite Non-RCPA and RC trees to be removed 48 Potential RCPA trees to be removed 7 Potential RC outside of RCPA trees to be 12 removed Potential Non-RCPA and RC trees to be 8 removed Total definite and potential tree removal 195 Trees to be planted in RCPA 65 Trees to be planted in RC 120 Trees to be planted in non-RCPA and RC areas 70 Total proposed tree plantings 255 1 Does not include trees less than 5 inch dbh, dead, and hazard trees FFlg i1] All Trees to Be Removed Revised:9/9/13 NO. COMMON NAME BOTANICAL NAME DBH CONDI COMMENTS EXEMPT REGULATED REMOVE IMPAC RC DIST RCPA 206 Red Alder Afnusrubra 7 Fair 1 1 _ 207 Red Alder Afnus rubra 11 Good 1 1 208 Red Alder Alnus mbar S Fair 1 1 209 Red Alder Alnus rubra 9 Good 1 1 210 Red Alder Alnus rubra 12 Good 1 1 212 Red Alder Alcoa rubra 12 Good 1 1 213 Red Alder Afnus rubra 10 Fair 1 1 214 _ Red Alder Aloes rubra 8 Poor 1 1 216 Red Alder Aloes rubra 9 Fair 1 1 217 Red Alder Aloes rubra 6 Poor 1 1 — 218 Red Alder Aloes rubra 12 Fair 1 1 284 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 285 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 287 Douglas Fir Pseudotsuga menziesii 17 Fair 1 1 288 Oregon White Oak Quercus garryana 24 Good 1 1 , _ 289 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 382 Red Alder Aloes rubra 11 Poor 1 1 383 _ Red Alder Afnus rubra 8 Fair 1 1 384 Red Alder Afnus rubra 5 Poor 1 1 385 Red Alder Aloes rubra ii Fair 1 1 388 Red Alder Aloes rubra 7 Fair 1 1 389 Red Alder Aloes rubra 8 Fair 1 1 390 Red Alder Afnus retire 6 Fair 1 1 391 Red Alder Aloes rubra 6 Fair 1 1 392 Red Alder Alnus rubra 9 Poor 1 1 393 Red Alder Alnus rubra 10 Fair 1 1 394 Red Alder Aloes rubra 9 Fair 1 1 395 Red Alder Abuts niter) 7 Poor 1 1 396 Red Alder Aloes rubra 10 Fair 1 1 397 Willow _ Safixsp. 7 Poor 1 1 398 Willow Safixsp. 5 /ery Poo Dead top 1 1 n 399 Willow Safixsp. 7 Poor 1 1 400 Willow Safixsp. 12 Jery,Poo Broken top. 1 1 405 Douglas Fir Pseudatsugo menziesii 12 Good 1 1 444 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 445 Spruce Picea sp. 6 Fair 1 1 • Cavities. 19'E 445.1 Willow Safixsp. 13 fiery Poo #445,18'SE 1 1 #444. 446 Douglas Fir Pseudotsuga menziesii 14 _Good 1 1 1 ~ 447 Douglas Fir Pseudorsugamenziesii 11 Good 1 1 1 448 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 _ 1 449 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 21'W#450,27' 1 4511 1 Douglas Fir Pseudotsuga menziesii 15 Good E#462 1 1 459 Bigleaf Maple Acer macrophyllum Poor Part of#458 460 Bigleaf Maple Acer mocrophylfum Poor Part of#458 - • 461 Bigleaf Maple Acer macrophyllum Poor Part of#458 452 Giant Sequoia Sequoiadendron giganteum 29 Good 1 1 1 463 Port Orford Cedar Chemaecyparis lawsoniana 20 Fair 1 1 587 Vine Maple Acer circinatum 7 Poor 2 stems 5,5 1 1 1 588 Vine Maple Acer circinatum 9 Poor 3 stems 5,4,3. 1 1 1 589 Pacific Dogwood Corpus nuttalii 6 Fair 1 1 1 591 Douglas Fir Pseudotsuga menziesii 35 Good 1 1 1 593 Douglas Fir Pseudotsuga menziesii 25 . Good 1 1 1 9 stems 596 Vine Maple Acer circinatum 10 Fair 1 1 5,5,3,3,3,3,3,3, , 680 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 681 Douglas Fir Pseudotsuga menziesii 22 Fair 1 1 1 682 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 683 Oregon White Oak Quercus gorryona 16 Good 1 1 1 684 Douglas Fir Pseudotsuga menziesii 33 Good 1 1 1 685 Oregon White Oak Quercus garryana 8 Good 1 1 1 686 Oregon White Oak Quercus gorryana 8 Good 1 1 1 687 Oregon White Oak Quercus garryana 6 Poor Suppressed 1 1 1 688 Oregon White Oak Quercus garryana 11 Good 1 1 1 , 689 Oregon White Oak Quercus garryana 19 Good 1 1 1 690 Douglas Fir Pseudotsuga menziesii 24 Good _ 1 i 1 691 Douglas Fir Pseudotsuga menziesii 16 Good , 1 1 1 692 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 222 AEI Trees to Be Removed Revised:9/9/13 693 Douglas Fir Pseudotsuga menziesd _ 14 Good 1 1 1 694 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 1 695 Douglas Fir Pseudotsuga menziesii 22 Fair 1 1 _ 1 696 Oregon White Oak Quercus garryana 17 Good 1 1 1 697 Douglas Fir Pseudotsuga menziesii _ 17 Good 1 1 1 698 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 699 Oregon White Oak Quercus garryana 21 Good 1 1 1 700 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 701 Oregon White Oak Quercus garryana 21 Poor 1 1 1 702 Douglas Fir Pseudotsuga menziesii 22 Good 1 1 1 703 Douglas Fir Pseudotsuga menziesii 7 fery Poo Broken top. 1 1 1 705 Douglas Fir Pseudotsuga menziesir 20 Good 1 I 1 705 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed. 1 1 1 707 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 708 Douglas Fir _ Pseudotsuga menziesii 12 Fair 1 1 1 _ 709 Douglas Fir Pseudotsuga menziesii 40 Good 1 1 1 710 Bigleaf Maple Acermacrophyflum 11 Fair 1 1 1 711 Douglas Fir Pseudotsuga menziesii 11 Good Part of 712 1 712 Douglas Fir Pseudotsuga menziesii 24 Good 2 sterns 11,21. 1 1 714 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 715 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 716 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1 717 Douglas Fir Pseudotsuga menziesii 26 Good _ 1 1 1 718 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1 719 Douglas Fir Pseudotsuga menziesii 27 Good 1 1 1 &10 Oregon White Oak Quercus garryana 26 Good 1 1 1 901 Douglas Fir Pseudotsuga menziesii 30 Good 1 1 1 902 Bigleaf Maple Acermacrophyllum I1 Poor Broken top. _ 1 1 1 903 Bigleaf Maple Acermacrophyflum S Fair 1 1 1 906 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 907 Bigleaf Maple Acer mocrophyflum 14 Good 1 1 1 908 Douglas Fir Pseudotsuga menziesii 33 Good 1 1 1 910 Bigleaf Maple Acer macrophyflum 15 Fair 1 1 1 936 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 995 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 996 i Douglas Fir Pseudotsuga menziesii 10 Fair 1 1 1 997 Douglas Fir Pseudotsuga menziesir 25 Good 1 1 1 998 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 999 Bigleaf Maple Acermacrophyflum 8 Fair 1 1 1 1000 Douglas Fir Pseudotsuga menziesii 13 Poor _ Broken top. 1 1 1 1001 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 1002 Douglas Fir Pseudotsuga menziesii 27 Good 1 1 1 1004 Bigleaf Maple Acermacrophyflum 8 Good 1 _ 1 1 1005 Douglas Fir Pseudotsuga menziesii 13 r Good 1 1 1 1006 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 1007 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed. 1 1 1 1008 Douglas Fir Pseudotsuga menziesii 15 Good 1 _ 1 1 1009 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 1025 Pacific Madrone Arbutus menziesii 6 _ Fair 1 1 1 1027 Douglas Fir Pseudotsuga menziesii 26 Good 1 1 1 1028 Douglas Fir Pseudotsuga menziesii 7 Poor Suppressed. 1 1 1 1207 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 — 1208 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 1210 Bigleaf Maple Acer macrophyllum 12 Good 1 1 1 1211 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 1222 Douglas Fir Pseudotsuga menziesii 33 Good 1 1 1 1249 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1 1266 Douglas Fir Pseudatsugo menziesii 23 Good 1 1 1 4 stems . 1267 Oregon White Oak Quercus garryana 13 Good 1 1 1 8,6,4,7. 1268 Oregon White Oak Quercus garryono 6 Good Part of#1267 1269 Oregon White Oak Quercus garryono 4 _Good Part of#1268 1270 Oregon White Oak Quercus garryana 7 Good Part of#1269 1272 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1273 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1 _ 1274 Douglas Fir Pseudotsuga menziesii 9 Poor Conks _ 1 1 1 1275 Douglas Fir Pseudotsuga menziesii 15 Good 1 1 1 1276 _ Douglas Fir Pseudotsuga menziesii 8 Fair 1 1 1 1277 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1278 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 223 All Trees to Be Removed Revised:9/9/13 1279 Douglas Fir Pseudotsuga menziesii 8 Fair 1 1 1 1280 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1281 _ Douglas Fir Pseudotsuga menziesii 11 Goad 1 1 1 1285 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1 1286 Douglas Fir Pseudotsuga menziesii 30 Good 1 1 1 18'E#1286,16' 1286.1 Cascara Rhamnus purshiana 6 Jury Poo 1 1 1 NE#1285 1287 Douglas Fir Pseudotsuga menziesii 8 Poor Suppressed. 1 1 1 W 1409 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 1 1 1410 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 1411 Black Walnut Jugians nigra 16 Fair 1 1 _ 1 1413 Common Apple Mahis sp. 8 Poor 1 1 1 1415 Bigleaf Maple Acermacrophyflum 15 Poor 1 1 1422 Cascara Rhamnus purshlana 6 Poor 1 1 1510 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1 1511 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1 1514 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 1515 Douglas Fir Pseudotsuga menziesii 11 Good 1 _ 1 1 1516 Douglas Fir Pseudotsuga menziesii 10 Good _ 1 1 1 1517 Scarlet Oak Quercus coccinea _ 11 Good 1 1 1 1518 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1519 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 1520 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 1 1521 Douglas Fir Pseudotsuga menziesii 7 Good 1 1 1 1522 Douglas Fir Pseudotsuga menziesii 12 Good — € 1 1 1523 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 _ 1524 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 _ 1 _ 1525 Douglas Fir Pseudotsuga menziesii 5 Poor 1 1 1526 Douglas Fir Pseudotsuga menziesii 13 Good 1 1 1527 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1528 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1529 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1540 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1 1541 _ Scarlet Oak Quercus coccineo 13 Good 1 1 1 1542 Douglas Fir Pseudotsuga menziesii 11 Goad 1 1 1 1543 Bigleaf Maple Acer macrophylfum 6 Fair Same tree as #1544&1545 1544 Bigleaf Maple Acer mocrophyflum 7 Fair Same tree as 1 1 #1543&#1545 Same tree as 1545 Bigleaf Maple Acer macrophyllum 5 Fair #1543&#1544 1546 Douglas Fir Pseudotsuga menziesii 8 /ery Poo Cavity, 1 1 1 1549 Bigleaf Maple Acermocrophyllum 5 Good 1 1 1654 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1 1657 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1 1658 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 TOTAL: DBH REGULATED REMOVE RC DEST RCPA 2468 168 168 120 0 Avg DBH all to be removed: 14.5 224 RCPA-Trees to be Protected Revised: 9/9/13 NO. COMMON NAME BOTANICAL NAME DBH CONDITION COMMENTS EXEMPT REGULATED REMOVE IMPACTED RC D15T RCPA _ 450 Douglas Fir Pseudotsuga menziesii J 14 Good 1 1 1 451 Douglas Flr Pseudotsuga menziesii 13 Good 1 1 1 452 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 ; 453 Common Hawthorne Cratoegus monogyna 8 Fair 1 1 1 454 Douglas Fir Pseudotsuga menziesii 14 Good Near462 1 1 1 455 Sweet Cherry Prunus avium 13 Fair 1 1 1 456 Sweet Cherry Prunus avium 10 Fair 1 1 1 457 Sweet Cherry Prunus avium $ Fair 7 stems 5.6. 1 1 1 458 Bigleaf Maple Ater macraphydum 24 Poor 4 stems 11,6,I9,7. 1 1 1 Broken top. 459 Bigleaf Maple Acer macrophyllum Poor Part of 4458 W 460 Bigleaf Maple Acer macrophyllum Poor Part of 11458 461 Bigleaf Maple Acer macrophyllum Poor Part of 1745$ 489 Douglas Fir Pseeudotsugamenziesii 39 Good 1 1 1 493 European Mtn.Ash Sorbus oucupuria 9 Poor 1 1 1 503 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 1 504 Douglas Fir Pseudotsuga menziesii 10 Poor Suppressed- 1 1 1 505 Douglas Fir Pseudotsuga menziesii 22 Good 1 1 1 - 506 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 510 Douglas Fir Pseudotsuga menziesii 14 Poor Broken top. 1 1 1 511 Douglas Fir Pseudotsuga menziesii 8 Poor Suppressed, 1 1 1 512 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 513 Douglas Fir Pseudotsugamenrlesii 15 Good 1 1 1 514 Sweet Cherry Prunus odium 9 Fair 1 1 1 515 Douglas Fir Pseudotsuga menziesii 27 Fair 1 1 1 516 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 1 1 517 Douglas Fir Pseudotsuga menziesii 15 Poor Broken top. 1 1 1 519 Douglas Fir Pseudotsuga menziesii 26 Good 1 1 k _ 524 Douglas Fir Pseudotsuga menziesii 27 Good 1 1 1 • 521 Douglas Fir Pseudotsuga menziesii 31 Good 1 1 1 522 Oregon White Oak Quercus garryana 17 Fair 1 1 1 524 Sweet Cherry Prunus odium 8 Fair 1 1 1 525 Red Alder Ainus cobra 6 Fair 1 1 1 v 526 Doug€as Fir Pseudotsuga menziesii 38 Good 1 1 1 527 Douglas Fir Pseudotsuga menziesii 25 Good 1 1 1 528 Douglas Fir Pseudotsuga menziesii 22 Good 1 1 1 529 Douglas Fir Pseudotsuga menziesii 18 Fair 1 1 1 531 Douglas Fir Pseudotsuga menziesii 38 Good 1 I 1 533 Douglas Fir Pseudotsugo menziesii 15 Good 1 1 1 534 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 616 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 617 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 618 Douglas Fir Pseudatsugamenzlesil 18 Good 1 1 L 629 Douglas Fir Pseudotsuga menziesii 13 Good 1 1 1 630 Douglas Fir Pseudotsuga menziesii 18 Poor Suppressed. 1 1 1 631 Sweet Cherry Prunus avium 6 Fair 1 1 1 633 Douglas Fir Pseudotsuga menziesii 34 Good 1 1 1 634 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 635 Douglas Fir Pseudotsuga menziesii 32 Fair Bees nest 1 1 1 637 Sweet Cherry Prunus avium 10 Very Poor Broken top 1 1 1 634 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed 1 1 1 6412 Douglas Fir Pseudotsuga menziesii 29 Fair 1 1 1 641 Douglas Fir Pseudotsuga menziesii 27 Fair 1 1 1 1 642 Douglas Fir Pseudotsuga menziesii 13 Fair 1 1 1 643 Douglas Fir Pseudotsuga menziesii 15 Fair I 1 1 644 Douglas Fir Pseudotsuga menziesii 21 Poor f 1 1 645 Oregon White Oak Quertusgarryana 8 Poor Cavities. 1 1 1 646 Oregon White Oak Quercus garryana 7 Fair 1 1 1 647 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top_ 1 1 1 648 Douglas Fir Pseudotsuga menziesii 36 Fair 1 1 1 652 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 655 Pacific Dogwood Cornus nuttallii 5 Fair 1 1 1 656 Oregon White Oak Quercus garryana 6 Poor Suppressed. 1 1 1 — 657 Oregon White Oak Quercus garryana 7 Fair 1 1 1 225 RCPA-Trees to be Protected Revised: 9/9/13 658 Oregon White Oak Quercus garryona 17 Fair 2 stems15,7. 1 1 1 659 Oregon White Oak Quercusgarryona 7 Fair Part of#658. 1 1 1 660 Oregon White Oak Metros garryona 23 Goad 1 1 1 661 Pacific Yew Taros brevifolia 12 Poor 1 1 1 662 Douglas Fir Pseudotsuga menziesii 36 Fair 1 1 1 _ 663 Douglas Fir Pseudotsuga menziesii 29 Good 1 1 1 664 Douglas Fir Pseudotsuga menziesii 19 Poor Broken top. 1 1 1 665 Douglas Fir Pseudotsagomenzlesil 44 Goad 1 1 1 666 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 667 Douglas Fir Pseudotsuga menziesii 9 Poor Broken top. 1 1 1 667.1 Douglas Fir Pseudotsuga menziesii 36 Good 17'S#667,25'E#668. 1 1 1 1 668.1 Oregon White Oak Quercus garryona 6 Fair 18'F?P668,29'S#667. 1 1 1 679 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 1 1 904 Douglas Fir Pseudotsugo menzlesii 30 Good 1 1 1 905 Bigleaf Maple Acer macrophylum 17 Good 1 1 1 911 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 912 Oregon White Oak Quercus gvrryvnv 13 Fair 1 _ 1 1 1 917 Douglas Fir Pseudotsuga menziesii 12 Fair 1 1 1 - 918 Sweet Cherry Prunus ovfum 6 Very Poor Thin crown. 1 1 1 928 Douglas Fir Pseudotsuga menziesii 5 Very Poor Suppressed. 1 1 1 929 Douglas Fir Pseudotsuga menziesii 11 Poor Suppressed. 1 1 1 930 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 931 Douglas Fir Pseudotsuga menziesii 27 Good 1 1 1 933 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 1 934 Douglas Fir Pseudotsuga rnenzfesii 21 Good 1 - 1 1 1 935 Douglas Fir Pseudotsuga menziesii 10 Fair 1 1 1 940 Sweet Cherry Prunus atrium 7 Poor I ` 1 1 941 Bigleaf Maple Acer mocmphyllum 10 Good 1 1 1 942 Willow Safursp. 9 Very Poor 2 stems 9,9 1 1 1 - 943 Willow SOU sp. 9 Very Poor Part of P942 951 Sweet Cherry Prunus atrium 11 Fair 1 - 1 1 952 Bigleaf Maple Acer macrophyflum 14 Good 1 1 1 953 Douglas Fir Pseudotsuga menziesii 22 Good 1 _ 1 1 954 Sweet Cherry Prunus ovium 5 Very Poor 1 1 1 956 Sweet Cherry Prunus atrium 6 Very Poor Thin crown. 1 1 1 957 9igleaf Maple Acer macrophylfum 14 Good I 1 1 958 Douglas Fir Pseudotsuga menziesii 20 Good Same as 961. 1 1 1 964 Sweet Cherry Prunus atrium 8 Poor I 1 1 971 Sweet Cherry Prunus atrium 7 Very Poor 1 1 1 974 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1 975 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 976 Douglas Fir Pseudotsuga menziesii 22 Good 1 1 1 977 Douglas Fir Pseudotsuga menziesil 9 Poor Suppressed. 1 1 1 978 Douglas Fir Pseudafsugamenzlesii 16 Good 1 1 1 979 Douglas Fir Pseudotsuga menziesii 9 Fair 1 1 1 980 Bigleaf Maple Acermacrophyltum 12 Fair 1 1 1 981 Oregon Ash Fraainus tatifolio 9 Fair 1 1 1 983 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 988 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1 989 Douglas Fir Pseudotsuga menziesii IS Good 1 1 1 990 Douglas Fir Pseudotsuga menziesii 25 Fair 1 1 1 991 Sweet Cherry Prunus atrium 9 Fair 2 1 1 992 Douglas Fir Pseudotsuga menziesii 15 Good 1 1 1 1010 Douglas Fir Pseudotsuga menziesii 16 Good I 1 1 .. 1011 Bigleaf Maple Acermarrophyllum 9 Fair 1 1 1 1012 Oregon White Oak 4uercus garryono 15 Good 1 1 1 1016 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 1 1017 Douglas Fir Pseudotsuga menziesii 25 Good 1 Y 1 1 1019 Douglas Fir Pseudotsuga menziesii 29 Good 1 1 1 1020 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 1 1022 Douglas Fir Pseudotsuga menziesti 29 Good 1 1 1 1029 Bigleaf Maple Acer macrophylfum 11 Good 1 1 1 1030 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 226 RCPA-Trees to be Protected Revised: 9/9/13 1031 Douglas Fir Pseudotsugo menziesii 10 Fair 1 1 1 1032 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 1212 Douglas Fir Pseudotsuga menziesii 28 Good 1 1 1 1 1241 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 1242 Douglas Fir Pseudotsuga menziesii 26 Good 1 1 1 1 1243 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 1245 Douglas Fir Pseudotsuga menziesii 28 Good _ 1 1 1 1246 Douglas Fir Pseudotsuga menziesii 22 Good 1 1 1 1248 Douglas Fir Pseudotsuga menziesii 5 Poor Suppressed. 1 1 1 1250 Douglas Fir Pseudotsugo menziesii 18 Good 1 1 1 1253 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 1252 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1 1253 Daugias Fir Pseudotsuga menziesii 23 Good 1 1 1 17.54 Douglas Fir Pseodotsuga menziesii 13 Good 1 1 1 1255 Douglas Fir Pseudotsugo menziesii 22 Good 1 1 1 _ 1256 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1257 Douglas Fir Pseudotsuga menziesii 28 Good 1 1 - 1 1261 Willow Sotix sp. 6 Poor 1 1 1 1265 Willow 5099 sp. 8 Poor 1 1 1 1282 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1283 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1284 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 129a Douglas Fir Pseudotsuga menziesii 15 Good 1 1 1 1291 Bigleaf Maple Acei macrophyllum 9 Fair 1 1 1 1292 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 1293 Douglas Fir Pseudotsugameruiesii 15 Good 1 1 1 1294 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1 1295 Douglas Fir Pseudotsuga menziesii 10 Poor Suppressed, 1 1 1 1297 Douglas Fir Pseudotsuga menziesii 24 Fair 1 1 1 1298 Douglas Fir Pseudotsuga menziesii 26 Falr 1 1 1299 Black Cottonwood Populus trichocarpa 23 Good 1 1 1300 Scarlet Oak Quercuscoccinea 11 Good 1 1 1 1301 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1 1302 Sweet Cherry Prunus aviary 8 Fair 1 1 1 1303 Sweet Cherry Prunusovium 7 Fair 1 1 1 1304 Sweet Cherry Prunus ovium 12 Poor trunk cavity. 1 1 1 1305 Sweet Cherry Prunus ovium 14 Fair 1 1 1 1306 Sweet Cherry Prunus(whim 6 Fair 1 1 1 1307 Douglas Fir Pseudotsuga menziesii 19 Fair 1 1 1 1309 Douglas Fir Pseudotsuga menziesii 30 Good 1 1 1 1311 Sweet Cherry Prunus avium 5 Poor 1 1 1 3312 Oregon White Oak Ourrots garryona 18 Good 1 1 1 — 1316 Oregon White Oak Quercus gorryona 15 Fair 3 1 1 1317 Sweet Cherry Prunus avium 5 Fair 1 — 1 1 1318 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 1319 Douglas Fir Pseudotsuga menziesii 32 Good 1 1 1 1320 Douglas Fir Pseudotsuga menziesii 15 Poor Suppressed_ 1 1 1 1321 Oregon White Oak Quercus garryono 18 Good 1 1 1 1322 Douglas Fir Pseudotsuga menziesii 15 Good 1 1 1 1323 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 1324 Oregon White Oak Quercus garryono 6 Poor Suppressed_ 1 1 1 1325 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1 1327 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 1328 Common Hawthorn Cratoegus manogyne 5 Poor 1 1 1 ~ 1332 Douglas Fir Pseudotsuga menziesii I Poor Broken top, 1 1 1 1333 Douglas Fir Pseudotsugo menziesii 23 Fair 1 1 1 1334 Douglas Fir Pseudotsuga menziesii 25 Fair 1 1 1 1335 Douglas Fir Pseudotsugo menziesii S Poor Suppressed. 1 1 1 1336 Douglas Fir Pseudotsugo menziesii 9 Poor Suppressed. 1 1 ~ 1 - 1338 Oregon White Oak Quercus garryono 5 Fair 1 1 1 1339 Oregon White Oak Quercus garryono 17 Good 1 1 1 — 1344 Red Maple Acerrubrum 12 Good 1 1 3 1345 r Douglas Fir Pseudotsuga menziesii 18 Goad 1 1 1 227 RCPA-Trees to be Protected Revised: 9/9/13 1346 Douglas Fir Pseudotsugn menziesii 15 Good 1 _ 1 1 1349 Douglas Fir Pseudotsugn menziesii 18 Poor Broken top, 1 1 1 1350 Douglas Fir Pseudotsuga menziesii 33 Goad 1 1 1 1351 Douglas Fir Pseudotsuga menziesii 17 Poor Suppressed. 1 1 1 1352 Douglas Fir Pseudotsuga menziesii 32 Good 1 1 1 1353 Bigleaf Maple Ace macrophyllum 8 Poor 1 1 1 1354 Douglas Fir Pseudotsugn menziesii 17 Poor 1 1 1 1355 Douglas Fir Pseudotsuga menziesii 14 Very Poor Broken top. 1 1 1 r ' 1356 Douglas Fir Pseudotsuga menziesii 28 Good 1 1 1 — 1357 Douglas Fir Pseudotsuga menziesii 19 Poor 1 1 1 1358 Douglas Fir Pseudotsuga menziesii £7 Fair 1 1 1 135a Douglas Fir Pseudotsugn menziesii 16 Good I 1 1 1360 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 1351 Douglas Fir Pseudotsuga menziesii 5 Poor Suppressed. 1 1 1 1362 Oregon White Oak Quercus garryano 12 Good 1 1 1 J 1363 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 1365 Douglas fir Pseudotsuga menziesii 22 Good 1 1 1 r 1370 Oregon White Oak Quercus garryano 15 Fair 1 1 1 1373 Douglas Fir Pseudotsuga menziesii 21 fair 1 1 1 1372 Douglas Fir Pseudotsuga menziesii 29 Good 1 1 1 1373 Douglas Fir Pseudotsuga mentiesii 35 Good 1 1 1 1374 Pacific Dogwood Corpus nuttofiii 6 Good 1 1 1 1375 Douglas Fir Pseudotsuga menziesii 24 Goad I 1 1 _ 1378 Douglas Fir Pseudotsuga menziesii 29 Good 1 1 1 - 2379 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 1380 Douglas Fir Pseudotsuga menziesii 12 Very poor Conks 1 1 1 1385 4 Douglas Fir Pseudotsuga menziesii 33 Good 1 1 1 1388 Bigleaf Maple Acer mocrophylium 8 Good 1 1 1 1394 Bigleaf Maple Azarmacrephyifum 17 Good 1 1 .� 1 1395 Douglas Fir Pseudotsuga menziesii 14 Poor Broken top. - 1 1 1 1396 Douglas Fir Pseudotsuga menziesii 37 Good 1 1 1 1401 Douglas Fir Pseudotsuga menziesii 45 Good 1 1 1 1402 Oregon White Oak Quercus gorryono 20 Good 1 1 1 1404 Douglas Fir Pseudotsuga menziesii 13 Fair _ £ 1 1 1439 European White Birch Betura pendula 7 Good 1 1 1 1440 Willow Salix sp. 6 Very Poor Decay 1 1 1 1442 Cascara Rhamnus purshiona 6 Poor 1 1 1 1443 European White Birch Betulo pendula 5 Good 1 1 1 _ 1444 Douglas Fir Pseudotsuga menziesii 37 Good 1 1 1 1448 Oregon White Oak Quercus gorryana 21 Good 1 1 1 1449 Sweet Cherry Prunus avium 7 Fair 1 1 y 1 1453 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1455 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1 1456 Scarlet Oak Quercus coccinea 14 Good 1 1 1 1458 Sweet Cherry PruarSavium 5 Fair 1 1 1 1459 Sweet Cherry Prunus ovium 7 Fair 1 1 1 1460 Douglas Fir Pseudotsugarenziesii 26 Good 1 1 1 1461 Sweet Cherry Prunus uvium 8 Fair I. 1 1 w 1462 Sweet Cherry Prunus avium 6 Fair 1 1 1 1472 Willow Soiix sp. S Very Poor Decay 1 1 1 1473 Bigleaf Maple Acermocrophyllum 8 Good 1 1 1 1476 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 1 1477 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1470 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 1 1479 Scarlet Oak Quercus caccinea 15 Good 1 1 1 1480 Douglas Fir Pseudotsuga menziesii 7 Good 1 1 1 1482 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1 1483 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1484 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 1485 Douglas Fir Pseudotsuga menziesii 6 Poor 1 1 1 1488 Scarlet Oak Quercus coccinea 13 Good 1 1 1 1489 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1 3530 Bigleaf Maple ricermacrophyllum 13 Good 1 1 1 - 3574 Douglas Fir Pseudotsuga menziesii 15 Good 1 1 1 228 RCPA-Trees to be Protected Revised: 9/9/13 1575 Scarlet Oak Quercuscaccfnea 15 Good 1 1 1 1578 Sweet Cherry Prunus avium 17 Fair 1 1 1 .. 1579 Douglas Fir Pseudatsuga menziesii 9 Fair I 1 1 1 1588 Coast Redwood Sequoia sempervirens 6 Good 1 1 1 1569 Coast Redwood Sequoia sempervfrens S Go0d 1 1 1 1590 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 1591 Sweet Cherry Prunus avium 10 Fair 1 1 1 - 1592 Douglas Fir Pseudoisuga menzfesii 8 Poor 1 1 1 1601 _ Douglas Fir Pseudatsuga menziesii 25 Good 1 1 1 — 1602 Douglas Fir Pseudaisuga menziesii 29 Good 1 1 1 - 1603 Douglas Fir Pseudoisuga menziesii 20 Good 1 1 1 1604 Douglas Fir Pseudoisuga menziesii 9 Fair 1 1 1 1605 Douglas Fir Pseudatsuga menziesii 26 Farr 1 1 1 1606 Scarlet Oak Quarcus caccinea 14 Good 1 _ 1 1 1607 Douglas Fir Pseudatsuga menzfesii 6 Good 1 1 1 v 1613 Douglas Fir Pseudotsuga menziesii 6 Poor Broken top. 1 1 1 1614 Douglas Fir Pseudoisuga menziesii 9 Good 1 1 1 1615 Douglas Fir Pseudoisuga menziesii 7 Poor Thin crown 1 1 1 1617 Douglas Fir Pseudatsuga menziesii 9 Good 1 1 1 - 1620 Douglas Fir Pseudoisuga menziesii 31 Goad 1 1 1 — 1621 Bigleaf Maple Acer macrophyifum 8 Good _ 1 1 1 1522 Bigleaf Maple Acermacrophyllum 7 Good 1 1 1 - 1623 Bigleaf Maple Acer macrophyllum 7 Good 1 1 1 I624 Willow Sakesp. 8 Poor 1 1 1 1625 Willow Salle sp. 8 Poor 1 1 1 1626 Willow Sahx sp. 6 Poor 1 1 1 1655 Douglas Fir Pseudoisuga menzfesii 17 Good 1 1 1 TOTAL: DBH REGULATED IMPACTED RCPA 4441 276 7 275 Avg DBH of RCPA to be protected: 16.1 229 All RC District Trees Revised:9/9/13 1 NO. COMMON NAME BOTANICAL,NAME DBN CONDITION COMMENTS EXEMPT REGULATED REMOVE IMPACTED RC DIST RCPA 446 Douglas Fir Pseudotsugamenziesk 14 Good I 1 1 • 447 Douglas Fir Pseudotsugo menziesii 11 Good 1 1 1 448 Douglas Fir Pseudotsuga menziesii 12 Good 3 1 1 449 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 , 450 Douglas Fir Pseudotsuga menziesk 14 Good 1 1 1 _ 21'W 4t450, 4501 Douglas Fir Pseudotsuga menziesii 15 Good 1 1 1 27,E i1462 451 Douglas Fir Pseurlotsugamenziesri 13 Good 1 1 1 452 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 1 453 Common Hawthorne Crmmegus mon0gyna 8 Fair 1 1 1 454 Douglas Fir Pseudotsuga menziesii 14 Good Near 462 1 _ 1 1 455 Sweet Cherry Prunus avium 13 Fair 1 1 1 456 Sweet Cherry Prunus curium 10 Fair 1 1 1 457 Sweet Cherry Prams ovium 8 Fair 2 stems 5,6. 1 1 1 4 stems 458 Bigleaf Maple Acer macrophyllum 24 Poor 11,6,19,7. 1 1 1 Broken top. 459 Bigleaf Maple Acer macrophylum Poor Part of 6458 466 Bigleaf Maple _ Acermacraphyllum Poor Part of It458 461 Bigleaf Maple Ater usacrophyllum Poor Part of 8458 . 462 Giant Sequoia Sequoiodendron gigonteum 29 Good 1 1 1 489 Douglas Fir Pseudotsuga menziesii 39 Good 1 1 1 493 European Mtn.Ash Sorbus oucupario 9 Poor 1 1 1 • 503 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 1 504 Douglas Fir Pseudotsuga menziesii 10 Poor Suppressed_ 1 1 1 505 Douglas Fir Pseudotsugo menziesii 22 Good 1 1 1 506 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 _ 3 510 Douglas Fir Pseudotsuga menziesii 34 Poor Broken top. 1 1 1 511 Douglas Fir Pseudotsuga menziesii 8 Poor Suppressed. 1 3 1 512 Douglas fir Pseudotsuga menziesii 23 Good 1 1 1 513 Douglas Fir Pseudotsugo menziesii 15 Goad 1 _ 1 _ 1 514 Sweet Cherry Prunus avium 9 Fair 1 1 1 515 Douglas Fir Pseudotsuga mersziesil 27 Fair 1 1 1 516 Douglas Fir Pseudotsuga menziesii 18 Poor Broker top. 1 1 1 i 517 Douglas Fir Pseudotsuga menzlesii 15 Poor Broken top. 1 1 1 519 Douglas Fir Pseudotsuga menziesii 26 - Good 1 1 1 520 Douglas Fir Pseudotsuga menziesii 27 1 Good 1 1 1 521 Douglas Fir Pseudotsuga menziesii 31 1 Good 1 1 1 522 Oregon White Oak 4uercus gorryona 17 1 Fair 1 1 1 __ 523 Douglas Fir Pseudotsugo menziesii 32 1 .. Fair 1 1 , 524 Sweet Cherry Prunusavium 6 Fair 1 1 1 525 Red Alder Alnus rubro 6 _ Fair 1 1 1 525 Douglas Fir Pseudotsuga menziesii 38 Good I I 1 527 Douglas Fir Pseudotsugo menziesii 29 Good 1 1 1 528 Douglas Fir Pseudotsugo monriesa 22 Good 1 1 1 529 Douglas Fir Pseudotsuga menziesii 18 Fair 1 1 1 531 Douglas Fir Pseudatsugamenzlesii 38 Good 1 1 1 533 Douglas Fir Pseudotsuga menziesii 15 Good _ 1 1 1 534 Douglas Fir Pseudotsuga mentiesif 20 Good 1 1 1 587 Vine Maple Acer circinetum 7 Poor 2 stems 5,5 1 1 1 588 Vine Maple Atercircinotum 9 Poor 3 stems 5,4,3. 1 1 1 589 Pacific Dogwood Corrals nuttallir 6 Fair 1 1 1 591 Douglas Fir Pseudotsuga menziesii 35 Goad — 1 1 1 593 Douglas Fir Pseudotsuga menziesii 25 1 Good 1 1 1 616 Douglas Fir Pseudatsugamentiesii 23 1 Good 1 1 1 617 Douglas Fir Pseudotsugo menziesii 21 Good 1 1 1 618 Douglas Fir Pseudotsuga rnet-Wes6 13 Good 1 1 1 — 629 Douglas Fir Pseudotsuga menziesii 13 Good 1 1 1 630 Douglas Fir Pseudotsuga menziesii 18 Poor Suppressed. 1 1 1 1 631 Sweet Cherry Prunus warm 6 Fair I 1 1 633 Douglas Fir Pseudotsuga menziesii 34 Good 1 1 1 3 634 Douglas fir Pseudotsuga menriesii. 18 Good 1 1 1 1 _ 635 Douglas Fir Pseudotsuga menziesii 32 Fair Bees nest 1 1 1 1 637 Sweet Cherry us Prun ovium 10 Very Poor Broken tap 1 1 1 639 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed 1 _ 1 1 640 Douglas Fir Pseudotsuga menziesii 29 Fair 1 1 1 4 641 Douglas Fir Pseudotsuga menziesii 27 Fair 1 1 1 1 642 Douglas Fir Pseudotsuga menziesii 13 Fair 1 1 1 643 Douglas Fir Pseudotsuga menziesii 15 Fair 1 1 _ 3 644 Douglas Fir Pseudotsuga menziesii 11 Poor 1 1 1 645 Oregon White Oak Ouercusgarryana 8 Poor Cavities. 1 1 1 646 Oregon White Oak Qsrercus garryono 7 Fair 1 1 1 647 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. 1 1 1 648 Douglas Fir Pseudotsuga menziesii _ 36 , Fair 1 1 1 652 Dou tas Fir Pseudotsuga menziesii 21 Good 1 1 1 655 Pack Dogwood Comas nuttellii S Fair 1 I 1 656 Oregon White Oak Quercus garryana 6 Poor Suppressed. 1 1 I 657 Oregon White Oak Quercus gorryana 7 Fair I 1 1 230 All RC District Trees Revised:9/9/13 658 Oregon White Oak Quercus gorryana 17 Fair 2 stems15,7. 1 1 1 659 Oregon White Oak Quercus gorryana 7 Fair Part of 6658. 1 1 1 660 Oregon White Oak Querns garryana 23 Good 1 1 1 661 Pacific Yew 7axus brevifoiio 12 Poor 1 1 1 _ 662 Douglas Fir Pseudotsuga menriesfi 36 Fair 1 rs 1 1 663 Douglas Fir Pseudotsuga menziesii 29 Good 1 _ 1 1 664 Douglas Fir Pseudotsuga menriesfi 19 Poor Broken top. 1 1 1 665 Douglas Fir Pseudotsuga menziesii 44 Good 1 1 1 666 Douglas Fir Pseudotsuga menziesii 23 I Good 1 — 1 1 J 667 Douglas Fir Pseudotsugo menziesii 9 Poor Broken top. 1 1 1 17'S 6667,25' 657.1 Douglas Fir Pseudotsuga menziesii 36 Good 1 1 1 1 E 6668. 668.1 Oregon White Oak IS'E7#668, g Quercus gorryana 6 Fair 29'S#667. 1 I 1 679 Douglas Fir Pseudotsuga menziesii 18 1 Poor Broken top. 1 1 1 680 Douglas Fir Pseudotsuga menzieslr 21 _ t Good 1 1 1 _ 681 Douglas Fir Pseudotsuga menziesii 22 1 Fair s, 1 1 1 — 682 Douglas Fir Pseudotsuga menziesii 19 1 Good 1 1 1 683 Oregon White Oak Querns garryana 15 1 Good 1 1 1 684 Douglas Fir Pseudotsuga menziesli 33 rs 1 Good 1 1 1 685 Oregon White Oak Quercus garryana 8 Good 1 1 1 686 Oregon White Oak Querns garryana 8 Good 1 1 1 687 Oregon White Oak Querns garryano 6 Poor Suppressed 1 1 1 688 Oregon White Oak Quercusgarryona 11 Good 2 1 1 689 Oregon White Oak Quern's 19 1 Good 1 1 1 _ 690 Douglas Fir Pseudotsugo menziesii 24 1 Good 1 1 1 691 Douglas Fir Pseudotsugo menziesii 16 1 rs, Good 1 1 I 692 Douglas Fir Pseudotsuga menziesii 20 1 Good 1 s 1 1 693 Douglas Fir Pseudotsugo menziesii 14 Good 1 1 1 694 Douglas Fir Pseudotsugo menziesii 16 1 Fair 1 1 1 695 Douglas Fir Pseudotsuga menziesii 22 1 Fair — 1 1 1 696 Oregon White Oak Quercusgarryana 17 1 Good 1 1 1 697 Douglas Fir Pseudotsugo menziesii 17 1 Good 1 1 1 693 Douglas Fir Pseudotsugo menziesii 23 1 Good 1 1 1 699 Oregon White Oak Quercus gorryana 11 1 Good 1 1 1 700 Douglas Fir Pseudotsuga menziesii 21 _ Good _ 1 1 1 701 Oregon White Oak Quercusgarryana 21 Poor 1 1 _ 1 702 Douglas Fir r. Pseudotsuga menziesii 22 Good 1 1 1 703 Douglas Fir Pseudotsuga menziesii 7 Very Poor Broken top. 1 1 n 1 705 Douglas Fir Pseudotsuga menziesii 20 Good 1 1 1 706 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed. 1 1 1 707 Douglas Fir Pseudotsugo meeziesh 20 Good 1 1 _ 1 708 Douglas Fir Pseudotsuga menziesii 12 Fair 1 1 1. 709 Douglas Fir Pseudotsugo menziesii 40 r Good _ 1 1 1 710 Bigleaf Maple Acermacrophyllum 11 Fair 1 1 1 711 Douglas Fir Pseudotsuga menziesii 11 Good Part of 712 1 712 Douglas Fir Pseudotsuga menziesii 24 Good 2 stems 11,21. 1 1 714 Douglas Fir Pseudotsugo menziesii 18 Good 1 1 1 715 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 716 Douglas Fir Pseudotsuga menziesii 16 1 Good 1 1 _1 717 Douglas Fir Pseudotsuga menziesii 26 1 Good 1 1 1 716 sr. Douglas Fir Pseudotsuga menziesii , 17 1 Good 1 1 1 Y 719 Douglas Fir Pseudotsuga menziesii 27 1 Good 1 1 1 sr 761 Douglas Fir Pseudotsuga menziesii 15 1 Fair 1 1 1 762 Douglas Fir Pseudotsugo menziesii 25 1 Fair 1 1 1 769 Douglas Fir Pseudotsuga menziesii 26 1 Fair I s 1 770 Bigleaf Maple Acer macrophyflum 24 1 Fair 1 1 1 771 Douglas Fir Pseudotsugo menziesii 30 1 Good 1 1 s 1 772 Douglas Fir Pseudotsuga menziesii 14 Poor Broken top. 1 1 773 Douglas Fir Pseudotsuga menriesfi 12 Fair 1 1 774 Douglas Fir Pseudotsuga menziesii 9 Poor Broken top. 1 1 775 Douglas Fir Pseudotsugo menziesii _ 24 _ Good 1 1 776 Douglas Fir Pseudotsuga menziesii 26 1 Good 1 1 777 Douglas Fir Pseudotsugo menziesii 24 ss. 1 Good 1 1 778 Douglas Fir r. Pseudotsuga menziesii 26 1 Good 1 1 779 Douglas Fir Pseudotsugo menziesii 23 1 r. Good 1 1 780 Douglas Fir Pseudotsugo menziesii 34 1 Good 1 1 1 _ 781 Douglas Fir Pseudotsuga menziesii 20 1 Good 1 1 1 784 Douglas Fir .rrPseudotsuga menziesii 27 1 Good 1 1 1 798 Douglas Fir Pseudotsuga menziesii 27 1 Good 1 1 1 799 Douglas Fir Pseudotsuga menziesii 19 1 Good 1 1 1 800 Douglas Fir Pseudotsuga menziesii 32 1 Good 1 1 810 Oregon White Oak Querns garryana 26 Good 1 1 1 901 Douglas Fir Pseudotsugo menziesii 30 Goad 1 1 1 902 Bigleaf Maple Acer mocrophyllum 11 Poor Broken top. 1 _ 1 1 903 Bigleaf Maple Acer macrophyllum 5 Fair 1 1 I 904 Douglas Fir Pseudotsuga menziesii 30 _ Good 1 1 1 905 Bigleaf Maple Acer macraphyllum 17 l s Good 1 _ 1 1 ' 906 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 907 Bigleaf Maple Acermacrophyllum 14 s Good 1 1 1 908 Douglas Fir Pseudoisuga menziesii 33 Good 1 1 1 910 Bigleaf Maple Acer macraphyflum 15 Fair 1 1 i 231 All RC District Trees Revised:9/9/13 911 Douglas Fir Pseuddatsuga menziesii 21 Good 1 _ 1 1 912 _ Oregon White Oak Quercus garryona 13 Falr 1 1 1 1 917 Douglas Fir ➢seudatsuga menziesii ` 12 Foe 1 1 1 918 Sweet Cherry Prunus atrium 6 Very Poor Thin crown. 1 1 1 928 Douglas Fir Pseudotsuga menziesii 5 Very Poor Suppressed. 1 1 1 929 Douglas Fir Pseudonaga menriesii 11 Poor Suppressed. 1 1 1 930 Douglas Fir Pseudotougameaziesll 24 Good 1 1 1 931 Douglas Fir Pseudotsuga menziesii 27 Good 1 1 1 933 Douglas Fir Pseadotsuga menziesii 24 Good 1 1 1 1 934 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 1 935 Douglas Fir Pseudatsoga menziesii 10 Fair 1 1 _ 1 936 Douglas Fir Pseudotsuga menziesii 24 Good _ 1 1 1 940 Sweet Cherry Prunus atrium 7 Poor _ 1 1 1 941 Bigleaf Maple Acer marrophylium 10 Good 1 1 1 942 Willow Sallx sp. S Very Poor 2 stems 9,9 1 _ 1 1 943 Willow Salbrsp. 9 Very Poor Part of#942 Y 948 Sweet Cherry Proms(Mom 7 Poor _ 1 1 1 951 Sweet Cherry Prunus atrium 11 Fait _ 1 1 1 952 Bigleaf Maple Acer marrophyffum 14 Goad 1 1 1 953 Douglas Fir Pseudotsuga menziesii 22 Good 1 — 1 1 954 Sweet Cherry Prunusavium 5 Very Poor 1 1 1 956 Sweet Cherry Prunus atrium 5 Very Poor Thin crown. 1 1 1 _ 957 Bigleaf Maple Acer macrophyilam 14 Good 1 1 1 958 Douglas Fir Pseudotsuga menziesii 20 Good Same as 951_ 1 1 1 964 Sweet Cherry Prunus atrium 8 Poor 1 1 1 971 Sweet Cherry Prunus oviuru 7 , Very Poor 1 1 1 974 Douglas Fir Pseadotsuga menziesii 17 Good 1 1 1 975 Douglas Fir Pseudorsugo menziesii 23 Good 1 1 1 976 Douglas Fir Pseudotsuga menziesli 22 Good 1 1 1 - 977 Douglas Fir Pseudotsuga menziesii 9 Poor Suppressed- 1 1 1 978 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1 979 Douglas Fir Pseudatsugo menziesii 9 Fair 1 1 1 980 Bigleaf Maple Acer marraphyllum 12 Fair 1 1 1 981 Oregon Ash Froxlnus latlfofio 9 Fair 1 1 1 _ 983 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 988 Douglas Fir Pseudotsuga menriesii 17 Good 1 1 1 989 Douglas Fir Pseadotsuga menziesii 18 Good 1 1 1 990 Douglas Fir Pseadotsuga menziesii 2S Fair 1 1 1 991 Sweet Cherry Proaus atrium 9 fair 1 1 1 992 Douglas Fir Pseadotsuga menziesii 15 Good 1 1 1 995 Douglas Fir Pseudotsuga menziesii 19 Good 1 _ 1 1 996 Douglas Fir Pseudrnrsugu menziesii 10 Fair 1 1 1 997 Douglas Fir Pseudotsuga menziesii 25 Good 1 1 1 998 Douglas Fir Pseudatsugo menziesii 20 Good 1 1 1 999 Bigleaf Maple Acer mocrophyllum 6 Fair 1 1 1 1000 Douglas Fir Pseudotsuga menziesii 13 Poor Broken top_ 1 1 1 1001 Douglas Fir Pseadotsuga menziesii 18 Good 1 1 1 1002 Douglas Fir Pseudotsuga menziesii 27 - Good 1 1 1 1003 Bigleaf Maple Acermacrophylfum 10 — Good 1 1 , 1004 Bigleaf Maple Ater mocrophylium 8 Good 1 1 1 1005 Douglas Fir Pseudotsuga meozlesir 13 _ Good 1 1 1 1006 Douglas Fir Pseudotsuga menziesii 19 ] Good _ 1 1 1 1007 Douglas Fir Pseudotsuga menziesii 6 Poor Suppressed. 1 1 1 _ 1008 Douglas Fir Pseudotsuga menziesiF 15 1 Good 1 1 1 1009 Douglas Fir Pseudotsuga menziesiF 21 1 Good 1 1 1 - 1010 Douglas Fir Pseudotsuga menziesii 16 _ - Good 1 1 1 1011 Bigleaf Maple Acer macrophyhum 9 Fair 1 1 M 1 1012 Oregon White Oak Qaercus garryana IS _ Good 1 1 1 1015 Douglas Fir Pseudotsuga menziesii IS Fair 1 1 1 1017 Douas Fir Pseudotsuga menziesii 25 Good _ 1 1 1 1019 Douglas Fir Pseudotsuga menziesii 29 Good 1 _ 1 1 1020 Douglas Fir Pseudotsuga menziesii 16 Fair 1 1 1 1022 Douglas Fir Pseudotsuga menziesii 29 Good 1 1 1 1023 _ Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1025 Pacific Madrona Arbutus menriesii 6 Fair 1 1 1 1027 Douglas Fir Pseudotsuga menziesii 25 Good 1 1 1 1028 Douglas Fir Pseadotsuga menziesii 7 Poor Suppressed. 1 1 1 1029 Bigleaf Maple Acer macmphyllum 11 Good 1 1 1 _ 1030 Douglas Fir Pseadotsuga menziesii 18 Good 1 1 1 1031 Douglas Fir Pseodotsugoweneiesfi 10 fair 1 1 1 1032 Douglas Fe Pseudotsuga menziesii 19 Good _ 1 1 1 1207 Douglas Fir Pseadotsuga menziesii 24 Good 1 — 1 1 1208 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 _ 1210 Bigleaf Maple Acer marrophyllum 12 Good 1 1 1 1211 Douglas Fir Pseudotsuga menziesii 24 _ Good 2 1 1 1212 Douglas Fir Pseudotsuga menziesii 28 _ Good 2 1 1 1 I 1222 Douglas Fir Pseadotsuga menziesii 31 Good 1 1 1 1223 Douglas Fir Pseudotsuga menziesii 32 Good 1 1 1 1224 Douglas Fir _ Pseudotsuga menziesii 33 Good 1 1 3 1241 Douglas Fir Pseadotsuga menziesii 20 Goad 1 1 1 1 232 All RC District Trees Revised:9/9/13 1 1242 Douglas Fir Pseudotsuga menziesii 26 , i Good 1 1 1 1 . 1243 Douglas Fir Pseudatsuga menzlesii 20 Good 1 1 1 .. 1245 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 1246 Douglas Fir Pseudotsuga menziesii 22 _ Good 1 1 1 . 1248 Douglas Fir Pseudotsuga menziesii 5 Poor Suppressed_ 1 1 1 1249 Douglas Fir Pseudotsuga menziesii 17 I Good 1 1 1 • 1250 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 1251 Douglas Fir Pseudotsuga menziesii 23 - Good 1 1 1 i 1252 Douglas Fir Pseudotsugo meatiest 14 Good 1 1 1 1253 Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 1254 Douglas Fir Pseudotsugo meatiest 15 Good 1 1 1 - 1255 Douglas Fir Pseudatsuga menziesii 22 Good 1 1 1 ' 1256 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1257 Douglas Fir Pseudotsuga menziesii 28 - Good 1 1 1 1262 Willow Salix sp. 6 Poor I 1 1 1265 Willow Salix sp. 8 Poor 1 1 1 1266 _ Douglas Fir Pseudotsuga menziesii 23 Good 1 1 1 1267 Oregon White Oak quercus garryano 13 Good 4 sterns 1 1 1 8,fi 4,7, 1268 Oregon White Oak Quercus Qor7yana 6 Good Part of d1267 1269 Oregon White Oak quercusgorryona 4 Good Part of P1268 1270 Oregon White Oak Quercus garryana 7 Good Part of 131269 1272 Douglas Fir Pseudotsugo Meatiest 10 Good _ 1 1 1 _ 1273 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1 1274 Douglas Fir Pseudotsuga menziesii 9 Poor Conks 1 1 1 _ 1275 Douglas Fir Pseudotsugo menziesii 15 Good 1 1 1 1276 Douglas Fir Pseudotsuga meatiest 8 Fair 1 1 1 1277 Douglas Fir Pseudotsuga menziesii 11 Good _ 1 1 1 1278 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 1279 Douglas Fir Pseudotsuga menziesii 8 Fair 1 1 1 1280 Douglas Fir Pseudotsuga menzlesii 10 Good 1 1 _ 1 • 1281 Douglas Fir Pseudotsuga meatiest 11 Good 1 1 1 1282 Douglas Fir Pseudotsuga menziesii 11 Good ., 1 1 1 1283 Douglas Fir Pseudotsuga meatiest 10 Good 1 1 1 1284 Dougias Fir Pseudotsuga meatiest 12 Good 1 _ 1 1 1285 Douglas Fir Pseudotsuga meatiest 8 Good 1 1 _ 1 1286 Douglas Fir Pseudatsuga meatiest 30 Good 1 1 1 1286.1 Cascara Rhamnus purshiana 6 Very Poor 18'E ii1286. 1 1 1 16'NE K1285 — 1287 Douglas Fir Pseudotsuga menziesii 8 Poor Suppressed. 1 1 1 1290 Douglas Fir Pseudotsuga menziesii 15 • Good 1 1 _ 1 1 1291 Bigleaf Maple Atermacrophyllum 9 Fair 1 1 1 1292 Douglas Fir Pseudotsuga menziesii 19 Good 1 1 1 I 1293 Douglas Fir Pseudotsuga menziesii 15 • Good _1 1 1 I 1294 Douglas Fir Pseudotsuga menziesii 16 Goad 1 1 1 1 1295 Douglas Fir Pseudotsuga menziesii 10 Poor Suppressed. 1 1 1 1297 Douglas Fir Pseudotsugo menziesii 24 Fair 1 1 1 1 1300 Scarlet Oak Quercuscocclneo 11 Good 1 1 1_ 1301 Douglas Fir Pseudotsuga menziesii 8 Good _ 1 1 1 1302 Sweet Cherry Prunus oviues 8 Fair 1 1 1 1303 Sweet Cherry Prunus atrium 7 Fair 1 1 1 1304 Sweet Cherry Prunus ovium 12 Poor Trunk cavity. 1 1 1 1305 Sweet Cherry Prunes ovium 14 Fair _ 1 - 1 1 1306 Sweet Cherry Prunusavium 6 Fair 1 _ 1 1 1307 Douglas Fir Pseudotsugo menziesii 19 Fair 1 _ 1 I _ _ 1309 Douglas Fir Pseudotsugo menziesii 30 Good 1 1 f 1311 Sweet Cherry Prunes ovium 5 Poor 1 _ 1 1 1312 Oregon White Oak Quercus garryona £8 - Good 1 1 1 1316 Oregon White Oak quercusgorryona 15 Fair 1 1 1 1 1317 Sweet Cherry Prunes otdum 5 Fair 1 1 1 1318 Douglas Fir Pseudotsuga meatiest 23 Good 1 1 1 1 1315 Douglas Fir Pseudotsuga menziesii 32 Good 1 1 1 1 1320 Douglas Fir Pseudatsugamenziesii 15 Poor Suppressed. 1 1 1 1 1321 Oregon White Oak Quercusgarryanw 18 Good 1 1 1 I 1322 Douglas Fir Pseudatsuga meatiest 15 _ Good 1 1 1 1 1323 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 1 1324 Oregon White Oak Quercus gerryano 6 Poor Suppressed. 1 1 1 1325 Douglas Fir Pseudotsugo menziesii 14 Good 1 1 1 1327 Douglas Fir Pseudotugo menziesii 19 Good 1 1 1 1328 Common Hawthorn Craroegusmanogyno 5 Poor 1 1 1 1332 Douglas Fir Pseudotsugo meatiest 6 Poor Broken top. 1 1 1 1333 Douglas Fir Pseudotsuga mealiest _ 23 Fair 1 1 1 1334 Douglas Fir Pseudotsuga meuiesii 25 - Fair 1 1 1 1335 Douglas Fir Pseudatsrzgo menziesii 5 Poor Suppressed. 1 1 1 233 All RC District Trees Revised:9/9/13 i 1336 Douglas Fir Pseudotsuga menziesii 9 Poor Suppressed. 1 1 1 1338 Oregon White Oak Quercus garryono 5 .. - Fair 1 1 1 1339 Oregon White Oak Quercus gorryana 17 - Good 1 _ 1 1 1344 Red Maple Acer rubrum 12 Good 1 1 1 W 1345 Douglas Fir Pseudotsuga menziesii 18 Good 1 1 1 1146 Douglas Fir Pseudotsuga menziesii 15 r Good 1 1 1 , 1349 Douglas Fir Pseudotsuga menziesii 18 1 Poor Broken top. 1 1 1 1350 Douglas Fir Pseudotsugamenziesll 33 - Good 1 1 1 1351 Douglas Fir Pseudotsuga menzles& 17 Poor Suppressed. 1 1 1 1352 Douglas Fir Pseudotsuga menziesii 32 Good 1 1 1 1353 Oigleaf Maple Acer macraphyNum 8 Poor 1 1 1 - 1354 Douglas Fir Pseudotsuga menziesN 17 Poor a 1 1 1 1355 Douglas Fir Pseudotsugo menziesii 14 Very Poor Broken top. 1 1 -1 1356 Douglas Fir Pseudotsugo menziesii 28 Good 1 1 1 1357 Douglas Fir Pseudotsuga menziesii 19 Poor 1 1 1 1358 Douglas Fir Pseudotsuga menziesii 17 - Fair 1 1 1 1359 Douglas Fir Pseudotsuga menziesii 16 Good I 1 1 1360 V Douglas Fir Pseudotsuga menziesii 20 Good 3 1 1 1361 Douglas Fir Pseudotsuga menziesii 5 Poor Suppressed. 1 1 1 1362 Oregon White Oak Quercus garryana 12 - Good 1 1 1 1363 Douglas Fir Pseudotsuga menziesii 18 Good W 1 1 3 1365 Douglas Fir Pseudotsuga menziesii _Good _ 1 1 1 1370 „ Oregon White Oak Quercusgarryana 15 Fair 1 _ 1 1 1371 Douglas Fir Pseudotsuga menziesii 21 Fair 1 1 1 1372 Douglas Fir Pseudotsuga menziesii 29 Good 3 1 _ 1 1373 v Douglas Fir Pseudotsuga menziesii 35 Good 1 1 1 1374 Pacific Dogwood Carnets nuttallii 6 Good 1 s 1 1 _ 1375 Douglas Fir Pseudotsuga menriesii 24 Good 1 1 1 1378 Douglas Fir Pseudotsuga menziesii 29 Good W A 1 1 1 1379 Douglas Fir Pseudotsuga menziesii 21 Good 1 1 1 1380 Douglas Fir Pseudotsuga menziesii 12 Very poor Conks 1 1 1 1385 Douglas Fir Pseudotsuga menziesii 33 Good 1 1 1 1388 Bigloat Maple Acer macrophylium S Good 1 1 1 - 1394 Bigleaf Maple Atermacrophyllam 17 Good 1 1 1 1395 Douglas Fir Pseudotsuga menziesii 14 Poor Broken top. 1 1 i 1396 Douglas Fir Pseudotsuga menziesii 37 Good 1 1 1 1401 Douglas Fir Pseudotsuga menziesN 45 Good 1 1 1 1402 Oregon White Oak Quercusgarryanu 20 Good 1 - 1 I 1404 Douglas Fir Pseudotsuga menziesii 13 Fair 1 1 1 1408 Oregon White Oak Quercus garryono 31 Good 1 1 1 1409 Douglas Fir Pseudotsuga menziesii 18 Poor Broken top. F 1 1 1 1410 Douglas Fir Pseudotsuga menziesii 24 Good 1 1 1 1411 Black Walnut Juglans nigra 16 Fair 1 1 1 _ 1413 Common Apple Malus sp- 8 Poor 1 1 I - 1439 European White Birch 8etula pendula 7 Good 1 1 1 1440 Willow Salty sp. 6 Very Poor Decay 1 1 1 1442 Cascara i7hammuspurshiana 6 Poor 1 1 1 1443 European White Birch 8etufa perdnla S Good 1 1 1 - 1444 Douglas Fir Pseudotsugo menziesii 37 Good 1 1 1 1448 Oregon White Oak Quercus gorryona 21 Good 1 1 1 1449 Sweet Cherry Prunus oviam 7 Fair 1 1 1 1453 Douglas Fir Pseudarsugu menziesii 11 Goad 1 1 1 1455 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1 1456 Scarlet Oak Quercus coccineo 14 Good 1 1 1 1458 Sweet Cherry Fracas ovium S Fair 1 1 1 1459 Sweet Cherry Pruner avium 7 Fair 1 1 1 1460 Douglas Fir Pseudotsuga menziesii 26 Good 1 1 1 ^ 1461 Sweet Cherry _ Prunus avium A Fair 1 1 1 1462 Sweet Cherry Prunus avium 6 Fair 3 1 1 1472 Willow Solar sp. B Very Poor Decay 1 1 1 1473 Blgleaf Maple Acermacrophyllum a Good 1 1 1 1476 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 1 1477 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1478 Douglas Fir Pseudotsuga menziesii 9 Good 1 1 1 1479 Scarlet Oak Quercus coccinea 1S Good 1 1 1 1480 Douglas Fir Pseudotsuga menriesii 7 Good 1 1 1 1482 Douglas Fir Pseudotsuga menziesii 16 Goad 1 1 1 1483 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 1484 Douglas Fir Pseudotsugo menziesii 12 Good 1 1- 1 1485 Douglas Fir Pseudotsogamenziesii 6 Poor 1 1 1 148E Scarlet Oak Quercus cocciaea 13 Good 1 1 3 1489 Douglas Fir Pseudotsugo menziesii -Good W 1 1 1 1510 Douglas Fir Pseudotsuga menziesii 14 Good 1 1 1 1511 Douglas Fir Pseudotsuga menziesii 8 Good 1 1 1 1514 Douglas Fir Pseudotsugo menziesii 12 Good _ 1 1 1 1515 Douglas Fir Pseudotsuga meuies1 11 Good 1 1 1 1516 Douglas Fir Pseudotsuga menziesii 10 Good 1 1 1 y 1517 Scarlet Oak Quercuscaccinea 11 Good 1 1 1 1518 Douglas Fir Pseudotsuga menziesii 11 Good 1 - 1 1 1519 Douglas Fir Pseudotsugo menziesii 12 Good 1 1 1 1520 Douglas Fir Pseudotsuga menziesii 9 Goad 1 1 1 1521 Douglas Fir Pseudotsuga menziesii 7 Good 1 1 1 1522 Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 234 All RC District Trees Revised:9/9/13 1523 Daugias Fir Pseudotsuga menziesii 10 Good ' 1 1 1 1524 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1529 Douglas Fir Pseudotsuga menzlesii 10 Good 1 1 ` i 1530 Bigleaf Maple Acer macrophyflum 13 Good 1 1 1 1540 Douglas Fir Pseudotsugo menziesii 16 1 Good 1 1 1 1541 Scarlet Oak Quercus coccinea 13 Goad 1 1 1 1542 Douglas Fir Pseudotsuga menziesii 11 Good 1 1 1 1546 Douglas Fir Pseudotsuga menziesii 6 Very Poor Cavity 1 1 1 1574 Douglas Fir Pseudotsuga menziesii 15 1 Good 1 1 1 _ 1575 scarlet Oak Quercuoceccineu 15 1 Good 1 1 1 1578 Sweet Cherry Prunus curium 12 Fair 1 1 1 1579 Douglas Fir Pseudotsuga menziesii 9 Fair 1 1 1 158E Coast Redwood Sequoia sempervirens 6 Good 1 1 1 1589 _ Coast Redwood Sequoia sempervirens 8 Good 1 1 1 1590 , Douglas Fir Pseudotsuga menziesii 12 Good 1 1 1 1591 _ Sweet Cherry Prunus mium I0 Fair 1 1 1 1592 Douglas Fir Pseudotsuga menziesii 8 _ Poor 1 1 1 1601 Douglas Fir Pseudotsuga menziesii 25 1 Good 1 _ 1 1 1 1602 Douglas Fir Pseudotsuga menziesii 29 1 Good 1 1 1 1 1603 Douglas Fir Pseudotsuga menziesii 20 1 Good 1 a 1 1 1 1604 Douglas Fir Pseudotsuga menziesii 9 Fair 1 1 1 1605 Douglas Fir Pseudotsuga menziesii 16 1 Fair 1 1 1 1 1606 Scarlet Oak Quercus coccinea 14 Good _ 1 1 1 1607 Douglas Fir Pseudotsuga menziesii 6 Good 1 1 1 1613 Douglas Fir Pseudotsuga menziesii 6 Poor Broken top. 1 1 1 1614 Douglas Fir Pseudotsuga menziesii 9 Goad 1 1 2 1615 Douglas Fir Pseudotsuga menziesii 7 Poor Thin crown 1 1 1 1617 Douglas Fir Pseudotsuga menziesii 9 Gaod 1 1 1 1620 Douglas Fir Pseudotsuga menziesii 31 1 Good 1 1 1 . 1621 Bigleaf Maple Acer macmphyflum R Good _ 1 1 1 _ 1622 Bigleaf Maple Acer macrophyflum 7 Good 1 1 1 _ 1623 Bigleaf Maple Acer macrophyflum 7 Good I 1 1 _ 1624 Willow Sake sp. 8 Poor 1 1 1 1625 Willow Safes sp. 8 Poor 1 1 1 — 1626 Willow Salle sp. 6 Poor 1 1 1 1654 Douglas Fir Pseudotsuga menziesii 16 Good 1 1 1 1655 Douglas Fir Pseudotsuga menziesii 17 Goad 1 1 1 W . 1657 Douglas Fir Pseudotsuga menziesii 17 Good 1 1 1 TOTAL: ON EXEMPT REGULATED REMOVE IMPACTED RC GIST RCPA Med DBH in RCPA 6945 0 420 114 19 420 281 143 Avg DBH of RC Dist Trees: 16.5 [.s Median DBH: 235 236 BI LEGENDS . ; NOTES _ S , TREES TO BE SAVED)TO BE REMOVED LEGEND ;; STORMWATER FACI!!TY PLANTING.LEGEND RESTORATION NOTES (81 TPEEHREMOVEa BYtlrY1N pREVIpUS CONTRACT _ WRMN LIMRSOF CONSTRIIC71gy DISTURB.VICE LEIS BOTANCAL NAME 5OMLIDNNANE 1 SPEC ALL CIES PRIOR TOKARONG. fR5TOR1'PLPNTAJfiARE TO8E0.EARE11a INVASIVE PLANT :; „i r-1 TREES POTENTIALLY AAPAGT05i ELE 5 P SL'OCYARI6 PAU15TR15 COMMON SPoKERU5H 2,SEE LES FOR aVER4 w I_,IV FROM WHITS GFCglsIRFACNON DiSNRRANCE LINE - LLTREE MITIGATION PLAN, r D 7Rff9TOBESAVFD, 77009 ovv�vvv P. SAGITTARIA LATI90(14 BROADLEAF#71I0WHDAO 3.ALL AREAS TO BE IRRIGATED WM.1FIA,LY ALTRAMTIC IRRIGATION SYSTEM•$EE L3.1,L3.2 AND L3..3. pp'S02 v v v v< 4.SEE RESOURCE CONSERVATION PAOTECTI0HARM REPORT ANC DNEETLDI,I FOR DELINEATION OF • C 6 j' '/ CAI4IX OBN1IPTA Aa11GH 5EOGE RESDIIRCECCNSERVAr1091 PRO1ECTION AREA BDJNOARY, E PLANTING NOTES p l W= B TREES LEGEND M .1u4C1/5ECFusus coMMGNRUBH a Ra g I.SUBCONTRACTOR SHALL PRWIDE TOPSOIL MIMENEN DMTZ km L11ACH AS �.`R'- SPEtlRF➢. ., BOTANICAL NAME COMMON NAME USEVTY. LI 1 SUNM4A39NATN RATER MM 2.Ail PIARTSSMALL BE INSTALLED INACC055I15EVAIN TNEOETAIlSAND 1 (1)AGER NWOq F9IILLUM BIG LEAF',LARD 21r2•CAL 25 ILO.PER1,003 SFE SPECSICATIONS PROVIDED AS FART OF IRE CONSTRUCTION DOCUMENT PACKAGE. %G6 R7E4,E ADDIS RUBR9 RAT ALDER 2 VY54L 55 - 3,TREE REMOYALANE PAOTEC7CINS"ALLEEPERARBORISTAFCOMMEN00TI0N.REFER 0 TOI7EE PRi1TEGnDN PVd1(L0.1)ANDARAOAl57REPGRTBY TREEOIOO d IANp$C4115 • O PSEVOorSUW1ME1421ESll D 00103 FIR6E'ISL 35 WEST SIDE YARo>3pIEFN5K3 TABLE' UNLIMITED,INC..COLDAC3:RAY KPIION 193 5 3 5 31 65 1WFOU)TOLu.COLH 9 ro1NM1 U O O OLtE.Gl7N kv P$E1maTS11GA MEN21ESil DpUGIAS F]R TD•17 Nr, a5 pLWTTYPE REOUIREU PROPOSFA'F]OSgNG A.CONTRACTOR SHALL VMS NEW RANTING AREAS AND NEW TREEL4CA770N9 "� t 3•CA1,544407Y TREE 4 11 FOR RcIIIEW BY LANDSCAPE ARCH1rECTPRIpq TO COMMENCING PLANTING "'�$AA 0 5Hl4MMJCATA WESTERN REG CEDAR SA'Nr. 3H WSTA1LlTI0N,p�Li 6U2'CAL UMOERSTCAYTREE 4 4 p V T"LUA%iCATA WESTERN RED CEDAR 10.12.HT. 54 PHIGHEVERGREENTREE 4 Id =u �E9 V 3'"IG s"r� 38 13 TABLES(FOR PERMITTING PURPOSES ONLY) M !�4R TOTAL 25s Qa F •RET3uIREMENTS MED ONTA9LE504B.W1.25TANCARO UNIT 60F THE .8 SI LAKE OSWEGUMUNIC5ALOOM DISTURBANCE/RESTORATION AREAS >e �($ RESTORATiONLEGEND i TOTAL AREA OFDI$TURIAIUGEvmHINLimSOF5G"$TRu5TLLN 91,455"t Y'; t. #11}I TOTAL AREA OF LANDSCAPE RESTORATION WITHIN LBSrsofCONSTRUCTION 55,2427 J9 > �} • mg x dD. � : REEroganpN FUMING AREA (TOTAL 51,4925F132 PLOTS) TOTAL LANDSCAPE 120351 sf • v •�•� PLANT SHRUS5IN RANDOM GROUPINGS OF 33.{iYPN7�I PLOT:II4555.F.}. L4.2 J �, IOTALARv'A DFLANpSGWERESTORATION OUr5BOE0FLBARS DE g1,981 si a, SE9DING CONSTRUCTION SUNMARK NATIVE EC SEED MMAPPLI£DAT 1L&PER Io50 SO PT SPECIES OTT.PER PLOT TOTAL SIZE ACERCIRCMMru4r 2 54 121S'BR RESOURCE CONSERVATION PROTECTION AREA(RC PA) PfANORA NERVOSA 5 ISO 4'POT 594LERW CEPrASIFORMIS 2 54 1 GAL FDLYSRWNIM WHIM; 5 MO IC�1L AREA SF 5 N WSES SANGU1AEU4r 3 56 12.15•AR RESOURCE CONSERVATION DISTRICT MOIST)PER THE 5RYSF -F SAMBUCUSRACEINCSA 5 W I GAL 10590EWE00 n 235.A6B Ipp m \ AREA TO EE DC-MAMAS RESOURCE CONSERVATION 0.7E 90� UPLAND FOREST UNDFRSTORY PIANTIHtl (IALILOT.9493F138 PLOTFR PROTECTION AREAIRCPA) II5,315 502 x4 m 4 PANT SHRU&61Nd ANOOM GROUPINGS OF 3S,TYP PALE 6T:16W SF.I. �DC z r SPE CICANAT 69 my,PER PLOT- TOTAL 520E OSw 110 12 UM E 12-17 44 TREE REMOVAL I MITIGATION OUANTrnES eo- 3 ADDIONIANERVO54 5 ISO 4.POT OEMLERIA125W11W 2 II 1GAi TOTAL NONFJLEMPr TREES TORE REMOVED 76B as 2-2' 010503GiVMM04r7!!A} 5 III 1GAL 3 Jy WSESSANCUWEUM 3 114 izIr BR 220 o 2 54L1BUCUSRAVEMOYA 5 150 1GAL TOTAL TREES TO BE PLANTED O Fw- ILL k•:c a k MEDIAN SIZE RC DISTRICT-FREES(MED DEN=151 1331115. r AREA AND 1A GREATER MEDIAN MO LARGER 1RESS IN RC DISTRICT 223 19) MEDIAN AND LARGER TREES 34 AREA MDR DE$IGHATEOASROM 139 413 _ awvvR• 1. rs wv VI 90 mx �L5 „ f Plika/ECr NO. P I75070 '8 90% DESIGN - NOT FOR CONSTRUCTION FIG $ N W ...I I , , I! -I ti I Y J I I 5i 1 I// 1 NO ��w 1,a f J ( `Il f___\r,...L,..: / lc ,III Yl f �lj, , V'-- $ , ,, ,J�� 7) fr 1 !!r"/ iER g }f 1 �-- f 1! �'r'Jr l/ -, r 1,J;(0( its �~ ;/,' / /.r�r. , J ,,T :� f - 11 },l EXRSTiNG WRt -y'i a �� r�4r1 I I I'� iR llr/ �rsoFmEERmGnTroN ,�t, �� 4L @gg� --7..---,.., ,,k: \� i 1 rn" ( I V l !'Mr RESTGRA7iDA'RAxt{Im° / J !� !C a tl pppp I Yy is t L Ir r 7 ! J;', V•i'S• � +' , EJ MHG GRAvgACCESS • n wr. • _, ,, + ;i I !,rl� }!yr 1+ 1 / , !11 \N.\,Akk...N.,".,.�,.-,- e`v i, .r. ' �G u, I i. i ! \\'a M- + 1 ORLnsOti 4 'V\ ) 1 \ /Vi/J_-I f a -r i ,{I f i 1, f, N4;,='� �eyf". •;s• • ;ti•. ti; hp p 4;1k r . 44,,'.n77ra r _ -1,- ash \ b � I ' ! ( I' I - ! •••� a :•^..!:- ELARGEMENT'S' �, ••hs°i• w. P' '4..F" -_�v�a�i�"d4§• F•• �•••- E 1 I } I' 1, i I It's ;:r'' fiR •ry z = •'• ati�r it � � ���1 I I r ti,;:;. N,NW\ket-_-_' � .+ �.h••d.•h.•4+ r•. ••Vf� �•A•:h•. :. 4 �fe w� - __ - ].'� [s , 4 1� 1 ,I r I (,�_iJ-�-J�- >.h�„ A\�\\� a , 4.,p�;� � z�.�..�...."�c•;�.. .�� - U a I�� +, P77:••• ? VT— Six:;'3r'a Ge, � �� _�. I W`S E VJI Itit !r i�'s a� \s i 105405FMITGATroNAREA mR7zRca� 5.q °� + ^ � ^�� I'��./ MRIGg110N FGR RC dN^iFIGf IMAAGf51N 1 cam Ir iU / If1, � a- -c -:- - `.•••`f� GRAVE7-\ SS :4-111PARR SEER 1174I.pJF710N7�q 1 I �i'qq GRAVEL ACCESS e-/IGi .:• i ,/ y MRICATIGN RAN g ,__ w:.41 i..40,VALOt., .4,Xiiii-afa..D.,- ,,,,,,-;_ - - --..-'00:''''4; ' 4111 ‘\:\\ \\‘ :,‘...\,s:*4\ - --— r' ' i r'( 'C) .;.4*.i: :..j1;i1-41116"11‘111111611inikatitt*t*I'''°:': --'-' -'l''-V*' ''N'\ '''\ \\N" ------=-----1: ' L—--—--—I II? 7.7 i ..,„„ , ,,,,,,,_ „..,....„..—_........,...,.,..„..,, „,........,v..........,........;....,,,,,,, .., , _ IFV\\•..`.,.•,..\\\ • \ TOAR FCILVT r ENEMN• 'r.-4 !:+' f �, l,rl i� 1}!r! ��j��rl � � � �� H pJ ,rl0\ 1 �l11 !] op Y � ` O + S: // 11 � ,- !- 11 O�t�f, 1 4 } 1 r rr /} y go, ,00%% � 1 1 ry i,' , t - -- 1 e�° ��. .rr 01 ,'�1 �.h�t� 9ava` ,r, n i .....— i i V 1I - �` ! f•" ' ENLARGEMENT'A ENLARGEMENT'S I SCALE r=z r SCALE t=m rr r.03 , NOTE SEE SHEET LtA FOR PLANTING nnr` rf � w'a L LA w a an LEGEND MAC`nv. — 175070 k• 9095 DESIGN - NOT FOR CONSTRUCTION SIG 9 1 i- �_.'(�.'fI J /�")�, rl- r ate P`�,1 Epp a i 3 f /,i Il°, 111'4 V , ,'P r � 1 f i E e q I; f; $; f• rr lr, 'a 1, el. -ft+r► rDIY' 1 �l #axe 74440 —_--- rl 'I I t I�ea/�,/iv!! 1 �~ .j1 i1\ EXISTING WR1 ' CRe 1 .45 co Ire \ '1 ir'ri r LIMITS OF TREEMI[CA111M1 r R%r Cs /,/ ,r ANDP srownomFuwtnlc r — t. ` flU i ! i� rrr r / I"r ._�� AI L lif�, 11 ® cri1t _ 'ii� 'l� i •y I 2' ! !1 r1y _ '(/ ,-f U' p ,! r,'0�► �i ,111 '0__,�1 r'l �_ �f"Y>> -.�1 ',�11 1! ' r_k' ' o�!' �, rig1 ,-L,/r r '� I / f3� �=' ` 1,1 ' _ , ( 1 i i i I ! 1 I I 0/r}• �� r / OL 1•r 111 `®�e ti> - _— - //_ C� _ �l 1' II k L I I�(" '�'_lJ � �! 1li L�'� �' r 4gA1aSA O �1 �r �w - - Cfy o r 1 _ b. Io, , �i .., ! 4' '® ' rolittet a, et-o' 0 _ rrr—r f �# s� !'r l! ��IJ,II� r r .y .�� rah � ���fi'�' �IQ �O Q�` 0 r � I �8 i ' rl/ ' -- �Y!... �4..2,6+�J, IJG Jam °• h AI •rr. .-0 -,4i I ter, f gm • / r , •?i it I,� -_�� e d c ors: C�_ I L ca i a r C 9� O Q Mi nr O Oilir 4' I 1 L• f' / Y ' 1 }i��ot /' •O���jipl�iy s ; wa z " a �0.1 '' f�j4 �l ®i/� ,1� �r 1�i91/-e'�i0 l' 1 •� �) i ,`�,� 1�1 �' { +i:tlf� / __ _I !" 1 * N II ��' ,.,?yl, f n h Alt �V� 1' �" I } F^z,,., 6 F {'i 1 L r f IA•' I I 0.. h:. irrr -ii rrr +. .01 r v- 1 _ Q °,— tan 1,i; �� , 7, ; , e• iI4',1 : rr�( tj ® o+e, '.. �11011�t* atiw ti h� , 11I �. s- 14r` �1i r , l ! • A 1 S I-„!I Pr.`„,,--, tl J � � q 1b ors U, ¢CO CO-, lr' l 1 �. ® j Il 1 7 ��= / r / rrp I; LIMITS ovTaelzRmcanal 1 1 •: 1 r 42�i,L a/,1;®•=' er1 1 AM W 4� / %l ` w' 1 ` �. 1= , i/ 4%1J AND RESTORATINFi iigG' i Gr O O pram m // it ; 7 ', ( I }, i���� _. Ns 1 ��t- r`, 1 I w§a ' / , ' , 1 'HIE-ane LANDSCAPE AHO r i f I` 1 % , ! r ,� �l —~ 'HI SCREENING ANDSCAPESEE ANO ,o Pll '/ r r L a , i i i ! f1 /'r1 t r c 1 - r ii � ram: 0 -- f- — Jff °'u�: 1 • flSWUM f I ) 'I _ ,. rF�43oua nr MIFroi la •� �0' BP WI BO PRa1FCT FN. 17FJ070 vP 90 o DESIGN - NOT FOR CONSTRUCTION FIG 10 N w CO 240 Brown alk-, Lake Oswego • Tigard Caldwell Water Partnership sharing water•connecting communities Technical Memorandum Final Date: September 11, 2013 Prepared for: Lake Oswego-Tigard Water Partnership Subject: Waluga Reservoir—Lake Oswego Resource Protection (RP) and Resource Conservation (RC) Delineation and Mitigation Plan To: Corianne Hart, Brown and Caldwell From: Ethan Rosenthal, Project Manager-Ecologist David Evans and Associates, Inc. Prepared by: Ethan Rosenthal, Ecologist, David Evans and Associates, Inc. Reviewed by: Phil Rickus, Ecologist, David Evans and Associates, Inc. Copies to: Terry Buchholz, Integrated Water Solutions, LLC EXHIBIT F•6 LU 12-0044 PcLcY 241 PIMP-Lake Oswego RP and RC Delineation Page CONTENTS INTRODUCTION 1 Study Area 1 METHODS 1 LAKE OSWEGO SENSITIVE AREA RESOURCES 2 Waluga Reservoir Parcels 2 RC Tree Grove 2 RP Wetlands 2 Waluga Park Finished Water Pipeline Corridor 2 RC Tree Grove 2 RP Wetlands 2 SENSITIVE AREA IMPACT EVALUATION 3 Waluga Reservoir Parcels-RC District and RCPA 3 Waluga Park Finished Water Pipeline Corridor—RC District 3 RC DISTRICT AND RCPA MITIGATION CODE REQUIREMENTS 3 LITERATURE CITATIONS 10 APPENDICES 11 APPENDIX A—FIGURES Lake Oswego •Tigard Water'Partnership 'C''aldweliu 242 shaping water [onnectrnycammunitie . „ . FWP-Lake Oswego RP and RC Delineation Page 1 Introduction The cities of Lake Oswego and Tigard propose to expand and improve the existing water collection, transmission, and treatment system of Lake Oswego to meet increasing future water demand of both cities.The overall Project lies primarily within Clackamas County, Oregon with a small portion lying within Washington County, Oregon. The project extends approximately 10 miles from the river intake pump station on the Clackamas River in Gladstone, Oregon through West Linn and Lake Oswego to the Bonita Pump Station located in Tigard, Oregon. This report has been prepared in support of a City of Lake Oswego (City) land use application for the Lake Oswego-Tigard Water Partnership project (Project). The application and this report are for construction of a new reservoir (WR2) near the existing Waluga Reservoir (WR1). The portion of the finished water pipeline (FWP) that would run through Waluga Park and to WR2 is also a part of the application and addressed in this report. The purpose of this report is to document existing Sensitive Lands within the project study area, along with potential impacts and mitigation for these lands. Figure 1 of Appendix A shows the study area for this effort. The following Lake Oswego Code (LOC) articles are addressed in this memorandum: ■ LOC Section 50.05.010 Sensitive Lands Overlay Districts Study Area The study area for this report covers an approximately 25-foot-wide corridor centered along the proposed FWP alignment within Waluga Park and the entirety of the WR1 and WR2 parcel (reservoir parcel). The parcel is owned and managed by the City.Waluga Park consists of tax lot ID# 21E07AD03100. The reservoir parcel consists of a recently consolidated lot comprising former lots 21E07AD00700, 21E07AD00900, and 21E07AD01000_ Methods A wetland delineation was conducted using the Level 2 Routine Delineation Method described in the U.S. Army Corps of Engineers (USAGE) Wetlands Delineation Manual(Environmental Laboratory 1987) and further supported by the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region. This method requires the simultaneous presence of hydrophytic vegetation,hydric soils, and positive wetland hydrology in wetland delineations. Field verification and re-mapping of Lake Oswego Sensitive Lands was conducted within the project study area (defined above).The wetland delineation results were used to determine wetland and stream boundaries from which the appropriate City Riparian Protection (RP) areas and associated buffers were then determined using guidance from LOC Article 50.05.010. Similarly, field verification and re-mapping of Resource Conservation (RC) Tree Grove areas was conducted within the project study area. Survey of individual trees and tree canopy was conducted by Westlake Consultants, Inc. Lake Oswego•Tigard Brown Water Partnership Caldwell sharing water•connecting communities 243 Page 2 FWP-Lake Oswego RP and RC Delineation Lake Oswego Sensitive Area Resources This report section provides mapping descriptions of sensitive area resources that occur within the study area. City mapping and project field verified mapping of these resources are shown in Figure 1. Discussion of impact avoidance,minimization, and mitigation, occurs in the subsequent section of this report. Waluga Reservoir Parcels RC Tree Grove A large RC Tree Grove occurs on the reservoir parcel site (Figure 1),which extends off-site into Waluga Park. On the reservoir parcel site the grove is dominated primarily by mature second growth Douglas fir (Pseudotsuga meniesia). Non-native invasive English ivy (Hedera helix) is pervasive in the understory and has outcompeted most native shrubs and herbs. However, a few scattered vine maple (Acer circinatum) and other native shrubs are still present. A Resource Conservation Protection Area (RCPA) had not previously been designated prior to the proposed project; however,an RCPA has been designated as part of this project. Designation of the RCPA is described in a separate project report prepared by Greenworks,PC (2012). The designated boundary of the RCPA is shown in Figure 2. RP Wetlands No wetlands or waterways occur on the reservoir parcel site, nor do any buffers from off-site features extend into the reservoir site. Therefore, no RP areas occur on-site. Waluga Park Finished Water Pipeline Corridor RC Tree Grove Waluga Park contains a large RC Tree Grove,which as previously noted extends into the reservoir parcel site.The FWP study corridor running through the park crosses through this tree grove (Figure 1).Within the study corridor the tree grove is characterized by mature second growth Douglas fir forest,with scattered big leaf maple (Acer macraphyllum),which occurs on a relatively steep slope. An old utility corridor runs through the grove. The corridor is well shaded by fir bows that extend into the corridor;however, the understory is comprised almost entirely of invasive Himalayan blackberry (Rubes armeniacus). Beyond this corridor a mix of native and non-native shrubs and ground cover is present. A RCPA had not previously been designated prior to the proposed project and because the project does not propose to remove any trees within the tree grove an RCPA will not be designated within the park as part of this project. RP Wetlands The City identifies a large wetland area along the west side of the park as RP Wetlands as well as an RP Stream Corridor along the south side of the wetland. Based on City mapping and the project wetland delineation field work, the RP Wetland area is approximately 190 feet from the edge of the FWP corridor study area and therefore it and any associated buffers are not included in the project study corridor. Brown , Lake Oswego •Tigard Caldwell Water partnership 244 _ sharing woter connecting communities FWP—Lake Oswego RP and RC Delineation Page 3 Sensitive Area Impact Evaluation Waluga Reservoir Parcels-RC District and RCPA A detailed review of RC District impacts and RCPA designation is described in a separate project report prepared by Greenworks,PC (2012). The follow provides a summary of proposed impacts. Impacts will occur as a result of constructing a new reservoir (WR2),maintenance and access driveways, and connective piping between the existing WR1 and proposed WR2. These facilities will result in the removal of trees in the greater RC District and the smaller area of designated RCPA. The majority of the removal will occur in the RC District outside of the RCPA. Proposed project foot prints, including setbacks and temporary construction disturbance are shown in Figure 2. Figure 2 also shows the designated RCPA boundary. A detailed listing of trees proposed for removal is provided in the Greenworks, PC 2012 report. The total number of regulated trees to be removed is 168;however, not all of these trees occur within the RC District or RCPA. Table 1 provides a summary of tree removal quantities by resource designation. Table 1. Tree Removal Summary by Resource Designation Component Number of Plants Trees to be removed from RCPA 0 Trees to be removed in RC District,not including RCPA 120 Total trees to be removed in RC District 120 Trees to be removed in non-RCPA and non-RC District 48 Total all proposed tree removal 168 Waluga Park Finished Water Pipeline Corridor —RC District No trees will be impacted within this portion of the project. Ground disturbing activities from open trenching will primarily impact non-native invasive vegetation, particularly Himalayan blackbeity. The project alignment has been developed to avoid all trees and minimize disturbance. Therefore, although there will be temporary ground disturbance during construction,there will be no project actions that trigger the need for establishment of an RCPA area within the park. Likewise there will be no RCPA or tree code mitigation required. Ground disturbed during construction will be restored to existing grade and replanted with native shallow rooted shrubs and ground cover. RC District and RCPA Mitigation Code Requirements As described above,impacts to RC District and RCPA requiring mitigation will only occur at the reservoir parcels site. Therefore, the following discussion of mitigation code requirements is specific to the reservoir parcels site. Relevant code sections are provided in italics font to foster the discussion. 50.05.010.4. GENERALLY APPLICABLE STANDARDS FOR RP AND RC e. Mitigation; Purpose Mitigation is a way of repairing or compensating for adverse impacts to the functions and values of a natural resource caused by a development. Mitigation may consist of resource area creation, Lake Oswego •Tigard Blown.:... Water Partnership 'Caldwell' sharing Water connecting communities - - 245 Page 4 FWP-Lake Oswego RP and RC Delineation restoration, or enhancement. Some examples of mitigation actions are construction of new wetlands to replace an existing wetland that has been filled, replanting trees, and restoring stream side vegetation where it is disturbed. LOC 50.05.010.4.e g. recognizes that true replacement of mature or complex natural resource systems is difficult and can take many years. Mitigation is discouraged by first requiring that avoidance of development siting within the resource he explored. Then, if that is not possible, actions should be taken to minimise damage to the resource. Mitigation ratios are established according to the type of mitigation proposed and the value of the resource. Maintenance and monitoring of the mitigation measures are also required. f. Progressive Mitigation Steps Required The approving authority shall permit development allowable within an RC Protection Area or RP District only if it finds that the following progressive steps have been met: i. Step#1 Avoidance The applicant shall endeavor to avoid detrimental impacts on the resource altogether by providing alternative site plans along with the development proposal demonstrating that alternative designs have been explored. If disturbance of a resource district resource is proposed, the applicant shall first demonstrate that intrusion into the resource district cannot be avoided by a reduction in the size or configuration of the proposed development or by changes in the design that would avoid adverse effects on the resource while still allowing development of the proper y. ii. Step#2 Minimization If the applicant has endeavored to avoid detrimental impacts on the resource according to LOC 50.05.010.4 fi, above, and the review authority finds that detrimental impacts cannot be avoided; then the applicant shall minimize impacts by demonstrating that: (1)Alternative and significantly different site plans and development locations on the subject site have been considered, and that the alternative chosen is the least environmentally damaging;•and (2) When mitigation is proposed, there will he no net loss of resource area,functions, or values as a result of development actions pursuant to LOC 50,05.010.4.g.v, Stream Corridors and Tree Groves, or 50.05.010.4.g.vi, Wetlands, whichever is applicable, Siting of the WR2 and associated facilities on the reservoir parcels site was based on the following considerations: 1. Need for WR2 to connect/function properly with the existing WRl facility and existing F WP. 2_ Geotechnical and other engineering constraints. 3. Avoidance and minimization of impacts to the RC District and designated RCPA,including consideration of the RCPA designation criteria. 4. Minimize disturbance to adjacent property owners, including required City setbacks, to the extent practicable. 0 Brovvri' lake Oswego-Tigard Caldwell Water Partnership 246 sharing were: connecting communities FWP-Lake Oswego RP and RC Delineation Page 5 Site designers iteratively progressed through the design process refining design (i.e. Alternatives Analysis) to best meet the above considerations. Because the RC District covers most of the reservoir site there was no practicable siting option that could avoid the RC District entirely. Furthermore,because the distribution of native trees, including the largest size trees, are spread relatively evenly throughout the RC District,no one alternative would clearly result in the loss of fewer trees and fewer large trees than the proposed alternative, and therefore there were no clear distinctions between alternatives with respect to being"least environmentally damaging". The proposed location for the new WR2 is just northwest of the 4.0-MG existing WR. The proposed location was selected to provide as much separation as possible between the new WR2 and adjacent residential properties, to allow ample space for vegetative or other visual screening around the reservoir, to match the reservoir base elevation to that of the existing WR, to site the new WR2 on existing stable grades, and to avoid founding the reservoir on fill or slopes,while observing site setback requirements. The topography of the proposed site is relatively flat from the southerly property boundary up to the recommended new WR2 location,but then begins to slope away significantly to the north and the east, such that the proposed location sites the new WR2 on existing site grades as far away as possible from adjacent residential properties consistent with the above constraints. Site zoning restricts maximum structure heights to 35 feet, and a variance will be required to construct the new WR2 to an approximately 50-foot tall overall height on this recommended site. Site setback requirements mean that the new WR2 needs to be located at least 30 feet away from adjacent property lines. There will be no net loss of resource area, functions, or values as a result of the proposed development. Although trees will be removed from the RCPA, this will only result from temporary disturbance during construction. These temporarily disturbed areas will be restored and replanted with native trees, shrubs, and groundcover so that there will be no net loss of RCPA area. Additional native plantings will occur throughout the RCPA, in addition to removal of invasive species.Wildlife habitat and native plant diversity functions and values will be improved considerably within the RCPA since the understory is currently heavily infested with invasive English ivy. Native plantings will also occur within the RC District areas outside of the designated RCPA,with similar improvements to habitat and plant diversity functions and values occurring. Proposed mitigation planting plans are provided in Figures 4, 5, and 6. Tables 3 and 4 summarize the total number of tree and understory planting counts and locations. A total of 185 trees will be planted within the RC District,including 65 trees specifically within the designated RCPA. This equates to roughly a 1.5:1 ratio of RC District mitigation tree plantings to trees impacted (185 trees planted divided by 120 trees removed in RC District including RCPA),which is greater than the 1:1 ratio required by the City. *Water lake Oswego •Tigard �Partnership C ;ltiayl 247 sharing water•tonnetting communities Page 6 FWP—Lake Oswego RP and RC Delineation Table 3.Tree Mitigation Planting Summary Number of Component Plants Trees to be planted in RCPA 65 Trees to be planted in RC District, not including RCPA 120 Total trees to be planted in RC District 185 Trees to be planted in non-RCPA and non-RC District 70 Total all proposed tree plantings 255 Table 4, Understory Mitigation Planting Summary Component Number of Po Plantst Understory plantings to be planted in RCPA 520 Understory plantings to be planted in RC District,not including RCPA 664 Total understory plantings to be planted in RC District 1,184 Understory plantings to be planted in non-RCPA and non-RC District 469 Total all proposed understory plantings 1,653 1 Water quality facility plantings not included in these counts. g. Mitigation Requirements i. Mitigation Plan When mitigation is proposed or required as part of a development application, or when required or imposed as a result of a violation of this Code, the applicant shall provide a mitigation plan prepared by a quaked professional that: (1) For proposed development, demonstrates compliance with LOC 50.05_010.4 f and this subsection. For mitigation of violations of this Code, demonstrates compliance with LOC 50.05.010.4 f ii(2). (2)Includes a maintenance and monitoring plan. The maintenance and monitoring plan shall include task timelines and quantitative goals to ensure the viability of the mitigation over time.As part of the monitoring plan, the applicant or other legally. responsible agent shall provide an annual report to the City Manager on October 31 st of each year for a three year period. The report shall be prepared by a qualfedprofessional and shall document site conditions with narrative and pictures. (3)Provisions for regular maintenance and periodic monitoring of the mitigation site. Failure to comply with an approved mitigation plan shall be deemed a violation of this Code and a public nuisance and may be enforced pursuant to LOC Articles 34.04, Civil Violations, and 34.08,Nuisances. The proposed development demonstrates compliance with LOC 50.05.010.4.f as described in the response to "p' above. The following constitutes the proposed Maintenance and Monitoring Plan: A maintenance and monitoring period of three years post-construction is proposed. Monitoring will occur on an annual basis, during late summer or early fall. An additional monitoring visit will occur Brown fileLake Oswego•Tigard Caldwell Water Partnership 248 sharing water connectingtommanities FWP-Lake Oswego RP and RC Delineation Page 7 immediately post-construction to assess mitigation plant installation relative to design details (i.e. species, plant counts,and quality of installation). Permanent understory planting monitoring plots will also be established immediately post-construction and baseline conditions recorded (i.e. number of plants by species per plot). Monitoring details are provided below. An annual monitoring report will be provided to the City Manager by October 31 st of each year as required by code. The report will document site conditions with a narrative and photos that describe the mitigation site's progress towards meeting mitigation goals. Mitigation goals and monitoring criteria are as follows: 1. Plant survival: 80-percent survival of the proposed RC District,including RCPA, tree and understory plantings at the end of the three year monitoring period. a. Tree monitoring criteria:A total tree count will be conducted each year of monitoring and will be compared to the proposed tree planting schedule (80 percent of 185 trees = 148 surviving). b. Understory planting monitoring criteria: Use of representative sample plots distributed throughout RC District,including RCPA. Photos of each plot will be recorded during each year of monitoring. Plant survival percentage will be determined based on the number of live plantings divided by the number of plantings recorded during the baseline monitoring in year zero (i.e. immediately post- construction). Success criteria of 80-percent survival will be based on the average of all plots combined. Alternate monitoring methods may be used if needed to improve efficiency or accuracy of data collection. 2. Invasive species control: Invasive species will occupy no more than 10 percent of the restored RC District,including RCPA at the end of the three-year monitoring period. Invasive species include those species on the Oregon Noxious Weed List developed by the Oregon State Weed Board. a. Invasive monitoring criteria: Understory planting monitoring plots will be used for monitoring invasive species percent cover. Photos of each plot will be recorded during each year of monitoring. Percent cover of invasive species will be recorded by species within each plot. The success criteria of no more than 10-percent cover by invasive species will be based on the average of all plots combined. In addition to the above goals and monitoring criteria, a thorough site walk through will be conducted to assess other potential issues with respect to restoration efforts (i.e. presence of trash or other unapproved disturbance). The walk through will also help determine if the monitoring plots are accurately representing overall site conditions. Monitoring plots may be moved or additional plots recorded if deemed necessary during the three year monitoring period. Maintenance efforts will consist of controlling the spread of invasive species into the mitigation site. Primary invasive species of concern,based on current conditions, include Himalayan blackberry and English ivy. Maintenance efforts will likely be conducted one to two times per year during the first three years post-construction. Maintenance may also include conducting additional plantings if there are unacceptable levels of plant mortality. The level of maintenance and need for additional plantings will be determined based on monitoring efforts and will be described in the annual monitoring report. 0 Lake Oswego•Tigard Brown Water Partnership Caldwell. 249 sharing water connecting communities Page 8 FWP-Lake Oswego RP and RC Delineation ii. Required Permits If a Division of State Lands(DSL) wetland permit,Army Corp. of Engineers, or other State or Federal permit is also required, the City shall not issue a building permit until all applicable State and Federal wetland permit approvals have been granted The reservoir parcels site does not contain wetlands or other jurisdictional waters. The project will not impact wetlands and waters at Waluga Park. Therefore DSL and Army Corps of Engineers permits are not required specific to these sites. The project has submitted permit applications to both agencies for the overall project due to waterway impacts that will take place outside of the reservoir parcels and Waluga Park sites. iii. Mitigation Complete Prior to Further Action Mitigation shall be completed prior to a final inspection, issuance of a final occupancy permit, or acceptance of a public improvement. The project will comply with this requirement. iv. On-Site Mitigation On-site mitigation is required where possible, taking into consideration the existing natural and human-made features of a site. If the review authority finds that on-site mitigation is not possible, then off-site mitigation shall be permitted according to the following priorities: (1� Within the same drainage system (as defined by the Lake Oswego Surface Water Management Plan or the Winterowd Natural Resources Inventory)and within the City limits;or (Z) Outside of the drainage system, but inside the City limits;or (3) Outside the drainage system and City limits, but within the Lake Oswego Urban Services Boundary. Mitigation will take place entirely on-site. v. Stream Corridors and Tree Groves When mitigation is proposed, the review authority shall require a minimum mitigation ratio (area of resource District created or enhanced to area of resource District lost) of 1:1 for stream corridor and tree grove resources. Based on City Land Use Department interpretation, the above code section refers to impacts to already designated RCPA and is therefore not applicable to the proposed project (personal communications between Eric Day and Jessica Numanoglu July 2012). Although the proposed project will impact RC District, RCPA has not been designated prior to this project and no impacts to RCPA will occur_The project will result in a loss of 117,351 square feet of RC District; however, 118,351 square feet of RC District will remain and will be designated as RCPA. Brown fa Lake Oswego •Tigard 250 Caldwell Water Partnership sharing water connecting communities FWP-Lake Oswego RP and RC Delineation Page 9 vi. Wetlands When wetland mitigation is proposed within an RP Class I or Class II District, the review authority shall require minimum mitigation ratios(area of wetland created or enhanced to area of wetland lost) as follows• No wetland impact and associated mitigation is proposed. vii. Vegetation Restoration Vegetation restoration shall be required to mitigate the loss of plant communities disturbed by development activities. In-kind vegetation shall he required for all mitigation projects, including frees, shrubs, and ground cover plants as identified on the Lake Oswego Master Plant List. The restoration plant community chosen shall recreate a diverse and healthy environment which is compatible with the resource. The proposed tree mitigation and understory planting plans have been developed in compliance with this code element. Only native species typical of the project Iandscape setting, including species to be impacted, are proposed. viii. initial Three Year Bonding Period (1)Except as provided in subsection (4), below, the applicant or property owner of a development subject to an approved mitigation plan shall post a performance bond or a letter of credit to the City that is equal to 120% of the value of the improvements installed pursuant to the plan for a threeyearperiod. The bond shall be posted prior to the issuance of a building permit to ensure the success of mitigation improvements and the survival of plant materials. (2) The performance bond or the letter of credit will be released by the City after threeyears upon receiving proof that the mitigation measures have been successfully implemented according to approved plans. Following release of the financial guarantee, the property owner(s) or other designated party (such as a homeowners association)shall remain responsible for maintenance of the resource. (3) If mitigation improvements fail during the bonding period and the responsible party does not replace said improvements after notification by the City, the bond shall be forfeited and shall be used by the City to correct the problem pursuant to the Mitigation Plan and the Conditions of approval. (4)Property owners of individual tax lots that are lots of record which are zoned for single family residential use, are not large enough to be further divided, and were in existence prior to the dale this section becomes ,effective shall he exempt from these bonding requirements. The proposed project will comply with the three year bonding period requirements noted above. • Lake'Oswego•Tigard 'gown Water Partnership C,4-ldwelt Mating water connecting communities 251 Page 10 FWP-Lake Oswego RP and RC Delineation Literature Citations Environmental Laboratory. 1987. Corps of Engineers W/etlands Delineation Manual,Technical Report Y-87-1,US Army Engineer Waterways Experiment Station,Vicksburg,MS. Green Works PC. 2012.Waluga Reservoir,Lake Oswego-Tigard Water Partnership,Written statement for City of Lake Oswego&City of Tigard Land Use Permitting Applications Sensitive Lands Overlay District. Prepared for Black and Veatch Corporation. Electronic file name 2012_04_16_Land_Use_Narrative.pdf. Brown 0 Lake Oswego •Tigard 252 Catdwett Water Partnership sharing wafer•connecting communroes FWP-Lake Oswego RP and RC Delineation Page 11 APPENDICES Ar, Lake'Oswego•Tigard Water Partnership Caldwell shoring tvC2ter�connecting communities 253 MP-Lake Oswego RP and RC Delineation APPENDIX A — FIGURES AP'k Lake Oswego•Tigard Brown Water Partnership Ca[dwell° 254 sharing water•connecting cammunrtres -1/1101111,111.4,1111-7. __, 41MllIllbVlpt._.. . - Pil. Kati ` \ } \ Y� 21E,07RD , I, \ 0001 - I�L �w x� % 3 1 [1E6xA¢' 21E07AD }1 1 A S 909P,t ooso0 - - } 21E0740 1 23E07AA 'I 21E07AD 1 5,..o 1 - 0 500 •1 00&06 01760 v"_ i. - - - lbi 7Av}21Eo7Ao, --, ;'-, '`.- —`\k '211=07A0 ,21Eo7A0, goyos 00505 , ' ; 1 oasoa 1-00507 I ▪ 1l Gn:� -- terltaV y-- 1- t 27E07AR r 11 dEOh1 -,. _ -. pOSpy 5 -I D100L ;, '---_� 1;20E07A0A - 1 0>)395 t S} "� 21E07A1> 1 Tu ,.,: Dom Il J • lE .t P ~ 20o51fD } ~'� 5 .3,t. S.-r�J 2fE0 AD d -::-^-'} -;.a .� - :',1't! F r p 007.'r t \ 1 "'-ems�— _1 - __ `� l 21507A13 t 21E97_40 i � I •- � � ii .� B-1�1!$c 111., � 0954? �90'J4:5 �_. __f 21E07AD: 21E07AD 121E07AL, 2J5GFAA' �L4S; _ _ __I a1800 I 0.1a00 91900 02000 t.'i _._......I L_�...._i.� _ ! .~ . SW Parkhill St - _, ' - - - L...7....41 -- 21Eo7Ar1 -. 121Eo7,tD i 2RED7AD ' 21E02AD.21E07A0 1 I} ��� a:,.4X, } r , ! 02400 ! 02300 -I1 02200 i 02100 f 1 '. f �, Waluga Pant , i �. �' r l I e1E07AU 0310 l ��'ir . j , +sFu't �� Y yi,.y V f 51 :, ;.• T .,3 I sr$ r v4 b`L,4 n .cam r:. ',m.'1 r'Z,.;, I 5 *AF.j:',..ii"',14.4,..tte'r*g .,),:itil''',':14,',/r/ .i' ' I 7 /0„, ..::'1"1/////////5'..-. - �Lh .,/ } ?`_'^ bra' . i II�r .yam - � k '4 -o., t7. ;3 1 . az Legend Figure 1 awaluga Reservoir Study Area Pipaline Layout Major Contour Lake Oswego Sensitive Lands Resource Conservation Area(Surveyed by Project) — Roadways Minor Contour Waluga Park and Reservoir Sites ..~ 25'Pipeline Corridor ��� P Gravel RcadlPaih Lake Oswego Wetland&Stream Corridors +—i. Railroad ® Lake Oswego Stream Ccmdor(as mapped by City) k_ n Fece CDtake Oswego Wetland(as mapped by Coy) Property Line Source Information; 0 150 300 2009.ESPI ArealS Online.World Imagery.Aerials Express(AEX).Portland,Oregon. al I 2010.Westlake Consultants,Inc. N FB61 2011.Lake Oswego Sensitve Lends.City of Lake Oswego,Oregon. -, 2013.GreenWorks, I I Ped,:P:;rrmvo ervp001VJE060001vs'ulcmgclfer,tl ussIW31u560Fig_01_Warugs—nesdnm_Ccnp9NarRm 09-1P 1,a...d Dele:9HW?019 1rms'10:10:1r AM User.man` _ 5 /✓— /` - \ j / 1 4, yam._ ��yyyppy �_ II f � /. 5 P1F53i R i' / �� a 3 ' R 3 1 / � 1 'fir y 7S1., i ' t EXISTING MI m fi S art i`1 ..... ,,,,,,:,,,,:-7-\ \I e p hl L.' L\\ 'N., \ , ., 1 1 I '-;' ' 1 1TMBr rI 14 4, i SFr' �\ / /i 1 111 111 if ! 1 1 � ''�i ��,FI 1 1II III11f IiII �l � 'r�(' � ; � . \ - _ L ; I \' ' I 1 I V 1 �.1_J,..,F.,..JJ}1Y' f „r`�_ v r „— _f1__ t�-- -. , 7. -r V '\ I(�t f It dal ' — --�1 Q1 ��I' kt N� l f I �� >b 3SS I ! 1�1j .j I 1 oils °g e 1 f %) I ,I / f i. I as I { fr'lI r _ 0 t .. '. ;4 - .I / I�, III:'I I i1 m� r I V, ir,( 1 •1 I Q j 1.I, • L. 1) ,/r .'.'',(s/i-T,-,-17--,,'..' ) . .,,.,..„1 .,-:_j-,-; ',4?1']! ::::-.: \ .:,. II!!MiJi : : )i' ==-=--z=,---- ii, . t----—----- j- I JJrr lij FBI I I f \ 1'- _,_-,---17(7 ArAr:/,' I( [-I. c -lit,. . i., _ ' -1 '..1, ' )( :.:/:' : - Hii -. - :/ !; r H '':Ebi.,_-, . ..'-,,,,,t______-______I-71'11---—-----I �� J i iT.1 ' . S 1y I I i��/�/Jr f; 1 1+1 / — ( 1)'t r i .ti t -f ``� IiiiLi 1(!f III!, ,t f /I/ ! %/ . I J - �t.�,� f WR2 Q � , J !r Ill /7f} W a ' �II/! , r i, i V J r r )I LMIf50F'o�FarRUGTroN 1 J'' I !11/f I Ir I r_ ',1r ' f I/I/li Lt. /'.. :�j rnsnnenrvce I I I Hi O w.�.I �r;r ' : r L f 1 ~ !,r l r I ! I { p�pERt1 �-- - i 1 +II �I' 11 , LEGEND 1\ 1 I ----3-� IF. +RES01RCf CONSERVATION DISTRICT PER THE COYOF LAKE OSWEGO '.i _ _~ t �''I 235,BF85F uvowm: P enm: I 1 j ~ - o4evp:awn +r MK?Au r� M e5 RESOURCE CONSERVATION DISTRICT PER THE CITY OF LAKE OSWEGO roPROJECr NO.` 175070 r FOR RCPA REPORT I FIG 2 i PRELIMINARY - NOT FOR CONSTRUCTION co in N r I ' I - .' \ ---i // I — ''' ' ' ' 1 1.‘:.< " .:cL.,j';Ift t.!''.:.';'.):'-: ', ',4:,,.. „,d,:' . 11'':i':1 ,_.; 1 1 iii 1 i i: �— ) I ?a `~ / '• p ' 1 EXISTING WR1 I I E g1 �`` r - r' 01 C r : sE f _ l' - ¢. 'a - I t a 5 �r ,r Jf/ za •flI1 117"' Si �`\ , III � l r � ) I lI I i y1l-j- ' / i �A , \ 1l III x l 1 �r i +l 'I i is / C fI � p�pp� r _ ,� Vzf �\ 1�l ' ( JJi-T t RT�r I+ J�E f ! Lt e ,/ i 1 I, I r 1 y,f t i / \� �e 1 I I I I r I r�_ ! ! .�.r l�- \S �, (t 5 1 1 ♦ :,_,,,:i---_ ,...-::: i r I' l il /.1 / - Il 1 K i, I tut y � �II� f + + �• 5< 1 �j. —" I Y3 I 1 r' ;.�� �'� r��11!1 I�� ��r' 1 'k., ►;?:'h J/� �...- /- L—• .,'' �! ;r rlr /, l r.}1 'i _ I { om. 1 V `I k i +` I ; I fr1 �� I1 J1 1 Ii � .,j �` 'l'1 . I �! iFn •I I t; ' ),..i.,• / / (,, . „,i ,2.,, -j .../ ,\-i, „ : „ . :,::::::, —______ '''/ if/ i j' / I.-,:•-. 1',•-,',,:.:-;:-.1,.';;, '.'" --,'41, i 1 12,,,,-A-:_-_,) /1,4<-- ..:',) • .-, ,•, \-: --'•''' : i: i!':ili. J/,-''.-1 JS it r�/ ' /' f �� - f �'`r'�I ' fl �rtlwRe1 • �I•, Y14 �% ' / Ir '1 q' ` 11 fri.r tiq1 )1;,::I..'\j.__!—'_—:. 17r r I rI. ! �) r1 e / wwI/, �I�r��r+ I 1 I ,. Ir I / fr r / .� r I; .--�_.k - LEGEND /l 41 / 1+ii 1l}I �\ f �' rll •,' i iaseoesGNnhoasR�sarscewsEnvanoNraoiEcnon msanl COw l T ' fr/,//��J J I"^ 1 ,J l` Ulan OF CONSTRLCTIOH I { �.J }-�I C l rr. III+� r 1 1 II ,,',/, / ` o blot&NCE I 171&df58F 'i g /JI r +'+ + I + pt' p ——�— RESOURCE CONSERVATION PROTECTIONAREA f i��� Il� / \lfi AREA SF % �� ' Ir Resource con errauen Ols[rlcf per are City al 4 ff —' I Lake Cswe90 RP) 235688 Eva n ! orunea. ' ��I�I � I Are.to be Designated ee Resource I / �' I#I _l Consenalion Protection Area IRCPM 118.315 50-8 I !irl?/ .._..............-.-.-.. -._ ._ eR rro,damn l6 (PROPOSED)RESOURCE CONSERVATION PROTECTION AREA <d p .. n T;ro: 175070 t FOR RCPA REPORT +•-« FIG 3 21 PRELIMINARY - NOT FOR CONSTRUCTION L7 LEGENDS k g NOTES 3i` k TREES TO BE SAVED!TO BE REMOVED LEGEND STORMWATER FACILITY PLANTING LEGEND g 0 TREESREAIOVEDBYOTryINPREYNIUSCGN7TUOT RESTORATION NOTES WTTHIN LIMNS GF CONSTRUCTOR 0101URBW4CE LINE BDT;WICAL NAME CGMMON NAME 1,ALL AREAS DESIGNATE', FRAMING ERETORY PIARTNG ARE TO BE 0.EAREO Of INVASIVE PLAIT � ' SPECTES PRIOR r',TREES POTENTIAU.Y 1MpAcTEb, ALUSTRIS CG0M7N SPIKE RUSH 1BFROIB LIMBS OFGONSTRUC110N DISTURBANCEL94E r ELEOCIURL9P 2.SEE I�.I FOR OVERALL TREE WEAPON PLAN. ggk17 J 4 i TREES TO ik'SAYEO, vaVavv 1 SAOITTARIAunFGLIA BROADLEAF 3.ALL AREAS To RE IRRIGATED FULLY AUTOMATIC IRRIGATICNSISIEM-SEE LI.I.L32AND L3.. _v E v v v 4.SEE RESOURCE CoNSERJAT7GN PROTECTION AREA REPORT AND SHEET LDI.I FOR DELRIEATION SF 4 i a I' v CARE%OBNJPTA SLBJOTI SEDGE RESOURCE CONSERVATION pflOTEf.1gNAREA BOUNDARY S�8 g K//xh/x� PLANTING NOTES i s k= - IY YY� ®G TREES LEGEND uAcusEFT1 sus caMMokkusH g 3 a a 1. SUBCONTRACTOR SNAIL PROVIDE TOPSOIL SOIL AMENDMENTS AND MULCH AS `S° 8OTAMIGAL RARE COMMAN NALE SIZE on. SPECIFIED, ��, SUNRAgRNATryEWATER Ol1ALTT1'SEEP MIN 1 g O ACER AIACRQPHYLLJIM Bl�LEAF MAPLE 2 us.CAL 2� 2�ALL DSI C042E19W ACCORDANCE VUC THE OETAILSANTI !E yS 9 1 LB.PER MeV SPEcIFITJLTIONS PRGVP3ED AS PART OF THECONsTRULTON DOCUMENT PACKAGE O L SrQR O Mall RUM RED ALDER 21?CAL. 52 3. TREE k9AOYP1GAD PROTECTON SHW.L BEAERAgBIX{{ST RECO3MAENOATIQN REFER AFw • FO P5E11opTSVG4 MENOE511 pOVCdA3 MN WHY 36 - TOTREEPROTECTIOH PLANRD,1fANOARBCRIETREPDRTBYTREECARE6uV1OGEAPES MI. � A WEST SIDE YAM SCREENRiGTABLE' VNLIMFTETI,IRO,CONTACT,SOY ANION I$gq.5yS9155I MF051 I II.Gd.}} t• T u 0 PSEUDO-mop,MEN U DOVGLAS FIR 1a12.HT 46 II4E'0.6 w,✓ PLANT REQUIRED PROPOSEOIEAI$TM1D 4.CONTRAOTORSNAl1 STANEiIMITG OFNEW P:ANFINGARE49ANO NEW TREE LUGITIDN3 sPy� % h THWA PUMA WESTERN RED WAR 9-0'HJ. SR 3.CAL CANOPY TREE 4 11 FOR REVIEW RY IANOSCAPEARCHITECT PAIDA 7OCOMMENCJNGPWIRNG ��9pb ARG�'F V 1-11B•CAL UNDERSYORY TREE INSTALLATION. pj!k 4 4 6 E 0 TWAP1CATA WE STERN REDCETT4R ISA?HT. 64 E HIGH EVERGREEN TREE 4 II �JJ �GTw� 501142134'ss 31I 93 TABLES(FOR PERMITTING PURPOSES ONLY) 1�- �� 'RECUIREIAE1R88ASEo 4N FABLE SD.B6.001-2STATIphgOIEJRBGF THE W n •1 E) 1 lAKE95WEGO MUNICIPAL WOE, DISTURBANCE!RESTORATION AREAS >41 RESTORATION LEGEND Ib o L"+! `if TOTAL AREA OF DISTURBANCE NWIHMLIMITS OPCONSTRUCTON 91,I55A X r .11 V' iii *� TOTAL AREA Of LANDSCAPE RESTORATION OF CONSTRUCTION 5S•BW41 4.a >s - • RE2TORATN3N PLANTING AREA ® mad a 40s g aft♦ {TOTAi31T91 SF T67A1-R7IFA OF 145505 5RESTORATION 1yO231N �.V. RAM SHRUBS IN RANDOM GtiOUPWGSGF}G,(TYPOAL PLOT:IBWS.f1. ` I TOTAL AREA OFIANDSCAPE 4E8TT10.ADON OUTSIDE OFLMTTS OF i 4 ,, "ISEEDMGCONSTRUCTIONB1,991M SUNMARK NAME EC BEEP MBTAPPLIEO AT 1LD,PER 1ppp 50 FT SPECIES OTY.PER PLOT TOTAL SITE ACER CRUMMY x 54 4215 Be RESOURCE CONSERVATION PROTECTION AREA(RCPA) MAHON%NERVOSA 5 162 4'POT OEA;EWACERAS1FORMIS 2 94 1 GAL POLY51RkIVATMU767UM 5 163 I GAL AREA SF 46 fli R+BESS4NGUWEUM 3 51 1E-18'RR SAMSUCUSAACE1405A 5 1511 IICaLL RESOURCE CONSERVATION OWIRICT IRO DISTI PER THE CITY OF ISO LAKE GERMERNIVEN AREA TO BE DESIGNATED A3 RESOURCE CONSERYAT70N 115,519 5p2 �T�.1 ~ UPLAND FOREST UNDERWENT(PIANTRIG PI{07EC1IaYAREA FORM , ��L7 ea CC Ap' �� (TOTAL 6g9l98F136 PLOTS; 1-1 PLANT SHWAS S1 RANDOM GROUPINGS OF iTYPICAL PLOT:IBM S.F.}. I SPECIES 61Y.PER PLOY 76 512E y ACEFCIAGNATUM 2 74 12.7a•BR . LLI W MANCWIk A'BRY0.4A s ISO 4.POT TREE REMOVAL!MITIGATION QUANTITIES Za c 0—lu OEMLERMcEPASTFORMIG 2 74 2 GAL, rryy� PCLYSIONIR1DESSANGGAlE WTWA 5 I97 IGAL RITA/.NONEXEMPT TREES TITRE REMOVED 13S w � W TCGM d 1}4 ib1B'BR w 5S RACEMOSA 1AD iGPA TOTAL Nall To BE PLANTED (4)Q �`4 �ti sAMEllw MEDIAN SIZE RC DISTRICT TREES(MED CON=15'} q z z NH 15. Q AREA MO it ti WEENIER IEEDUN AHD LARGER TRE£S IN FE DISTRICT 223 Ne MEDIAN MO'AMERTREES IN To AB 139 B2 °..' ` a.:I 'ae a 61' S*rn r m� TnoaFcr KP. 175070 si 90% DESIGN — NOT FOR CONSTRUCTION FIG 4 00 N 11 r rr ! 11 I 9 r I i I I r 4 /, N XI 7 I�r �ti ga rr` I V�'t1 i � .�I�j.f. �'M CV\ i 1 ___\..,f_, �- I ,!' /r,'r.-`.J/!i+'I- r��`1 '' , '�,- �I I�� hJ/ L,� is ---- � ri�1 �� 1 �i ! I L rl�ifl !� t£.: r� ��r'"r - _ J{! Q. — - - t 1' r r ? / I '!. v„ EXIGnNGwR1 a S / r _ r� rrrr ! I�I I 2 P - ��,i ff �� ��j -• ���f t �cwnrsof RuRuuTon ,M +� a 5 I I / r r END RESTORATION RANTING /rs / r y B s, ili'ir r 1 + "/ I,r'-i' I' GRAVEL ACCESS �.I VA .. : _ t d1STEGG t , 1 1 I I' !t Iiv }1.I I\ r i /r �q���\Z� .AVA1\ . •�'+x.�5� '' d• I „1 02EGON W 1\ I I f J , 1 III 1 r r I . I J� "y-Patie•.+:,5;,..•:.,•:•:•: .• . .i ti. RI::• _ F� •4 ,+ ` f/ I }���-+,f �f 1 ••�•�,•;'.;,:ti`. �Ra�..•F::, x• v,.+r .. �.�y `�a p1iG� -r I ��I f .• •r•.•• F• ,` }k"&"ram..,a L sc'. P'� E �'tl ''1` i r 1 r ' i ' 1 r r f f - ,i 1 :.a.".z.6."._u 1,44,0, :.•': • F. 4 �•° x..^.t•. $:41:4.P ' .';�,•�• _ : t y 'i��4\y I I I r A 1 1 1 r1 J';-77\1\7*1 t ,+•••:.+•-' ti�� �� � .•'••� v t`• •• !e.'N MA.g,tt:4'•'•1A.� .• ,-4L. ' �'. - V �� , , . •'.1.‘' *\', __,„,-. f--_r _ _ „, � I i 'f:fip•'t�7 \ 7I 17z Y. \ i ,: w- i 1. 1/4',/i4%*';ir ne,T.,,Ii.\\ • i1 II/Lam' r j , f {`y .� + ,rr,:; 1:1:::,:p�,43 6igfie;'1 r/YYR x \ A /. ,y,• %I f f � - 1 i l I 1 f j l Col(lr((, ' -•.x401:i`� 1 fr -` \ .r . �� yr,, / 1 I 1 I h�S,i' : 7 , \\ _ STORMWATERFACANY ENLARGEMENTS N xp / •sI ff C A. 1 i� r ! 11 F 1 I }��,� /� \ \ r,,.'• a* 9 r :::::• • I - {'� 1;r / if l! 11r -1\: �'! +"....� .. A\ �' _ �� f-c0H Q4 :+.° I U I i r j/! r 1 j } r G+Il r l Fr l •+�'.`+`y."_`\�1 t . ,� 7.� 1 (ell i I� w 0 w 4 ��fl 4r141117'ti� ! 1 il'+ 1�,t�,,lfF,1�1i rj• ! �� . ..'rig I feel fr tiw ,°�q u )) p� �r l l l l ��i} r+! � I t 1,l �r ( �w.�z.=- ��� ► ( t y 2 W I/ r/ i I - ✓` I1 i Ii r } l 1 r ' 1I`. , ��� Ii� 1 1 A. W0- I r1 n. 41'` �,1 EwaRGEM Ar 1) ' umrsaamEEMmsaraN 1 ►�'• rria `9 11 r _� 1 ANGPFSIGRATIGNPLwNNG ♦� I-- r r q !r . i .7,' i f /7 i 1 `, T I'r l t I �+ I _ A wesrs LANDSCAPE SEE TARE G/J I �' S/a���. b T-� o i (f �', . SERE ETN1NG.SEETARLEGNu.v A 1�� J W 3`1 rr ! l ��1 1 r I r 1 t `` !}r 14 4 f _ ` { 9C J 11' I i 1 � 'I r r J� + I I 4 { ► a I'V fir•'•• ° 5 a4 - /r r + I I 4 I ` �^ {r► ( i II •ill ►���� iv v v _i J o O. ft Oil ZA:Idi Ili 1 �� t I�*P.�fs �: �, /i - ETrANiGEMENT A,I 4/ Y_ -_ f ; ENIARGEMENT'S' wr: SCALE 1'#G' SCALE T-20' t,M99 B• r .� NGTE:SES SHEET L7.0 FOR PLANTING rar Toru1.99.4.9On Cr 9 m RI. LEGEND PANN-bc 1 J5G70 $ 90% DESIGN - NOT FOR CONSTRUCTION F75 5 I I 1 �' i 11 \ I 5 E J I 1 I `J. 1 r R yam. i/ ' l� S ''' I 1yIiqT nu 1A �`�8 I I j' S 45:4 ��15_ i! FIG IS _ _{ —.may �$y C :rr I w r. , c' Pli � f a€ J \\� ;b- �' , 'fI.a''J�',`fr' / ','�� ��� 02 g I, •.'.1��, y�o1 r,r�I .�w � + �ill I� oli 11Ncwri1 5 a ,II @ + 1 I II III I :"! _---- OPTS of uNoPasmRr ';!I r } ! � ',qAW� 4 r gf ,w/,,4 ' Ji- a "^ RESTORATION PLATTING ti r r r if , r /i}!�I' Ov►' ` (et/ 1•- 1,' i e a ie � t� 1 1 1 1 r �f 1 r I�'!� 1 r r,,If II`! (( OQ+ � l�� , V.,' 'l , I, t! 111111!� `i 1 )I 1 1 1,i I I hl; r ( !' I/r r �:� y-� + l�r + yr1 O OP , ., isk_. " 9v 1 r III JJJ� ,\ 1, \,\ % ! } �'�T I , l , r r '�q/� , 1! am �. �. _ \�s-� _ 1 + , , ,I 14 1 + �I .fir .J tl@ (�j( q� �a®�Q\ d . � Q:tea 4��q� � �,� { a� 9 11 -"jf� �1[. [ram ! +I �'I l ,^ \I'Opp, 'AL-.1� t \ `, je ,AC,'it .0 r.' i 1 -- t. _\\ 1 g �I ' r I ; , �p III' }tr A✓ %1 0O 0,4e � ,-%-` N' Yi d LLfJ"-- r.. Si H i i /,r �f !11. I+Ij_I 1 y 0�F c®� �'„alb��.®04►a i; 1-'!' I l'r I sm tO" + ,,+6 u '.,.:r� _�--" "Pi w O r.0 1 - 1 I ea ,. r•cr7-/II tl' ( . ---- ;------1.----7-15-„ .I''':i-\\eic.,,i'slii:•i'iiii• II( ,''-)ieri(.'/Ir- 1_ I ,/---1---- '..kg t - 6,_(-)414°1- ) gi)I k,,_ _,__7__J, ,, ,, ,,, , , .,,,,,..,..„...,:,>:,.„„,.:, , „..„..„ , ,,-0,,..„,. , , ,,,,,„ .,, , ..-- -- 0_ ...),,J,. ...at, i il, ./7, ,, / ,..„.,..,,. ..,,-;,“,c, ri ,i,;i.,),,,gie2.,,,,,......,.2.,?4,0-:_. oft . .; -,-.-,, __ _,, . ,m, sts. 0-. .37 COM N,,_,,, ., %- ,I 1 }' I etivO� frl;'(j4, �40 ° WRz' i.®O INV v 1----_______A 1: LN r 1 1 OAP 4�,6p 4y� L 1 O eel) --— j)"1 1� ---1 il 41 09 1 k r ir' I ! p �� p -01 y I Lul— 1 �ggu3 -- 11\1 115 t 1 I I t :I r �,f r`�`���il[ ' �l�>;< �-.. ` ��1� �'� I �a I p�W Oti ,( if q 1 ,*A—, 46 • {� /! 'r��/ � 1 I� I � �' p1� v" � w '�J/ (+1I1 0. < rf /-r1 ' II i i, �1 .► �0t0-='' waa w ;�]!{' �YJrI I } } ,/1�,� 1j Iir ! 1i/I �q�� ti_ �}Or df.1Q! aw i` ,/ r. j�y r I_ r'=r ' + 11 555 1 � I I I 1 1 014J w i / ti — Qa ' I6 ! ,/po lr r , ; ��(/j'�7Lr ' ,-,uMlrs aF Limas-rm. I I ! } 1 --: j RESrcRA1i pt MIMG I / I',rr 1 I I r 1 ! _1 l _ 1I II 'i`� --- _-- I I I welsri i° o.rrrK rs .v e m ec rm.:acr MO. 0-1 175033 el PRELIMINARY - NOT FOR CONSTRUCTION FIG s 0 CO N Prelr nr aE y Drainage e Report Wu uga Reservoir 2 (VJ12) Submittal Date: May 24, 2012 Updated August 8, 2012 Land Use Application Prepared for: Prepared by: Black and Veatch Otak, Inc 5885 Meadows Road, Suite 700 17355 SW Boones Ferry Road Lake Oswego, OR 97035 Lake Oswego, Oregon 97035 Phone: (503)443-4418 Phone (503)635-3618 Fax: (503)443-4499 Fax(503)635-5395 Contact: Sean Goris, PE Contact: Mike Peebles, PE email: gorissd@bv.com email: mike.peebles@otak.corn as Otak Project No.: 16234B � P �,�$,G , "_ I �� • -,.e.N r` EXHIBIT F-7 LU 12-0044 261 Table of Contents Preliminary Drainage Report (WR2) Page Project Overview 1 Vicinity Map 2 Project Map 3 Existing Drainage Characteristics 4 Proposed Drainage Conveyance Systems 7 Stormwater Detention Facility 11 Surface Water Quality Facilities 11 Operations and Maintenance 12 Reservoir Overflow Detention/Conveyance 12 List of Figures Figure 1 —Vicinity Map Figure 2—Project Map Figure 3 Existing Drainage System Plan Figure 4—Grading and Drainage Plan Appendices Appendix A—Stormwater Quality/Detention Calculations • Soil Survey (USDA SCS) • City of Lake Oswego Surface Water Management Atlas (Pages 33, 34) • Detention Pond Worksheet (Detention) • Extended Dry Detention Pond Worksheet (Water Quality) - Outlet Control Structure • Orifice Design Worksheet (Extended Dry Detention Pond) • Conveyance Calculations (channel, pipes) Appendix B —Reservoir Overflow and Drain Pipe Sizing • Overflow/Drain Calculations • Pond Volume Worksheet • Orifice Design (Overflow) Appendix C— Operations and Maintenance • Preliminary O&M Guidelines Preliminary Drainage Report- Waluga Reservoir 2(WR2) otak 1:1project\I 62001I 6234blwaterreslprelimina rydrainagereporc0808I2.doc 262 Preliminary Drainage Report (WR2) Project Overview Project Description Project Name: Waluga Reservoir (WR2) Total Parcel Size: 6.78 acres Proposed Use: Construction of 3.5 MG Water Storage Reservoir, access drive Location 4800 Carman Drive, Lake Oswego Tax Lot: 21E 7AD 700,790 Vicinity Map See Figure 1 Project Map See Figure 2 Drainage Characteristics The site is on a wooded/vegetated hillside which slopes from the south down to the north at Carman Drive. The existing drainage consists of overland flow with runoff to adjacent properties and the Carman Drive right-of-way with culvert(s) and sheet flow conveying runoff to north side of Carman Drive. Design Standards City of Lake Oswego Surface Water Management Design Workbook, December 2003 Edition. Preliminary Drainage Report- Waluga Reservoir 2(WR2) 1 otak t;proiectl[6200\16234b\waterreslpreliminarydrainagereportAE08I2.doc 263 Preliminary Drainage Report (WR2) Continued Survey Mapper Clackamas County Survey Information System I LES i A, ISIE T yoN�e Roctlaod ?,f NNi4:15�� g 0 11MBERLINE Li�c,..,, p MELRb'iE `PqP ‘1.---"4 -5 Y `4- Oac ak mas•Courof C7 d0 $ 031AN RY,GLUB o \ !r1 a e NRt1S,B A J' Yei4pOw +►4' Proje' .le EL•cpolstrW1 trA ! . County W 1��* u gNY 00' f Lake Oswego i]' rt ,0 Ao.. 6 3 uKe dove �'$ � o n J AlA� TQJ ,, eaaC'0 1 4 1 �sw fH.5kM E ai 4n .,,,,,A ff ��RF CAE MTh F.E�'t'e et/Fr Q.4' U �4 ,'rna ClaCka141as Co my Tualatin w 6� i .7 /I �ERGS'S �� �( JEAN =3 v >~ �� m o 6 —OvesrconN z W t Z T Scale 1: 36000 ,0+�' S c°� 0 4.--)IC: 0 0.2 0.4 0.6 0.8 mi f • ----- I .. IV Townships Streets At Freeway 49 Expressway At State Highway Major Arterials N Minor Arterials }1/ Local Streets A/Cities FIGURE 1: VICINITY MAP_ N.T.S. Ili' Preliminary Drainage Report - Waluga Reservoir 2(WR2) 2 otak 1:1project1162001 i 6234b1w ate rreslprel iminarydrainagereport.0808 I 2.doc 264 Preliminary Drainage Report (WR2) Continued Survey Mapper Clackamas County Survey Information System I dos Ok,� t 110 441 ti EA'CO�g K'3 0 4. IS- 0ALE6V000=--- AIR t1A•H— n Ilk -tit* 4, talk , ‘ QC.tt,pb 1416 AIL AilL\N(- it Lakes / �t�'A� N4[fY� At /f *�` , t- 4!ILLIli ir Ilk itp \ 4- 111111 i 11111 1161 ..COL LINZ ciack3maS C ►e 1 CS ; b 00GLR;,. O Scale 1: 5000 !yI 9 0.03 9.06 0.09 0.i2 mi II 0 r Streets I �J N Freeway N Expressway N State Highway Al Major Arterials A/Minor Arterials N Local Streets A/Taxiots A/Cities FIGURE 2: PROJECT MAP N.T.S. Iii Preliminary Drainage Report - Waluga Reservoir 2(WR2) 3 atak I:Lprolectl 162001E 6234b%waterres1prel iminarydrainagerepart.0808 I 2.doc 265 Preliminary Drainage Report (WR2) Continued Existing Drainage Characteristics. The site is a wooded, vegetated steep sloping hillside with some flatter areas at the abandoned residential building and in NW portion of the site. The vegetation can be characterized as mature, second growth, mixed coniferous/deciduous forest with a thick understory. The existing Waluga Reservoir is located in the southeast corner of the site. The storm drainage system and overflow/drain pipes for the existing reservoir will not be revised with this project. Two existing residences are located on the project property. These structures and concrete driveway pads will be demolished/removed prior to reservoir construction and these areas will be pervious in the proposed site plan (see Figure 3). The existing topography divides the site into four different basins. The east, northwest, and south basins will not be affected by the proposed improvements. New impervious areas (tank, access drive) will be added to the central basin as part of the proposed site development. There is no public storm drain system in Carman Drive servicing the site,An existing 10-inch culvert on the south side of Carman Drive,just west of the existing driveway, conveys surface runoff to the north side of Carman Drive. The outfall location of this culvert is not identified on the topographic survey and could not be located in the field (heavy brush, steep slopes). An existing public storm drain system is located east of the site on Carman Drive.A public 18-inch storm line connects to a private storm system; a series of 18-inch, 24- inch, and 30-inch storm pipes that conveys runoff through a drainage corridor north of Carman Drive and south of Meadows Road. The storm pipes outfall to an existing open channel drainage to the west that conveys stormwater through the Kruse Woods developments and is routed back into a storm pipe at Kruse Meadows Center and across Bangy Road, and west under 1-5. The existing stormwater conveyance system from the City of Lake Oswego Surface Water Management Atlas is shown in Appendix A. Existing on-site soils are classified as Helvetia silt loam (37D), 15 to 30 percent slope, per the USDA Soil Conservation Service soil mapping. For calculations, soils are classified as Hydrologic Group C. Existing conditions, topography, proposed site plan, and drainage basins are shown in Figure 3. Preliminary Drainage Report - Waluga Reservoir 2(WR2) 4 otak I:Iprojettl 162001 I b234b1waterreslpreliminarydrainagereporc08c8I 2.doc 266 e II n� EXISTING SITE SLOPES ? c``r` ¢ ROPE OVetArale ERALL °'aATVRRFhO gE ggp D-'/OX 289.135 SE a7,RfI F� - - '1 - ` "Y OM-!AR Si • - - + F 6�t 93T BF II.BB9 SE 3� /Y` °.�--L r`J 4ilk$ .WW 6,1133F _...2.0073F i jyrtee .ir- .S\` 7 4 15 h TOTAL i1S,212 SF - OARS SF - V I' !' ,�+ �] a } yf i I e1;)r„r1;r /"l`ir�JJ / A71JI�1it t , I k i`" J f rll4: 5/ is �,,. ''J / 'i I//!/II',/11 T'\\1.l .... JlffIVi',.i •,1l� / I / I /!J I,! l \1r 'Pi 4lfd.I 11,` !! 1 /JJ��lJJ, r J J (r� J1 I1'Ifl'� JJI f p' 6 • • �� CONNECTION r/`,,r 2Y! ,II rr/ // J I , I�IrJ ( yyam�,I'l�lll' p;IIII '1}Fly G e-g TO EXISTING DOWNSTREAN - - ' /� • rfr/J I�1 (,// ! // I-/ r 4',!l�rlll'lllll'I li 411A\4� I fe a e?N STORM SYSTEM - !1 r` f f.i-'•`} //[.I -j f ,._ 1 f/'llkl'(,1 IV ,,,,,,,,„r, WPLDGA RESERVOIR NO.1 1 IIp1V!'J-.,, - ," 1 r /11- ,I I 11 VIM1 /' 4qIN/, i./Nail.:PI° FFE R00 RA22V ��1. Ih -�_ LMITA IST1JReANCEouETOt{}pI '''JC.) 'J� '/li-441\Fli,� '/}jfl�= * • TEMP Y CONSTRUCTION _`\, f r ! 5'1 1 1 ) l 1 - ACCESS ROAD AREA TOSE e I _ - / 'All.:: /e`Y. 1 I' RENE TATEO- 1 /,1 14 , //?1 1}l�'1 N.N�ti 4 / 1.,.3 • I -,4S'41 jl Ir II !/i.l"i!'� �'', 1 / ] �`�\�\1: Jar 1. f, . \ l 1,1"1 4 /r 1Ar WRV TANKOVERVLOW ' / 1 r / / /., 1`‘ r ` F- 1 .��• A, i'' 'I'r r r r I1, t / J// JDETEFTOH PONO I I 1 ,, \y ' - - 1, ZR 1 \,\,,>. �C\ 4+'''.i-1 I'j i j 1 1 J I J�Jr I I'r J 1,'r 1,J r', I /-aorrDM e�ev..2sa T I I 1 � J ."I i` 1 y ^ )-i�f 'ti i 'ems\ t 0§ �9 i- 1 >, \, I/ J 1 I 11 r 1 + r r J r y •T'MJ1%wa ELEV-- 1 J ' 'i 1 1 1'I 1 r _ a-.- ✓11`\� \� ♦• #; -- ```., ` i 1NvYc41-1,i ) / I I I'R �Il•f r f�".i,1 'lcl�fl,r I.. 11'.?\'I'' ti'f 4 'j c+.. _ " !i'a� �,_11>t, �1 .i Rii `./ } 1'.. _ r 1 d- -sat, . , V ,,S-'' Ft\I' I'l1l r.,11 !1 I i 1 J 1 1.? J/-y41 �3�r,�r`r / •' • f :IC!\ ,.4 ......r:„. \ ]` t . ,�-,1/.��..�1 - -r:'' '1^ _ eui 83d ' }.] I f .I��' I I I f''-/I mull II , l/! / I f�;1�J' / .. 1 1 f� �M.� `i .y- � �'. Ste ' �i ,, 1 ,t `111 I 'Lf ""'"`✓, -� , -I i t , I J i — _ y ', 1 .;!, �=',.j?:T , PFr O ,- _ l .�O g -., ; 1 ! ,. , 1 ., I r . / /-1 — L 1 i,i --' tr y 0- *a ,_t4 • 11 4a f i r l,�1 s -`t;,• ,r .' r )ryr I , :'=�-r . , .—_ 1 r�'° ! y I ,,.; 1 u' 1 1 I k} ,\ I r r p k*.-V I, I /S' =y 1 ',+, r J r VT KRG61' t P1 I'4i Tr E / r-�� 0-t ` / `` • x ,_ f= , r'"'- ' i� 1 002 RIIIIIIi i I}f :}, • '^I CpMrRDLMRFROIJ ll / .J'= drl �11 i : ff 1 ` W a,! a , OVERFLOW POND / i lit TRAM d' !Q ! 1'I I ,f 'IN,....-..-. 11 1 t 1 1.F y STORM WATER 11 ,1 \ ,'I.'' '!- `} WR2 TANK • i I, I IS r ii 1 ,i 1 •J f`f, OUAIJn FILTER 1 1/l I ��, y 1 f 11 L{i I C] OVERFLOW INLET E f l fl 1+ STRIP �� 1 ]1 J ^T-.', I� V k\ WITH AIR GAP i Ii I I J 1 rlr ■Tq j ryr i,� , 76•=.i'./y y y,1 f �� '; a J}i�� 1 t r ,,f' . t,� tis!r oictliRn . i...„0, q+g z 1e?�d, _ ,-._r , r_. / - Y - _ __ FJ{I;H'1'i 4._ i 11 !� / �' Il 1 �1ya cs..,..,uet�a �.rC n 9�q► f a - ,, - - --- --.---- ' -- xlSTfl�. a LllLvelar/i, r f1 s a�*' 1�jyA6 'r: !Ta-1 a)11s .��, tea.", t # / a51.4'' II cQ17fritLl 7b P1Q1YH / I/`�� �T I�L'�y��2' �hM oDNraoLAR fl//�� „1 1 rt \ 1, 1 Is� l � /I/ / ' /�DWU5yT/i>; Yl/Y q 1 FROM MU Mr. - � 1 / ,gr•r F /S , 3 1 / T il' 1 • ��.�y ��y� ` r ©©©--�<s pj'.1r,Y1 PONo /,'J [� y�f �T. $` . 1I 1`W. •'V�/) _�/[[ ! , J gl � 'pY I QJ,�,��+1��t[{[��' / �7r ltu ,NEGOA/RE&B VOR NRR l �1 1 �, r] 1 , 1'1N- I za REMOVE 1TfFE5 AND /;7r `' _ IJ-' , .�G ,I ' 1 rl-T +/!/ ` L. �i` y(y���12p) �1 l �".j� ., _ ' .IA • 1 I I ��' (0..VEGETATION TO Y.I 'C ,/9!/ Jai' _.I. r -/f, + I rl,l....,,,'I FO IN ca ..---. I I�J1 4,,,, k I /I,_ Z' PROVIDE kMPROVFD • ✓r_Ml'/5 [{ {y. ; I' .1= {A Il}y /}I ` I fI it SKIH7 DISTANCE 1,,,,- /. I ,.,�y�,/'+f tf y I IE( ,�t �J i,-` \\tit, ( , g. - - - ._-' JI..I _ i 1 11.1 W 4// 4//r <. 1 j3 J ,--11 1 1` .. / ! f': 07, 4F1-S1* ",j W�,; 1 y �p57J/ c ,/i / r - / 1I I F} -r 1 d�.r�� I' {. O41,.. ETDRM . R 11' 7 l rlil 111 t "1 11 I s 'f .1 r'J a ` '.1 v.*' J� - - --__ -4 �y� Wc4 "1! ! IZ' /STORM WATER QUIWTYI I //Il1 ///rll.11ti.ITI ! /'/ Pl � y,.J , V 'i • Q.ry 11 �x11 4 rjC '/- / SDETENTIONTORM POND ERR , lI ,f[ r I/.,,,MrTB OFparllRaANCA✓f } 'l- rl• , J -. 1 .(7 �aoTTwI ELEv.-2635 1 r t 11 1 r'aa..�TALL'MMORMY •r J /7 1~ 41 • 1 fry . .--1 ,% r-,fWOELEV.+2a{Aa I .I' I I11"'OCRSTRGCTIONFENCE, r f ,r1 _ h't 1..-‘'7� a�-7 - 'll 1r -t wC� y�it, M RER/3 ELEv.266.a % ( ,i_. '}.r♦•, r 1 O Va !,,- % x/i / .r�i` '; i _' /�!r /�r�'1 I r i i 1 I �1�1-�Y�L�l,>'G -„ -� _.�.+� .� .. h '° �• I ." r/q r" '•.l %11 `\mil-}1, r ' r / S+11,i'I'{, rlll}1 11. T.r 11:� ..s....r ,,, I. L /J..l',1 - rl/r 'rr�'�r F�l 1 , -` , . ,(� f l l / J r! ly I r, I 1171 1, 1 4 } ,: r,1 �yqr %.r / 1 1 f , ./,Y r J TnIT J If1.-r�1r1� ,, r.'. n,r+1r r x �1}, i err+ :c" , f:.,i 1:;j0/J rfrfJ ' 1 . /a J ; ✓� 1 , J ' -f.f 11,1'n �" . /. p,,7, /I r ram: /. / £• ,/ /r1 .t-1 ,l 11\ �1, •.t / f if / I I ! / J i l }����� J !- - �. I .I ! r d\r I',,,, , J.1-Y M11M( f x�n: w • • I /'/1 i•:.VI°J,1 r.': .. ,� 1. 101. GRADING AND DRAINAGE PLAN ° ,° ' 1P Iwo 175070 ii PRELIMINARY - NOT FOR CONSTRUCTION AFT Ni) CD N rn Co I nc EXISTING SITE SLOPES e SLOPE OVERALL CI$TIIA$EG 1 - ' RANGE SEIE AREAil - 3 F 0-DM m2,168SF- l8.83A / ' 1 / j li 20%-5" MGT BF 11.6848E 5ry1, * ,1�r q•i •3014.-.-_15,1109E 2.0073E - °j� �6��dI Tarr alaY/s4F B73xs3F n � + �rt "ay err = ! �.--Y ` 1 r (r r Ell ! r%l' `, y ,1L. 9 frr �� , r V III J,1,!` /r \ 4t.. � lr -/rill�17'iPi llll ', r (d{i'r+� ��� / l ,,/ rlrr 1151\,V i /' ,11,1,1lj..,,� � $`, r 1, - /,1 , ,r 11 , , , J/' 'lII,fil,II l A1 0 COI NERION Sri f I �,1rr r/!I rr r (1/rr 1/ lr)�lr j/i,1 ¢1Y, 4 ` -` TO EXISTING - - `// Irl 7lr 1J,Fi hi 1 ,f i..1 ,/. f111V1+,1, , 1 1`IIV� E ' .. OOWNS7NEAM r/I t T f 1 1 I I l y ! 1 1 II 141(I { WALUGA RESERVOIR NO 1 I�IR y *t l[i. STORM SYSTEM _ -:rl oIr l I%/l' I /ff _,,/rJ _i - I 1 l�t�r41 I �11 R1 1�'i r( �J) t ryryVy 11 •- \ =\ ,�r 113/ r'•..I I r l it ;,,��„ If I IL ', iaA(IEE I;1�1 FF P192.20' 'f8 1/ ` \ , - ! lor./ r 11 1 7''''',,^/f/'1PI 1. I - /�/A}e,,,, A1 ' II/, r 1 i I I/ l 1}'/ , , 1�.r r/th4 t 1 l,',r • '♦ _ LIMITS OF TBSTUNBAAT;E TXIE TO J r J 11 1 r ., it/:".IIr6'y I /jrll l�1 �' TE2E.S5 Fla COAREA 1T)BE ! f I -A r /! y I5\ !. 1,1 .�. `,; ` RE-VEGETATED AREA TO BE 1 I 5 �- 'ti,,Af,I 1 1.115\X l\ Ill. },b .. REA,EGETATEf) , ' r �/r l J l , t ti; , . ,�t'i'}t ' ,,r'ir ; / rl1 dr:I/ / 1 .I r! ?-r.•./,i , ,.",a V ,-,,� T` I f� 1 1 1,31�I`S 1 ` , 1 I/�, WR2 TANK OVERR.OYJ I,' ( / I r-! 1 rl/l ,'�1 „l, b -\�"\\, t t.. , .i i 1 i{1 l f 7 ,r r , i t i , r r! IAETENFION pONU -1� r E�s", r�r!..\+�.�'l r Fi 1 1. _'g }I \:..t ,,;I i i I I I I J f ' /, ! ! I,r7� ,r r ! 80TT0L/ELEv. taa I ! r L ,- •r l +y , 'mo t \ U .,.. . , .Y 1 !1f! 1 I i 1 i 1 , , ,,/;/.Lr i'-' I LEAK Wa 6LEN.'283 1 1 1 ' f I 1 1 'f C i l - 1\ C1,',f ` / 1 is \L. F g I , � ,�W1il ��11 r ,ti\+J! r1 !%... Y -''*-6 `1 1 tI I f / L 'r,- ,r s jr.f/i'0 I �= .� Ir V`1 I I- � �"Y�y T tT J r I I1,, � �T yT 1• r . • 5 '' • _ iv'�, 1 i IL 11,1,��`• .. Ilf:`jlA` `lIl,/l jl I�.��-1 �, ' . - ` i d r ,7-- i,,�'� I ",' =` - 1 - . 9� }bl-T. i-��- •¢ fl l 1 1�5/ ! 7 A :;} y .k 1 -,ii��` -'.I ?. r'/ r ' 4r_ p it iili1 tf, r, -,. /' ,, ."1i _-f" ,i• 'ir�il '711AA}} CONTROL CIE1'11ii Il Yrlr, •: WAIL LE PE ,• OVERFLOW MkFROOM -,1 , . 1 � � 'I I�If/' 14� I !F•/ STORM WATHi WAAN�'NNN 1- I•J I 1' WRY TANK 1 ",1 I I•! STORM FILTER y l y/1 l 4:\1'f,I r.l I 1 I ,�r+ . c.ERFLOW iLeT �I _IL ' I. /•,i,1 1 f% p -`�__5"1 I_I I ! 4., 1 r �,�,•,\G' m _ f WRNAIRGAF I 0 )45 ! .r 1 fir=\' [y ! ' E • rim% -,, t e 1 1114� �,, ape nM1tW4� r 'Iv 11fi , • - I ; #.yE+��x.41 1 .�c� x �,r'�.,1^'-r coNrRGL MN ,�- Slr,'��r/�y 9,, \ r `> I 1' I 'JI 4 1 CC /,r/ _.,/,_ 1_r" 's .b"s•0 Ei' J {r FRON WGEOE7. 1,....�• .u.-- I'I f 'F, ] ` + f `II`V;I� IrIlt �,, ••rem �g0 ,- f'v 4 f 'f�/I l I FGNG ..,„,0.7, r_ 4' '''r': 4" ,�' 11 I \. !' +r I q ,r 1....I.y � J>�r '.A 1/0 i._L-r1 1l'» /,9-'f'~I� - jiI WALUGA RESERVOIR NO.2r ' 1-I 1J I �� m �jlh I s l 2/ r I I Iilr ,r/r{/ r L . ryNi27 ��'`x t ��: t I �%` , 'y h• I-1�''w REMOVE VEGETATIONTO 5�/ � / J� �'` I �. ! I / I,rf,r.J111i ROOFORAINOUTFALL 9.5 MG - �1 ',.TO -4 �� 11 I�xO is / Fn. i.lr 6rF._.r1 I TOORAINAGE CITLN �' - r Y y� c"+i PROVIDE WI:ROVEa (`l '� f,..r , FF �- ,I I', fr $ 31611E DISTANCE l .-AF J/ 1 r{ / '1 (", - 7� / '''4YAi r W L • 56/l! L,T VY:S II\V 1 1 1� r 1 I [C /.4: rr fi y) rq/rr •/ / , I �jir :, '` I i�i r- r/ "I 4' 1 ¢.� •_—_ _ I Zy �`~ . I r /i%�/r�J, 1 I • _l- /II xi. �.�1t tt. 1 /f l/I -'-11 AZ?J 11 } ''jf./ •_� -- �~Lll M ,lr.� r I �'l 1 /!r ))I:"T 1`` `I?I1 i , 4'.. r/ o ✓L :J \ J . __ , YY �' ,?�, '~ / NWATERTYr1 r r f: 1I1 1 1 f�,l 4'T�•17 f 1 1 l / e i 'J , 1 'G�� /j Lu a.a. U O j l OEIENTgNPONO j IL 1" �, I 10Y9t1 LNAITSOFINSTURBANCE �: r /1' ' j1', 1 V ▪ C7 Ilx BOTTOM ELEV..aus 1 1 II r ! r 1 1.. ((.$TALLTE3,IP0RAAYf rz° - �-,� '�� �'` v WOELErI.•Y6A.8E I r111• �'•'+CONSYRllCT10NFENCE 1 1 ` / 7 r Ilif I Cr)l r..�r' 7:NAXWBEIinlees r 1.1 I I l rI ' 1 s. 1" - a c11''q, r., r r 4' /1/ ' ! ' I r I l i+`v"i .,..1,..,-:‘' r =� I ri , r y'N ,/,,Y.•,,°l-`. 1 4 f , T r,1 1 1 1,1 ,~,f 1 1 1 i' r+ " • , . pQ ,/:r.[ JI 1 -�\ ^,-r1 / f1i,i I I , ',- YI .- ! r !r/f f,���//'r r h 1 1 1 5 � !1 r i I 1 r ' 1 1 r ,,, I 1 1 + 1 Vc , ` C. 1 1 lr,r/, l` R Y 1 IY r I , ! / 1 11 Il, ,'-,).1-.);,?,", 1f 1 \_ s1 _`lam ( I I I f I i It l.kl,p fl I r J� /r ,Ct tip, Ir..//�'' , t5. L I y�y- i f til rlr ti.�ir�h/r/r' r I 1 i,a E I .') , ' ' /, 'r 1� atit� �� � _ _--- rr' , r4i//fr,f �- �:, / Jr,.. r li/ itJ.rflll-frLY, I f ,( 1 ii_ , , .. I f , , , f-.J-r I , r I r 1 ,_ I E 1�A J 1 r ! , i f,(r!N�.Y, I i I FI,r , I`SSA _ • �. _ -.. -. - - i ///'\ J r11/1�'' I .!/�fll y J� I I i r�'f./:1' I r{)�s'¢ .. • / ft'-:4'44 2, ‘ ' i , -r.1'...4..' I /l; r rgr' -- — . GRADING AND DRAINAGE PLAN • : ''•+a �- 175070 it PRELIMINARY - NOT FOR CONSTRUCTION Preliminary Drainage Report (WR2) Continued Stormwater Management Facility A proposed extended dry detention pond is proposed to provide water quality treatment and detention for the majority of the new impervious areas created on site. Preliminary detention volumes for surface runoff were calculated using City worksheets and are included in Appendix A. The required detention volume is 1,906 cubic feet. Preliminary water quality volumes for treatment in the extended dry detention pond were calculated using City worksheets and are included in Appendix A. The required water quality volume is 776 cubic feet. Preliminary volume calculations for the extended dry detention pond are presented on the Pond Volume Worksheet included in Appendix A. The total volume provided by the pond is 3,731 cubic feet (3,731 cf> 1,906 cf+ 776 cf). The bottom of the detention pond will be at elevation 263.50. The maximum designed water surface elevation is 266.5. Six inches of freeboard will be provided prior to the emergency overflow back into the open channel along the access road. A preliminary grading plan and schematic of the pond outlet and control structures are shown in Appendix A. The outlet structure for the detention is located in the access road and will be accessible for maintenance purposes. Periodic removal of accumulated sediments from the pond floor is expected. The slopes in the treatment/storage areas of the pond are 4H:1V. Above this elevation, the slopes are 2H:1V to minimize site disturbance area, with the exception of the slopes on the east side of the pond which are held to 4H:1V to provide access to the pond bottom for maintenance. Surface Water Quality Treatment An extended dry detention pond is proposed to provide water quality for the majority of the newly constructed impervious area of the development. The extended dry detention pond is sized for the total new impervious area of the site.A small filter strip will be provided adjacent to the access road downstream of the extended dry detention pond to provide some treatment of the access road area that is not routed through the pond. The extended dry detention pond worksheet and design parameters are included in Appendix A. In addition, a pollution control manhole is proposed as part of the control manhole structure for the pond. The percentage of phosphorous removal is shown in the following table: Preliminary Drainage Report- Waluga Reservoir 2(WR2) 11 otak 269 ;project\I 62001 1 62 34b1waterreslpreliminarydrainagereport.0808I 2.doc Preliminary Drainage Report (WR2) Continued Water Quality Facility Phosphorous Removal Standard Extended Dry Detention Pond 50% Pollution Control Manhole L 15% Total Removal 65% The water quality facilities for this development meet the design requirements to remove 65 percent phosphorous for the runoff from 100 percent of the newly constructed impervious surfaces. Operations and Maintenance The operation and maintenance of the detention pond and water quality facilities will be in accordance with City of Lake Oswego Standards. Preliminary O&M guidelines are provided in Appendix C. Additional information and a summary O&M document will be provided with final design permit submittals. Reservoir Overflow Detention/Conveyance The design overflow rate from the reservoir is 30 MGD (46 cfs), so the design of the overflow system consists of a storage pond area to attenuate the overflow through detention and controlled release of the overflow event. The sizing of the storage pond and evaluation of downstream impacts from an overflow event is based on an overflow duration of five minutes. A detention/storage pond for tank overflows is proposed west of the new WR2 tank. Tank overflows will be directed to this pond by a pipe under the access road. A control manhole structure will be designed to limit flow from the pond to approximately 10 cfs. Outflows from the tank overflow detention/storage pond will be conveyed to Carman Drive via an underground piped storm system.A new public storm line in Carman Drive from the access road to the east will connect to an existing 18" public storm line. This existing 18-inch pipe has a slope of 0.82% and a capacity of 10.3 cfs. The 10 cfs discharge from the overflow pond could be conveyed by this pipe with no other flow in pipe, so assumption is that overflow does not occur during a storm event. The downstream storm system consists of 24" and 30" storm pipes and open channel flow that has the capacity to convey the 10cfs of detained overflow event (assuming overflow does not occur during a storm event). The drainage design for conveying water from a periodic draining of the tank is based on a 2-day duration to drain the emergency storage volume (storage below elevation 322.3). This results in a peak flow of 10 cfs, which can be conveyed by the proposed storm drain pipe and existing downstream system assuming the tank drain does not occur during a storm event. Reservoir overflows and tank drain calculations are provided in Appendix B. Preliminary Drainage Report - Waluga Reservoir 2(WR2) 12 otak 2 710ojectl 1 620011 6 23 4blwaterreslpreliminarydrainagereport.0808I 2.doc Appendices 271 Appendix A—Stormwater Quality/Detention Calculations • Soil Survey (USDA SCS) • City of Lake Oswego Surface Water Management Atlas (Pages 33, 34) • Detention Pond Worksheet (Detention) • Extended Dry Detention Pond Worksheet(Water Quality) • Outlet Control Structure • Orifice Design Worksheet (Extended Dry Detention Pond) • Conveyance Calculations (channel, pipes) 272 DETENTION VOLUME WORKSHEET (January 1996) Project Name: Waluga Reservoir 2(WR2)-Land Use Application Date: 04/27/12 Computed By: Mike Peebles Phone Number: 503-635-3618 Company: Otak,Inc. Address: 17355 SW Boones Ferry Road - Lake Oswego,OR 97035 A.Required Release Rate. (10-Year Storm for existing pre-developed site) 1 3.00 acres (A)Total Site Area 2 Woodland,Soil"B" Existing Land Use (chart 10) 3 0.30 (C)Runoff Coefficient (chart 10) Sheet Flow Use Manning's Kinematic solution for sheet flow up to 300 feet 4 300 feet (L)Longest Overland Flow Length 5 l5 feet (D)Drop of Runoff along Travel Route 6 0.050 ft/ft (S)Slope of overland flow line,feet per foot, =D/L 7 Woods,dense underbrush Overland Flow Description (chart 8) 8 0.800 (n)Manning's Roughness (chart 8) 9 70.66 min. (Tc)Time of Concentration Tc=0.42(nL)0.8/1.58(S)0.4 Shallow Concentrated Flow Use overland flow after the 300 foot maximum above. 10 360 feet (L)flow length,feet 11 47 feet (D)drop over the flow length,feet 12 0.131 fl/ft (S)Slope of overland flow line,feet per foot. =D/L 13 5.70 ft/sec (V)Use Chart 9 for unpaved slopes greater or equal to 0.005 ft./ft. 14 1.05 min. Time cif Concentration(tc) Te=L/60V Open Channel Flow Use for defined channels. 15 0.00 feet (L)flow length,feet 16 0.00 feet (D)drop over the slow length,feet 17 0.000 ft/ft (S)Slope of overland flow line,feet per foot. =D/L 18 N/A Open channel description. (chart 8) 18 (n)Manning's Roughness (chart 8) 19 0.000 f/see (V)Use Manning's equation to calculate flow velocity. 20 0.00 nun. Time of Concentration(tc) Tc=1.160V 21 71.71 min. (Tc)Total Time of Concentration(line 9- line 14+line 21) 22 0.57 inlhr (I)Rainfall Intensity (chart 19) 231 0.51Icfs Peak Runoff Rate(pm-developed)Q=CIA D.Developed Site Runoff Coefficient. 24 0.59 Acres Impervious Area 25 2.41 Acres Pervious Area 26 0.30 Runoff Coefficient(C)for new Permeable Areas 27 0.42 C Composite Runoff Coefficient (line 24)X(0.9/line 1)+(line25)X(line 26/line 1) 28 I.26 A X Cc Total Site Area (line 1)X Composite Runoff Coefficient(line 27) C.Required Detention Volume. 291 1.906 Cu.Ft. Highest Volume From Detention Volume Work Sheet Impervious Area Calculation existing proposed buildings/pads 3,967 - parking/access road - 12,594 other(tank) - 13,273 total 3967 sf 25867 sf 0.09 ac 0.59 ac 25 year developed flow(conveyance) Q=ciA cA= 1.26 Tc= 5 min. i= 3.02 (minimum-conservative) Q= 3.80 Appr du7A DETENTION VOLUME WORKSHEET (January 1996) Project Name: Waluga Reservoir 2(WR2)-Land Use Application Date: 04/27/12 A B C D F F G Storm 50-year (A)(Cc) Inflow 10-year Storage Detention Duration Storm line 28 (B)(C) line 23 D-E Volume min. In/hr cfs cfs cfs (A)(F)(60) 5 3.43 1.26 4.31 0.51 3.80 1,140 cu.ft. 6 3.14 1.26 3.95 0.51 3.43 1,236 cu.ft. 7 2.91 1.26 3.66 0.51 3.14 1,321 cu.ft. 8 2.72 1.26 3.42 0.51 2.91 1,395 cu.ft. 9 2.56 _ 1.26 3.22 0.51 2,70 1,461 cu.ft. 10 2.42 1.26 3.04 0.51 2.53 1,517 cu. ft. 11 2.30 1.26 2,89 0.51 2,38 1,570 cu. ft. 12 _ 2.20 1.26 2.77 0.51 2.25 1,622 cu.ft. 13 2.11 1.26 2.65 0.51 2.14 1,669 cu.ft. 14 2.02 1.26 2.54 0.51 2.03 1,702 cu.ft. 15 1.94 1.26 2.44 0.51 1.93 1,733 cu.ft. 16 1.86 1.26 2.34 0.51 1.82 1,752 Cu.ft. 17 1.79 1.26 2.25 0.51 1.74 1,772 cu.ft. 18 1.73 1.26 _ 2.17 0.51 1.66 1,794 cu.ft. 19 1.67 1.26 2.10 0.51 1.59 1,808 cu.ft. 20 1.61 1.26 2.02 0.51 1.51 1,813 cu.ft. 21 1.56 1.26 1.96 0.51 1.45 1,824 cu.ft. 22 - 1.52 1.26 1.91 0.51 1.40 1,845 cu.ft. 23 1.48 1.26 1.86 0.51 1.35 1,859 cu.ft. 24 1.44 1.26 1.81 0.51 1.30 1,867 cu.ft. 25 1.40 1.26 1.76 0.51 _ 1.25 1,870 cu.ft. 26 1.36 1.26 1.71 0.51 1.20 1,866 cu.ft. 27 1.33 1.26 1.67 0.51 1.16 1,877 cu.ft. 28 1.30 1.26 1.63 0.51 1.12 1,883 cu,ft. 29 1.27 1.26 1.60 0.51 1.08 I,885 cu.ft. 30 1.24 1.26 1.56 0.51 1.05 1,882 cu.ft. 35 1.13 1.26 1.42 0.51 0.91 1,905 cu.ft. 40 1.04 1.26 1.31 0.51 0.79 1,906 Cu. ft. 45 0.97 1.26 1.22 0.51 0.71 1,906 cu.ft. 50 0.91 1.26 1.14 0.51 0.63 _ 1,892 cu.ft. _ 60 0.81 1.26 1.02 _ 0.51 0.50 1,817 cu.ft. 90 0.64 1.26 0.80 0.51 0.29 1,572 cu.ft. 120 0.53 1.26 0.67 0.51 0.15 1,100 cu.ft. Required Detention= 1,906 eu.ft. 274 ikpaG�-d+v A EXTENDED DRY DETENTION WORKSHEET (January, 1996) Project Name: Waluga Reservoir 2(WR2)- Land Use Application Computed By: Mike Peebles Date: 04/27/12 Company: Otak Address: 17355 SW Boones Ferry Rd, Lake Oswego, OR 97035 Phone Numbers: 503-635-3618 New impervious Area Calculation. Total Site Area: 3.00 acres 130,680 sq. ft. home sites: = 0 lots @ average of 3,030 sq, ft/lot= 0 sq. ft. buildings: 0 sq. ft. parking area: sq. ft. sidewalk area: sq. ft. street area: 12,594 sq. fL other area: tank 13,273 sq. ft. Total Impervious Area: 25,867 sq:ft. 0.59 acres Design Flow Rate. Design Storm: 0.36 inches of rain falling in 4 hours. Calculate the volume to be treated. Vol. =(0.36)X(1 ft./12 in.)X 25,867 sq. ft. = 776 cu.ft. >c---- WQ VCI.Uw e.. imp. area volume Calculate the design flow rate over the 48 hour storm period. Flow rate= 776 cu.ft.f(48 hr.. X 3600 sec.)= 0.0045 cfs volume Page 3 XA 275 ay POND VOLUME WORKSHEET Project Name: Waluga Reservoir 2(WR2)-Land Use Application Pond: Extended Detention Pond Computed By: Mike Peebles Date: 04/27/12 Company: Otak Required Detention= 1,906 eu.ft. Required WQ Vol.= 776 cu.ft. v.6.0V 4 II,Gt l>o-1Vp V O L U M Total= 2,682 tuft. lEnd Area Volume(Area from CADD) CUMULATIVE ELEV AREA VOLUME VOLUME ft sf cf cf 263.5 270 263.50 276 0 0 Btm of Pond 264,00 544 204 204 285.00 1188 866 1070 266.00 1959 1574 2643 266.50 2393 1088 ,3731 WSE 266.5 �j1 C Z/' Z cf. 267.00 2859 1313 5044 Overflow QlG. 267.00 2859 Total: 5044 �~ for WQ volume: 776 cu ft 264.66 elevation ------\\_____ — 2G7.o Q a1u. u''4•Sb Novae 1W-1 tole ex 1.1 7..l13.5 WQ dLph 1.1G ft- 7642/wr/" 4/29/2012 276 ,qit t,tx A ORIFICE DIAMETER WORKSHEET (January, 1996) 'Project Name: TWaluga Reservoir 2(WR2)-Land Use Application computed By: Mike Peebles Date: 04/27/12 Company: Otak,Inc. Address: 17355 S.W.Boones Ferry Road,Lake Oswego,OR 97035 Phone Numbers: '503-635-3618 • Outlet Structure Identification: WQ-Ext Dry Pond Calculate the outlet orifice size. Orifice Equation: Q=CA(2gh)0.5 C= 0.62 Coefficient of Discharge g= 32.20 Accel.of Gravity(ft./sec./see.) h= 1.36 feet (Height above overflow elevation to i.e.out) Q= 0.0045 cfs (Design Discharge) 264.66 WQ WSE 263.30 orifice elevation/invert elevation out Orifice Area: A= 0.000774 sq.ft. A=Q/C(2gh)0.5 A=pi*R2 R= 0.016 feet R=(A/pi)0.5 Pi=3.14159 D= 0.031 feet Orifice Diameter: D= 0.38 inches V-e_ 11 v,%{ 4► INK OYlriu R. 277 IsoiltildsY A ORIFICE DIAMETER WORKSHEET (January, 1996) Project Name: Waluga Reservoir 2(WR2)-Land Use Application Computed By: Mike Peebles Date: 04/27/12 Company: Otak,inc. Address: 17355 S.W.Boons Ferry Road,Lake Oswego,OR 97035 Phone Numbers: 503-635-3611 Outlet Structure Identification: Detention Calculate the outlet orifice size. Orifice Equation: Q=CA(2gh)0.5 C= 0.62 Coefficient of Discharge g= 32.20 Aced.of Gravity(ft./sec./see.) h= 1.$4 feet (Height above overflow elevation to i.e.out) Q= 0.51 cfs (Design Discharge) 266.50 overflow elevation 264.66 orifice elevation Orifice Area: A= 0.076111 sq.ft. A=Q/C(2gh)0.5 A=pi*R2 R W 0.156 feet R=(A/pi)0.5 Pi 3.14159 D= 0.311 feet Orifice Diameter: D= 3.74 inches 278 Aoplu A • 6' MIN. WIDTH AT - VARIES VARIES VARIES 4' MIN. MANHOLE WIDTH CO TOP OF BERM 0 EMERGENCY OVERFLOW 0 MANHOLE SPILLWAY RIM D DETENTION -STOOP INTERIOR WATER / SIDE SURFACE BERM SLOPE STANDING INTERIOR SIDE -100 01- 6" MIN, TOP WATER SLOPE ' n ��� � r® .1111111111,... 4:1 x [SOIL. SEE SURFACE 0, _ f N 4 61q NOTE 2. b.1 !AM1 =I= ?i 12" MIN. • {� '•• ••_!i ^� / I , p x ��•• I I - _ 6" tAtN. TOP SOIL °! ,• II= S 0.02N MIN. NND SEE NOTE 2. ill O OUTLET DEBRIS CONTROL n DITCH INLET STRUCTURE. �NF IP 1� • IP V POND OUTLET PIPE SEE CITY STD. DTLS. 9-6.01A AND B-6.01C. MII"•u• . . - ' : • i ELEVATION DATA 4II= I1- 4P 4P L J MANHOLE RIM EL.= 2.25' MIN. ABOVE 0 MANHOLE I.E. IN,EL.= FLOW CONTROL MANHOLE, SEE B TOP OF BERM EL- CITY STD. DTL B-1.08 MANHOLE LE. OUT EL= all ..-12" MIN. OEMERGENCY OVERFLOW EL.= —2' MIN. 0ORIFICE PLATE EL= al--12" MIN. NOTES: 0 PRIMARY OVERFLOW EL= ; O MANHOLE BOTTOM EL= "2 MIN. 1. MANHOLE BACKFILL: GRADE TO RIM EL. TO O OUTLET DEBRIS CONTROL COVER TOP SLAB OF MANHOLE, GRADE FILL DITCH INLET STRUCTURE 3' MAX. TO BLEND WITH SURROUNDING FINISHED CONTOURS. UP EL= 2. REFER TO CITY SWM DESIGN MANUAL FOR POND •-6" MIN. DESIGN CRITERIA & CONSTRUCTION SPECIFICATIONS. O POND BOTTOM EL= - „of , OPOND OUTLET PIPE I.F.= ' ! "�'D"' 1. ati?a CITY of LAKE OKWEco DETENTION POND atxr I MOM rr: a W ErtGINEER]HC D ARlkEHf SURFACE WATER MANAGEMENT (TYPICAL CROSS-SECTION) m I ax i a mime.a Cr ribmaa _ er 1 El aim 1 ro.I mums n: aa®FM PI ,. \ ` true Ws nvc+-oz r rac nnaNAM.m=.ere SW4-003 e. . CD 1 WATERTIGHT MANHOLE FRAME AND COVER UNLESS OTHERWISE SPECIFIED. 24" MAX. TO SEE DETAIL DWG. NO. 9-2.03. FIRST STEP ! /111141111116111113 'r"ar� tTel P -TOP SLAB AND MANHOLE RINGS SHALL �4�� 1113 CONFORM TO ASTM SPEC. 478 i 21 MAXIMUM / .L • • N • '° • N• . L .' 1'1 . b • 9• C y li N r I rin A SET ETEOOVERFLOW DELEVATION RATOOPROVIDE i . ELBOW LIFT HANDLE (SEE.DWG. L OVERFLOW EL= B-I PIPE SUPPORT 3" X 0.080" ALUMINUM o • OR 3" X 0.079" STEEL. (SEE NOTE 1 do STEPS OR '.,a • DWG. 8-1.088). LADDER ` I r�_� N 1- GROUT . L GROUT SHEAR GATE j II* MIN.DIA, • ' INLET OUTLET i • GROUT- " & a • [_ 1 • 30" MIN. GROUT 'b • I — -5" I `� I' --T 3" MIK, 3�� • INVERT EL= •• N L _ i RESTRICTOR/SEPARATOR, A SIZE AS REQUIRED 4'-0" MIN. LI I L WITHRLATE ORIFICE 4j b DWG. TE 6 lc B(SEE n BB)• IB" iv DIA. = I I P NOTES: • ,,• • �.. o• LI .• a - L �r• 1. ALL PRECAST SECTIONS SHALL CONFROM la - , I • a . (� TO THE REQUIREMENTS OF A ASTM-C-478. ✓� • •)j • �1• ' fl - ALL. POURED IN PLACE CONCRETE SHALL 1 41 HAVE A 28 AND 2- TO 4DA SL STRENGTH OF 3,000 P.S.I. 2. ELEVATIONS DF BASE, LE., AND OVERFLOW 3"— SECTION A —3" SHALL BE APPROVED BY CITY. 5" 3. SEE CITY STD. DTL. B-1.088 FOR ELBOW. LIFT HANDLE, SHEAR GATE DETAILS do NOTES. PRECAST MANHOLE RING MANHOLE ACCESS FROM ABOVE , 9;e"°� e A.L e .e IV 4,5- -' .e'nW GROUT !NUT PIPE :•. '' .` F •Vat.l OUTLET PIPE L' �1 „rt;- A \AXCE i; • GROUT E PLAN DESIGN: DRAWN: I CHECK: ENGINEERING AH °B ' AN �,, , POLLUTION/FLOW - SCALE: DATE: DEPARTMENT CONTROL MANHOLE _ H'T'S' 5-6`D3 ir CITY OF LAKE OSWEGO 'HEFT DRAWING NO. OF BRA 1 .08A 280 AVpav li A Appendix B — Reservoir Overflow and Drain Pipe Sizing • Overflow/Drain Calculations • Pond Volume Worksheet Orifice Design (Overflow) 281 8/8/2012 Overflow and Drain Rates Project Name: Waluga Reservoir 2(WR2)-Land Use Ap lication Date: 8/8/2012 Computed By: Mike Peebles Company: Otak,Inc Address: I 7355 SW Boones Ferry Road,Lake Oswego,OR 97035 Phone Numbers: 503-635-3618 Overflow: Rate: 30,000,000 gal/day 46.4 cfs Assume overflow occurs fir: 5 min 0,08 hours Volume: 13,926 cu ft Outflow from pond during overflow: 3,000 cu ft 10 cfs Overflow storage needed: 10,926 cu ft Drain: Drain the emergency storage volume(storage below 322.3)within 3 days 322.3 ft storage 301.5 ft bottom of tank 20.80 ft 130 ft diameter tank 13,273 ct/f1 276.083 cu ft Time to drain: 2 days Volume: 172,800 sec Rate: 1.6 cfs Design overflow/drain conveyance system for: 1.6 cfs Appendix B 282 Overflow-Drain POND VOLUME WORKSHEET Project Name: Waluga Reservoir 2(WR2)-Land Use Application Pond: Overflow from Tank-Detention Computed By: Mike Peebles Date: 8/8/2012 Company. Otak Method 1 V= H/6(AB+AT+4A0) Pond Volume Elevation where LB= 43 feet 289.00 feet AB= LB X WB Bottom Area WB= 39.5 feet AT LT X WT Top Area LT= 72 feet 293.00 reel AO= (LB+LT/2)X(WB+WT/2) Average Area WT= 60 feet H= Pond Depth H= 4.00 feet Length Side Slopes= 4&2 : 1 Width Side Slopes= 2 : AB= LB X WB = 1,699 sq. II. AT= LT X WT= 4,320 sq. ft. (LB+LT/2)= 58 sq. I!. (WB+WT/2)= 50 sq. ft. AO= (LB+LT/2)X(WB+WT/2)= 2,861 sq.ft. V= 11,641 cu. ft. Method 2 V= H/2(AB+AT) Pond Volume where LB= 43 feet AB= LB X WB Bottom Area WB= 39.5 feet AT— Li X WT Top Area LT= 72 feet H= Pond Depth WT= 60 feet 1-1= 4 feet AB= LB X WB = 1,699 sq.ft. AT= LT X WT= 4,320 sq.ft. V= 12,037 cu.ft. Method 3 V= 1/3H(AB+AT+(AB*AT)0.5) V= 11,636 cu. ft. Method 4- End Area Volume(Area from CALM)) CUMULATIVE ELEV AREA VOLUME VOLUME ft sf cf cf 289 1913 289.00 1913 0 0 Btm of Pond 290.00 2348 2131 2131 291.00 2820 2884 4715 292.00 3327 3074 7788 293.00 3870 3599 11387 Top of Pond 293.00 3870 Total: 11,387 [Average Pond Volume(4 methods): V= 11,675 Appendix B 7642/wr/A 8/8/2012 283 25p{h�ear storm-Conve ance site runoy± Overflow-conve :nee in •i assume 10 cfs max 13%Mo.. GRAVITY RIPE FLOW tC1Ye7y-blInnirr0 Omit- proleetIt16234E 6 btak K 't r►� p affect WR2 LOTWP „, 1 Notes Conveyance Chanel _ Notes; 50 C.1 1 fY1 /f _ liilsj 1 felt slope( ) vertical ®vrticmel bi(in) •_Fry)) O max ',• depth ,. 0 bottom width (it) ®slope(G),; RIB I 93 82 depth(✓ofden) 5D right xtnt`r,[U) verlicat material i ®channel slope(1-) 0.013 'Martt)tng s"'ri" 3.80 flow(cfs) cobble bo#tom,clean sides wetted perimeter - 2.64' channel hydraulic radius = 0.29' 0.040 Manning's "n" area = 0.77 a.f. velocity = 18.10 fps depth - o.5S' flow 13.85 cfs velocity = 5.50 fps area = 0.69 sq ft 05C I Z PIPE surface eittth = 2.35P h I—Li " 17o S(o G. ( I Overflow-conve ante in pipe(assume 10 cfs max).1%slope 2- 'tty` u‘cti1N CV Allot)) GRAVITY PIPE FLOW (t hezv Manning) t 2,7. s[ c (hipte2.1) ..a ._ - Nntrs 1B du inlet cr'tinj L C/l ?rE st1433' ---_ 1 • tell 0 roar #-depth }; slr5trr.(%) RIB 93.112 ','depth( t•tirn) material 0.013 vetted perimeter = 3.96' hydraulic radius = 0.43' area = 1.72 e.f. velocity T 5.58 fps flow = 11.33 ce uSE IS PIPE ru2,r Appendix B 284 Appendix C — Operations and Maintenance • Preliminary O&M Guidelines 285 286 WATER QUALITY TREATMENT PONDS OPERATIONS AND MAINTENANCE PLAN m r _ °'� " + Description: A Water Quality Treatment Pond is a facility that contains a permanent pool of water and supports a dense,finely divided growth of native wetland vegetation. Variations in design include,extended detention ponds,extended wet ponds, . and other types of wetland type pond • facilities. They are created to mimic the } appearance of natural wetland features. Purpose: The purposes of a Water Quality Treatment Pond are to: ❑ Trap and filter pollutants carried by surface water runoff. ra Slow the rate of surface water runoff. ❑ Reduce the quantity of runoff by increasing infiltration and evapotranspiration. ❑ Create the aesthetic appearance of a natural drainage feature. ❑ Create habitat for wildlife. o Satisfy Federal, State, and local regulations requiring treatment of surface water runoff. Operation and Maintenance Activities: The owner of a Water Quality Treatment Pond shall perform the following operation and maintenance tasks as stated in this plan. For assistance with your O&M Plan, please contact Jamey Berg at(503) 675-3991 or via email at jberg@ci.oswego.or.us. inspections: Inspect facilities to assure proper operation and maintenance during: ❑ Spring(March), ❑ FalI (October), and ❑ Within 48 hours after each major storm event, ❑ Specific inspection items are listed below. Signs: The City will provide signs for your facilities. Property owners shall: ❑ Inspect signs for proper location, good condition,and legibility. ❑ Install, replace, and maintain signs to assure they are in the proper location and in good condition. Information: Education about these facilities promotes proper maintenance. ❑ Provide a copy of this 0& M Plan to all property owners,tenants,and maintenance personnel. Reporting: ❑ Fill out and return the maintenance reporting form mailed out to property owners annually. 2003 City of Lake Oswego Surface Water Management Manual Page 1 of 2 ?87 Aiv ' WATER QUALITY TREATMENT PONDS OPERATIONS AND MAINTENANCE PLAN Access. Access paths and roads provide safe and efficient access to WQTF components. ❑ Remove obstacles to provide clear access. ❑ Maintain access routes to provide a safe all-weather surface. Trash and Debris. Look for trash and debris in the pond and at the pond outlets, or inlets ❑ Remove this material regularly. Erosion. Surface water runoff may cause erosion of the pond side slopes or pond inlets. ❑ Inspect the pond side slopes and inlets for evidence of erosion. ❑ Grade eroded areas (during the late summer)to restore the original grading contours. ❑ Stabilize eroded areas with approved vegetation and other appropriate erosion prevention measures. Sediment Accumulation. A pond will tend to collect sediment over time. ❑ Remove sediment when deposits are visible at or above the water surface. Restore the original design depth of the pond. ❑ Remove sediment by hand using care to minimize damage to vegetation and restore the original smooth grading contour. Please contact the City at the number provided,prior to sediment removal. Flow Control Devices. These devices control the storage of water in the pond. The device is typically an orifice, weir, or other structure that is inside a manhole or outlet structure. a Inspect flow control devices for accumulation of sediment and debris. ❑ Remove sediment or debris that may interfere with the flow of water. Vegetation. Vegetation shall be healthy,dense,finely divided native plants that provide filtering of runoff and protection against soil erosion. A native plant list is available in the City's SWM Design Manual. ❑ Vegetation may be cut to maintain a natural aesthetic appearance. Remove cuttings from the facility after any maintenance activity. ❑ Plant bare areas immediately with plants approved by the City's SWM Design Manual. ❑ Water vegetation regularly during the establishment period and as needed in dry weather to maintain vigorous growth. ▪ Remove non-native vegetation(such as blackberries and English ivy)by hand methods. Do not use herbicides. ❑ Remove fallen leaves,dead plant materials, and organic debris. Fertilizer,Herbicides, and Insecticides. Fertilizers, herbicides,and pesticides get flushed away and cause pollution of streams. These materials have a direct harmful impact on fish,macro-invertebrate organisms, and other users of our surface water runoff. ❑ Do not use fertilizer,herbicides, or insecticides in or adjacent to the pond. Embankments. Embankments are berms, dikes,or side slopes that retain water in the pond. ❑ Inspect embankments for signs of erosion cracks,or holes from rodents. ❑ Report areas of concern to City Engineering Staff at(503) 675-3991. 2003 City of Lake Oswego Surface Water Management Manual Page 2 of 2 2881 Y C VEGETATED FILTER STRIP OPERATIONS AND MAINTENANCE PLAN r _' • :- Description: A Vegetated Filter Strip f � �~ is a Water Quality Treatment Facility consisting of a broad low-gradient `` channel that supports a dense growth -. of finely divided native non-woody ground cover vegetation. They are typically created to treat parking lot runoff by simulating the function of • r natural wetland features. Purpose: The purposes of a Vegetated Filter Strip are to: ❑ Trap and filter pollutants carried by surface water runoff a Slow the rate of surface water runoff. ❑ Reduce the quantity of runoff by increasing infiltration and evapotranspiration. ❑ Create the aesthetic appearance of a natural drainage feature. a Create habitat for wildlife. ❑ Satisfy Federal, State, and local regulations requiring treatment of surface water runoff. Operation and Maintenance Activities: The owner of the Vegetated Filter Strip shall perform the following operation and maintenance tasks as stated in this plan. For assistance with your O&M Plan please contact Jamey Berg at(503) 675-3991 or via email at iberg@ci.oswego.or.us. Inspections: Inspect facilities to assure proper operation and maintenance during: a Spring(March), ❑ Fall (October), and ❑ Within 48 hours after each major storm event. a Specific inspection items are listed below. Signs: The City will provide signs for your facilities. Property owners shall: a Inspect signs for proper location, good condition, and legibility. ❑ Install, replace, and maintain signs to assure they are in the proper location and in good condition. Information: Education about these facilities promotes proper maintenance. ❑ Provide a copy of this 0 &M Plan to all property owners, tenants, and maintenance personnel. Reporting: ❑ Fill out and return the maintenance reporting form mailed out to property owners annually. 2003 City of Lake Oswego Surface Water Management Manual Page 1 of 2 289 VEGETATED FILTER STRIP OPERATIONS AND MAINTENANCE PLAN Access: Access paths and roads provide safe and efficient maintenance access to WQTF components. ❑ Remove obstacles to provide clear access. © Maintain access routes in a condition to provide a safe all-weather surface. Trash and Debris: Look for trash and debris in the Vegetated Filter Strip. ❑ Remove this material regularly. Erosion: Surface water runoff may cause erosion of the Vegetated Filter Strip. ❑ Inspect the swale bottom, side slopes, and inlets for evidence of erosion. ❑ Grade eroded areas to restore the original grading contours. ❑ Stabilize eroded areas with approved vegetation and other appropriate erosion prevention measures. Sediment Accumulation: Vegetated Filter Strips will tend to collect sediment over time. ❑ Inspect the Vegetated Filter Strip for excessive accumulation of sediment. u Remove sediment as needed to maintain even flow across the Vegetated Filter Strip. ❑ Remove sediment by hand using care to minimize damage to vegetation and restore the original grading. Please contact the City at the number provided,prior to sediment removal. Vegetation: Vegetation shall be healthy, dense, finely divided native plants that provide filtering of runoff and protection of soil from erosion. A native plant list is available in the City's SWM Design Manual. ❑ Vegetation may be cut to maintain a natural aesthetic appearance. Remove cuttings from the facility after any maintenance activity. ❑ Plant bare areas immediately with plants approved by the City's SWM Design Manual. ❑ Water vegetation regularly during the establishment period and as needed in dry weather to maintain vigorous growth. ❑ Remove non-native vegetation(such as blackberries and English ivy)by hand methods. Do not use herbicides. ❑ Remove woody plants from the Vegetated Filter Strip area. ❑ Remove or maintain adjacent vegetation that shades the Vegetated Filter Strip to facilitate growth of vegetative ground cover in the facility ❑ Remove fallen leaves,dead plant materials,and organic debris. Fertilizer,Herbicides, and Insecticides: Fertilizers,herbicides,and pesticides get flushed away and cause pollution of streams. These materials have a direct harmful impact on fish, macro-invertebrate organisms,and other users of our surface water runoff. ❑ Do not use fertilizer,herbicides,or insecticides in this facility or on adjacent areas draining to it. 2003 City of Lake Oswego Surface Water Management Manual Page 2 of 2 290 A1,01,4dot POLLUTION CONTROL MANHOLE, TRAPPED CATCH BASIN, AND DETENTION TANK OPERATIONS AND MAINTENANCE PLAN - r• _ Description: Pollution Control A Manholes and Catch Basins are structures with baffle devices and s - Y sumps to prevent oils, fuels, w grease,and sediment from - - reaching our rivers and lakes. r-R gggERE • Purpose: The purposes of Pollution Control Manholes and Catch Basins are to: ❑ Separate and trap oils (and other floating materials)and heavier sediments. ❑ Satisfy Federal, State, and local regulations requiring treatment of surface water runoff. Operation and Maintenance Activities: The owner of the Pollution Control Manholes and Catch Basins shall perform the following operation and maintenance tasks as stated in this plan. For assistance with your O&M Plan,please contact Jamey Berg at(503)675-3991 or via email at iberg@ci.oswego.or.us. inspections: Inspect facilities to assure proper operation and maintenance during: ❑ Spring(March), ❑ Fall (October), and ❑ As needed to assure proper function. ❑ Specific inspection items are listed below. information: Education about these facilities promotes proper maintenance. ❑ Provide a copy of this 0 &M Plan to all property owners,tenants, and maintenance personnel. Reporting: ❑ Fill out and return the maintenance reporting form mailed out to property owners annually_ Access: Access paths and roads provide safe and efficient maintenance to WQTF components. ❑ Remove obstacles to provide clear access. ❑ Maintain access routes in a condition to provide a safe all-weather surface. 2003 City of Lake Oswego Surface Water Management Manual Page 1 of 2 291 POLLUTION CONTROL MANHOLE, TRAPPED CATCH BASIN, AND DETENTION TANK OPERATIONS AND MAINTENANCE PLAN Inlet Grates: Grates will collect sediment and debris that could affect proper performance. • Inspect inlet grates for accumulated sediment and debris. ❑ Remove debris and accumulated sediment. Outlet: The facility outlet is typically a storm drain line that collects runoff and conveys it to the downstream drainage system. • Inspect the outlet for accumulated sediment and debris. ❑ Remove all debris and accumulated sediment. Sediment Accumulation: Detention tanks and sumps tend to collect sediment over time. • Inspect for accumulation of sediment. o Remove all sediment and debris when the accumulation exceeds one-third of the sump depth from the bottom of the sump to the invert of the lowest pipe in the structure (*See Figure 1). Any sediment detected in detention tanks should be removed immediately to insure proper functioning of the tank, o Sediments may contain hazardous materials,heavy metals, or other pollutants. Properly dispose of collected sediment according to all local, State,and Federal regulations. Oils,Fuel,and Grease: • Catch basins designed to retain water in order to trap floatable pollutants must be serviced annually at a minimum. r� Remove any collected oils,fuel, and grease and properly dispose of these materials according to all local, State, and Federal regulations. Figure 1. Typical Pollution Control Catch Basin Cross Section GRATE .A . ° STREET CURB IV 4.A. e� • Catch Basin Cleaning Vendor List a•ae e Metro Rooter (503) 643-7215 _ •• Spencer Environmental (503) 788-4612 L ° River City I A.A ° FLOATABLE I a ' • ° A POLLUTANTS Environmental (503)252-6144 I - °�• ° (OILS'GREASE FUEI ° ETC.) American Sweeping a 3 Service (503) 221-1825 a;°%All Vac (503) 289-4063 INVERT ;.° • A Water Truck Services (503) 682-2723 a o' STORM o$ A '- WATER ° '• . A . a- a• A • • A SEDIMENT A A a !/,// eAA A .A A. A . A A A 2003 City of Lake Oswego Surface Water Management Manual Page 2 of 2 292 �, r x I✓ WATER QUALITY TREATMENT FACILITY OPERATIONS & MAINTENANCE AGREEMENT REQUIRED IN ACCORDANCE WITH CITY LO C CHAPTER 50.00 •CitpuLaiid=Use Applicatiori:lv::..: • Development Name: Site Address: Owner's Name: Organization: Mailing Address: E-Mail Address: Phone: Party Responsible for Maintenance(only if other than owner). Contact Name: f Title: Organization: Daytime Phone: After-Hours Phone: Mailing Address: Treatment Facility Types No.bf.Faciliiies Identification Number • Requirement to Maintain Treatment Facilities. The City Land Use Development Permit for this development requires the owner to operate and maintain each water quality treatment facility identified above in accordance with the Operation &Maintenance Plans(O&M)approved by the City Engineering Division. This requirement is binding on all current and future owners of the property. New contact information shall be furnished to the City Engineering Department with each transfer of ownership,as dictated by conditions of approval for this development. Operation &Maintenance Plans. The O&M plan for each facility is available at the City of Lake Oswego, Engineering Division, 380 A Avenue,Oregon,between the hours of 8:00 a.m.and 5:00 p.m.,Monday through Friday. 1 O&M Plan Modifications. An O&M plan may be modified to address site-specific conditions or to enhance treatment facility performance. The City Engineering Division must approve O&M plan modifications in writing. • Facility Site Plans. Site plans for each facility may be available at the City of Lake Oswego,Engineering Division Site plans show facility locations(in relation to building structures or other perti'tanent monuments on the site),sources of runoff entering each facility,and where surface water will be discharged after leaving each facility, City Assistance: Jamey Berg is available at(503)675-3991 to provide technical assistance concerning water quality treatment facilities, BY SIGNING BELOW,owner accepts and agrees to the terms and conditions contained in the operations& , maintenance plans and in any document executed by owner associated with it. Owner's Signature: Date: 3 -rP /V 294 G P._ 9725 SW Baverton-Hilldale Hwy.Suite 140 Beaverton.OR 97005-33G4 p1503-641-3478 tl503-644-13034 May 31, 2012 5262-C GEOTECHNICAL RPT Black &Veatch 5885 Meadows Road, Suite 700 DRAFT Lake Oswego, OR 97035 Attention: Sean D. Goris, PE SUBJECT: Geotechnical Report Waluga Reservoir No. 2 Lake Oswego,Oregon At your request, GRI is providing geotechnical engineering services for the proposed Waluga Reservoir No. 2 in Lake Oswego, Oregon. The Vicinity Map, Figure 1, shows the proposed location of the reservoir (tank), which is located northwest of the existing reservoir on this site. Our geotechnical services for this task included a review of existing information for the project, field explorations, and engineering analyses. This report describes the work accomplished and provides our conclusions and recommendations for design and construction of the reservoir and associated improvements. PROJECT DESCRIPTION The addition of Waluga Reservoir No. 2 is one element of the Lake Oswego-Tigard Water Partnership — Package 3 project. The new reservoir will be constructed in a wooded area northwest of the existing Waluga Reservoir located between SW Parkhill Street and Carman Drive in Lake Oswego,as shown on the Site Plan, Figure 2. As presently envisioned, the new reservoir will have a capacity of 3.5MG with a finish floor elevation of 302.2 ft, which matches the existing reservoir on the site. The new reservoir will have an outside diameter of 119.2 ft and be constructed of prestressed concrete, similar to the existing reservoir on the site. In addition, the new reservoir will have a dome roof, which eliminates the need for interior columns. GRI is the geotechnical subconsultant for the project to Black &Veatch (B&V), the prime design consultant. Additional subconsultants to the B&V team include R2 Resource Consultants, Inc. (R2) and OBEC Consulting Engineers (OBEC). To support preliminary design by the project's Program Sponsors, GeoDesign provided geotechnical engineering services in March 2011 that included subsurface explorations, laboratory testing, engineering studies, and recommendations for design and construction of the project. The reports prepared by GeoDesign for the project are listed below; the geotechnical report is attached. "Report of Geotechnical Engineering Services, Proposed Waluga Reservoir, Lake Oswego, Oregon," dated March 22, 2011, prepared by GeoDesign for Brown and Caldwell. Providing geotechnical and environmental consulting services since 1984 295 "Geotechnical Data Report, Seismic Hazard Assessment, City of Lake Oswego and Tigard Joint Water Supply System, Clackamas County, Oregon," dated March 11, 2011, prepared by GeoDesign for Brown and Caldwell. Our scope of work included reviewing the geotechnical recommendations provided in the above- referenced GeoDesign reports, and completing four tests pits along a new storm sewer alignment that extends from the new reservoir to Carman Drive. In addition, one test pit was completed in the northern area of the new reservoir and one test pit was completed in the access road off SW Parkhill Street adjacent to the existing reservoir on the site. The primary purpose of these test pits was to evaluate the depth to the relatively hard rock that underlies the site at relatively shallow depths. SITE DESCRIPTION The proposed reservoir site is located in an undeveloped wooded area. The existing ground surface is relatively flat across the majority of the reservoir footprint and ranges from about elevation 300 to 302 ft. However, along a small area at the northern portion of the reservoir, the existing ground surface drops off from about elevation 300 to 296 ft, as shown on Figure 2. Figure 2 shows the location of the new storm sewer that will extend from the new overflow detention pond located east of the new reservoir and tie into the existing storm sewer at Carman Drive. The storm sewer alignment generally follows the existing gravel-paved driveway that serves the existing residences on the property. We understand these residences have been purchased by the City of Lake Oswego and will be demolished in conjunction with construction of the reservoir. Based on our observations, it appears some site grading has been accomplished in the northern area of the new reservoir. Some of this site grading may have been accomplished in conjunction with construction of the nearby homes and driveways. In addition, basalt boulders and cobbles currently exposed at the ground surface in and around the area of the new reservoir were likely encountered when the site grading was accomplished. Geology The near-surface geologic unit at this site is mapped as Boring Lava, which consist of localized basalt lava flows and flow breccias (Beeson, et al., 1989). The boring lava includes a variety of materials consisting of highly vesicular and dense basalt flows, basalt flow breccias, and tuff. The thickness of the Boring Lava flows is estimated to be 150 ft in this area. The Boring Lava typically weathers to clay with cobbles and large boulders. As discussed in GeoDesign's March 2011 geotechnical report for this project, "a volcanic vent is mapped northwest of the existing water reservoir and may be within the site boundary(Beeson, et al. 1989, Madin, 1990). Vent materials can be highly variable, ranging from dense lava flows and tuff to decomposed volcanic flows and hydrothermally altered bedrock units." A more detailed discussion of the geology at this site is included in the attached GeoDesign report for this project. FIELD EXPLORATIONS AND LABORATORY TESTING The subsurface materials and conditions at the site were evaluated by GRI with six test pits on May 8, 2012, to supplement the borings completed at this site by GeoDesign. The approximate locations of the GRD 2 296 GRI test pits and GeoDesign borings are shown on Figure 2. Al! explorations were observed by an experienced geotechnical engineer from GRI. As noted above,the primary purpose of these test pits was to evaluate the depth to the relatively hard rock that underlies the site at relatively shallow depths. The test pits were excavated to depths of 2 to7 ft, using a John Deere 310E rubber-tired backhoe provided and operated by Dan J. Fisher Excavating, Inc. of Forest Grove, Oregon. An experienced geotechnical engineer from GRI directed the test pit operation and maintained detailed logs of the materials and conditions disclosed during the course of the work. Representative soil samples were obtained from the sidewalls of the excavations. The samples were examined and classified, and representative portions were saved in airtight jars. All samples were returned to our laboratory for further examination and testing. Each of the test pit excavations was backfilled with the excavated materials, and the backfill was graded to match the adjacent ground surface. Minimal compactive effort was applied to the backfiII. Detailed logs of test pits TP-1 through TP-6 are provided on Figures 3 and 4. Each log presents a descriptive summary of the various types of material encountered in the excavations and notes the depths where the materials and/or characteristics of the materials change and where the samples were taken. The terms used to describe the soils encountered in the test pits are defined in Tables 1 and 2. The samples obtained from the test pits were examined in our laboratory where the physical characteristics of the samples were noted, and the field classifications were modified where necessary. At the time of classification, the natural moisture content of each sample was determined. The natural moisture content determinations were made in general conformance with ASTM D 2216. The results are summarized on Figures 3 and 4. SUBSURFACE CONDITIONS Subsurface materials and conditions at the site were evaluated through a review of existing subsurface information prepared by GeoDesign and supplemental test pit explorations and reconnaissance completed by GRI. Figure 2 shows the approximate locations of the GeoDesign borings, designated B-1 through B-11, and the GRI test pits, designated TP-1 through TP-6. The terms used to describe the soil and rock encountered in the borings and tests pits are defined in Tables 1 and 2. Subsurface conditions at this site are summarized below. A more thorough discussion of the subsurface conditions can be found in the attached GeoDesign report. In general, the site is mantled with up to 1 ft of topsoil that consists of medium stiff silt with a variable clay content ranging from some clay to clayey, and abundant fine roots. In some areas, these materials have been stripped and gravel fill materials are present. These near-surface materials are typically underlain by extremely soft to soft, brown to gray basalt, subangular to angular, cobble-and boulder-size rock fragments in a matrix of silt with varying amounts of clay. The GeoDesign borings indicate the thickness of this unit varies widely across the new reservoir footprint, from about 2.5 to 5.8 ft. The GRI test pits completed in the area of the new storm sewer indicate the thickness of the angular basalt unit_ ranges from about 2 ft near the new reservoir site to about 6 ft near the intersection with Carman Drive. The John Deere 310E rubber-tired backhoe, equipped with a 2-ft-wide bucket and carbide teeth, was able to excavate these materials; however, occasional boulder-size rock fragments were encountered, which made excavation difficult for this size of equipment. mll 3 297 In the borings made by GeoDesign in the area of the new reservoir, medium hard to very hard (R3 to R5) basalt was typically encountered at depths ranging from about 2.5 to 5.8 ft (about elevation 296 to 299.5 ft). However, in GeoDesign boring B-3 completed east of the new reservoir location, the basalt was classified as very soft to soft(R1 to R2) from about elevation 291.5 to 276,the bottom of the boring. In GRI test pits TP-1 and TP-2, located near the footprint of the new reservoir,the backhoe met refusal on medium hard (R3) basalt at depths of about 2 to 4 ft(about elevation 291 to 293 ft). in the GeoDesign borings made in the footprint of the new reservoir,the Rock Quality Designation (RQD)typically ranges from about 22 to 88% in the medium hard to hard (R3 to R4) basalt, indicating the rock quality is poor to good. However, in GeoDesign borings B-3 and B-5 located east and west of the new reservoir footprint,very soft to soft (R1 to R2) basalt was encountered at elevations 291.5 and 297 ft, respectively. RQD values in the very soft to soft (R1 to R2) basalt typically range from 8 to 28%, indicating the rock quality is very poor to poor. Unconfined compression strength testing of the upper portion of the basalt flow encountered in the GeoDesign borings made in the footprint of the new reservoir ranged from 11,670 psi to 16,624 psi. However, one unconfined compression strength test of the soft (R2) basalt in GeoDesign boring B-3 was 2,746 psi, Groundwater was not encountered in any of the test pits completed by GRI. In addition, no groundwater was observed in the borings drilled by GeoDesign. The GeoDesign report indicates the regional water level is mapped between 40 and 60 ft below the existing ground surface in this area. However, as they indicated, and we concur, localized areas of perched water may develop on the top of the basalt flows following periods of prolonged rainfall. CONCLUSIONS AND RECOMMENDATIONS General In our opinion, geotechnical considerations associated with design and construction of the project include the potential for differential settlement across the reservoir footprint due to the thickness of the soil mantling the site and the variable depth to medium hard (R3) basalt across the reservoir footprint, To limit post-construction settlement of the reservoir, it will likely be necessary to overexcavate and replace these soils with compacted crushed rock and/or lean-mix concrete. Additional geotechnical considerations include the moisture-sensitive nature of the near-surface soils and the presence of boulders and large basalt fragments in the overburden materials,which will likely make excavations in these materials difficult. We have reviewed the March 22, 2011,geotechnical report by GeoDesign for this project and concur with the majority of their conclusions and recommendations for design and construction of the reservoir, with the following modifications or clarifications: Foundation Support and Settlement Based on discussions with the project team, we understand the structural loads for the reservoir will likely be supported on a perimeter wall foundation with no interior columns. The reservoir floor will consist of a concrete membrane slab or mat foundation. The perimeter wall will likely be supported on the thickened edge of the slab or on a ring footing. We understand the differential settlement (angular distortion) criterion that OBEC typically uses for a standard 6-in.-thick flexible membrane slab-on-grade floor is 1/300 (ratio of settlement to horizontal distance) from edge of reservoir to center of reservoir and 1/600 around the perimeter of the reservoir. The G Re 4 298 maximum allowable settlement at the center of the reservoir floor is 2 in. To limit differential settlements as much as practical for this type of concrete tank, we recommend excavating all of the existing overburden to the top of the medium hard (R3) basalt and restoring the site grade with compacted crushed rock and/or lean-mix concrete. Provided this overexcavation and replacement is completed, we anticipate the settlement criteria for a membrane slab can be met and a mat foundation will not be needed unless for other structural considerations. The crushed rock base course (CRB) or lean-mix concrete should extend at least 5 ft beyond the limits of the perimeter tank footing. The crushed rock should be compacted as structural fill to at least 95% of the maximum dry density according to ASTM D 1557 (modified Proctor) with a maximum size of 11/2 in. and not more than 5°/0 passing the No. 200 sieve(washed analysis). Spread footings to support the tank walls can be designed using an allowable bearing capacity of 6,000 psf. Wall footings should have a minimum width of 3 ft and be sized for the total of dead load plus frequently and/or permanently applied live loads, and can be increased by one-third for the total of all loads; dead, live, and wind or seismic. The footing should be embedded a minimum of 2 ft below the outside finished grade. We estimate that the settlement of spread footings established in accordance with the above recommendations will be on the order of 1/2 in. or less. To address the effects of actual deformations of the mat slab foundation,we recommend analyzing the mat as a plate on an elastic foundation. To account for short-term loading conditions (undrained condition), such as initial placement of the new loads on the mat, or transient loading conditions such as seismic forces, we recommend a coefficient of subgrade reaction, k, of 250 pci. This value assumes the floor will be underlain by a minimum 3-ft thickness of compacted crushed rock. Lateral loads (seismic, soil, etc.) can be resisted partially or completely by frictional forces developed between the base of mat/slab foundation and underlying crushed rock, The total frictional resistance is the normal force times the coefficient of friction between the crushed rock and the base of the reservoir. We recommend an ultimate value of 0.45 for the coefficient of friction between mass concrete cast directly on angular, granular structural fill. If a synthetic membrane, such as HDPE, is placed between the concrete and the underlying crushed rock, we recommend using an ultimate coefficient of friction of 0.30. If additional lateral resistance is required, passive earth pressures against embedded foundations and the tank walls can be computed on the basis of an equivalent fluid having a unit weight of 225 pcf for limiting lateral deflections to 1/4 to 1/2 in. and 300 pcf for larger deflections. These passive earth pressure values would be applicable only if the backfill for the foundations or walls is placed as compacted structural fill and does not slope down away from the reservoir. Excavation Based on our review of the GeoDesign borings and the GRI test pits within the limits of the new reservoir, excavations on the order of 6 ft deep will be required to remove all of the overburden materials to the surface of the medium hard (R3) basalt. However, as noted, the depth to the hard (R3) basalt can vary widely over relatively short horizontal distances;therefore, it should be anticipated that deeper excavations may be needed locally. Any excavations greater than about 6 ft below foundation or slab depth should be reviewed by GRI, as we anticipate the maximum rock section can be limited in most areas to still meet the settlement criteria. Temporary excavation slopes should be no steeper than about 1 H:1 V, and permanent G NO 5 299 cut and fill slopes should be no steeper than 2H:1V. Temporary excavation slopes should be covered with plastic sheeting to reduce erosion during wet weather. In addition, excavation spoils and construction materials should not be stockpiled within 10 ft of the top of cut slopes. It should be emphasized that these recommendations are intended to reduce the risk of a slope failure to an acceptable level. However, implementation of these recommended cut slopes does not preclude the possibility of loosened material and/or rock fragments moving into the excavation. Excavation to remove the existing overburden materials and weathered basalt to the surface of the medium hard (R3) basalt will encounter fine-grained soils (silt) that contain gravel, cobbles and boulders. In some areas, the upper surface of the basalt is typically severely weathered and decomposed and has the consistency of a stiff to hard soil. We anticipate that most, if not all, of these materials can be excavated with a large, track-mounted excavator equipped with a rock excavation bucket and rock teeth, or by ripping with a single ripper tooth attached to a large bulldozer, such as a CAT D8 or similar type equipment. It should be noted that these overburden materials are highly variable and, although the weathered rock is highly fractured, some of the individual pieces are typically hard, and the basalt can contain zones of more massive, less-fractured hard rock. Alternative methods, such as hydraulic splitters and chippers or pneumatic hammers, may be needed to excavate the rock in these areas. We anticipate these materials can be excavated with conventional excavation equipment, such as a large hydraulic excavator equipped with a rock excavation bucket. However, it should be anticipated that large boulders will be encountered in the excavation and will likely slow progress. Chipping methods may be required to reduce the size of the boulders and facilitate handling. Some excavations into the relatively medium hard to hard (R3 to R4) basalt will be required to achieve the required subgrade elevations for the new storm sewer, detentions ponds, vaults, and associated piping that connects the two reservoirs. We understand blasting will not be allowed for rock removal due to permitting issues and the proximity of the existing reservoir and nearby residences. In our opinion, the limited anticipated rock excavation can be completed using conventional hydraulic splitters and chippers and/or pneumatic hammers. To achieve the required subgrade elevation, the contractor should anticipate that some overbreak will occur, depending on the variation in rock hardness and jointing. These areas will require backing with crushed rock or lean-mix concrete in settlement-sensitive areas, such as excavations below the existing tank foundations to install new piping. However, the contractor should be responsible for independently evaluating the rock characteristics and selecting the appropriate equipment to remove the rock in accordance with the contract documents. Based on our observations at the site and and review of GeoDesign's March 2011 geotechnical report, we anticipate the groundwater level will occur below the bottom of the required excavations. However, localized, perched water may develop within the excavation during the normally wet, winter and spring months. We anticipate that any perched water or seepage, if encountered, can be controlled by pumping from temporary sumps. Subdrainage We anticipate perched groundwater could approach the ground surface and the bottom of the floor slab during periods of prolonged precipitation common from late fall through early spring. To provide drainage G Rp 6 300 due to high groundwater or potential leakage through the floor slab, we recommend installing subdrainage beneath the floor slab of the new reservoir. Based on conversations with OBEC, we understand the subgrade beneath the floor slab of similar reservoirs typically consists of poly sheeting over a 3-in. thickness of well-graded crushed rock over a filter fabric over a 9-in. thickness of open-graded crushed rock (drain rock)over a filter fabric. In our opinion, this is a suitable subdrainage section. In addition to the crushed rock, the drainage system should include a system of rigid 4-in.-diameter (minimum diameter) perforated drainage pipes to convey water from beneath the slab to a stormwater system. The perforated drainage pipes should be designed for the imposed loads from the reservoir or construction traffic, whichever is greater. Drainage pipes for a circular reservoir typically extend radially outward from the center of the reservoir. In this regard, the drain pipes should be placed with a center-to- center spacing of about 40 ft at the perimeter of the reservoir. The 12-in.-thick (total) drainage layer can be considered part of the recommended minimum 3-ft thickness of compacted crushed rock beneath the reservoir. Materials used to construct drainage blankets should consist of open-graded, angular crushed rock with a maximum size of up to 11/2 in., with not more than about 2°/0 passing the No. 200 sieve (washed analysis). Crushed rock of 3f4-to 1-1/2-in. gradation (drain rock) is suitable for this purpose. Seismic Considerations The reservoir is considered an essential facility, and GRI has reviewed the site-specific seismic hazard study report for the project completed by GeoDesign in March 2011. This section provides specific recommendations for design of the reservoir, based on our work and review of GeoDesign's site-specific study. We understand the reservoir will be designed using the American Water Works Association document AWWA D110-04, "Prestressed Concrete Water Tanks," and the 2009 International Building Code (IBC) with 2010 Oregon Structural Specialty Code (OSSC) modifications. Based on the subsurface conditions disclosed by the borings, the site is classified as AWWA Soil Profile Type A,within Seismic Zone Class 3. The IBC design methodology uses two spectral response coefficients, Ss and Si, corresponding to periods of 0.2 and 1.0 second, to develop the design earthquake spectrum on bedrock. The Ss and Si coefficients for the site located at the approximate latitude/longitude coordinates of 45.41° N and 122.72° W are 0.95 and 0.34 g, respectively. Since the reservoir will be founded on rock at vary shallow depths, the bedrock Site Class B spectrum is appropriate for design. The design spectra are based on a damping ratio of 5°I0. To evaluate sloshing at a damping ratio of 0.5%, the design spectrum for Site Class C can be multiplied by a factor of 1.5. Based on site topography, the risk of earthquake-induced slope instability is very low. Based on the elevation and location of the site, the risk of damage by tsunamis, lateral spreading, and/or seiches is absent. In our opinion, the risk of subsidence at the site is very low. Our review of geologic maps and available subsurface information indicates that no faults have been mapped in the immediate area of the site. It is our opinion the potential for fault rupture at the site is very low unless occurring on a previously unmapped fault. Additional discussion of local faults and other seismic considerations is provided in GeoDesign's March 11, 2011, report. G RO 7 301 Design Review and Construction-Phase Services We welcome the opportunity to review and discuss construction plans and specifications for this project as they are being developed. In addition, GRI should be retained to review all geotechnical-related portions of the plans and specifications to evaluate whether they are in conformance with the recommendations provided in our report. In addition,to observe compliance with the intent of our recommendations, design concepts, and the plans and specifications, we are of the opinion that all subgrade conditions should be observed by a GRI representative. Our construction-phase services will allow for timely design changes if site conditions are encountered that are different from those described in this report. If we do not have the opportunity to confirm our interpretations, assumptions, and analyses during construction, we cannot be responsible for the application of our recommendations to subsurface conditions that are different from those described in this report. LIMITATIONS This report has been prepared to aid the project team in design of the Waluga Reservoir No. 2 project. The scope is limited to the specific project and location described herein, and our description of the project represents our understanding of the significant aspects of the project relevant to the new reservoir construction on this site. In the event that any changes in the design and location of the reservoir as outlined in this memorandum are planned,we should be given the opportunity to review the changes and to modify or reaffirm the conclusions and recommendations of this report in writing. The recommendations submitted in this report are based in part on the subsurface information developed by GeoDesign. With respect to the work performed by others, we did not participate in the implementation of the work. We make no representations or warranty regarding instruments of service completed by others. Please contact the undersigned if you have any questions or comments. Submitted for GRI, Scott M. Schlechter, PE, GE H. Stanley Kelsay, PE,GE Associate Principal Consultant V 8 302 Table 1 GUIDELINES FOR CLASSIFICATION OF SOIL Description of Relative Density for Granular Soil Standard Penetration Resistance Relative Density (N-values)blows per foot very loose 0-4 loose 4- 10 medium dense 10-30 dense 30- 50 very dense over 50 Description of Consistency for Fine-Grained(Cohesive)Soils Standard Penetration Torvane or Resistance(N-values) Undrained Shear Consistency blows per foot - Strength,tsf very soft 0-2 less than 0.125 soft 2-4 0.125-0.25 medium stiff 4-8 0.25-0.50 stiff 8- 15 0.50- 1.0 very stiff 15- 30 1.0-2.0 hard over 30 over 2.0 Sandy silt materials which exhibit general properties of granular soils are given relative density description. Grain-Size Classification Modifier for Subclassification Boulders Percentage of 12-36 in. Other Material Adjective In Total Sample Cobbles 3 - 12 in. clean 0-2 Crave! trace 2 - 10 1/4-3/4 in. (fine) 3/4-3 in. (coarse) some 10-30 Sand sandy, silty, 30-50 No. 200-No.40 sieve(fine) clayey, etc. No. 40- No. 10 sieve (medium) No. 10- No. 4 sieve(coarse) Silt/Clay-pass No. 200 sieve GRD 303 Table 2 GUIDELINES FOR CLASSIFICATION OF ROCK RELATIVE ROCK WEATHERING SCALE: Term Field Identification Fresh Crystals are bright. Discontinuities may show some minor surface staining. No discoloration in rock fabric. Slightly Rock mass is generally fresh. Discontinuities are stained and may contain clay. Some discoloration in rock Weathered fabric. Decomposition extends up to 1 in.into rock. Moderately Rock mass is decomposed 50%or less. Significant portions of rock show discoloration and weathering effects. Weathered Crystals are dull and show visible chemical alteration. Discontinuities are stained and may contain secondary mineral deposits. Predominantly Rock mass is more than 50%decomposed. Rock can be excavated with geologist's pick. All discontinuities Decomposed exhibit secondary mineralization. Complete discoloration of rock fabric. Surface of core is friable and usually pitted due to washing out of highly altered minerals by drilling water. Decomposed Rock mass is completely decomposed. Original rock"fabric"may be evident. May be reduced to soil with hand pressure. RELATIVE ROCK HARDNESS SCALE: Hardness Approximate Unconfined Term Designation Field Identification Compressive Strength Extremely RO Can be indented with difficulty by thumbnail. May be < 100 psi Soft moldable or friable with finger pressure. Very R1 Crumbles under firm blows with point of a geology pick. 100-1,000 psi Soft Can be peeled by a pocket knife and scratched with fingernail. Soft R2 Can be peeled by a pocket knife with difficulty. Cannot 1,000-4,000 psi be scratched with fingernail. Shallow indentation made by firm blow of geology pick. Medium R3 Can be scratched by knife or pick. Specimen can be 4,000-8,000 psi Hard fractured with a single firm blow of hammer/geology pick. Hard R4 Can be scratched with knife or pick only with difficulty. 8,000-16,000 psi Several hard hammer blows required to fracture specimen. Very R5 Cannot be scratched by knife or sharp pick. Specimen > 16,000 psi Hard requires many blows of hammer to fracture or chip. Hammer rebounds after impact. RQD AND ROCK QUALITY: Relation of RQD and Rock Quality Terminology for Planar Surface RQD(Rock Description of Quality Designation),% Rock Quality Bedding Joints and Fractures Spacing 0-25 Very Poor Laminated Very Close < 2 in. 25-50 Poor Thin Close 2 in.—12 in. 50-75 Fair Medium Moderately Close 12 in.—36 in. 75-90 Good Thick Wide 36 in.—10 ft 90-100 Excellent Massive Very Wide > 10 ft G IMID 304 • 3 A S y m p »•--' -:.�`3AV H1trL M : .. q, m gria 0 ., —I ( t` gyV7 3° 1S2!laQwSMS / yO- ERtYTf 0 i ; Sraii � zSW677HAV-z i- - Q A PCV°Is q I ' r..�:o � !P. :IL-.`rn - ` • ``E z \ 63RDAt1E I� 1 '3 NVINB RANGY-I ' a [ O . rl Li 77'CY.. E K" . + ? I Hd31S m dQ 3AV GMME9 NI7C9P: '.• '. i '1 Fig . .0 - c r ?r v �� ' DA3N�-�. -. if D aI• + z a F, yYJ i o� W ,...'-or �� i r i • .a D WAY , II � z 't • ~ �, e153' 'CI\ 1��1WES , a1ya�f •. z TLW(EA. •, a BbNAIRE AVE •n S , ; . a Ya' '1 tyl5.'' d n o 1OIJ N7S� � —. ��S ram/+ a. Gj r.' . 1 Ifni. �Y Q ,p C dl CI IVdlN3D`CHALITWAY ., ( 1 Y ^ •' fAir s.� ` N yd o • G!1 5' ETERS s� i y h. sad AV\ -"'" '6' _ m . a 1 _ F l3W _ �'' D dUN d: Ott 9,s vo • : m 1,J.30V -r.• i F .- NJ r HA M { _� '• ., A $' UNJ a- r.�co z A yam •` i ��+k - ir: [n L a ��1 ", m 4 IFER DR c E E ,E r Hgp ' 1 r1 a ' iD A- _e d E 47 v o 49 Ind I LEry RL1 El. N`` • .rg ,' it .•N08219d *IV Z mi a r► AVM NCO �� S V I ,v, D bN19VS /.' • poi° ..„ ... ,-,) , , ,.. ..._,.. - A - 06 ,iit,,*,0 'g Gu � - W .,1,' >� O. % � `h ~ § � i . Sa yd Oa .1 Z O t \ a l • • �S sans 8a° _ �— i , o ° . ? S PERRY _ 1 7rr� i NO m �, IQfdA D . � i d a } i WFJLIBLEY PARK RD d T m ��. 11114 + 13 DalIMdD�C7 FIl... I. I u• k �� 1 w t A319'-r� j r' 0 306 I 1L5�`- /� 1- ' . _ ill l `` �L' __ __ "6 O @ ''0 > (--- 1�` \------M wj~ 4 1EXISTING WAIGGA RESERVOIR 1 f fWR11 - -~ 191'DIAMETER - STAGING AREA OR ➢i € ++ CONTRACTOR YAKKING A -` ?� I!Ps DETENTION POND 3 •\ I)‘ � � € ~� AMR,' '� i —-- ! 'ram V I STORM DRAIN 4S I ���. -7� q���l►/i�;R�` - y .a _+ram }�/._ �� � ��1`�` ^�.� liro ' 1 TP4 � '� � �/. 9 \ SBsa sera i- I 1 i 7P-S , ®/ 1, 1 min wALucAR�sFRVQIRz 1 u � �`n , t �� TP 1 R2 1 IJI i I { ` ` ',, 5MG SIW ! j 69 J - -- I I #1 I STAGING AREA OR 1... K -� ■ TEST PIT MADE BY GRI CONTRACTOR PARKING &, •'tag�r�� 1 -1 (MAYB,20121 'J * l 1 / P 1 s BORING MADE BY GEODESICN,INC iSITE PLAN FROM FILE 6Y BLACK&VEATCH(UNDATED! STORM WATER QUALITY/DETENTION POND - 1 1 111 1 j_ , _� _ _i1 - � 11111 _ — n I 1___I----- �~Y JI I Y-- 1�} I. 90 1(+O Fr t -J'31 -_'` I -�-_'J ®®� BLACK&VEATCH _ -_�__M1_ WALUGA RESERVOIR S2 r f- 1 SITE PLAN �_ I I AUG.2012 108 NO.5a62-C FIG CO Q TP-1 Elev. 295 ft(±) TP-2 Elev. 295 ft (±) Brown,clayey SILT;abundant fine roots(topsoil)Y Y � p ) Extremely soft to soft(RO to R2),brown to gra ^ BASALT;subangular to angular,gravel-,cobble-, 1 — Extremely soft to soft(RO to R2),brown to gray t and boulder-size rock fragments in matrix of silt BASALT;subangular to angular,gravel-,cobble-, 0 S-1 1 — with some clay and boulder-size rock fragments in matrix of silt w=26% 0 = — with some clay -- dium hard(R3),gray BASALT;moderately t weathered Ti2- 2 ❑ S-1 c — Practical refusal at 2 ft(518/12) Groundwater not encountered 3- - Medium hard(R3),gray BASALT;close joints;, moderately weathered 4 Practical refusal at 4 ft(518112) Groundwater not encountered o TP-3 Elev. 283 ft (±) o TP4 Elev. 263 ft (±) Brown,clayey SILT;abundant fine roots(topsoil) Brown,clayey SILT;abundant fine roots(topsoil) 1 Extremely sofa to soft(RO to R2),brown to gray 1 — Extremely soft to soft(RO to R2),brown to gray BASALT;subangular to angular,gravel-,cobble-, BASALT;subangular to angular,gravel-,cobble-, and boulder-size rock fragments in matrix of silt and boulder-sze rock fragments in matrix of silt = — with some clay = — with some clay m2 ,2 0 0 3— 3— Medium hard R3,grayBASALT;close hints, —odium hard(R3),gray BASALT;close joints, ( ) 1 moderately weathered 4— moderately weathered 4 Practical refusal at 4 ft(5/8112) Practical refusal at 4.2 ft(518112) Groundwater not encountered Groundwater not encountered LEGEND ❑ = GRAB SAMPLE w = NATURAL MOISTURE CONTENT G R El BLACK&VEATCH WALUCA RESERVOIR#2 GROUND SURFACE ELEVATIONS FROM SITE PLAN,FIGURE 2 TEST PIT LOGS MAY 2012 JOB NO, 5262-C FIG. 3 308 TP-5 Elev. 250 ft (±) TP-6 Elev. 304 ft (±) 0 D r FILL: 1-in.-minus CRUSHED ROCK with varying FILL: 1-in.-minus CRUSHED ROCK with varying — amounts of silt and fine roots — amounts of sill,underlain by geotextile fabric 1 — Medium stiff to stiff,brown,clayey SILT;roots 1 to 4-in.diameter Extremely soft to soft(RO to R2),brown to gray — BASALT;subangular to angular,gravel-, Extremely soft to soft(RO to R2),brown to gray o cobble-,and boulder-size rock fragments in 2— BASALT;subangular to angular,gravel-,cobble-, 2— matrix of silt with some clay and boulder-size rock fragments in matrix of silt — with some clay — Medium hard(R3),gray BASALT;close joints, _ /moderately weathered = 3 ❑S-1 3 w=59% Practical refusal at 3 ft(518112) 0 — Groundwater not encountered 4— 5— medium hard(R3)basalt boulder(>3 ft in diameter)at 5 ft 6— 7 Bottom of test pit 7 ft(5f8f12) Groundwater not encountered LEGEND ❑ = GRAB SAMPLE w = NATURAL MOISTURE CONTENT G RO BLACK&VEATCH WALUGA RESERVOIR#2 GROUND SURFACE ELEVATIONS FROM SITE PLAN,FIGURE 2 TEST PIT LOGS MAY 2012 JOB NO. 5262 C FIG. 4 309 310 Report of Geotechnical Engineering Services, Proposed Waluga Reservoir (GeoDesign, March 22, 2011) 311 312 ._._ GEODESIGN Z REPORT OF GEOTECHNICAE ENGINEERING SERVICES Proposed Waluga Reservoir Lake Oswego, Oregon • For Brown and Caldwell March 22, 201 1 GeoDesign Project: BrownCald-49-04 / Engineers Geologists Environmental Consultants 313 GEO DESIGN March 22, 2011 Brown and Caldwell 6500 SW Macadam Avenue, Suite 200 Portland, OR 97239 Attention: Ms. Corianne Hart Report of Geotechnical Engineering Services Proposed Waluga Reservoir Lake Oswego, Oregon GeoDesign Project: BrownCald-49-04 GeoDesign, Inc. is pleased to submit our geotechnical report for the proposed Waluga Reservoir located in Lake Oswego, Oregon. Our services for this project were conducted in accordance with our proposal dated May 24, 2010. This report presents the results of our surface reconnaissance, subsurface exploration, laboratory analyses, and presents our conclusions regarding the project. We appreciate the opportunity to be of continued service to you. Please call if you have questions regarding this report. Sincerely, GeoDesign, Inc. Brett A. Shipton, P.E., G.E. Principal Engineer cc: Mr. Brett Teel, Brown and Caldwell(via email only) Mr. Bob Jossis, Brown and Caldwell (via email only) ECM:BAS:kt Attachments Seven copies submitted Document ID:BrownCald-49-04-03221 1•geor.doc 2011 GeoDesign,Inc. All rights reserved. 314 15575 SW Sequoia Piney-Suite 100 I Portland,OR 97224 i 08 503,968.8787 I Fax 503.968.3068 TABLE OF CONTENTS PAGE NO. 1.0 INTRODUCTION 1 2.0 PURPOSE AND SCOPE 1 3.0 SITE CONDITIONS 2 3.1 Surface Conditions 2 3.2 Geologic Setting 2 3.3 Subsurface Conditions 3 4.0 CONCLUSIONS AND RECOMMENDATIONS 4 5.0 SITE DEVELOPMENT RECOMMENDATIONS S 5.1 Site Preparation 5 5.2 Haul Road Guidelines 6 5.3 Structural Fill 6 5.4 Fill Placement and Compaction 7 5.5 Cut and Fill Slopes 9 5.6 Site Drainage 9 5.7 Erosion Control 9 5.8 Excavation 10 6.0 FOUNDATION SUPPORT RECOMMENDATIONS 11 6.1 Mat Foundation Recommendations 11 6.2 Ring Wall Foundation Recommendations 12 6.3 Lateral Resistance 13 6.4 Settlement 13 6.5 Buried Structures 13 6.6 Seismic Design Criteria 14 7.0 LIMITATIONS 14 REFERENCES 16 FIGURES Vicinity Map Figure 1 Site Plan Figure 2 Cross Section A-A' Figure 3 Cross Section B-B' Figure 4 Cross Section C-C' Figure 5 Cross Section D-D' Figure 6 U.S. Bureau of Mines Vibration Damage Criteria Figure 7 Lateral Earth Pressures for Below-Grade Structures in Soil and Soft Rock Figure 8 Lateral Earth Pressures for Below-Grade Structures in Medium Hard to Hard Rock Figure 9 Surcharge-Induced Lateral Earth Pressures Figure 10 Horizontal Pressure Factors from the Proposed Reservoir on Below-Grade Walls in Undisturbed Soils or Structural Fill Figure 11 Horizontal Pressure Factors from the Proposed Reservoir on Below-Grade Walls in Undisturbed Medium Hard to Hard Rock Figure 12 Embedded Wall Drain Detail Figure 13 G EODESIGN= BrownCald-49-04:03221 1 315 TABLE OF CONTENTS PAGE NO. APPENDICES Appendix A Field Explorations A-I Laboratory Testing A-1 Exploration Key Table Al Soil Classification System Table A-2 Rock Classification System Table A-3 Boring Logs Figures A-1 -A-11 Atterberg Limits Test Results Figure A-12 Grain Size Test Results Figure A-13 Summary of Laboratory Data Figure A-14 Core Photographs Figures A-1 5 -A-34 Appendix B Outside Laboratory Testing B-1 Laboratory Report ACRONYMS G EO DE5MG N% Browntald-49-04:03221 1 316 1.0 INTRODUCTION GeoDesign, Inc. is pleased to submit this report of geotechnical engineering services for the proposed Waluga Reservoir. The proposed reservoir is located northwest of the existing Waluga Reservoir, in a forested area north of SW Parkhill Drive and west of Waluga Drive, in Lake Oswego, Oregon. The site location relative to surrounding physical features is shown on Figure 1. Current plans for the new Waluga Reservoir call for construction of a 3.5-MG capacity, pre- stressed concrete tank as specified under AWWA D110 or D1 1 5 Standards with an internal diameter of approximately 130 feet. The proposed tank is approximately 40 feet tall. We understand the preferred foundation type is a mat foundation constructed at the same base elevation as the existing reservoir(300 feet above MSL). In our opinion, it is geotechnically feasible to support the 3.5-MG tank on a mat foundation. The water tank foundation loads were not known at the time of this report; however,we have assumed that maximum applied loads on the mat foundation will be less than 3,000 psf. A 36-inch-diameter pipe is planned for both the tank inflow and outflow locations, resulting in an approximately 8-foot-deep, 6-foot-wide trench. Plans for the tank were preliminary during our geotechnical explorations in June 2010, and at the time, the team was considering a variety of locations for the tank. The current proposed location is at the north end of the area originally under consideration, as shown on Figure 2. For your reference, definitions of all acronyms used in this report are attached at the end of this document. 2.0 PURPOSE AND SCOPE The purpose of our services was to characterize subsurface conditions and provide geotechnical engineering recommendations for use in design and construction of the proposed tank. Specifically, we performed the following tasks: • Reviewed geologic and geotechnical data relevant to the site. • Coordinated and managed the field investigation, including locating utilities and scheduling contractors and GeoDesign's staff. • Drilled 11 borings within the proposed tank footprint to depths ranging between 14.8 and 30.5 feet BGS. • Obtained undisturbed and disturbed soil and rock samples for laboratory testing, and maintained a log of encountered soil, rock, and groundwater conditions in the exploratory borings. • Completed a laboratory testing program on selected soil samples collected from the explorations consisting of the following tests: • Six moisture content determinations in general accordance ASTM D 2216 • One percent fines determination in general accordance with ASTM D 1 140 • Three particle size analyses in general accordance with ASTM C 1 1 7 and ASTM C 136 • One Atterberg limits determination in general accordance with ASTM D 4318 • Fifteen uniaxial unconfined compression strength tests in general with ASTM D 2938 G£0 DESIG Nk I BrownCald-49-04:032211 317 • Evaluated groundwater conditions at the site, and provided general recommendations for dewatering during construction and subsurface drainage, if required. • Provided recommendations for site preparation, grading and drainage, compaction criteria for both on-site and imported materials, fill type for imported materials, procedures for use of on-site soils, and wet weather earthwork procedures. • Provided recommendations for the use of on-site native and fill materials for support of mat foundations. • Provided foundation design recommendations, including preferred foundation type, allowable bearing capacity, settlement, frost depth, and lateral resistance parameters. • Provided a commentary on and recommendations for protecting existing utilities and pipelines if blasting is employed and the suitability of using non-explosive chemical agents. • Provided a commentary on the applicability of our geotechnical findings for potential reservoir locations further north at the same site. • Provided a discussion of seismic activity in the site vicinity, and assessed seismic hazards, including liquefaction potential and ground motion amplification. • Provided recommendations for seismic design factors in accordance with the procedures outlined in NEHRP. • Provided this geotechnical report detailing our findings. 3.0 SITE CONDITIONS 3.1 SURFACE CONDITIONS The site is partially developed with one residential structure located on the north end of the property and a large aboveground concrete water reservoir located on the south end of the property, as shown on Figure 2. The site for the proposed water tank is generally flat and slopes gently to the north with elevations ranging from 298 to 307 feet above MSL. Mature conifer and deciduous trees with ivy, blackberries, and low shrubs covered the site at the time of our exploration. Basalt cobbles and boulders are commonly exposed through the surface of the forest duff and forest litter across the site. 3.2 GEOLOGIC SETTING The site is located on the north-facing slope of a low hill that is situated in the southeast portion of the Tualatin Basin physiographic province. The Tualatin Basin is a northwest-to southeast- trending structural basin bound by the Portland Hills and Tualatin Mountains to the north and east and the Chehalem Mountains and Coast Range to the south and west, respectively(Wilson, 1998). The near-surface geologic unit is mapped as late Pliocene to early Pleistocene age (5 million to 1.5 million years before present) Boring Lava, which consists of localized basalt lava flows and flow breccia(Beeson, et al., 1989). The small hill is reported to be a volcanic vent that erupted through and built a cone over older sedimentary and volcanic bedrock units (Madin, 1990;Schlicker and Finlayson, 1979). The Boring Lava produced a variety of materials that includes interstratified layers of highly vesicular and dense basalt flows, basalt flow breccia, and tuff. The thickness of the Boring Lava flows is estimated to be 150 feet in the site vicinity. The Boring Lava typically weathers to clay with cobbles and large boulders. G E O DESIG N 2 BrownCald-49-04:032211 318 A volcanic vent is mapped northwest of the existing water tank and may be within the site boundary(Beeson, et al., 1989; Madin, 1990). Vent materials can be highly variable, ranging from dense lava flows and tuff to decomposed volcanic flows and hydrothermally altered bedrock units. 3.3 SUBSURFACE CONDITIONS We explored subsurface conditions at the site by drilling 11 borings (B-i through B-11)to depths ranging between 14.8 and 30.5 feet BGS. The approximate locations of the borings are shown on Figure 2. Descriptions of the field explorations, laboratory procedures, and logs of the explorations are provided in Appendix A. During our explorations, we Observed an approximately 4-to 10-inch-thick forest duff zone with an approximately 2-to 6-inch-thick root zone covering a majority of the site. The forest duff generally consists of medium stiff silt and clay with varying amount of sand, gravel, cobbles, boulders, and organics. The subsurface conditions underlying the forest duff generally consist of colluvium soil that overlies volcanic and sedimentary bedrock units. The subsurface conditions are summarized on cross sections A-A', B-B', C-C', and D-D' as shown on Figures 3 through 6, respectively. 3.3.1 Colluvium The forest duff layer is underlain by colluvium that generally consists of medium dense to dense, brown gravel with variable amounts of clay, silt, sand, cobbles, and boulders. The gravel colluvium was encountered in all of the explorations and extends to depths ranging between 2.5 to 5.8 feet BGS. Medium stiff to stiff silt and clay with varying amounts of sand, gravel, and cobbles was encountered in borings B-7, B-9, and B-10 at depths ranging between 1.0 and 3.0 feet BGS. 3.3.2 Boring Lava The colluvium is underlain by basalt bedrock interpreted to belong to volcanic flows of the Boring Lava geologic formation. Boring Lava was encountered in all of our borings except for boring B-10. In general, the volcanic bedrock ranges from extremely soft (RO)to hard(R4) basalt with a variable degree of weathering, discontinuities (fractures and joints), and vesicular content. The degree of weathering ranges from decomposed to moderately weathered and is commonly associated with the age of the rock unit and exposure to weathering agents, such as water. The decomposed basalt is generally red-brown to brown, extremely soft(RO)to very soft(R1), and exhibits a soil-like consistency. Decomposed and intensely weathered rock was encountered at the lava flow contact surfaces where groundwater is likely to occur. The moderate to slightly weathered basalt is generally gray, soft(R2)to very hard(R5), and exhibits a vesicular texture with fine-grained olivine and plagioclase crystals. The vesicular content of the basalt ranges from 10 to 40 percent based on visual estimate. Weathering of the rock mass also occurred along discontinuities that included fractures and joints. The basalt generally ranges from intensely to slightly fractured with rough, irregular, open fracture faces containing iron oxide and clay coating and filling. Predominant fracture G EODESIGN= 3 RrownCald-49-04:03221 1 319 orientations ranged 10 to 30 degrees, 40 to 60 degrees, and 70 to 80 degrees from a horizontal plane. Joints in the basalt are generally smooth and planar with predominant orientations of 55 degrees and 70 to 80 degrees from a horizontal plane. 3.3.3 Siltstone Siltstone bedrock was observed underlying the colluvium and basalt bedrock in borings B-9 and B-10. The siltstone is typically extremely soft(R0), light brown to gray-brown, decomposed to intensely weathered, and intensely to moderately fractured. Predominant fracture orientations were 10 degrees, 20 to 45 degrees, and 70 degrees from a horizontal plane. The siltstone contains sandstone interbeds and laminations, indicating a fluvial deposition environment. A basalt flow contact was encountered between the basalt lava flow and the underlying siltstone bedrock in boring B-9, indicating that the siltstone likely interfingers with the Boring Lava flows at depth under the site. 3.3.4 Groundwater Water was used as a fluid during exploration making it difficult to observe groundwater conditions. The water level was not present in boreholes left open overnight, indicating groundwater likely flows into bedrock fractures down to the regional water table. The regional water level is mapped between approximately 40 and 60 feet BGS(Snyder, 2008). However, zones of perched water may be observed on top of the bedrock, especially after periods of extensive rainfall. 4.0 CONCLUSIONS AND RECOMMENDATIONS Subsurface conditions encountered in the explorations and our recommendations for feasible construction methods for the trench at the proposed Waluga Reservoir are provided in the following sections. Based on our geotechnical investigation, the following factors are likely to have an impact on design and construction_ • The proposed reservoir can be supported on a mat foundation. For foundations constructed as discussed in the"Foundation Support Recommendations"section of this report, we estimate maximum settlements of up to 1 inch. • The near-surface soils are sensitive to moisture and are easily disturbed when at a moisture content that is above optimum. The subgrade should be protected from construction traffic. • The on-site silty soils were wet of optimum moisture content at the time of our exploration and will require moisture conditioning if they are to be used as structural fill. • The near-surface soils will be impossible to compact during wet weather. To avoid the cost associated with importing granular fill soils, we recommend that earthwork be scheduled for the dry season. • Cobbles and boulders are present in the upper colluvial soils mantling the site. Utility excavations will likely require removal of some cobbles and boulders. Where encountered, removal of cobbles and boulders will be difficult, may require special equipment, and may result in larger backfill volumes. Excavation estimates and the project budget should account for enlarged trenches and slowed excavations. G E O DESI GN z 4 BrownCald-49-04:032 21 1 320 • Based on the subsurface conditions encountered,we anticipate basalt bedrock will be encountered at depths ranging between 2.5 and 5.8 feet BGS and elevations ranging between 301.5 to 291.5 feet above MSL. As discussed in the"Excavation" section of this report, excavation in basalt will be difficult and will require special equipment and excavating techniques. This includes controlled blasting, breaking the rock with an excavator-mounted hydraulic jackhammer, and use of non-explosive chemical agents. 5.0 SITE DEVELOPMENT RECOMMENDATIONS 5.1 SITE PREPARATION 5.1.1 Stripping,Grubbing, and Demolition Demolition includes complete removal of existing site improvements within 5 feet of areas to receive new engineered fills. Underground vaults, tanks, manholes, and other subsurface structures should be removed in areas of new improvements- Utility lines can be completely removed or grouted full if left in place, Any voids resulting from removal of existing improvements should be backfilled with compacted structural fill, as discussed in the"Structural Fill"section of this report. The bottom of such excavations should be excavated to expose a firm subgrade before filling and their sides sloped at a minimum of 1 H:1 V to allow for more uniform compaction at the edges of the excavations. The existing organic material and topsoil should be stripped and removed from all proposed building and pavement areas. Based on our explorations, we anticipate a stripping depth of approximately 4 to 10 inches of forest duff. Greater stripping depths will likely be required to remove the root systems of trees. Greater depths may also be necessary to remove localized zones of organic material. Stripped material should be transported off site for disposal or used as fill in landscaping areas. We recommend that the primary root systems for trees and other vegetation be completely removed. Trees designated for preservation should be clearly marked prior site stripping. Trees and their root balls should be grubbed to the depth of the roots. Depending on the methods used to remove the root balls, considerable disturbance of the subgrade could occur during site clearing and grubbing. We recommend that soil disturbed during clearing and grubbing operations be improved as described in subsequent sections of this report. 5.1.2 Subgrade Evaluation The subgrade should be evaluated after site preparation and prior to placing structural fill. The subgrade should be proofrolled with a fully loaded dump truck or similar heavy, rubber-tire construction equipment to identify areas of excessive yielding,which may be indicative of underlying soft, loose, or unsuitable soil. A member of our geotechnical staff should observe proofrolling to evaluate soft or yielding subgrade. Soft or loose zones identified during proofrolling should be excavated and replaced with compacted structural fill. Areas that appear soft should be improved in accordance with subsequent sections of this report. We anticipate that significant subgrade disturbance will occur during site preparation activities and removal of tree roots. Consequently, careful observation should be made to identify areas of potential soft or unsuitable soils. G EO DESIGN? 5 BrownCald-49.04:032211 321 5.1.3 Wet Weather Considerations Trafficability of the fine-grained subgrade soils is expected to be difficult during periods of wet weather or when the moisture content of the subgrade is more than a few percentage points above optimum. When wet, the on-site fine-grained soils are susceptible to disturbance. The subgrade should be protected by limiting construction traffic to staging areas and haul roads. Recommendations regarding staging areas and haul roads are provided in the"Haul Road Guidelines" section of this report. During wet weather, the subgrade should be evaluated by probing with a steel rod rather than by proofrolling. Soil that is disturbed during site preparation activities in wet weather, as well as soft or loose zones identified during probing, should be removed and replaced with compacted structural fill. We strongly recommend that earthwork be scheduled for a period of extended dry weather to avoid the cost associated with importing granular fill material or soil improvement. 5.2 HAUL ROAD GUIDELINES The use of granular haul roads will be necessary for support of construction traffic during most of the year, with the possible exception of the mid-summer to early fall period (typically from early July to mid-October). Haul roads and staging areas should be constructed using imported granular material. The contractor has control over construction methods and equipment and should, therefore, be responsible for selecting the appropriate thickness for haul roads and staging area pads. However, in our experience, an 18-inch-thick layer of imported granular material placed over the undisturbed subgrade is typically sufficient for haul roads. A 12•inch-thick layer of imported granular material should be sufficient for light staging areas. If additional support is required, the granular material can be underlain by a geotextile. Imported granular material should consist of crushed rock or crushed gravel that is well graded between coarse and fine sizes, contain no deleterious materials or rock particles larger than 3 inches, and have less than 5 percent by dry weight passing the U.S. Standard No. 200 Sieve. The geotextile should have a minimum Mullen burst strength of 250 psi and an apparent opening size between U.S. Standard No. 70 and No. 100 Sieves. 5.3 STRUCTURAL FILL Structural fill includes fill beneath foundations, slabs, pavements, any other areas intended to support structures, or within the influence zones of structures. Structural fill should be free of organic matter and other deleterious materials and, in general, should consist of particles no larger than 3 inches in diameter. Recommendations for suitable fill materials are provided in the following sections. 5.3.1 On-Site Soil The on-site native soil will be suitable for use as structural fill only if it can be moisture conditioned. Based on our experience, the on-site silty soil is sensitive to small changes in moisture content and may be difficult to compact adequately during wet weather or when its moisture content is more than a few percentage points above optimum. Cobbles and boulders were encountered in the in the native silts and clays. The soils may require processing to remove G EO DESIG N= 6 Brown Cald-44-04:03221 1 322 cobbles and boulders greater than 3 inches in diameter. Cobbles and boulders greater than 3 inches in diameter should not be used unless processes meet the criteria in Table 2 of this report. 5.3.2 Select Granular Fill Granular material for use as structural fill should consist of pit-or quarry-run rock, crushed rock, or crushed gravel and sand that is fairly well graded between coarse and fine and has less than 5 percent by dry weight passing the U.S. Standard No. 200 Sieve. Granular fill used during periods of prolonged dry weather may have up to 10 percent by dry weight passing the U.S. Standard No. 200 Sieve, provided it is properly moisture conditioned. 5.3.3 Pipe Bedding Utility trench backfill for bedding and in the pipe zone should consist of well-graded granular material with a maximum particle size of% inch and less than 5 percent by dry weight passing the U.S.Standard No. 200 Sieve or as required by the pipe manufacturer. 5.3.4 Crushed Rock Crushed rock will be required as base material for the tank pads and beneath ring wall footings. Crushed rock fill should consist of imported clean, relatively well-graded, durable, crushed, angular rock that has less that 5 percent by dry weight passing the U.S.Standard No. 200 Sieve. 5.3.5 Crushed Rock Drain rock should consist of angular, granular material with a maximum particle size of 2 inches and should meet OSSC 00430.11 (Granular Drain Backfill Material). The material should be free of roots, organic matter, and other unsuitable materials; have less than 2 percent by dry weight passing the U.S. Standard No. 200 Sieve(washed analysis); and have at least at least two mechanically fractured faces. 5.4 FILL PLACEMENT AND COMPACTION Fill soils should be compacted at a moisture content that is near optimum. The maximum allowable moisture content varies with the soil gradation and should be evaluated during construction. Fill and backfill material should be placed in uniform, horizontal lifts and compacted with appropriate equipment. The maximum lift thickness will vary depending on the material and compaction equipment used but should generally not exceed the loose thicknesses provided in Table 1. Fill material should be compacted in accordance with the compaction criteria provided in Table 2. G EODESIGNz 7 BrownCald-49-04:032211 323 Table 1. Recommended Uncompacted Lift Thickness Recommended Uncompacted Lift Thickness (inches) Compaction Equipment Granular and Crushed Crushed Rock Silty Soils Rock Maximum Maximum Particle Particle Size 1Y2 inches Size > 11 inches Hand Tools: Plate Compactors and 4 to 8 4 to 8 Not Recommended Jumping Jacks Rubber-Tire Equipment 6 to 8 10 to 12 6 to 8 Light Roller 8 to 10 10 to 12 8 to 10 Heavy Roller 10 to 12 12 to 18 12 to 16 Hoe Pack Equipment 12 to 16 18 to 24 12 to 16 Table I is based on our experience and is intended to serve only as a guideline. The information provided in this table should not be included in the project specifications. Table 2. Compaction Criteria Compaction Requirements in Structural Zones Percent Maximum Dry Density Fill Type Determined by ASTM D 1557 0 to 2 Feet Below >2 Feet Below Subgrade Subgrade Pipe Zone (percent) (percent) (percent) Area Fill 95' 92 Aggregate Bases 95 95 Trench Backfill 95' 92 90' Retaining Wall Backfill 951.3 92' 1. May be reduced to 92 percent if native soils are used. 2. Or as recommended by the pipe manufacturer. 3. Should be reduced to 90 percent within a horizontal distance of 3 feet from the retaining wall. 5.4.1 Area Fills Imported fill placed to raise site grades should be placed on a prepared subgrade that consists of firm, inorganic site soils or compacted fill. The fill material should be placed in uniform horizontal lifts and compacted to the recommended minimum density provided in Table 2. 5.4.2 Aggregate Base Aggregate base materials under foundations should be placed on a prepared subgrade that consists of firm, inorganic, native soils or compacted fill. Aggregate base material should be placed in uniform horizontal lifts and compacted to the recommended minimum density provided in Table 2. CEO DESI G N= B BrownCald-49-04:03221 1 324 5.4.3 Trench Backfill Trench backfill in structural areas should consist of select granular fill or crushed rock as described in the"Structural Fill" section of this report and be compacted to the minimum density provided in Table 2. Pipe bedding and fill in the pipe zone should be compacted to the minimum density presented in Table 2 or as recommended by the pipe manufacturer. 5.4.4 Recycled On-Site Material Over-sized rock may be used as fill if it is processed to meet the requirements for its intended use. Processing includes crushing and screening, grinding in place, or other methods to meet the requirements for structural fill as described above. The processed material should be fairly well graded and contain no organic or other deleterious materials. The processed material may be mixed with on-site soils or imported fill to assist in achieving the gradation requirements. We recommend that processed recycled fill have maximum particle sizes as presented in Table 3. Table 3. Processed Fill Maximum Particle Size Depth of Placement' Maximum Particle Size 0 to 2 feet Not recommended 2 to 6 feet 4 inches 6 to 10 feet 8 inches deeper than 10 feet 12 inches I. below subgrade of structural element Recycled on-site fill materials should not be used within a depth of 2 feet from foundations. We also caution that excavation through recycled material that is placed as structural fill may be difficult due the significant fraction of oversized particles. In addition,these excavations may also be prone to raveling and caving. S.5 CUT AND FILL SLOPES Permanent cut and fill slopes in the site soils should be inclined no steeper than 2H:1 V. We recommend that slopes that are to be mowed not exceed 3H:1 V. Buildings, access roads, and pavements should be set back a minimum of 5 feet from the crest of any such slopes. 5.6 SITE DRAINAGE We recommend that roof drains, retaining wall back drains, and other subsurface drains be connected to non-perforated pipes leading to the stormwater disposal facility. Access road, parking, and open space areas should be sloped such that surface water runoff is collected and routed to suitable discharge points. We recommend that ground surfaces within 10 feet of structures be sloped at least 2 percent away from the foundations. 5.7 EROSION CONTROL The on-site soils are moderately susceptible to erosion. Consequently,we recommend that slopes be covered with an appropriate erosion-control product if construction occurs during G EODESIGN= 9 BrownCald-49-04:032211 325 periods of wet weather. We recommend that all slope surfaces be planted as soon as practical to minimize erosion. Surface water runoff should be collected and directed away from slopes to prevent water from running down the slope face. Erosion control measures such as straw bales, sediment fences, and temporary detention and settling basins should be used in accordance with local and state ordinances. 5.8 EXCAVATION We do not anticipate that groundwater will be encountered. However, perched groundwater may be present on top of the bedrock, especially during or after periods of significant precipitation. The contractor should be prepared to dewater excavations, if necessary. Cobbles and boulders will likely be encountered in the overburden soils during excavation. Where encountered, cobbles and boulders will result in difficult trench excavations and may require special equipment and procedures for removal. Where cobbles and boulders are encountered,trenches may be wider than anticipated, increasing the amount of backfill material required. Excavation in the bedrock will require specialized excavation techniques. This includes controlled blasting and breaking the rock with an excavator-mounted hydraulic jackhammer. Breaking rock with a jackhammer uses equipment readily available and can be performed by a variety of contractors. Breaking rock with a jackhammer typically produces less ground vibration than blasting. However, this excavation technique can be more expensive than blasting when large volumes of rock are removed and produces high levels of noise for long periods. Blasting may be used to remove rock for the project. Controlled blasting can be performed quickly and can be an economical alternative. Controlled blasting can produce ground vibrations that are perceptible and may be considered unpleasant to people. We understand that blasting was performed during the construction of the original Waluga Reservoir, resulting in complaints from the surrounding residents. Laboratory testing performed on humans exposed to expected, continuous steady state vibrations generally indicates vibrations become perceptible at levels of 0.02 inch per second and unpleasant to most people at approximately 0.2 inch per second. However, there is a wide variation in vibration tolerance within residential areas, and specific values are a function of social and cultural factors, as well psychological attitudes. If blasting is used, we recommend that it be performed in conjunction with outreach to owners of the surrounding properties. Controlled blasting must also be performed by an experienced contractor with an approved blasting plan designed to protect existing utilities, infrastructure, and surrounding residences. At a minimum, we recommend that any blasting plan include a detailed pre-construction survey of all structures within 500 feet of where blasting will be performed documenting all pre-existing structural and cosmetic damage using engineering sketches, videotape, photographs, and notes. The plan should also include a detailed inventory of the proximity, age, and type of all buried pipes and subsurface structures. Based on the results of the survey, an acceptable vibration limit should be established. At a minimum, the vibrations at surrounding residential structures should be limited to the thresholds established to prevent damage to residential structures by the U.S. Bureau of Mines Report of Investigations #8507 and shown on Figure 7 of this report. Vibration monitoring will be required during blasting to monitor and document the peak particle velocities produced by the blasting. C E0 DESIGN 1 a BrownCard-49-04:032211 326 Non-explosive chemical agents are an alternative to blasting. When chemical agents are used, holes are drilled in the bedrock. The slurry agent is poured in the holes and expands, typically for a period of a few hours, and breaks up the rock. There are several different types of non- explosive chemical agents. Some of these agents are cement-based products that expand during the hardening process. However, others list fuel oils and"perchlorates"as chemical agents. Several cement-based, non-explosive agents are inert when cured and have not historically required special permits and disposal requirements. The more inert products carry less risk of adverse environmental and regulatory problems. However, if non-explosive blasting is used, we recommend that it be performed by a qualified contractor who has successfully performed three projects in the state of Oregon with no adverse, unmitigated environmental impacts. The effectiveness of non-explosive chemical agents can be adversely affected by cracks and fissures in the bedrock, moisture in the rock, and other factors. Consequently, the results of non- explosive chemical agents are less predictable and generally less effective than conventional blasting; breaking and ripping the rock is usually still required. The cost of chemical blasting is a function of the rock type and other factors, but it is typically two to three times that of blasting. All excavations should be made in accordance with applicable OSHA and state regulations. Trench cuts should stand vertical to a depth of approximately 4 feet, provided groundwater seepage does not occur in the trench walls. Open excavation techniques may be used to excavate trenches with depths between 4 and 10 feet, provided the walls of the excavation are cut at a slope of 1.SH:1V and groundwater seepage does not occur. Where it is not feasible to slope trench excavation back due to the presence of bedrock, the contractor may wish to use a shoring box or other approved shoring technique. While we have described certain approaches to excavation, the contractor is responsible for selecting the excavation and dewatering methods, monitoring the trench excavations for safety, and providing shoring as required to protect personnel and adjacent improvements. 6.0 FOUNDATION SUPPORT RECOMMENDATIONS Based on our correspondence with Brown and Caldwell, we understand that a mat foundation is the preferred foundation alternative for the site. Mat foundations have the advantage of reducing the contact pressures of a structure by dispersing load over the entire footprint of the structure. By virtue of the large area, the contact pressures are driven deeper into the subsurface soils with mat foundations,where native basalt is present. The existing ground surface elevation ranges between approximately 297 and 302 feet above MSL but is typically between 299 and 301 feet above MSL, resulting in site cuts and fills of less than a few feet. Rock was encountered at elevations ranging from approximately 296 and 299 feet above MSL at the location of the proposed tank. The following sections present our specific recommendations for design of the tank mat foundation and ring wall foundations. 6.1 MAT FOUNDATION RECOMMENDATIONS 6.1.1 Subgrade Preparation A mat foundation bearing on the medium dense to dense gravels or on the basalt can be used to support the proposed tank. We recommend the mat foundation be supported on a granular pad ®n.EslGN 1 l BrownCald-49-04:032211 327 that consists of crushed rock material that is least 18 inches thick and extends beyond the foundation perimeter by a minimum of 12 inches. The granular pad should consist of imported granular material, as defined in the "Structural Fill"section of this report. The imported granular material should be compacted to not less than 95 percent of the maximum dry density, as determined by ASTM D 1557 or until well keyed, as determined by one of our geotechnical staff. We recommend that a member of our geotechnical staff observe the granular pad subgrade prior to placing the crushed rock and that we observe compaction testing on the crushed rock structural fill prior to placing reinforcing steel for the mat foundation. 6.1.2 Bearing Capacity The structural loads were not available at the time of this report; however,we have assumed that applied static loads on the mat foundation will be less than 3,000 psf. Based on our subsurface investigation, laboratory testing, and engineering analyses, the water tank can be designed and constructed based on a net allowable bearing pressure of 6,000 psf if bearing on the underlying gravel or 10,000 psf if bearing on the underlying basalt. 6.1.3 Subgrade Modulus We recommend the mat foundation be designed using a static subgrade modulus (k) of 200 pci for the medium dense to dense gravels and 800 pci for the basalt. The subgrade modulus value was determined using correlations with SPT blow count data from our explorations and published values for bedrock. A dynamic modulus equal to twice the static modulus can be used for analyses of dynamic loads. 6.1.4 Mat Foundation Settlement For the foundation designed in accordance with the recommendations provided above, the total post-construction settlements should be less than 1 inch and differential settlement less than %2 inch. 6.2 RING WALL FOUNDATION RECOMMENDATIONS 6.2.1 Foundation Subgrade Preparation If the ring walls will be supported by separate ring wall foundations, we recommend the ring wall foundations be supported on pads that consist of granular material that are least 12 inches thick and extend beyond the footing perimeter by 6 inches in both directions or on undisturbed basalt bedrock. The granular material can consist of the gravel that is present on site or imported granular material. The granular material should be compacted to at least 95 percent of the maximum dry density,as determined by ASTM D 1557. 6.2.2 Bearing Capacity The ring wall foundations should be proportioned for a maximum allowable soil bearing pressure of 6,000 psf if bearing on the medium dense to dense gravel and 10,000 psf if bearing directly on the underlying basalt. These bearing pressures are net bearing pressures. The bearing pressure applies to the total of dead and long-term live loads and may be doubled when considering seismic or wind loads. The weight of the footing and any overlying backfill can be ignored in calculating footing loads. This bearing pressure is in addition to the hydrostatic pressure head. The ring wall footing should be established at least 18 inches below adjacent site grades to penetrate the minimum frost depth and have a minimum width of 1.5 feet. CEO DES IG N V 12 BrownCald-49-04:03221 1 328 6.3 LATERAL RESISTANCE Lateral loads on footings can be resisted by passive earth pressure on the sides of footings and by friction on the base of the footings. We recommend a friction coefficient of 0.45 for footings bearing on the gravels and 0.5 for footings bearing on the basalt. Our analysis indicates that the available passive earth pressure for footings confined by structural fill or for footings constructed in direct contact with native gravel or structural fill is 350 pcf. These values are based on the assumptions that the adjacent confining structural fill or native materials are level and that static groundwater remains below the base of the footing throughout the year. Adjacent floor slabs, pavements, or the upper 12-inch depth of adjacent unpaved areas should not be considered when calculating passive resistance. 6.4 SETTLEMENT The ring wall and mat foundations should experience settlements of less than Y2 inch due to the dead load of the structure only. Differential settlements of up to one-half of the total settlement magnitude can be expected. We expect that settlement will occur as loads are applied. 6.5 BURIED STRUCTURES Catch basin and valve vaults will be located adjacent to the proposed reservoir. The vault valves are anticipated to be 10 feet deep and 15 feet long by 10 feet wide. Below-grade structures such as the pump station should be designed using the lateral earth pressures. For walls buried in soil or in extremely soft(Ro)to soft(R2) bedrock,we recommend using the lateral earth pressures provided on Figure 8. Typically, movements of up to 0.002 times the wall height are required to develop active earth pressures; assuming drained conditions, an equivalent fluid pressure of 35 pcf can be used to design the buried walls. For 10-foot-high wails restrained at the top, where a lateral deflection of%4 inch is not possible,we recommend using an equivalent fluid pressure of 55 pcf, assuming freely draining backfill. Structures buried in medium hard (R3) to very hard basalt (R5) may be designed using the pressures indicated on Figure 9. Surcharge loads from soil stockpiles and construction traffic in native soils and structural fill may be computed using the surcharge loads from Figure 10. Lateral pressure from temporary stockpiles or construction loads less than 1,000 psf will be negligible in intact medium hard to very hard rock, The surcharge from the proposed water tank can be computed using the loads presented on Figures 11 and 12. Figure 11 is appropriate for soils and very soft (RO)to soft (R2) rock. Figure 12 is appropriate for medium hard (R3)to very hard(R5) rock. Seismic lateral forces can be calculated using a dynamic force equal to 6H2 pounds per linear foot of wall(where H is the wall height). The seismic force should be applied as a distributed load with the centroid located at 0.6H from the wall base. The values provided in this section are unfactored. To avoid the buildup of hydro-static pressures, we recommend that the walls be backfilled with a minimum 2-foot-wide column of angular drain rock wrapped in a geotextile placed against the wall and the on-site soils (see Figure 13). Perforated collector pipes should be placed at the base of the granular backfill behind the walls. The drain rock should meet specifications provided in the"Structural Fill"section of this report. The drain rock should be wrapped in a geotextile fabric that meets the specifications provided in OSSC 00350 (Geosynthetic Installation) and OSSC 02320 (Geosynthetics)for drainage geotextiles. The collector pipes should discharge at an appropriate location away from the base of the wall. Unless measures are taken to prevent backflow into the G EODESIGN? 13 BrownCald-49-04:03221 1 329 wall's drainage system, the discharge pipe should not be tied directly into stormwater drain systems. If wall drainage is not provided,we recommend designing the walls to withstand hydro- static pressures. 6.6 SEISMIC DESIGN CRITERIA 6.6.1 Base Shear Based on our investigation, the following design parameters can be applied if the facility is designed using NEHRP. The parameters in Table 4 should be used to compute seismic base shear forces. Table 4. IBC Seismic Design Parameters Parameter Short Period 1 Second Maximum Credible Earthquake Spectral Acceleration S,= 0.95 g S =0.34 g Site Class B Site Coefficient F = 1.0 F = 1.0 n v Adjusted Spectral Acceleration SM#=0.95 g SM =0.34 g Design Spectral Response Acceleration Parameters 0.63 g 0.26 g Design Spectral Peak Ground Acceleration 0.38 g 6.6.2 Liquefaction Liquefaction settlement is the result of seismically induced densification and subsequent ground settlement of near-surface loose soil. Relatively clean, loose sand below the groundwater table is particularly susceptible to liquefaction. Our subsurface explorations indicate that the soils at the site generally consist of silt and clay with gravel and cobbles overlying basalt bedrock. Based on the soil types encountered in our explorations and the results of our laboratory testing and analyses, it is our opinion that liquefaction is not considered a risk at this site. 7.0 LIMITATIONS We have prepared this report for use by Brown and Caldwell, the City of Lake Oswego, and members of their design and construction teams for the proposed project. The data and report can be used for bidding or estimating purposes, but our report, conclusions, and interpretations should not be construed as warranty of the subsurface conditions and are not applicable to other sites. Exploration observations indicate soil conditions only at specific locations and only to the depths penetrated. They do not necessarily reflect soil strata or water level variations that may exist between exploration locations. If subsurface conditions differing from those described are noted during the course of excavation and construction, re-evaluation will be necessary. The scope of CEO DESIG N V. 14 BrownCald-49-04:03221 1 330 our services does not include services related to construction safety precautions, and our recommendations are not intended to direct the contractor's methods, techniques, sequences, or procedures. Within the limitations of scope, schedule, and budget, our services have been executed in accordance with generally accepted practices in this area at the time the report was prepared. No warranty, express or implied, should be understood. ♦ ♦ • We appreciate the opportunity to be of continued service to you. Please call if you have questions concerning this report or if we can provide additional services. Sincerely, GeoDesign, Inc. Elliott C. Mecham, P.E. 4 r, Project Engineer ,err A }���� EXHRES: /f 012 Brett . Sh pto , P.E.,G.E. Principal Engineer GEODESIGM 15 BrownCald-49-04:03221 1 331 REFERENCES Beeson, Marvin H.,Tolan,Terry L., and Madin, Ian P., 1989, Geological Map of the Lake Oswego Quadrangle, Clackamas, Multnomah, and Washington Counties, Oregon, Oregon Department of Geology and Mineral Industries, GMS-59, scale 1:24,000. Madin, Ian P., 1990, Earthquake-Hazard Geology Maps of the Portland Metropolitan Area, Oregon: Text and Map Explanation, Oregon Department of Geology and Mineral Industries, Open-File Report 0-90-2, 21 p., 8 plates. Schlicker, Herbert G. and Finlayson, Christopher T., 1979, Geology and Geologic Hazards of Northwestern Clackamas County, Oregon, Oregon Department of Geology and Mineral Industries Bulletin 99, 79p. Snyder, Daniel T., 2008, Estimated Depth to Groundwater in Portland, OR, USGS Scientific Investigations Report 2008-5059, Plate 1. Wilson, Doyle C., 1998, Post-middle Miocene Geologic Evolution of the Tualatin Basin, Oregon, Oregon Geology,vol. 60, no. 5., p. 99-1 16. G EO DESlGNz 16 BrownCald-49-04:03221 t 332 FIGURES 333 334 ,.... . . ,r . . ..L. • --s- 7-, -1 ' ,----i- • t.V , ,:in. ‘. .'.-.' : ,t 0 1 P; ''' '': 4 tilt . ... fr..- ......1 ,,z. ea% t 4 : . , • , ...a: . ' — . ',frgifir , • .;% ..,... • ,Gt*t. ', A yeeiids. ..4 i4, rt , -,,, 4..Z." ••.. '4..„ ,i, • , •,''I.; t.-• •S' . ' ...i._ t • ..`"‘--'1 ' - , . " .:' AIN . . .•4, ., .A15 t . • ....0.7..10... . -,i: • ' ; ,d, ..11b0%•.'a. .''''• , ."..`" 1 . '. ' t. ' ,76•14, • `.tr;:',,ry, ..3• ."'- ' .,,, .:74,, ... ; -7,..i.- Oil ._:::' i', ,: ` ..@,t-R ' '.',.',,''' .1.","'• ' .* . ' " 7:,ve.. ,t_mr ZI':'''4 v.{-a lit i r' . 'illii:C';',74;2, ...'- g •". ...... ..•-- -it:,•••-• 1.;:-.'• oe, ..•,.... -.' ,,,.,_ 4‘.', .,..•••-, Pia, , . je.„,, 1 -. ,, .... tAr„. t, •--.2 AL..f7r-4.. - ' .... -...;, ii ' f '" , • ' ITO- ;', . ',I•..., F : '7C Vti. . A,-.,i,;.,.. :,.....6 4 ---- , ,,, _ .,, -44,.f • r!f•v.-' • . a tril 1., ...., . t. fi ft-li.'":!":".•71: . ..iv,a--itit ;. : i' :,. C. ' • ', . '.- " ',., 440--.1.,f-ir :t. , '•''''.. '17—i,.. . • -. k, r. ,.1-,..,:. •_ ..-_,. - .„ . . .,:.• -.. _,_ . ,• ,, : )1,•• . .r.,„ ..,./ , 4: ,, .1c;ri. AL '..' ‘'',1' ‘,‘''. ,,,"-k 444. .1`... . • .:':.i4- •' • . ''''', .'1 -,`f"L•it‘4.0:.- -t-. .' . VIVW"jtki " .;•-• ' % '''‘: 'I '. ^r S • Olg 1 . E alp '''''...'!" : "., -• .n.,.:1" 4:,L -, , ..,1 .,,,..-.':i.Ix , ' 4... '. .. • 4 .0-_, ,._."7.•,-.11.f. . ., ;4; ; .. , Mt 411,.._.1-4:,-.i,„;;,;.*„.•• 7, . c,- ,z,,...,t. , , .......114 3 -44 ..,, . • . ,,..voil: ..•;, : .,. ..*. ,... !, ,14,. -,.- -. .•.. \:. *:.,..'-- .::It: ;ft!, • .:j•• 4 f..-;:f1.-rUt...4 :-.;.;,.-i, . ,i: it ;, ,$1:1:4.!:47.,..,..„..,..,.. ::-: ., ;.,.,.. ,1„ ....t. ..r.: ..,..1.p : :.. ., ,..$:...-....s.r.., 4.,, ...-.....„,,,,,....-, ,. , = i . i . ..- A-:,,,,,,... - .,4-` ,...t9e....•:-St:MkArl- 4.1,,. - ' './. 'i •-r' -1;"' L,••• F--t-', 1 '''..:_ 'el. C7N-_ ,,„_1'11.1'ke: --'4.1/%. ‘e•- eks'i - ' •••••N-•,' 41 •J74 ' ...,.4,.„ _1 ' --.1.0 ,-:....tr-7---- ' ' ,, ,,,i,4.- 11,„iu.',, ... .. ,• *i- 0 s.' • Or- .•,-."- ,i;„, ,..6,4-(1,,g...„..,,..1,,,,,, ..,,,-t.4:A.-p.r..1-.,,,•-';,........ ' t ' ' t: % --'' , . , 4..?•',' ." se,"41' '1.1". ' ''',it‘,:,944.:',:.I...it. tzu-1711.,T;11 ,.".,P„;.,p, . ' ., .1,..,, ", .,,',-.. . -:.•2.• 1 PL.,.rY' .. - ..t. .(-.‘ ',vit . LY!7i4,,*, • .• .^. q-If-;12''',.-- iii-v. - " --f-,,yK,r Ve- '' -. - , , ,... . -0.-„,,,,, .., . n•-t 0. ,i, 14,_ - - . • - 4. / .-. ,,,,,,,17.47 t 2 •..i.,. . : .,, 0 .,, ., -ft -... . , .• ,„. ....-4„ - __,Ly--.4., , ., ., .• , .. -,.. ,i, 41 .ri-L,t.- 4+t,, ,..., ,. .. - .4. : I,_,.“.•'...„' .18.. ...__ t 15f ,..k.:,. • g 4.• til •lgrt•..a --..,.. 1 ,i1• t - 4.1.....:f..... -:-.-* .4. 0,, ..40. .. ...., . ..., -.:Il t -, ( , r,.: .0"-. . -- -• !'444- ..1•4;:-14 '... f'''• ' ''f:1: "'. v.' ".'' , ,...e4(t, ''!..- .,;1 . ,.....• s''V : P. .rrts....; . • . - -,•_.'.. , , e, .v..„., ,,,,_.1,r,.._ „ • .1 ... -. '11.6r_: —,,,, Sr *. 8 .., .k...vgcl , x _ .. , ..,,,.... . • 1,.., ' ,,,t41 ' -1 ,_,tt - -- 1 • r,....,- jir . , -? , .. __ ,,„__ •, •et • 1 4 •1 ., . - ,r. 1,...,, , .... .• ,f--... . _.. .. ...„, ..,,, , . .._.. , :!,.,.. .--, _.,. • 7. . I _ ._1-.. -:. , .- . ik . ,: •).:-- -....ks0 .„tir f,, .: „.; 1 .7-qe:, :Itt,,-,/•, „ , v„, ......; ; . ;,.iii: ',4 -111if — '"-7", , . ','- • A ,..,...„.......,.... .-.5,.. i• ttl,..0.--",;,74"-.,',„i ' „ff.' - 4' .- BnitadKoi • - -0- Y. -i•l,,, . . _‘..... -I, ffl742o `f. ,,,,,• 4--,%....- -A Y '-olt,',4a. ,is,,/w... .1, ;, 'It- ""64). ,••:' .'.,,:., • - -i".,..---, ..,- ) ED; 1 1 ,s'-`•7"C' *•"_, ,. ' • . -''-, . '-:-'tF.',0t,-,,,-• 7 4,7, 1''''' 1. .- "!'•:.' 1 " ,.. ....,4.,.. - .... - -..., V••••., '41!--.".:. , 1,-...:,- •-•• .,'" .‘,.;. . ,.. 111.11., . -4...f,,,,,P1 . _, v., , itr, ,:...• - ,, :..m, . i-cf),'(,(4 4. 7- % , ,-r.1 '-' 4-:, • -'1, -- - ..--.7 , -....,-...•.-. -,op -.. .-.- :„ -.K.- .4,:,..-0..,41 ..-- : . ... ' i-41.,c; 1. '." •`5.-jit.444:': 1 ', V4 . • - - .........., 3 '..•"'., c: , , • t - .: ,4"..... fietiVi 0`. ..-C fr„..t.f..xr ., -% ; 10., . r- , ;,.., .. ., . s .. i!.- ..0,.:. ' ' 11'.., • - ' " ' ' — - il„kt.,.".--.34 4'...::-• ' 4'7% . .. .4d -.1 i ilig'f:- '''''' . 4•,,4 ' - , 1* •., •'``. 1-' im_er-i__-..,,i'13,-; • . • 1 . .ir *Fe--4. '4 .'., ' i , t ' 1 " 47- A IV • -.' '. F.* "A- • ''"••• '''t ' ' 4 r - iit'. 5.." •,, .. •-• ....• ' . . '- • i ..iltrc,., ,. Isc1% . ".:.f ..r ik" ' ", '.i -1 .. n a i t 4,,, 0 at--- '-- '' , ,e,...„.•,......7- .A.....,,-..., ..._,,.„,o. -c-::. ,,.„ .'. . e.,27 , ` '` .1,t . 0e .1.0:99 ...11.°:' ,' • : ....t, • ii-i•-• --, " f.,, ' T,,, . , ,' .. Y.& • ...II. ::..n." • (.7 i :4•1,. ,! 44.11!F 4 , 0.• ... •' ...." 4, -4 - 1-.1.1, t,-, ./.v,,,4-.:...,:,,:-.-,1:.A " '11:1 ‘`',a,„it.., -"°3.,`. .;is' 3i , . A . i I/ r ty044 / ieriel .„. ,.r.-..f ,....4 li . ,...r•• 4*'.....1...4....41- , .4,......,- %Tyr; ,F.,.. A.1,,m:..,7.„ ,• .• .4. 'N.,t...e...,. •1 ,' , i *. :..,.) 'r.:!irl:4• 4,';;4,,If". ...:. t.N--- '-. ..,,,..4.• .,!", .. • 4-,.'4',•,-7- --•?I'''..44,1.1. r. .....„. ,1 . ,.. ,, •....„.,:. ...... , ..,., ..,4,_• . ,...--1-•42'..141-a• , ' ' .... .,Ni"1.'. g• I ..,,": . 3 . .A.. ,Trlii 1 r, . - . 1,1,4.7..-k.. ....---, mk,•4 .,,- . ..,,,,,,,t„. ., ',..4 • -,,. .,'. -'•'- • z".• .-3. , - 1 - i.---•-• .. •.„, , :mg -' , ‘, , -•tz - -.?. . . -4-+" ?;• • - , • , , At.7 11_11:; L" ‘' eir ' • ' .: t‘ 4 (40‘ - • I. 14,11r:.i ,,,, -f*,.4- ; %11•• .!. .,'.%.$14tr4ir -.v. _ ; 27 / •-V.....-_.•,i: ." • .1,..'.z,,It'.:,.,, "":-.1, r•'' ,y•;-..z..' g -3 ,Titr '-*a '/ --.1'=":: •C, , _1;a etthllu:'441! ,.,F' .i.' ,* . ..a.y ,, .4a7 ,i44',., .4, e,.0% iv,i.,4-...4. '• ' '''' +.,.% rip 1„„...1,,,i„.4.- Ali„, ar- Cell.., "...: .:.-",•:‘ ,. .,1.S. 1, .','-n4it.';,... 4. ...:4 ..• 44 i AJir71,4 ..,;4 t •. .' ' t /. • ' i,06,• '''' \'''r 10'4 4"'t c ...4 4 ....• :,,:„ffe: to* ,...:„ ,i,........1.. , . li , • • .i,,,,,%., ;$ 1.1 . r._:,... ..:.... . -.1‘t"I r.af-re4Vit ,..-••.f• „..1;A. , .. l'"•• . --,'- - / 4FLq.; • . A tt.'ri r'kt , .,-4-2:5, -E, . :i. . 4 - • - 11%. '—`•, • Jean..R-cl ,.:,,. ••••-4'.* ''7 "if' i N - -( . - —.CP „ r•-• t . ...., _ ..K • , . ..:„..! "•,„,:,-,f,-q., r ‹ ..:, :„..-r • or ._,fi , 4„ . ,,,... • 1. e 0„"' , u,„. Ar a .Age Q - .-., E '' • I ' •^. - t- I "in..•5'•'..-'-vii., . ..- r'''-: ,,„--- -• l'---: ,.:... ..0:,, . ,,,.,,,,,,,.,,., . ,._,,, , ,., .. , ,. ,,,4 .. ,,,. , t"... ., ,. ,,' - ..... v,...x..,..-17.- 1. .., ,.:.. , ,...Am' '',N i •.i••'•',' •-.. u ... .' • i'7,1.••••4%• i 0'' . ......`,1 2 VICINITY MAP BASED ON AERIAL 4... ,,( 0 2000 40007 f.......: t.,..,-; • ,-,,,y-,iii, .6:' 1,'-' I 1 PHOTOGRAPH OBTAINED FROM . .'4" 1 i':#.4,..„'-!°: ' 7!-',. ,../t 1 - .:1''' .1.. '--7,;- ' GOOGLE EARTH PRO® h- ,..-,.' w . .:.- • '. I.. t:-:lie. ". (SCALE IN APPROXIMATE FEET) -I ° .,:q ,.. -,.:, ,.,, 'igie,f7., .i -'...'W . - ,'AI.' "fg:Vt.1411. "'i4 44.r. '"117 71 t. 7 , It.,,.r .'E L•I tj'ALAUP,Iiiiiinellaitik *' I* • "..iilf:r' -.1.r- .i'..k.5 Yie.:...._:-Le‘4:r....71!•'-.irr.i..:.r...--.. C- .4itt-....* -4.,, -,-.-A-1 .-74- • '1.1....a.:-.... , _u - ., i G EODESIG NY BROWNCALD-49-04 VICINITY MAP .., 15575 SW Sequoia Parkway•Suite 100 co E MARCH 2011 PROPOSED WALUGA RESERVOIR -C1 ns Portland OR 97224 FIGURE 1 .<1..! . „ Off 503 968 3787 Fax 503 968 3058 LAKE OSWEGO, OR 335 9££ I Printed By:achy I Print Dare.3/222211 10,13,56 AM Flle Name:C.\DOCUME-1\adaylLOCALS-1\Temp\AcrublasM 2952\BrewnCald-49 04.C5010.rer01.dwg I Layow:FIGURE 2 1I fII API."'--11111:111, -/ R6 ��pf8 10", I I I f v I u J v 1 141 pe ( I j I ! ..' ,: 13--.14/0111111:40 4.et .., ,I,,g,.,.. �g79a0d o • .14 y, I �r : �� io Iirrilltk L s ---"' 4._ ...40. 1'4'''411141 ::- /I '''.." .. ' '. . 1 . , :\,... 4 .,.. . - - l' :. ' ' ;;.\ (7/',.../ /1 ) / . . /iR \ /II t. immi'''''''' il I/. ,_.ili D. . ,1 \'\.''.''1 k' •\.\',..-..‘:.\ h •/de . ." r-P'7 . :!: ..ill . i gl IA i iii —o > m CI o-0 m � 0w O Dz z - qi zp n g DA 0. I z Z z n z P.� Jrel/+IO 9ROWNCALD-49-04 SITE PLAN Isns swseya.r r.�,.,,e.m1a top L mmaaeoE ante MARCH 2O11 PROPOSED WALUCA RESERVOIR 01,505.966,9)e2 F. NI aose LAKE OSWEGO,OR FIGURE 2 1££ Noted By:achy I Print Date,3/22Ro111013,57 AM File Name:C-..\aOCVME-1\5.day\LOCALS-1\ramp Arpub11919_3$52\SrewnCald-99-o4.0.010.Fev0l,dwg I Layout.FIGURE ELEVATION(FEET) w o 6„ o 0 0 `Iy 4 .J 1 , 1 5, C1 t I 1 B-1 t I. 1 IV t 5 1 4' t 1 5 1 I ) B-4 I I I I i = 1 O C -P rr, N -I 0 1II 9 - r 1 -o —o 1 I 1 1 �n1 CA � I n D 1 m m I I I 13-6 i -Of 2 '0 I . i 1 m T m 1 O }I r< 1 D C I < l 3Mm1 n 1 2 G 1 J_oo -I 0 11 pa Om FT.! P `.'z� ,p s 1 r 7m-< 1 7i:{ =Px 1 n NI . ido ozb mZ mj I 1I L... , DN0 -1-I 1 x-m0 z� Z ''[[ Z-<P `,,p1 01^-II.- ;y0� 1r 0 b 3 2 11� rg l 1 ATO 1 2 O 5 \ `-P^ I \ rn p{ I 0 I I 1 r 0 4 s r 1 -4 1I 1 I 1 B•ll 1 \ N b w0.0 O 00 n O In O O0 O ELEVATION(FEET) NINDESIGNY EROWNCALD-49-04 CROSS SECTION AA' 15575501 Seµ 01.100 my 500 100 Portland Oa 97214 PROPOSED WA!UGA RESERVOIR Oo1al,9saeaay Fae503.9603o0e MARCH 2011 FIGURE 3 LAKE OSWEGO,OR 8££ Printed 9y:aday I Print Cale:3/22/20111 Ott 352 AM Ale Name:C)OOCUME-1\aday 1,LOCALS-1\Temp\/.dublish 3952\RPawnCald-49-04-05010-resOl.dWg I Layout'FIGURE4 ELEVATION(FEET) o , o w o ,„„ o M F I 6-5 1 L 1 \, f S 3 I L a z , Le,O ♦♦\♦ 11 r q-1Z m N ,m 'V♦ 1 t7Q A o z I oa -Z `anti • 3`vZ �2 rn n n ° � O i am 3c 1 yL, 2 A J, W C5 73 a Y vI .n-. .n, p {� 1 '� D D O m 1` a r m m N Ft I -1< Is1Z _' - o r3O B-4 rn T rn m ,. Iq J O - j ` 7. m 1 aIW1 I no I , Li0y 1 D I 1 � 4 _. y 1 1 I I 1 I !7 r .L I i 8.2 / N w a .„ o a o 3' 4, 4- O ELEVATION(FEET) MU!GNi BAOWNCALD-49-04 CROSS SECTION B-R' 16826 SW Sequoia.Parkway-sulk lea Pwrtlma 0a MN MARCH 2G11 PROPOSED WALUGA RESERVOIR on sal 9se epee Flu'a03.968.3088 LAKE OSWEGO,OR FIGURE 4 LA W a U 7. C_CI 310 310 �. 305 A-A' 305 U -cp L s T U O mSTIFF,BROWN,GRAVELLY CLAY(CL) m G z 300 WITH COBBLE-SIZED BASALT__--7''+ a �_--- MEDIUM DENSE TO DENSE GRAVEL \ 300ee F- (GP-GM)WITH SILT,SAND,AND - d v e 7---_a_ - �__� w -? BASALT COBBLES AND BOULDERS \ U .y o ~ ,� 5 MEDIUM HARD TO VERY HARD(R3 TO RS) 295 BASALT;MODERATELY TO SLIGHTLY �s�- 295 WEATHERED,MODERATELY TO SLIGHTLY ;_"-, (COLLUVIUM) a FRACTURED WITH ZONES OF INTENSE \n 's _ d E FRACTURING -\ _, 290 7----?----�__ _ \ 290 O a (BORING LAVA) -� VERY SOFT(El)BASALT;INTENSELY WEATHERED,FRACTURED _ w EXTREMELY SOFT(RO)`, LL BASALT;DECOMPOSED, - 285 g. -_�--- VERY INTENSELY FRACTURED ` 4 �� ao 280 28a - EXTREMELY SOFT(RO)SILTSTONF; o N INTENSELY WEATHERED TO u d DECOMPOSED,INTENSELY TO Ls z a _ MODERATELY FRACTURED - 2 € 275 275 4 5 270 270 E MI g ry g L7 a M 0 30 60 o a HORIZONTAL / 1 CV I 2 (SCALE IN FEET) sa. 0 6 12 I.:I $ 9 E VERTICAL ' (SCALE IN FEET) W W CD W 411. m W D D' ce L7 310 LL 3)0 305 co 305 - - - — mA-A'1 — _ `I 6 O--a _ — — d. m! r (COLUVIUM) _—_ — —�— 340 __ 300 O ed —_7 — uJ w �'`. MEDIUM STIFF,SANDY CLAY(CL)WITH SOFT TO HARD(R2 TO R4) p a o EXTREMELY SOFT „' GRAVEL/MEDIUM DENSE TO DENSE, W (RO)SILTSTONE;- BASALT;MODERATELY U 293 SILTY GRAVEL(GM)WITH SAND,AND WEATHERED,INTENSELY TO a'^ DECOMPOSED, . BASALT COBBLES AND BOULDERS MODERATELY FRACTURED 295 o INTENSELY o FRACTURED, ',, o INTERBEDDED " WITH SANDSTONE (BORING LAVA)..., LL r0 290 3.7 290 O EXTREMELY SOFT(RO) w SILTSTONE;INTENSELYY`'� w WEATHERED, w 285 MODERATELY FRACTURED <<' 285 5 74.— i 280 7'i 280 4 v b o a < = 275 275 z - o S 270 270 �5 0 30 60 HORIZONTAL I yNl.T. (SCALE IN FEET) Z_s m. 7.3 0 6 12 o VERTICAL 1 ' © `e` (SCALE LN FEET) a 1* z Z E 10.0 • • 9.0 I I I I I I I ! ! 8.0 7.0 — I ! I i I I I I I I i ! 6.0 — i h i I I I I I i i I i I ! I I 5.0 --- 1 I I I 4.0 1 ABOVE RECOMMENDED THRESHOLD 3.0 I I I I I i I 2s0 IN/SEC I G 2.0 I I I II I I i . I I Ii l i l I I I II ! I I I ! } /! I I 0 1.0 0.75 IN/SSEC I l l i !--1 0.9 DRYWALLI L.,, 0.8 I ( 1 I v 0.7 1 i l ! I a-. cccc 0.6 I 0;5 IN/SEC; I i 1 a PLASTER 7 I I I ! II I 0.1 1 I I i c I ! ! I 0.3BELOW RECOMMENDED THRESHOLD0.2 I I I I 0.1 1 2 3 4 5 6 7 8 910 20 30 40 50 60 708090 FREQUENCY(Hz) a, V 2 v a 7 ,i L.'3 m ° o i - s ._ v o b • U n c o M ti u w v C] U t c 3 ▪ a a i— ❑ G EODESIGNY BROWNCALD-49-04 U.S. BUREAU OF MINES VIBRATION DAMAGE CRITERIA m• E 15575 SW Sequoia Parkway-Suite 100 - z Portland PROPOSED WALUGA RESERVOIR FIGURE 7 I c „ off 503.968.0757 Fax 503,958.30613 MARCH 2011 LAKE OSWEGO, OR a 341 35 PSF IL 55 PSF �1 �1 ❑ 0 2 18 PSF 29 PSF 62.4 PSF 1 1 1 A cr- �, C7 si 0 Pha Pho Pw s EXPLANATION: Pw = 62.4 (H-Dw) PSF u Pha = 35 (Dw) + 18 (H-Dw) PSF Pho = 55 (Dw) + 29 (H+Dw) PSF g- Q GROUNDWATER LEVEL a u NOTES: 1. Pha FOR USE WHEN WALL IS FREE TO ROTATE ABOUT BASE. vr 2. Pho FOR USE WHEN WALL IS RESTRAINED AGAINST MOVEMENT. u 3. FIGURE SHOULD BE USED IN CONJUNCTION WITH REPORT TEXT. a 4. EARTH PRESSURES ARE UNFACTORED. o . 5. FIGURE DOES NOT INCLUDE LATERAL EARTH PRESSURE INDUCED BY SEISMIC SURROUNDING LOADS. 6, SURCHARGE EFFECTS FROM TRAFFIC, CONSTRUCTION EQUIPMENT, STOCKPILED SOIL, ETC. SHOULD BE ADDED • u TO THE ABOVE DESIGN PRESSURES. • C � a m m t]• V a_— LATERAL EARTH PRESSURES FOR G EODESIG N= BROWNCALD 49 04 BELOW-GRADE STRUCTURES IN SOIL AND SOFT ROCK ro▪ „ 15575 5W Sequoia Parkway-Suke 100 rt PonlandOR97224 PROPOSED WALUGA RESERVOIR zMARCH 2011 FIGURE 8 c „ off 503.968.8787 Fax 563_968_3068 LAKE OSWEGO, OR • = 342 c 1 5 PSF 1 � a 62.4 PSF 1 - u w A or Pha Pw 9 0• V FO EXPLANATION: Pw = 62.4 (H-Dw) PSF 3 Pha = 1 5(H) o V GROUNDWATER LEVEL u NOTES: 1. Pha FOR USE WHEN WALL IS IN MEDIUM HARD (R3)TO HARD (R5) BASALT. b 2. FIGURE SHOULD BE USED IN CONJUNCTION WITH REPORT TEXT. a 3 3. EARTH PRESSURES ARE UNFACTORED. a 4. FIGURE DOES NOT INCLUDE LATERAL EARTH PRESSURE INDUCED BY SEISMIC SURROUNDING LOADS. o 5. SURCHARGE EFFECTS FROM TRAFFIC, CONSTRUCTION EQUIPMENT, STOCKPILED SOIL, ETC. SHOULD BE ADDED TO THE ABOVE DESIGN PRESSURES. rq O R L) t.N � O m m t+ 17 ❑ G O m b u BROWNCALD 49 04 LATERAL EARTH PRESSURES FOR BELOW-GRADE G EoDESIGN? STRUCTURES IN MEDIUM HARD TO HARD ROCK m 15575 SW Segnola Parkway•Syrte 100 _ • z Portland OR97224 PROPOSED WALUGA RESERVOIR FIGURES = m Off 503.9688787 Fort 503.968.3068 MARCH 201 T LAKE OSWEGO, OR 343 w •, Printed By:aday I Print Date: 3/22/201 110:04:14 AM File Name:):\A-7\BrownCald\BrownCald-491,BrownCald-49-04\Figures\CAD\BrownCald-49-04-DET03.dwg 1 Layout:FIGURE 10 h -- X=mH 17lam— X=mH POINT LOAD, Qp LINE LOAD,Q L a STRIP LOAD,q i-t- * *'!.%-..'!.r, A '''.e..f.e. ''';:*":".1" A .«-?. 001.47P-fte/2 Z=nH Z=nFl L 1' i EV i IW H lir H W H Ilir Or F ah ahOr an ��\ FOR m<0.4= �f\ FOR m<0-4= ��� a=S (�-SIN13 COS 2a) ��f�\* ah _ 0.28 t7 1,�� Q QL 0.2 n /�\' 3-14 ' ' '\1������ H 2 (0.16+ ��'\\\�f\\��� h H (0.16+t� \\•\\•\\�\���ff f /• 49 AND a IN RADIANS) FOR m>0.4= FOR m>0.4= a =_9_2_ i.77m2 r? QL 1.28m2 n h H2 (m2+n2)3 a ` z H (m +rr- LINE LOAD PARALLEL TO WALL STRIP LOAD PARALLEL TO WALL -t- Rill' x=j mH a =ah Cosz(I.1 0) (43 IN DEGREES) NOTES: , 1 1. THESE GUIDELINES APPLY TO RIGID WALLS WITH POISSON'S RATIO a ASSUMED TO BE 0.5 FOR BACKFILL SOILS, WHICH IS APPROPRIATE FOR DISTRIBUTION OF HORIZONTAL PRESSURES MATERIALS PREPARED IN ACCORDANCE WITH RECOMMENDATIONS FOUND IN OUR REPORT. VERTICAL POINT LOAD 2. LATERAL PRESSURES FROM ANY COMBINATION OF ABOVE LOADS MAY BE DETERMINED BY THE PRINCIPLE OF SUPERPOSITION. G[ODESIGNU BROWNCALD-49-04 SURCHARGE-INDUCED LATERAL EARTH PRESSURES 15575 SW sequoia Parkway-Suite 100 Panland OR 97224 MARCH 201 T PROPOSED WALUGA RESERVOIR FIGURE 10 Off 5U3-96811787 Fax 503.968.3068 LAKE OSWEGO, OR BrownCald-49-04-F11_I2,doc Print Date: 3/21/11 Horizontal Pressure Ratio (Horizontal Pressure/Tank Surcharge Pressure Pressure) 0 0.05 0.1 0.15 0.2 0.25 0 1 s 2 4 6 —0.5 Foot From Tank u1 Foot From Tank 00 2 Feet From Tank 0.1 g14 ----3 Feet From Tank s —5 Feet From Tank 10 Feet From Tank 10 —20 Feet From Tank 12 14 i 16 u HORIZONTAL PRESSURE FACTORS FROM THE PROPOSED RESERVOIR ON G EQDESIGN BROWNCALD-49-04 BELOW-GRADE WALLS IN UNDISTURBED SOILS OR STRUCTURAL FILL W I5575SW Sequoia Parkway-sune100 PROPOSED WALUGA RESERVOIR 41. Portland OR 97224 MARCH 2011 FIGURE 11 Off 503,968.8787 Fax 503.9683068 LAKE OSWEGO, OR w BrownCald-49-04-F1 1_l 2.doc Print Date: 3/21/7 I Horizontal Pressure Ratio (Horizontal Pressure/Tank Surcharge Pressure Pressure) 0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0 2 'Lmhihiiiii.....__---""'""IIIIIIIIIIIIIIIII"1"IlliIllillIllIllIll11111111111111ft.— i N 4 miiiiiii 6 i kl•h 6 0.5 Foot From Tank 1 u 1 Foot From Tank _i 1 m «. 2 Feet From Tank NI 4 i 6 hi, d `• 8 3 Feet From Tank t 5 Feet From Tank c. 0°J — 10 Feet From Tank 10LI1. —20 Feet From Tank 12 14 IlaiMML‘a I . II 16 - i V HORIZONTAL PRESSURE FACTORS FROM THE PROPOSED RESERVOIR ON G E4DESIGN? BROWNCALD-49-04 04 BELOW-GRADE WALLS IN MEDIUM HARD TO HARD ROCK 15575 SW Sequma Parkway-Suite 100 Poniard oRsrzza MARCH 201 1 PROPOSED WALUGA RESERVOIR Off 503.968.8787 Fax 593,968.3068 LAKE OSWEGO,OR FIGURE 1 Z Printed By: aday Print Date: 3/22/201 110:06:04 AM File Name:J:\A-D\BrownCald\BrownCaid-49\BrOwnCald-49-04\Figures\CAD\BrownCald-49.04-DET05.dwg L Layout:FIGURE 13 2.0' MINIMUM `o d a H / W Z a w 4; vHi 0 U Q J ., W Vl W J Z rsi Q Q a W W Q LL LY H WATERPROOF Z O `" EMBEDDED WALLS c.riO2 �� \ DRAIN ROCK p H Q a GEOTEXTILE O O m LL b ❑ VAULT FLOOR N O 6n DIAMETER • • PERFORATED PIPE 1 • • BASE GRAVEL (NOT TO SCALE) GEODESIGNz BROWNCALD-49-04 EMBEDDED WALL DRAIN DETAIL 1 5575 SW Sequoia Parkway Suite 10.6 Portland OR 97224 PROPOSED WALUGA RESERVOIR Off 503.968,8787 Fax 503.968.3068 MARCH 2011 FIGURE 13 LAKE OSWEGO, OR 348 APPENDIX A 349 350 APPENDIX A FIELD EXPLORATIONS GENERAL We explored subsurface conditions at the site by completing 11 borings (B-1 through B-11). The borings were advanced to depths varying between approximately 14.8 and 30.5 feet BGS between June 9 and 14, 2010 by PLI Systems of Hillsboro, Oregon, using hollow-stem auger drilling methods and HQ and NQ wire line coring techniques. The locations of our exploration are shown on Figure 2. The locations of the explorations were surveyed in the field by Westlake Consultants. SOIL AND ROCK SAMPLING A member of our geological staff observed the explorations. We obtained disturbed soil samples and rock cores from the explorations for geotechnical laboratory testing. Classifications and sampling intervals are shown on the exploration logs included in this appendix. SPTs were completed in the overburden soils in some borings. Samples were obtained using a 1.5-inch-inside diameter, split-spoon sampler in general accordance with ASTM D 1586. The split-spoon samplers were driven into the soil with 140-pound cat-head hammer free-falling 30 inches. The samplers were driven a total distance of 18 inches. The number of blows required to drive the sampler the final 12 inches is recorded on the exploration logs, unless otherwise noted. In addition, approximately 30-to 50-pound bulk samples were obtained in the upper 2 feet of several borings using a shovel and pick in order to obtain more representative samples of the upper colluvial soils. Rock was cored continuously using NQ and HQ wire line rock coring methods in general accordance with ASTM D 2113-99. Percent core recovery and RQD are noted on the exploration logs. ROD is determined by summing the length of intact pieces of core longer than 4 inches and dividing by the length of the core advance. SOIL AND ROCK CL4SSIFICATION The soil and rock samples were classified in the field in accordance with the"Exploration Key" (Table A-1), "Soil Classification System"(Table A-2), and"Rock Classification System"(Table A-3), which are included in this appendix. The exploration logs indicate the depths at which the soil and rock characteristics change, although the change actually could be gradual. If the change occurred between sample locations, the depth was interpreted. Classifications and sampling intervals are presented on the exploration logs included in this appendix. Photographs of the rock cores are also included in this appendix. LABORATORY TESTING CLASSIFICATION The soil samples were classified in thelaboratory to confirm field classifications. The laboratory classifications are presented on the exploration logs if those classifications differed from the field classifications. ®DESIGNS A-1 BrownCald-49-04:032Z11 351 MOISTURE CONTENT We determined the natural moisture content of selected soil samples in general accordance with ASTM D 2216. The natural moisture content is a ratio of the weight of the water to soil in a test sample and is expressed as a percentage. The moisture contents are presented on the exploration logs included in this appendix. ATTERRERG LIMITS The plastic limit and liquid limit(Atterberg limits) of a selected soil sample was determined in accordance with ASTM D 4318. The results of the tests are presented in this appendix. GRAIN-SIZE TESTING A fines content determination was completed on a selected SPT sample in general accordance with ASTM D 1 140. The fines content is the weight of particles passing the U.S. Standard No. 200 Sieve expressed as a percentage of the total dry weight of the samples. Three sieve analyses were also performed in general accordance with ASTM C 136 and ASTM C 117. The testing included two sieve analysis on bulk samples and on a sample obtained from an SPT sampler. The results of the sieve analyses are presented in this appendix. G EO DESIG N= A-2 BrownCald-49-04:03 221 1 352 SYMBOL SAMPLING DESCRIPTION 111 Location of sample obtained in general accordance with ASTM D 1 586 Standard Penetration Test with recovery kl Location of sample obtained using thin-wall Shelby tube or Geoprobe® sampler in general accordance with ASTM D 1587 with recovery Location of sample obtained using Dames & Moore sampler and 300-pound hammer or pushed with recovery I Location of sample obtained using Dames & Moore and 140-pound hammer or pushed with recovery 1 Location of sample obtained using 3-inch-O.D. California split-spoon sampler and 140-pound hammer XLocation of grab sample Graphic Log of Soil and Rock Types ,: . ..Il Observed contact between soil or Rock coring interval ,:r', rock units {at depth indicated) EZ Water level during drilling ` Inferred contact between soil or rock units (at approximate `/ depths indicated) Y Water level taken on date shown • . ' a• •1 4'. GEOTECHNICAL TESTING EXPLANATIONS ATT Atterberg Limits PP Pocket Penetrometer CBR California Bearing Ratio P200 Percent Passing U.S. Standard No. 200 CON Consolidation Sieve DD Dry Density RES Resilient Modulus DS Direct Shear SIEV Sieve Gradation HYD Hydrometer Gradation TOR Torvane MC Moisture Content UC Unconfined Compressive Strength MD Moisture-Density Relationship VS Vane Shear OC Organic Content kPa Kilopascal P Pushed Sample ENVIRONMENTAL TESTING EXPLANATIONS CA Sample Submitted for Chemical Analysis ND Not Detected P Pushed Sample NS No Visible Sheen PID Photoionization Detector Headspace SS Slight Sheen Analysis MS Moderate Sheen ppm Parts per Million HS Heavy Sheen G ESDESIGN? EXPLORATION KEY TABLE A-1 15575 SW Sequoia Parkway-Suite 100 Portland OR 97224 Off 503.968.8787 Fax 501 968 3068 353 RELATIVE DENSITY-COARSE-GRAINED SOILS Relative Density Standard Penetration Dames&Moore Sampler Dames& Moore Sampler _ Resistance (140-pound hammer) (300-pound hammer) Very Loose 0-4 0- 11 0-4 Loose 4- 10 11 -26 4- 10 Medium Dense 10- 30 _ 26-74 10- 30 Dense 30- 50 74- 120 30- 47 Very Dense More than 50 More than 120 More than 47 CONSISTENCY- FINE-GRAINED SOILS Consistency Standard Penetration Dames& Moore Sampler Dames&Moore Sampler Unconfined Compressive Resistance (140-pound hammer) (300-pound hammer) Strength(tsf) Very Soft Less than 2 Less than 3 Less than 2 Less than 0.25 Soft 2 -4 3-6 2 - 5 0.25 -0.50 Medium Stiff 4-8 6- 12 5 -9 0.50- 1.0 Stiff 8- 15 12 -25 9- 19 1.0-2.0 Very Stiff 15 -30 25 -65 19- 31 2.0-4.0 Hard _ More than 30 More than 65 More than 31 More than 4.0 PRIMARY SOIL DIVISIONS GROUP SYMBOL GROUP NAME CLEAN GRAVELS GW or GP GRAVEL GRAVEL (< 5%fines) (more than 50%of GRAVEL WITH FINES GW-GM or GP-GM GRAVEL with silt coarse fraction (z 5%and s 12%fines) GW-GC or GP-GC GRAVEL with clay COARSE GRAINED retained on GRAVELS WITH FINES GM silty GRAVEL SOILS No- 4 sieve) (> 12%fines) GC clayey GRAVEL GC-GM silty, clayey GRAVEL (more than 50% CLEAN SANDS retained on SAND (<5%fines) SW or SP SAND No. 200 sieve) - (50%or more of SANDS WITH FINES SW-SM or SP-SM SAND with silt coarse fraction (>_ 5%and_< 12%fines) SW-SC or SP-SC SAND with clay passing SANDS WITH FINES SM silty SAND No. 4 sieve) (> 12%fines) SC clayey SAND - SC-SM silty, clayey SAND ML SILT _ FINE-GRAINED CL CLAY SOILS Liquid limit less than 50 - CL-ML silty CLAY (50%or more SILT AND CLAY OL ORGANIC SILT or ORGANIC CLAY passing MH SILT No. 200 sieve) Liquid limit 50 or CH CLAY greater OH ORGANIC SILT or ORGANIC CLAY HIGHLY ORGANIC SOILS PT PEAT MOISTURE ADDITIONAL CONSTITUENTS CLASSIFICATION Secondary granular components or other materials Term Field Test such as organics, man-made debris,etc. Silt and Clay In: Sand and Gravel In: very low moisture, Percent Fine-Grained Coarse- Percent Fine-Grained Coarse- dry dry to touch Soils Grained Soils Soils Grained Soils moist damp,without < 5 trace trace < 5 trace trace visible moisture 5- 12 minor with 5 - 15 _ minor minor wet visible free water, > 12 some silty/clayey 15 - 30 with with usually saturated > 30 sandy/gravelly sandy/gravelly G EODESIGN= 5575 SW Sequoia Parkway-5��e,00 SOIL CLASSIFICATION SYSTEM TABLE A-2 Portland OR 97224 Off 003,948.8787 Fax 503.958.3008 '354 HARDNESS DESCRIPTION Extremely Soft(RO) indented by thumbnail Very Soft(R1) Can be peeled by pocket knife or scratched with finger nail Soft(R2) Can be peeled by a pocket knife with difficulty Medium Hard (R3) Can be scratched by knife or pick Hard (R4) Can be scratched with knife or pick only with difficulty Very Hard (R5) Cannot be scratched with knife or sharp pick WEATHERING DESCRIPTION Decomposed Rock mass is completely decomposed Predominantly Decomposed Rock mass is more than 50%decomposed Moderately Weathered Rock mass is decomposed locally Slightly Weathered Rock mass is generally fresh Fresh No discoloration in rock fabric JOINT SPACING DESCRIPTION Very Close Less than 2 inches Close 2 inches to 1 foot Moderate Close 1 foot to 3 feet Wide 3 feet to 10 feet Very Wide Greater than 10 feet FRACTURING FRACTURE SPACING Very Intensely Fractured Chips and fragments with a few scattered short core lengths Intensely Fractured 0.1 foot to 0.3 foot with scattered fragments intervals Moderately Fractured 0.3 foot to 1 foot with most lengths 0.6 foot Slightly Fractured 1 foot to 3 feet Very Slightly Fractured Greater than 3 feet Unfractured No fractures HEALING DESCRIPTION Not Healed Discontinuity surface, fractured zone, sheared material or filling not re-cemented Partly Healed Less than 50%of fractured or sheared material Moderately Healed Greater than 50%of fractured or sheared material Totally Healed All fragments bonded G EO DESy O ROCK CLASSIFICATION SYSTEM TABLE A-3 15575 SW Sequoia Parkway-Sune 1 O0 Portland OR 97224 Off 503.9688787 Fax 503.968.3058 355 F_ Z u A BLOW COUNT INSTALLATION AND DEPTH u Q 0- - M MOISTURE CONTENT% COMMENTS FEET a MATERIAL DESCRIPTION w o I 2 w h < �1 RQD% I771 CORE REC% U 302.0 i 50 100 —o_a _aa FOREST DUFF (8 inches, 3-inch-thick root -77 zone). J_ 30.91 -o Dense, gray and brown, fine to coarse, silty GRAVEL with sand and cobbles 2.5 p7P (GM); wet, subangular(colluvium). SIEv r -- -36 0 • QO :O .. 5.0 0?�S _ 296.2 P200 ■ �0 50/34, P200=9% 1111 Medium hard (R3), gray, BASALT; slightly 5 6 - I II to moderately weathered, slightly to _ I II moderately fractured (random, rough, 7.5 I I open with clay and secondary mineral 1 I filling, partly healed), fine grained with 1 1 1 i III I I I - i olivine and plagioclase crystals, vesicular } ��J�}�i� yJ��i1 _I �1 (10 to 20%) (Boring Lava). to.a— I I becomes medium hard to hard (R3-R4), uc J 1 slightly weathered, fractures - uc=11,670psi l I I predominately oriented 40'to 50' and -III 80' at9.0feet "I II I II 1z.s— I I fracture zone at 12.5 feet 2))) )1)i.')Iz////f _ III _111 rll 15.0—I 11- 1 I1 - I II I Ii uc ((I! 11I [[ 4' iI ff��17.5— i it � /92)1)9> '1))) lira uC=15,621 psi I - I I� -I -I I� 20.0 - 282.0 Exploration completed at a depth of 24-0 20.0 feet. 22.5— H Z _ 25.0— I- 0 U - z _ ❑ 2 27.5— - 30.0 0 50 100 DRILLED BY:PLI Systems Inc. LOGGED BY:CLR COMPLETED:06/09/10 U O BORING METHOD:hollow-stem auger and HO rock coring(see report text) BORING BIT DIAMETER:4-inch g G EODESIGNZ BROWNCALD-49-04 BORING B-1 z 15575 5W Sequoia Parkway-Suite 100 Portland OR 97224 MARCH 201 1 PROPOSED WALUGA RESERVOIR Off 503.968.8787 Fax 503.968.3068 LAKE OSWEGO, OR FIGURE A-1 356 Z o 2 H U w A BLOW COUNT INSTALLATION AND DEPTH v a a- —Z - •MOISTURE CONTENT% COMMENTS FEET a MATERIAL DESCRIPTION >w I- 2 J w Q l�l RQD% CORE REC% w I— N 301.0 0 50 100 —0 0 , u FOREST DUFF(4 inches, 2-inch-thick root 300s oC7.0 `zone). �r 0.5 -:obi Medium dense, dark brown, silty _e;oc GRAVEL with cobbles and boulders (GM); 2.5 �5 moist to wet (colluvIUm). ,_258.5 6-5010"A 2.5 - I 1 Medium hard to hard (R3-R4), gray, - 1 Il BASALT; moderately to slightly - II weathered, moderately to intensely - II fractured (random, rough, open with clay 1) 7//,(//71 5.0— I1] filling, predominately oriented 45°to - I S5°),with planar joints open with oxide ll filling and orientated 80', fine grained - I with olivine and plagioclase crystals, _ vesicular (10 to 20%) (Boring Lava). 7.5— I becomes moderately fractured at 7.0 uc 1 feet UC=12,452 psi - I - I yiJ1)J2 Y/1) .././ 10.0— I - I 12.5- i _ J1)1)}i /J%)//.///// _ I - I - I ls.o— I I becomes moderately to intensely ,DY,*51,2)71777/77//i fractured at 1 5.0 feet 283.8 17.5— Exploration completed at a depth of 17.3 — 1 7.3 feet. 20.0— I- y 22.5-- M I- z z 25.0— z O• 27.5— u - a O - 0 30.0 0 50 100 0 DRILLED BY:PLI Systems Inc. LOGGED BY:CMG COMPLETED:06108110 U O BORING METHOD:hollow-stem auger and NQ rock coring(see report text) BORING BIT DIAMETER:2.5-inch 2 G EQDESIGN? BROWNCALD-49-04 BORING B-2 .7 15575 SW Sequoia Parkway-Suite 100 PROPOSED WALUGA RESERVOIR Portland OR 97224 MARCH 2011 FIGURE A-2 Off 503.968.8787 Fax 503.968.3068 LAKE OSWEGO, OR 357 z Oo O z a w o •BLOW COUNT INSTALLATION AND DEPTH u ¢a — - •MOISTURE CONTENT% COMMENTS FEET ± MATERIAL DESCRIPTION w g __1 I 1Q ® RQD% F7]CORE REC% U 297.0 0 50 100 —0.0 u 4 4� FOREST DUFF(6 inches, 3-inch-thick root zone). 296 Z Medium , , , - silty GRAVELdense withbrown cobblesfine(GM);to moiscoarset 2.5-'_' , to wet, subangular to subrounded (colluviurn). — boulder from 4.0 to 5.0 feet ///°/////�' 5.0 --- _291.5 Miner's Comment:soft _ I Very soft (R1), brown to gray-brown, 5.5 drilling from 5.0 to 5.5 feet III BASALT; decomposed to intensely _ III weathered, intensely fractured (random, 7.5_ I I I irregular, rough, open with oxide and _ 1 I 1 clay filling, predominately oriented 40' 2I)) i/r!/ilri/7J III to 7 ), fine crystals, esh vesicue and lar to - III plagioclase ( 40%) (Boring Lava). 10.0 -;I, becomes soft (R2), gray; moderately Uc UC=2,74fipsi _I I weathered at 9.5 feet III - _ I I I becomes moderately fractured at 11.0 III feet its— 111 _ II 15.0 I I I _- 11 Ill - 17.5—-f I I becomes moderate to intensely Ifractured with abundant horizontal 111 mechanical breaks, vesicles form I I I I II _ horizontal flow-banding within rock J�����iii�fi�iri�f structure creating weak planes and 20.0—i I 1 mechanical breaks, less vesicular(20 to _Ill 30%) at 17.0 feet I.I . 276.9 - Y Exploration completed at a depth of 27 0 21.0 feet. z. N 22.5— m • a i - z a 25.0- 1 u z u w o E 27.5— E a U. - m 0 30.0 d, 0 50 100 I U DRILLED BY:PLI Systems Inc. LOGGED BY:CMG COMPLETED:06/10/10 Z O BORING METHOD:hollow-stem auger end NQ rock coring(see report text) BORING BIT DIAMETER:2.5-inch ce co z° G E QDESIGNu= BROWNCALD-49-04 BORING 8-3 m 15575 5W Sequoia Parkway-Suite 100 Portland OR 97224 MARCH 2011 PROPOSED WALUGA RESERVOIR Off 503.568.8787 Fax 503,968.3068 LAKE OSWEGO,OR FIGURE A-3 358 z o _ w •slow COUNT INSTALLATION AND DEPTH v Q a Z - r MOISTURE CONTENT% COMMENTS FEET a MATERIAL DESCRIPTION >pc, w Q MT1 RQD% 1771 CORE REC% K w I— t1 U 302.0 0 50 10D —0.0 ..• 2x FOREST DUFF(8 inches, flinch-thick root J zone). ^3a1.o _•V„, Medium dense to dense, gray and ''° o�7 brown, silty GRAVEL with cobbles (GM);2.5 .'�', moist to wet (colluvium). �- g 2.5 Medium hard to very hard (R3-R5), gray _ BASALT; moderately weathered, 1 r I i t I moderately fractured (random, irregular, //)))9)2iiifiiid rough, open with clay filling, uc 5.0— I predominately oriented l 0`, 25`, 45°, and L • . uc=16,624 psi I 55°), fine grained with olivine and - -I plagioclase crystals, vesicular(5 to 10%) -I (Boring Lava). 1 becomes slightly weathered, slightly 7.5— fractured at 6.0 feet i I JS1tI1 )I1)),9M i I • - I • •- -I - 10.0—I with planar fractures, predominately oriented 70° to 85' at 10.0 feet - I - I sIY)99Mi l)9)/f7,./ 12.5— - I uc -11 287 3 — UC=14,870 psi 15.0— Exploration completed at a depth of 14.8 14.8 feet. 17.5— 20.0— 1- Y C 22.5— W 1- Q o z _ a 25.0— 1- ❑ z _ u E 10 O 27.5— u - m 0 30.0 0 50 100 v d 8 DRILLED BY:PLI Systems Inc. LOGGED BY:CLR COMPLETED:06/10/10 z 0 BORING METHOD:hollow-stem auger and HD rock coring(see report text) BORING BIT DIAMETER:4-inch a oo o z BROWNCALD-49-04 BORING B-4 z G EDQESIGN- m 15575 SW Sequoia Parkway-Suite 100 PROPOSED WALUGA RESERVOIR Portland OR 97224 MARCH 2011 FIGURE A-4 Off 503.968.8787 Fax 503.968.3068 LAKE OSWEGO, OR 359 Z o - z J ♦BLOW COUNT INSTALLATION AND DEPTH 0. MATERIAL DESCRIPTION w •MOISTURE CONTENT% a COMMENTS < IT T1 RQD% l�CORE REC% Ce w U 302.0 D 50 100 —0.0 FOREST DUFF(6 inches, 4-inch-thick root o y zone). �- 30082 o6, Medium dense to dense, gray and Boulder from 1.Oto3.0feet '0'c brown, silty GRAVEL with cobbles and zs�o � boulders (GM); moist to wet (colluvium). _ - s.o `�' Soft(R2), gray BASALT; intensely z5.0a I I weathered, intensely fractured (random, _I I irregular, rough, open with clay filling, - I I closely spaced, predominately oriented 7s— I r 5°to 25' and 50° to 70°), fine grained with olivine and plagioclase crystals, i vesicular(5 to 10%) (Boring Lava). "'/z/z//'/ ////a becomes soft to medium hard (R2-R3); 10.0— I I moderately weathered at 9.0 feet I - I I becomes medium hard to very hard (R3- - I I R5); slightly weathered, slightly 1 I fractured at 10.5 feet 12.5— I 1 contains open clay-filled joints oriented uc - I I 55° at 12.0 feet PI)W 1})i4 1)J2)i/a uc=17,306 psi I jI1 15.0- I I I iI II - I I1 contains open clay-filled joints oriented I I I becomes very slightly fractured at 16.0 17.5—j II feet I I It)JJ�1))iY))JS)1` T II I II • uc 20.0— I I OC=9,971 psi _4411- 281,5. Exploration completed at a depth of 20.5 20.5 feet. N 22.5— m z a 25.0— E - U z w _ a 27.5— U .7 a 30.0 8, 0 50 100 a B DRILLED BY:PLI Systems Inc. LOGGED BY:CLR COMPLETED:06)10110 u O BORING METHOD:hollow-stem auger and HQ rock coringptext) O g {see report BORING BIT DIAMETER:4-inch U G EoDEsiGN= BROWNCALD-49-04 BORING B-5 z 1 557S SW Sequoia Parkway-Suite 100 Portland OR 97224 MARCH 2011 PROPOSED WALUGA RESERVOIR Off 503.968.8787 Fax 403.968.3068 LAKE OSWEGO, OR FIGURE A 5 360 Z = l] w •BLOW COUNT INSTALLATION AND I--I— z —+ COMMENTS DEPTH u Q - •MOISTURE CONTENT% MATERIAL DESCRIPTION > r 2 FEET a © w Q I-71 RQD% ®CORE REC% w I- v" 302.0 0 50 100 —0.0 v,rs�s FOREST DUFF (10 inches, 6-inch-thick root zone). 300.7 -° Medium dense to dense, brown, silty 7.3 GRAVEL with cobbles (GM); moist to wet 2.5---40.6?. (cailuvium). -moo o 'a 297s. /1 )I I Medium hard to hard (R3-R4), gray 45 J ,./iii/iiiA s.o—I I BASALT; moderately weathered, uc _I I moderately fractured (random, irregular, uc=I1,861 psi I rough, moderately open with clay and - I I oxide filling, predominately oriented 10° _ 7 5— I I to 20°), fine grained with olivine and - I I plagioclase crystals, vesicular(S to 10%) I (Boring Lava). becomes slightly weathered, slightly I i fractured at 7.0 feet 100 I I __ II - 11 - II - II 12.5—I I -1 I I Li I becomes hard to very hard (R4-R5) at 2D r`2l)l/iA 15.0— I I 14.0feet uc 11C=16,294 pst -I [ 285.0 17.5— Exploration completed at a depth of 17.0 1 7.0 feet. 20.0— I- Y - 74 22.5— M Q ❑ a 25.0— Z a 27.5— - u t7 0 30.0 0 50 100 fr DRILLED BY:PLI Systems Inc. LOGGED BY:CLR COMPLETED:06114/10 u o BORING METHOD:hollow-stem auger and NO rock coring(see report text) BORING BIT DIAMETER:2.5-inch GEODESIGN2 BROWNCALD-49-04 BORING B-6 Z 15575 SW Sequoia Parkway Suite 100o PROPOSED WALUGA RESERVOIR Off S03.968.87870Fax7 FIGURE A-6 503.968.3068 MARCH 2O11 LAKE OSWEGO,OR 361 z w BLOW COUNT INSTALLATION AND zDEPTH u <a — - •MOISTURE CONTENT% COMMENTS FEET a MATERIAL DESCRIPTION w o w Q ITTE1 RQD% ® %CORE REC 302.0 0 50 100 th FOREST DUFF (6 inches, 3-inch-thick root • zone). 301.0 Medium stiff, brown, sandy CLAY (CL), 1.0 some gravel; moist (colluvium). 3o0.o ATT • LL=39% 2.5-0`L Medium dense to dense, brown, silty2.0 PL=24% -'o,50 GRAVEL with sand, cobbles and boulers -\ (GM); moist to wet. 5.0 III I Extremely soft to soft (RO-R2), brown to 4.55 _ III gray BASALT; decomposed to intensely _ I l I weathered, very intensely fractured ! l _f I (random, irregular, open with clay filling) S �i� iii/iiffii( _ (Boring Lava). 7.5— I_iI - uc 1 I becomes soft to medium hard (R2-R3); t1C=5,841 psi I 11 moderately to slightly weathered, _ III intensely fractured (predominately 10.0 I I I oriented 10°to 20°), fine grained with _ III olivine and plagioclase crystals, vesicular - III (5 to 10%) at 8.0 feet - Ill 12.5— 'I I) becomes medium hard to hard (R3-R4) at 12.5 feet IIII _ fl 1 with an open clay-filled joint Js��� 15.0— I l I (approximately 4 inches thick), planar, rlr/////.///// III oriented 45° at 14.0 feet - 111 JAL 285.3 Exploration completed at a depth of 16•8 17.5— 16.8 feet. 20.0— 22.5-- M ❑ r z a 25.0— F V - Z 9, 27.5— ^f 0 30.0 0 s0 100 DRILLED BY.PLI Systems Inc LOGGED BY:CMC COMPLETED:06l11110 u z BORING METHOD:hollow-stem auger and NO rack coringreporttext)g (see BORING BIT DIAMETER:2.5-inch z ° G E4DESIGN=_u BROWNCALD-49-04 BORING B-7 m 15575 SW Sequoia Parkway-Suite 100 Portland OR 97224 MARCH 2031 PROPOSED WALUGA RESERVOIR OFF 503.968.8787 Fax 503.968.3068 LAKE OSWEGO, OR FIGURE A-7 362 z O O l] w •BLOW COUNT INSTALLATION AND DEPTH LiQ - 0- •MOISTURE CONTENT% COMMENTS = MATERIAL DESCRIPTION >"' I— FEET wLLI t¢ TTTTI RQD% DTI CORE REC% 304.0 0 50 100 —41 a r�ssI FOREST DUFF(8 inches, 3-inch-thick root zone). 303.1 o Medium dense to dense, brown, silty J 0.9 SIEV • _ o�4 GRAVEL with sand, cobbles and boulders z.5 o b (GM); moist to wet(colluvium). •5.0 °`" _ 299.0 _ Soft to medium hard (R2-R3), gray- 5.0 brown BASALT; moderately weathered, intensely fractured (random, irregular, V))2,0 rough, moderately open to open with /r///rrr/r/ 7.5 I clay and oxide filling, predominately oriented 20° to 30°), fine grained with olivine and plagioclase crystals, vesicular _ (10 to 20%) (Boring Lava). IJc becomes moderately to slightly uc-8,311 psi 10.0— weathered, with vesicles forming gently inclined, flow-banding within rock structure creating weak planes and f I mechanical breaks at 7.0 feet �Jl))/////rr///1 lz.s- becomes medium hard to hard (R3-R4), gray; moderately fractured at 1 2.0 feet _ I - I 15.0- I f UC I 1, I I I- I i 2 2�7// UC=6,396 psi 17.5- l 285.0 • Exploration completed at a depth of 18.0 18.0 feet. 20.0— s • 22.5 F I- H Z _ 25.0- - z _ _ 5 O 27.5 u - a 30.0 so 100 01 DRILLED BY:PLI Systems Inc. LOGGED BY:CMC COMPLETED:06111110 u z 0 BORING METHOD:hollow-stem auger and NO rock coring(see report text) BORING BIT DIAMETER:2.5-inch at m La G EODESIGN? BROWNCALD-49-04 BORING B-8 re 1 S 575 SW Sequoia Parkway-Suite 100 0 Portland OR 97224 MARCH 201 i PROPOSED WALUGA RESERVOIR FIGURE A-8 Off S03.968.8787 Fax 503.968.3068 LAKE OSWEGO,OR 363 z o 0 h-z Z ttiw A BLOW COUNT INSTALLATION AND DEPTH = MATERIAL DESCRIPTION <D — 0- •MOISTURE CONTENT% COMMENTS FEET � w o W < run RQD% P71 CORE REC% L7 301.6 I? 50 I —o'o FOREST DUFF(8 inches, 5-inch-thick root -_ ` zone). 299 Stiff, brown, gravelly CLAY with cobble- 1.1 slEv M • sized fractured basalt(CL); wet 2.5— (colluvium). 798.0 _°d Medium dense, brown GRAVEL with 30 g.O. sand, boulders, and cobbles (GP); wet. -,:oaG g ,es, cd 5.0�.o�< I1 TY d Medium hard (R3), gray BASALT; -25.5 I e ately weathered, moderately _ 'Ili fractured (random, irregular, rough, l I 4 1 ) 7.5— I I open with clay and oxide filling, uc � � �///// ///// uc=5,832 psi _ III predominately oriented 40° to 45', 60', f I I and ne c grained stals,v vesicular with cular(20 to and I1 plagioclase 25%) (Boring Lava). _ 1o.a III 111 becomes very soft(R1), brown and gray; 290.0 III I intensely weathered to decomposed at 1 11.0 III '10.5 feet I ///x77�/7////4 12.5— I I I Extremely soft (R0), red-brown to dark - III brown BASALT; decomposed, very - 111 intensely fractured (random, irregular); - III (Boring Lava- flow base). -III becomes moderately fractured at 13.5 15.0—111 feet Ill _284.0 17.s Extremely soft (R0), light brown to gray- 17'c —— brown SILTSTONE; intensely weathered _ to decomposed, intensely to moderately __= fractured (random, irregular, — a predominately oriented 20'to 45), 20.0 -- laminated bedding, tuffaceous. R. 22.5 J=- m =q Q O f 2 _ Z 1 a 25.0 becomes red-brown; intensely fractured U u == at25.0feet A z U W O 0 27.5 —_ U L — EL- - ///////I// U 0 30.0 I 9.5019"A m 0 50 100 a a DRILLED BY:PLI Systems Inc. LOGGED BY:CLR COMPLETED:06/11/10 U z 0 BORING METHOD:hollow-stem auger and HQ rock coring(see report text) BORING BIT DIAMETER:4-inch ce m z G EODESIGNZ v BROWNCALD-49-04 BORING B-9 2 15575 SW Sequoia Parkway-Suite 100 PROPOSED WALUGA RESERVOIR m Portland OR 97224 MARCH 201 1 Off 503.968.8787 Fax 503.968.3068 LAKE OSWEGO,OR FIGURE A-9 364 ZI 0 u w BLOW COUNT INSTALLATION AND DEPTH u Q: - a •MOISTURECONTENT% COMMENTS FEET a MATERIAL DESCRIPTION w o 1 RQD% ®CORE REC% u 0 50 100 —30.0 =_ `(continued from previous page) Exploration completed at a depth of 30.5 30.5 feet. 32.5— 35.0— 37.5— 40.0— • • • • • 42.5— 45.0— -- • 47.5 • — • 50.0— t- Y r. 52.5 IJ ❑ 55.0 Z 0 57.5— u m 0 60.0 0 50 100 S DRILLED BY:PLI Systems Inc. LOGGED BY:CLR COMPLETED:06111110 O BORING METHOD:hollow-stem auger and HO rock coring(see report lest) BORING BIT DIAMETER:4-inch m` a BROWNCALD-49-04 BORING G EoDEsicN= ORING B-9 15575 SW Sequoia Parkway-Suite 100 Portland OR 97224 MARCH 201 PROPOSED WALUGA RESERVOIR FIGURE A-9 Off 503.968.8787 Fax 503.968.3068 LAKE OSWEGO, OR 365 z 8 -H Z w ♦BLOW COUNT INSTALLATION AND DEPTH u <0- a •MOISTURE CONTENT% COMMENTS = MATERIAL DESCRIPTION >w H FEET ¢ J a w < MT1 RQD% F7]CORE REC% c4 Li I— l 300.0 D 50 100 —0.0 FOREST DUFF (1 0 inches, 6-inch-thick root zone). 298.7 Medium stiff brown, sandy CLAY with 1.3 2 s ,,� gravel (CL); Moist(colluvium). zsxd ® i Dense, brown to dark brown, silty 2.5 b GRAVEL with sand, cobbles, and boulders (GM); moist to wet. r 296.0 — Extremely soft (R0), dark brown, light 40 5.0 brown and red-brown SILTSTONE; decomposed, intensely fractured (random, irregular) interbedded with dark gray and black sandstone layers. yfi,iJ.m ,..r.,n 7.5 10.0 _ 290.Q Extremely soft (R0), light gray-brown 10ac SILTSTONE; intensely weathered, moderately fractured (random, irregular, �t II smooth to rough, predominately 2) 1i)2 )i}l92/!.a 12.5 oriented 10'to 30'and 70'). 15.0 , 17.5 2j1)12.1-1...//....a 20.0 — becomes stained red-brown; intensely fractured at 20.0 feet r+ 22.5 _ 1&5615'* ^' - 277.0 a Exploration completed at a depth of 23.0 0 23.0 feet. 1- z Fe 25.0 I-. u z u w O 27.5 U a 0. m 0 30.0 ck 0 50 100 1 d Q DRILLED BY:PLI Systems inc. LOGGED BY;CLR COMPLETED:06/14/10 u_ 0 BORING METHOD:hollow-stem auger and NO rack coring(see report text) BORING BIT DIAMETER:2.5-inch ee m LgEluCODESIG +z BROWNCALD-49-04 BORING B-10 z C LJG 1VIV m 15575 SW Sequoia Parkway.Suite 100 Portland OR 97224 MARCH 2011 PROPOSED WALUGA RESERVOIR Off 503.968.8787 Fax 503.968.306E LAKE OSWEGO,OR FIGURE A-10 366 Z o Q U w A BLOW COUNT INSTALLATION AND DEPTH u < Z aJ •MOISTURECONTENT% COMMENTS = MATERIAL DESCRIPTION >' ' F- FEET d w d w Q rimRQD% It CORE REC% a Li H --OMv xx 0 50 100 304.0 FOREST DUFF (6 inches, 3-inch-thick root • zone). 303.2 o 1- 0.8 Loose to medium dense, dark brown, _:P>6 silty GRAVEL with sand, cobbles, and — 2.5 i°` 4 boulders (GM); moist to wet (colluvium).j-30155 I I Medium hard to hard (R3-R4), gray I BASALT; slightly weathered, moderately - I I to slightly fractured (random, irregular, I I EI r i r rough, slightly open, filled with clay and /ff�r '/f/tiTi /ter 5.0—I oxide coating, predominately oriented uc -I 1 30'to 40' and 601, fine grained with uc=8,206 p51 -I I " olivine and plagioclase crystals, vesicular -I I (10 to 20%) (Boring Lava). _ 7.5— i - - Il - II lo.o— I Ibecomes very intensely fractured, closely - I spaced at 10.0 feet T1 12.5—I I r2/ ///7//////r//r - II I 15.0 i I — 2885 Exploration completed at a depth of 5s 15.5 feet. 17.5— 20.0— 22.5— m Q r z z 25.0— F n z _ O 27.5— Lu u u - 4 30.0 0 50 100 DRILLED BY:PLI Systems fnc. LOGGED BY:CMC COMPLETED:06111I10 u z re BORING METHOD:hollow-stern auger and NO rock coring(see report text) BORING BIT DIAMETER'2.5-inch G EODESIGN2 BROWNCALD-49-04 BORING B-1 5575 SW Sequoia Parkway-Some 100 PROPOSED WALUGA RESERVOIR Portland OR 97224 MARCH 2011 FIGURE A-11 Off 503.968.8787 Fax 503.958.3068 LAKE OSWEGO,OR 367 60 50 CH or OH "A"LINE x 40 1- u 30 - H `n CL or OL d 20 • 1 0 MH or OH CL-ML / MI_or OL 0 0 10 20 30 40 50 60 70 80 90 100 110 LIQUID LIMIT I- KEY EXPLORATION SAMPLE DEPTH MOISTURE CONTENT LIQUID LIMIT PLASTIC LIMIT PLASTICITY INDEX Z NUMBER (FEET) (PERCENT) • B-7 1.5 23 39 24 15 0 v - z O U 0 0 U 0 r` G EODESIGN_ BROWNCALD-49-04 ATTERBERG LIMITS TEST RESULTS a 15575 SW Sequoia Parkway-Suite 100 PROPOSED WALUGA RESERVOIR Portland OR 97224 MARCH 201 1 4 Off 503.968.8787 Fax 523.968-3068 LAKE OSWEGO, OR FIGURE A-12 368 GRAIN SIZE NO P200 BROWNCALD.49-04-111_11.GPJ GEODESIGN.GDT PRINT DATE:3/21/11:KT U.S. STANDARD SIEVE NUMBERS 3" 1 1/2" 3/4" 3/8" 4 10 20 40 60 100 200 I I I I I I [ I I i 100 = It I 90 - I I- 80 :- • •1•1:: : ; i W _ • •.... ..n..... ... ..•-..• .. -• 60 . to .- Fi ..... ... ........... .. ... - LU : : . Z 50 - : . . . : I- 4043.1 r . . U . a 30 - �. . 20 ." :4 - ® —4- ': " - 10 . - 0 1,000 100 10 1 0.1 0.01 0.001 GRAIN SIZE IN MILLIMETERS GRAVEL SAND FINES BOULDERS COBBLES COARSE FINE COARSE MEDIUM FINE SILT CLAY KEY EXPLORATION 1 SAMPLE DEPTH MOISTURE CONTENT D60 D50 D30 D10 D5 GRAVEL SAND SILT CLAY NUMBER (FEET) (PERCENT) (PERCENT) (PERCENT) (PERCENT) (PERCENT) • B-1 2.5 18 15.88 9.22 2.18 61 27 12 I B-8 1.0 10 127.70 119.66 95.67 10 6 10 • 8-9 1.0 14 128.66 117.61 65.55 11 6 15 i 1 BROWNCALD-49-04 GRAIN-SIZE TEST RESULTS G EO®ESIG NZ 5575 SW Sequoia Parkway.5uire 1a0 PROPOSED WALUGA RESERVOIR FIGURE A-13 W PortOff 503.4 88iand 7870Fa97224 S03.968-3066 MARCH 201 1 LAKE OSWEGO,OR CD SAMPLE INFORMATION SIEVE ATTERBERG LIMITS MOISTURE DRY EXPLORATION SAMPLE ELEVATION CONTENT DENSITY GRAVEL SAND P200 LIQUID PLASTIC PLASTICITY NUMBER DEPTH (FEET) (PERCENT) (PCF) (PERCENT) (PERCENT) (PERCENT) LIMIT LIMIT INDEX (FEET) (PERCENT) (PERCENT) (PERCENT) 13-1 2.5 299.5 18 61 27 12 B-1 5.0 297.0 18 9 B-7 1.5 300.5 23 39 24 15 B-8 1.0 303.0 10 10 6 10 B-9 1.0 300.0 14 11 6 15 B-10 2.0 298.0 29 I z Z oe ❑ U z 2 u u m 6 0 z z 0 0 x G EODESIGNz BROWNCALD-49-04 SUMMARY OF LABORATORY DATA 15575 SW Sequoia Parkway-Sole l00 PROPOSED WALUGA RESERVOIR Portland OR 97224 MARCH 2011 FIGURE A-14 g Off 503.968.9787 Fan 503.96a3068 LAKE OSWEGO,OR 370 • .•••. .- . •.4.1. f,14 OP • • 1, CrC1.9:2010 10 36 AF,1 4.• BORING B-1, 5.0 TO 10.0 FEET BGS. 1111.1w— • • ' • : - • • •r . ••• ;1' ; •,'•,••'011- • ...411.1101.10111111111111,1111114111111141*01.110. . • - = , . 111111 VaL 116:•7 • ••• • - ' • . . r • • -. • '- - , .ks• „i• • •• . k•t-•:•• , p 3 ' ,..• •P• 1111 e ftyalfve•qm "47 • 14„ *1 44..'•?- • • • • • .1', ,.f%1- pti BORING B-1. 10.0 TO 1 5,0 FEET BGS. L'17_ BROWNCALD-49-04 CORE PHOTOGRAPHS G EODESIGNu _z 15575 5111:Sequoia Farkway-Suite 100 PROPOSED WALUGA RESERVOIR Pordand OR 97224 MARCH 2011 FIGURE A-15 Off 506.968 8787 F.503 968.3056 LAKE OSWEGO,OR 371 IP. .4w r, — - R 1 �M� . . - .- .� 1111 - -*iiu.1�� 4 .� f II ...,;:ditigil . 7 '. r Y, l6 09!14/0/205,PM . . . , w'. }': '4 �ZG. i a�• }� 'r �s. • • BORING B-1, 15.0 TO 20.0 FEET BGS. _ • _ -- . r- �15,r01..1"�CaltQ - . - L1 —— III K r{U L3O/. 3— - TPuM - f br.Pr _ - . 1 _� 06/09/2010 BORING 8-2. 2.75 TO 6.75 FEET BGS. 0 0 u 4 5, a LL C q G EODESIGN BROWNCALD-49-04 CORE PHOTOGRAPHS U 15575 5W Sequoia Parkway•Suite 100 Portland OR 97224 MARCH 2011 PROPOSED WALUGA RESERVOIR FIGURE A-16 m Off 503.968.8787 Fax 503.968,3068 LAKE OSWEGO, OR 372 • y — nn. —ter _ �: y 'C( Ito So^^QL ir 3` e . • J l} I - 06/09/2010 BORING B-2. 6.75 TO 8.25 FEET BGS. 1 [ i . . + y - • " .,nL - -- }YP1-►4-,a ', i• • 06/09/2010 M 6 BORING B-2. 8.25 TO 11.75 FEET BGS. 0 7 I x. Ur LL 75, o i G EODESIGN= BROWNCALD-49-04 CORE PHOTOGRAPHS G.7 - U 15575 5W Sequora Parkway•Suite 100 Portland OR 47224 MARCH 2O11 PROPOSED WALUGA RESERVOIR FIGURE A 1 7 OR 503.968.8787 Fax 503.968.3069 LAKE OSWEGO,OR 373 • 611111111114 ..atesarodow we" 130f4^4t 3 z bYPr'd• 06/09/2010 BORING B-2. 12.75 TO 17.25 FEET BGS.• rAita. A r • f: 'Zveti off fir ='--, , 4 1ri 411 • ipi4k 06/10/2010 y •i O BORING B-3. 5.0 TO 10.75 FEET BGS. 0 V Q LL 4 GEODESIGNV BROWNCALD-49-04 CORE PHOTOGRAPHS L15575 SW Sequoia Parkway•Site 100 Portland OR 97224 MARCH 2011 PROPOSED WALUGA RESERVOIR Off 503.968.8787 Fax 503.968.3668 LAKE OSWEGO,OR FIGURE A-18 374 - -.44M. ,, ! I� 4, w •I -~ 1 r �',: ' .1tilt IF r �. M .:r 'r ' • . I'1. wiry/'r. ' a *if. di • r „� . 4!„ •• sMiditll BORING B-3. 10.75 TO 16.0 FEET BGS. . -,p-- , w ,. .....,;Iiiii-..._ Ia i ih. ,SN Klir64:4? le)\iii f f 'ny-' Auti 4 <�L��.�/ems r4 l _ Os' -- 1' tic 5~,' /V�.. Ito 1. �''`.....Se / - 0 0/l0 I 0 - ;i , ... : , ` \-144, 4 BORING B-3. 16.0 TO 21.0 FEET BGS. C 0 x o_ u 4 1.a a th o G Eo DESIG N? BROWNCALD 49 04 CORE PHOTOGRAPHS u 1S575SPSequoia Parkway neioo PROPOSED WALUGA RESERVOIR Portland OR 97224 MARCH 2011 .. Off 503.9668787 Fax 503698068 LAKE OSWEGO,OR FIGURE A- 9 9 375 % ;.' '; w 4 •`'N roA"'\7' ,'AfT**.:— ____- :II * . '1 ' e" , •,{-- LT-�.._.- . - -- - —,-11 r. ..—...-.y+ }ram .w.i... -'' — . 34-41f`,, .-.7.'' / -4 -I 1 iiiK i 1 - x ytr ,� `-• I .1. BORING B-4. 2.5 TO 5.5 FEET BGS. / , iit . 1 -..110. ' / -----. - I, A - • ,,• j, • y I 41 Lti. 4:� �` 7 . � Y` 1 r i ! ;er DC 10,2010 1t�-09 1 . c . • • 0 ✓ BORING B-4. 5.5 TO 9.5 FEET BGS. A i a Q o • G EQ DESIG N BROWNCALD 49 04 CORE PHOTOGRAPHS Li 15575 SW Sequoia Parkway-suite 100 Portland OR97224 MARCH 201 1 PROPOSED WALUGA RESERVOIR FIGURE A-20 Off S03.968,3787 Fax 5O3.968.3068 LAKE OSWEGO,OR 376 11,. ,t a ' T + ..r Ste• b 411 4 r 1 '—it ` ' .� S•'t 3, ba i SO �T, * - r�� !,. I 1 7 i- C- S. . , i 1. .441 I I. a , .,; ' .- _ •- . .4 .) ! ?qi' ° ' `' • a ; — R -• — r� if r 'ti �<1 .6.10ii0}011U1FAt41 a �� •4 ,E '/ BORING B-4. 9.5 TO 14.75 FEET BGS. ; • .': i `�•.t fir• *7 jT`�a t.e. .,ter ' .t f A44 ti .' .' .,,,„,„,,, „,„... .. „ , Y. i Adh, _ ,,A ..-. 431 A. , 116,...,4" zei,7,:- 97.”11v • AR , , •, .. 'l -1111 30 , ' ''..., il' , i• — . _..„0„ , IL, •,,, .„- ...f. -ti f 7r !+� 3t's'� ► it - i ,�. . 0 La BORING B-5. 5.5 TO 10.5 FEET BGS. 0 0• a V 4 4 LL 4 o q O DESIG A IYIz BROWNCALD 49 04 CORE PHOTOGRAPHS V 15575 5W Sequoia Parkway•Suite 100 Portland 0997zza PROPOSED WALUGA RESERVOIR o Off 503.968.8787 Fax 503.968.3068 MARCH 201 1 LAKE OSWEGO,OR FIGURE A-21 377 '•. . is 4 r • ,. ;tit. -1,11t1/4.Clit '...4.' ....y,-,...4.,.., ,• ., .i.:di,AL. ..,4 41 `E. / 1 .aril — ' , s� tom'." > - ���,;' �' 1 lit il,,.. ik. tr:•1'. ;. RV,IP"' . ,,,- ••,,.. s• ''.. '0\4 4. 'I.... ' ,., BORING B-5. 10.5 TO 15.5 FEET BGS. •• `..- . , i q• • w _ . Arm � _ ." - `� r - ..assialliglIF Nik lirallitlitili',‘'N'''1' G[-•r.t. a-2. • Ir.-' +l..L sgss,. _ it { -44 w • f. 06.It'20i0 9�136 P,• i 'y 1 • c BORING B-5. 15.5 TO 20.0 FEET BGS. d 0 0 u 4 5 a G EO DES IGN= BROWNCALD-49-04 CORE PHOTOGRAPHS U1 5575 SW Sequoia Parkway-5urte 100 o Portland OR 97224 MARCH 2O11 PROPOSED WALUGA RESERVOIR ` Off 503.968.8787 Fax 503.968-3668 LAKE OSWEGO,OR FIGURE A-22 378 ,\ 1t , .......• .;:, — - _----_ _- - '____. ii # r.+�' - - --- bite.�.^ — - 1. cf/+� . r r:, = r r Bok ru'.' 1 ! ." }flan : 1 �'f� •Lief; V . pe4'F': 2.. r NsN _ l i ' (, -- T-'s.N.....„. 7.00 -......: I.,, f �4 r . , ,,.„, `.� �l r2010 01.50 PM ,/ ' — r Y Ir.,. BORING B-6. 2.0 TO 7.0 FEET BGS. .. 4 • t • ' ay Js ....Ark' . rr . r . ► a' _ 4 . ,yam` :�- !", iT- 41,-- -..,:.:�-..�... ^`..a.>__ - w-„.. ae.W:r>< -rit u 1 Pc rTi, li/ 'r . .,.. ;' . '.� Ow / it • PC 1 �ir14 203V'u5.48 Aly .V: i f G b a t' BORING B-6. 12.0 TO 1 7.0 FEET BGS. 0 0 a z U U 4 Q 4- w G EO DESIG N? BROWNCALD 49 04 CORE PHOTOGRAPHS 15575 SW Sequoia Parkway-Suite 100 PROPOSED WALUGA RESERVOIR Portland0897224 MARCH 2011 FIGURE A-23 2 Off 503.968-8787 Fax 503.968.3068 LAKE OSWEGO,OR 379 Rc *. 1 1!' ��it ,..mar— a�� E:v * ,. i �t�' — . (e. • i ! 0 1Yr f ►. ft,;�R ink ; 1 �+' • V.'*!! .• i v '� i'' �5U PM � �* • • �, - BORING B-6. 2.0 TO 7.0 FEET BGS. .1 I Y I it. j■. , `ice ` • \ lt`4.. i I : �} r'' [ `. e . I Ay. i • +� e� ` 4 x Prow l;lo 4.. • fir j .� , w Ik:M 7 : i ,, a; f lb t, sc. f'• ,,, .� 1 y' �, , _ ` f� ? •x' *,-. . ' , , \ `4 r'*-.\L yr .� �" _ _ •1 / �.r CI a BORING B-6. 7.0 TO 12.0 FEET BGS. 0 a z uo- v g -0 a a u BROWNCALD-49-04 CORE PHOTOGRAPHS G EODESIGN= U 15575 SW Sequoia Parkway-Suite 100 Portland OR 97224 PROPOSED WALUGA RESERVOIR 2 Off 503,968.8787 Fax 503.469.3060 MARCH 2011 LAKE OSWEGO,OR FIGURE A-24 380 14 --- 6e»,,1a41. i-rtt tall" 11r • 13eYixt, 1.7 GP f),vir'.12.'-!? 1 a N.:'..;- i ,, 940?0 - ,i BORING B-6. 12.0 TO 1 7.0 FEET BGS. alp , ...+cif• ..1111.11111.1111.. 4 Ir 1, bra S++CaI.Or -. � �� 'la'1,U' UDr^ " P.uN : 1 !) P W Li.5— 7.5- 06/10/2010 b 0 BORING B-7. 4.5 TO 7.5 FEET BGS. P 7 2 0. V 4 3, Q 4 G EODESIGNz BROWNCALD-49-04 CORE PHOTOGRAPHS UEE I SS75 SW Sequoia Parkway-Suite 100 O Portland OR 97224 MARCH 2O11 PROPOSED WALUGA RESERVOIR FIGURE A-25 co Off 503.468.8787 Fax 503.968.3968 LAKE OSWEGO,OR 381 /F N F . ., •Z, f N G 06/10/2010 BORING B-7. 7.5 TO 12.5 FEET BGS, 4 d i `A ' "Jo,. ilth,,'' Ilk '' ,111" ."111.\.it,7.....""".114 ' 41. .,- • ., Mid �w Ell sirit. —• ...,:,,,,C,r 41 N r06/11,/2010 M 0 BORING B-7. 12-5 TO 16.75 FEET BGS. 0 0• = a u 5 6 7-17 G EoDESIGNz BROWNCALD-49-04 CORE PHOTOGRAPHS E 15575 SW 5equofa Parkway-Suite 100 0 Portland 099nz4 MARCH 2011 PROPOSED WALUGA RESERVOIR Off 503,969.8787 Fax 523,968.3068 LAKE OSWEGO,OR FIGURE A-26 382 •.,fir- _ t _« en Ai M 1 -11! f _ *ID - ' ,_,..... ...'\:...". „Alt:. % - e- • ` "y it* � -- �} . d fir' 06111 .2010 BORING B-8. 5.0 TO 8.5 FEET BGS. — , lir;'''' ati 1` rAi, �. P in Y r—--- =. . ,,..S silt lei VA!' 5 13 ;c - \ ,� -I O ., os;- 1,'2010_ "= BORING B-8. 8.5 TO 13.75 FEET BGS. V O Z7 d V 4 Q v o G zu EoDESICNZ BROWNCALD-49-04 CORE PHOTOGRAPHS U 15575 SW sequoia Parkway-Suite 100 f, Portland OR 97224 PROPOSED WALUGA RESERVOIR Off 503.956,8787 Fax 503.9583060 MARCH 2011 LAKE OSWEGO,OR FIGURE A-27 383 1P1111.1r r ••••froompww;" # 411ar • ,-ram p---- - ?.! i,t* , { . . e... .4. ., .. ... .... k ..• " i . • 06/11/2010 - ./ BORING B-8. 13.75 TO 18.0 FEET BGS. Illt • "��` `��. �., �� it . '� r e ••` ,• r� ♦mot. • •` .0 , 1.. ,.....ilk ...._,, ...d. .. ..:_ ,:ii:,%,f '.1.0? _di..,.......,70: 3 , ' Ai, tlt• ,..' , •mot. 4 4y1. it., ':1• ..r 40 IPL r i r:; ".:*:,- :,. ,', . 1 _ �"+`• r - ,riMMm' 'y T ,4' '�• `` m w ...4 , c I. 0 BORING B-9. 4.5 TO 9.5 FEET BGS. ± u g 1.1 jG EO DESIGN BRQWNCALD 49 04 CORE PHOTOGRAPHS LJ 15575 SW Sequoia Parkway-Surte 100 Portland OR 97224 MARCH 2011 PROPOSED WALUGA RESERVOIR FIGURE A-28 Off 503.968.8787 Fax 503.968.3068 LAKE OSWEGO,OR 384 •I 1 sr. b 'ra.- 4 70.Ti . - T—-,s r F� r i "4. ' •,\ .•• of T. eh- i ... „..i, , ,....ft- 4, .... • • '.. (fr -' . ...._,....iiiiiiiiiii......e, • ,f-Ak. •1/-',' ' .15- -!,' "'-* , . • .. ,,• — .0. __ U• Y i� "ice 4 -�Y T - ty i ' , i - �. - 4 ,� A''' 4; _ ' • as; °zap6na if i.'+ BORING B-9. 9.5 TO 13.5 FEET BGS. , 4 ''.7 1-.. lif'....1-' ',40.,,:,--- -i. -,..i.,, .. \-,, , , ,.. ,,,, - ,'4;4''' . .',.? 4 • ii.,)711 ipplp �a 1•` !. `h i1 �i • :-.1,,.. .. . „is__ , . A . • , hfl,fl„ r • +(_` i t P'*^`L'r1 a,It I - it r.11'2i'l1�"'1ti4 Aral -1' At, . ,.' 0 Nr)' ` sdi T.j' m = .4: ‘410. ; b BORING B-9. 13.5 TO 19.0 FEET BGS. a x U Q a ck G EO DESIG Nz BROWNCALD 49 04 CORE PHOTOGRAPHS U 15575 SW Sequoia Parkway-Suite 100 Portland CR97224 MARCH 2011 PROPOSED WALUGA RESERVOIR FIGURE A-29 2 Off 503.968,8737 Fax 503.468.30b8 LAKE OSWEGO,OR 385 : ,'` - ��' -sue. }1.-y. ! a - +1"(1, di,_3 J it '1 4 ,... ' 4 tall l /%0 B.p,o`t09 (rr 1 . �' ' t' I'3 Pe.P tH:1 'Z5• r y � 1 //�'�1 QIivTLA''2 : f'.,up-,r i if.. ••,' t: \lotto, t i20'7 ?;i f- y--_-pi '4 ,tl BORING B-9. 19.0 TO 25.0 FEET BGS. ♦l • 1 P =: ::1''' ,;lb. •,4,,,%.410114‘. 441.111: 414,13rwita 4 r gi,a 1 la': a .. .:. '.'.''4*.:. .4'.. _ ram, ` . . • " . .. . ` (--,,7 5fLbvst��- f 1_o� to/) 1 /ir1 \,_..:.... --2,, '-dam 13 � * ; . ;i.. itt: 6_ , pet . 7.6,.5-2' -c w l►� + O614V201 1714v !+/•. m }7 ti m < 0 BORING 8-9. 26.5 TO 29.5 FEET BGS. 0 4 u a g a I GEODESIGN= BROWNCALD-49-04 CORE PHOTOGRAPHS 1 15575 SW Sequoia Parkway-Suite 100 Portland OR9722q MARCH 2011 PROPOSED WALUGA RESERVOIR m Off 503968,8787 Fax 503.968.3068 LAKE OSWEGO, OR FIGURE A-30 386 ai .aotboo-tr-of : 130 4, • . 0614.2010 12:30 PM BORING B-10. 4.0 TO 6.0 FEET BGS. 72 75 79 11 11. M1 11 I Mai • .M Poo—�� 06 14 2010 12 31FM BORING 8-10. 5.0 TO 7.0 FEET BGS. 0 5 a GEODESIGNu. BROWNCALD-49-04 CORE PHOTOGRAPHS U 15575 SWSequoia Parkway-Suite 100 Portland OR 97Z24 MARCH 2011 PROPOSED WALUGA RESERVOIR FIGURE A-31 Off 503.968.8767 Fax 503,968.3%6 LAKE OSWEGO,OR 387 u . v. ,• Et V,V.W . .t - . .. - --- . . .._ . Al. 'SWOT" 4 ..N. .. -.. 41, tip/it <au Pet irt= `t.—q- P ri.),A►3 t,r, 06-14.201012'31 PM BORING B-T O. 6.5 TO 9.0 FEET BGS. v ,- },' 4.4.A,N f,,.. fit ; t, V--...(.Z:..',.,..1. ,.,,„,.-/.P.,i4. p M-.-.I..1.,r-,.,,d,,o,It-t..,.', -....'-•_,'e.y,.'.l.--A,re..r I,..r,i.. .., 1 ) ` -L..� ti:„ ..„t•-.1'.,,,‘. ..—.r,..I't' •. o ...-,..,'',.- , ' 1,.-„ , .- r t �.,; tom,- . .....1.4.21/=,.....;.. ..,.. , • . — _ I , ' i , ` R d a BORING B-10. 1 1,0 TO 1 7.0 FEET BGS. a u a ch q G EO DESIG N BROWNCALD-49-04 CORE PHOTOGRAPHS 15575 SW Sequoia Parkway-Suite 100 o Portland 0697224 MARCH 2011 PROPOSED WALUGA RESERVOIR Off 503.968,8787 Fax.503968-3668 LAKE OSWEGO,OR FIGURE A-32 388 iv �. .-- - Y '„1 b: ' i"ram . i Op° e4.r (I pi r ..1' -re ' - f ...,:„. 3" / - I, w 1 r .'; ; A4:2010 Ot31 E M • ' .•` . .7, BORING B-10. 17.0 TO 22-0 FEET BGS. `— # '�' • „iroteeibi. ‘ .i . ;' Yi # '. - T�\s 1 f -Am- . •,J 4\! \ Of. 7 4 ' 06‘&I,2010 en BORING B-1 1. 2.0 TO 6.7 FEET BGS. x V '-n a a G EODESIGNW BROWNCALD-49-04 CORE PHOTOGRAPHS 4575 SW Sequoia Parkway-sull 100 PROPOSED WALUGA RESERVOIR 1 Portland OR97224 MARCH 2011 FIGURE A-33 Off 503 968 8787 Fax 503.968,3068 LAKE OSWEGO, OR 389 • 1`�� `r s 't,' ' ` • (�. 1 {`r. S T aI ' it. `di"' r /l '1 ,� �,, . b� F aaJs ` ' .. _. •. 1 it h ' I I. .� ; A •r . • r• ► a • y i 11111 L., 06/11:2010 , : BORING B-10. 6.7 TO 10.25 FEET BGS. -t V A'r , 1. • tk 'Q. ', 5 y 06/11/2010 N M Cl - Vs 0 BORING B-1 1. 10.25 TO 15.5 FEET BGS. 0 0 V 4 5, a 0 GEODESIGNz BROWNCALD-49-04 CORE PHOTOGRAPHS i 5575 SW Sequoia Parkway.5ude i 00 d PonlandOR97224 MARCH 201 1 PROPOSED WALUGA RESERVOIR FIGURE A-34 Off 503.968.9797 Fax 503.968,3068 LAKE OSWEGO,OR 390 APPEND9X 3 391 392 APPENDIX 8 OUTSIDE LABORATORY TESTING We submitted several bedrock samples to ACS Testing Inc. of Tigard, Oregon, to conduct supplemental laboratory testing. The results of their testing are discussed below and included in this appendix. UNCONFINED COMPRESSION STRENGTH Unconfined compressive strength testing was completed on several samples from the extracted rock cores. The testing was completed in accordance with ASTM D 2938. The test results are included at the end of this appendix and summarized in Table B-1, Table B-1. Unconfined Compressive Strength Test Results Depth Unconfined Boring feet BGS) Rock Description Compressive Strength (psi) B-1 9.0 Hard Basalt (R4) 11,670 B-1 16.75 Hard Basalt (R4) 15,621 B-2 7.0 Hard Basalt(R4) 12,452 B-3 9.25 Soft Vesicular Basalt (R2) 2,746 B-4 4 Very Hard Basalt(R5) 16,624 B-4 13.75 Hard Basalt (R4) 14,870 B-5 11.5 Very Hard Basalt(R5) 17,306 B-5 18.5 Hard Basalt(R4) 9,971 B-6 5 Hard Basalt (R4) 11,861 B-6 14.5 Very Hard Basalt(R5) 16,294 B-7 7.5 Medium Hard Vesicular Basalt (R3) 5,841 B-8 8.5 Hard Vesicular Basalt (R4) 8,311 B-8 15.3 Medium Hard Vesicular Basalt(R3) 6,396 B-9 6.5 Medium Hard Vesicular Basalt(R3) 5,823 B-11 4 Hard Vesicular Basalt(R5) 8,206 CEO DESIGNz 3-1 8rownCald-49-04:03221 I 393 ACS Testing, Inc 51.1iALT 7409 SIN Tech Center Dr Ste 145 •NtR re Tigard,OR 97223 D1 Tertm•,. PH:503-443-3799 F: 503-620-2748 A.,. Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL; Rock Core LAB NO: 5091-1 SAMPLE SOURCE: GDI B-1 @ 9.0-10' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 2.05 in MAXIMUM STRESS: 11,670 psi HEIGHT: 4.71 in AT STRAIN: 0.53% STRAIN RATE: .006 incheslmin. DRY DENSITY: 158.5 Iblcu.fl MOISTURE: 0,9% 14000 IE f 12000 - i 10000 - ii 8000 - —1 6000 4000 • —.— i 2000 0 - 0 0.01 0.02 0,03 0.04 0.05 Strain(in) REVIEWED BY DE/js 394 ACS Testing,Mc SPHALT 7409 SW Tech Center Dr Ste 145 "CRET Tigard,OR 97223 OILS r ur_.In( PH:503-443-3799 F.503-620-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-2 SAMPLE SOURCE: GDI B-1 Q 16.5-17.2 DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cares APPLICABLE PORTIONS OF ASTM D2938) DIAMETER: 2.05 in MAXIMUM STRESS: 15,621 psi HEIGHT; 4.87 in AT STRAIN: 0.72% STRAIN RATE: .006 inches/min. DRY DENSITY: 168.3 IblcuJt MOISTURE: 0.6% 18000 — ___..,._.____._.__ __�....�_..--.--•--.�_ _�_ _ .. ..__ 11 16000 I I 14000 12000 .10D00 . vi 2 8000 6000 I 4 I i! 4000 2000 — 0 • I • 1 0 0.01 0.02 0.03 . 0,04 0.05 Strain(in) REVIEWED BY l f DEljs 395 ACS Testing,Inc $PHAi_T 7409 SW Tech Center Dr Ste 145 ONCRETE Tigard,OR 97223 OILS*rw PH:503-443-3799 F:503-620-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-3 SAMPLE SOURCE: GDl B-2 @ 7-8' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 1.73 in MAXIMUM STRESS' 12,452 psi HEIGHT: 4.04 in AT STRAIN: 0.87% STRAIN RATE: .006 inches/min. DRY DENSITY: 168.8 Ib/cu.ft MOISTURE: 0.9% 14000 , 12000 -- 10000 I I _ 3 I 3 .;8000 � � I 6000 4000 2000 0 • • • 0 0.01 0.02 0.03 0.04 0.05 Strain(In) REVIEWED BY DE1js 396 seHwcr ACS Testing,Inc 7409 SW Tech Center Dr Ste 145 axcrc Tigard,OR 97223 OILS re,ivh.•, PH:503-443-3799 F:503-620-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-4 SAMPLE SOURCE: GDI B-3 @ 9.25-10' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 1.72 in MAXIMUM STRESS: 2,746 psi HEIGHT: 4.04 in AT STRAIN; 0.62% STRAIN RATE: .006 inches/min. DRY DENSITY: 130.4 lb/cut MOISTURE: 2.6% NOTES: CORE FULL OF AIR VOIDS. 3000 , , 1 2500 • 2000 N d 1 w 1500 _ 1000 ( : 500 I I 0 • 0 0.01 0.02 0.03 0.04 0.05 Strain(in) REVIEWED BY DEljs 397 ACS Testing,Inc SPHA_T 7409 SW Tech Center Dr Ste 145 Ohc.RaTe. Tigard,OR 97223 OILS rest✓._./or PH:503-443-3799 F:503-620-2746 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-5 SAMPLE SOURCE: GDI B-4 Q 4-5' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 2.05 in MAXIMUM STRESS; 16,624 psi HEIGHT: 4.84 in AT STRAIN: 0 62% STRAIN RATE: .006 inches/min. DRY DENSITY: 168.9 Iblcu.ft MOISTURE: 0.8% 18000 — 71 16000 14000 ' 12000 I I 8.0000 Nco i fir,8000 - U) 6000 I 4000 2000 1 0 I - I 0 0.01 0.02 0.03 0.04 0.05 Strain(in) REVIEWED BY Z /1„/".------------ DEPs 398 ACS Testing,Inc 37RALT 7409 SW Tech Center Or Ste 145 NCYItTE Tigard,OR 97223 OILS PH;503-443-3799 F:503-620-2748 re.rrinr.Inc Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-6 SAMPLE SOURCE: GDI B-4 @ 13.75-14.75' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 2.05 in MAXIMUM STRESS: 14,870 psi HEIGHT; 4.75 in AT STRAIN: 0.84% STRAIN RATE: .006 inches/min. DRY DENSITY: 168.1 Ib/cu.ft MOISTURE: 0.7% 16000 — I • — i i 14000 I 12000 10000 -53 1:::: F j 4000 ; E 2000 � E } 0 I 0 0.01 0.02 0,03 0.04 0.05 Strain(in) REVIEWED BY DQs 399 ACS Testing,Inc SPHALT 7409 SW Tech Center Dr Ste 145 otrcA.in Tigard,OR 97223 airs PH:503-443-3799 F:503-820-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-7 SAMPLE SOURCE: GDI B-4 @ 13.75-14.75' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 2.05 in MAXIMUM STRESS: 17,306 psi HEIGHT: 4,88 in AT STRAIN: 1.13% STRAIN RATE: .006 inches/min. DRY DENSITY: 170.3 161cu.ft MOISTURE: 0.5% 20000 i I i 18000 - • I I [ I 16000 € , i 14000 • I ^,12000 inoo.. o10000 - ; t ;v E `R 8000 ' I tEEft 6000 — T 3 4000 - 1 200D { I 0 i i 1 0 0.01 0.02 0.03 0.04 0.05 0,06 Strain(in) REVIEWED BY 7, - // DE/js 400 sPrA LT ACS Testing,Inc 7409 SW Tech Center Dr Ste 145 =SCPE E Tigard,OR 97223 °1LS Torni-,;.pig: PH:503-443-3799 F:503-620-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Weluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Care LAB NO: 5091-8 SAMPLE SOURCE: GDI B-5 @ 18.5-20.0' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 2,05 in MAXIMUM STRESS: 9,971 psi HEIGHT: 4.23 in AT STRAIN: 0.71% STRAIN RATE: .006 inches/min. DRY DENSITY: 169.0 Ibfcu.ft MOISTURE: 0.9% 12000 I- I 10000 E I 8000 1 } O.6000 e 4000 - i 2000 - i I 0 • I 4 0 0.01 0.02 0.03 0.04 0.05 Strain(in} REVIEWED BY (91 0,--------..-----7- DEfis 401 ACS Testing,Inc SPHALT 7409 SW Tech Center Dr Ste 145 ONCRETE Tigard.OR 97223 OrLS PH.503-443-3799 F:503-620-2748 f'�rtr„_.I er Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-9 SAMPLE SOURCE: GDI B-6 @ 2-5-3.0' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 1.71 in MAXIMUM STRESS: 11,861 psi HEIGHT: 3.91 in AT STRAIN: 0.51% STRAIN RATE: .006 Inchesimin. DRY DENSITY: 167.1 lb/cu.ft MOISTURE: 0.6% 14000 _ r _1 12000 .._._...._. ._.._..._...._................_._I _ _.._, 1._...._....__ .. U3 —. — — __. L .._$ m. i I cu f 1: ItT I :::: i I j I I 0 0 I 0 0.01 0.02 0.03 0.04 0,05 Strain(In) -------------- REVIEWED BY f �/ DEfjs -,_Y 402 SPHALT ACS Testing,Inc 7409 SW Tech Center Dr Ste 145 oxcrre Tigard.OR 97223 OILS N.sruii.irk- PH:503-443-3799 F:503-620-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-1D SAMPLE SOURCE: GDI 8.6©14.5-15.0' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 1.71 in MAXIMUM STRESS: 16,294 psi HEIGHT: 3.80 in AT STRAIN: 0.79% STRAIN RATE: 006 incheslmin. DRY DENSITY: 171.9 lblcu.ft MOISTURE: 0.6% 18000 — , .,.»..--- I i 16000 -- -I.—_—..__. -- _._.�_w, — 1 I 14000 _ -- _ —- ; 12040 ..__.. __. I a10000 -- .. i in 1 N m 8000 E— — — I 1 6000 — ..... _ _ I 4000 .._._._._._.—...... i l I 1 2000 — —. — — .... 0 I 0 0.01 0.02 0.03 0,04 0.05 Strain(in) REVIEWED BY / DE/is 403 AGS Testing,Inc SPNhLT 7409 SW Tech Center Dr Ste 145 ONCREra Tigard,OR 97223 of[Srtur_. ,e PH:503-443-3799 F:503-620-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waiuga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rook Core LAB NO: 5091-11 SAMPLE SOURCE: GDI B-7 @ 7.5-8.0' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 1.74 in MAXIMUM STRESS: 5.841 psi HEIGHT: 4.25 in AT STRAIN: 0.59% STRAIN RATE: .006 inches/min. DRY DENSITY: 165.8 Itilcu.t MOISTURE: 0.8% NOTE: SMALL FRACTURES IN CORE 7000 ..»w._ _______/. i '6000 5000 _�......�,,,,_,__� — — `_,.,,_)--- _.1.. .., _..J a —i- -- N o 3000 cO I i 1000 I I I 0 ' - 0 0.01 0.02 0.03 0.04 0,05 Strain(in) • REVIEWED BY /y DEls 404 ACS Testing,Inc SPIIALT 7409 SW Tech Center Dr Ste 145 ONCRETE Tigard,OR 97223 oils PH:503-443-3799 F:503-620-2748 FL.win,.2•,,,_ Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-12 SAMPLE SOURCE: GDI B-8 @ 8.5-9.0' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM 02938) DIAMETER: 1.72 in MAXIMUM STRESS: 8311 psi HEIGHT: 3.65 in AT STRAIN: 0.68% STRAIN RATE: .006 inches/min. DRY DENSITY: 165.0 Ibicuit MOISTURE: 0.9% NOTE: FRACTURES AROUND CORE. 9000 ! 1 i ..____ i i i t A - — , 7000 ------- —'— --I ----- _., 6000 — —___ — - r-• 0_05000 i _ 1 ..,_. ___,..—. I u) I I in 24000 cn i 1 3000 -------- - 2000 _ i_—...— i - 1000 --.— _____ '.- - --- I0 . • . 0 0.01 0.02 0.03 0.04 0.05 Strain(in) REVIEWED BY d r DE/js 405 ACS Testing.Inc EPHALT 7409 SW Tech Center Dr Ste 145 ONCRETE Tigard,OR 97223 cit.. PH:503-443-3799 F:503-620-2748 Terrine.-The Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed Waluga Reservoir JOB NO: 10-2627-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-13 SAMPLE SOURCE: 001 B-8 @ 15.25-16' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rock Cores APPLICABLE PORTIONS OF(ASTM 02938) DIAMETER: 1.74 in MAXIMUM STRESS: 6,396 psi HEIGHT: 4.07 in AT STRAIN: 0.98% STRAIN RATE: .006 inchesfmin. DRY DENSITY: 166.0 Ib/cu.ft MOISTURE: 0.6% NOTE: FRACTURES AROUND DIAMETER OF CORE. 7000 _ --, - �, I �1 i— 6000 — _....� .. _ _ _..._- —_..__. ---I 1 i —.__. ,, ..__, -- �..._..,_. _ .._..._..,_..., ..� �, , �..._--I 5000 N 4000 ---.,._. _.._..--—— — I , .._. a i a 2000 — ._._.•__..._.—.__..._ _.......—_-____ __..-..-.�_..._._ --,-- 1 .._... 1000 H — I ! , . , a . 0 0,01 0.02 0.03 0.04 0.05 Strain(in) REVIEWED BY (11-17.-------- DEljs 406 mcoTovtins Inc r4ovSm Tech Center m Ste wn Tigard,OR e/zzo LS pKno3-4*s-3res p.soa'nu0-ur*o *^ Gem Design 15575 SW Sequoia Parkmmn4100 Portiand OR 97224 pnoJsnr: Proposed Waluga Reservoir JOB NO: 10'2827'nnn LouxT|om, WORK ORDER NO: mATUmAL: Rock Core LAomp: 5091'1* SAMPLE SOURCE: Go/ n'e@0.5-7.5' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH op Rock Cores APPLICABLE PORTIONS op(xaTMouoso) ommsrsq: e.00 |n wAx/wuMsTRESs: 5,823vo/ HEIGHT: 4.75 |o AT STRAIN: 0,53% STRAIN RATE: 000 mchasmm. DRYDEmS�TY: 142umicua MOfSTuns: 1.4% woTss: WHOLE oonF.FULL oF AIR VOIDS noon / | u000 '------'--' '---- ----- � -- ------�— 0000 -- -- -- -- | --�� � 1 | ) � ! ] :F4000 ---�—�— -----�--- / -- --- -- �—�� in Q �� � | \ 2000 ---'-- -- -- ------ -------- -- ---- Iono --- ----- — ----------- / -- ------- | \ | o o 001 0,02 mm 0,04 0,05 $train(in) REVIEWED BY 407 ACS Testing,Inc SAHaLT 7409 SW Tech Center Dr Ste 145 ONCRETE Tigard,OR 97223 one, ,_._,e_ PH:503-443-3799 F:503-620-2748 Geo Design 15575 SW Sequoia Parkway#100 Portland OR 97224 PROJECT: Proposed waluga Reservoir JOB NO: 10-2827-000 LOCATION: WORK ORDER NO: MATERIAL: Rock Core LAB NO: 5091-15 SAMPLE SOURCE: GDI B-11 @ 4.6' DATE SAMPLED: SAMPLE PREP: UNCONFINED COMPRESSION STRENGTH OF Rack Cores APPLICABLE PORTIONS OF(ASTM D2938) DIAMETER: 1.73 in MAXIMUM STRESS: 8,206 psi HEIGHT: 4,20 in AT STRAIN: 0.36% STRAIN RATE: .006 inches/min. DRY DENSITY: 164.7 Ib/cu.ft MOISTURE: 0.4% 9000 - _ , . �. .. ... 7000 —. _.._..' :.:—__...___ --i ' — - „ I 6000 — __ ... _..._...._.. — —_ T= i I 7 rn I o 3000 _..l._,.._._,_.._.__. t._._______,,r_._._--t . 1 2000 — ....._....... -._.. .. ._ _. ._ � i_ ::._,..._.:—r:::____ ._�.—.._.._..__—.._._ i 1 I 0 E • 0 0.01 0,02 0.03 0.04 0.05 Strain(in) REVIEWED BY ',/ DE/is 408 ACRONYMS 409 410 DKS MEMO RAN®U M 720 SW Washington St. Suite 500 Portland,OR 97205 DATE: September 5, 2012 503.243.3500 www.dksassociates.com TO: Brad Moore,Kennedy/Jenks Consultants Pete Oveson,Brown and Caldwell FROM: Brian Copeland, P.E. Monica Leal,EIT SUBJECT: City of Lake Oswego Land Use Application-Traffic Control Strategy Memorandum for the Waluga Reservoir 2 and FWP in Waluga Park 1.0. Introduction This memorandum identifies and evaluates the potential impacts to transportation facilities during the construction of the Waluga Reservoir 12 (WR2) and Finished Water Pipeline (FWP) in Waluga Park in the City of Lake Oswego, Oregon. It includes an inventory of existing transportation conditions for the roadways to be impacted by the WR2 and FWP construction, an estimate of WR2 and FWP construction traffic,proposed construction haul routes, and a sight distance evaluation for the WR2 site entrance on Carman Drive.Figure 1 shows the study area. 2.0. Existing Transportation Conditions The inventory of existing transportation conditions includes traffic volumes,and transportation facility characteristics for the roadways to be impacted by construction. 2.1. Existing Traffic Volumes Table 1 shows the available traffic counts for the key roadways within the study area. These traffic counts were obtained from the City of Lake Oswego web site' and the Boones Ferry Road Refinement Plane. 2.2. Transportation Facility Characteristics An inventory of the existing transportation facilities in the vicinity of the project was collected. Facility characteristics include roadway jurisdiction,functional classification, Average Daily Traffic (ADT),posted speeds, number of travel lanes, roadway widths, pedestrian and bicycle characteristics, and existing transit routes along key roadways within the study area. Table 2 shows a summary of the existing transportation facility characteristics for the for the key roadways within the study area. Source:City of Lake Oswego Traffic Counts Data.Website: http://www.ci.oswego.or.us/sites/default/files/lotraffic counts_map_-_201.0.pdf 2 Source:Boones Ferry Road Refinement Plan,2009 EXHIBIT F-9 LU 12-0044 411 .. . . A __...... CgR,,,„44, D R KRUSE WY MEADOi ru O ce '4- >- C% qc QG CO BONITA WY ` 9-P Reservoir-al SiteAccess Reservoir aQ- •Site a • • 7)( BURMA RD C'pR u '+ ....1 DOUGLAS WY %•.•' I� ^7,G Waluga LANEWOOD RD 0 Park d A OAKRIDGE 2O Rp• �mN bR if > 5 gL z LA �•o�, o m Oswego C0 Lake • WASHINGTON CT ]\,__ \\.., ' f lii LEGEND MKS Figure -Finished Water Pipeline(FWP) Study Area I) No Scale City of Lake Oswego Land Use Application - Traffic September 5, 2012 Page 3 of 9 Table 1: Existing Traffic Volumes AM Peak Hour PM Peak Hour Average Daily Traffic Count Location Year raffic Volumes Traffic ADT Traffic Volumes. (ADT) #20(200'south of 110(SB) 240(NB) roundabout)11( 2011 305(NB) 265(SB) 5,300 Carma 415(Total) 505(Total) #20(200'south of 449(NB) 313(NB) roundabout) (1) 2010 175(SB) 398(SB) 7,300 624(Total) 711(Total) #38(Westlake Dr.to 810(EB) 1,080(EB) Carman Dr.)(s) 2011 745(WB) 785(WB) 22,650 Kruse Way 1,555(Total) 1,865(Total) #38(Westlake Dr.to 776(EB) 1,120(EB) 2010 747(WB) 771(WB) 21,800 Carman Dr.)[1) 1,523(Total) 1,891(Total) oones I #11(Mercantile Dr.toIDB 732(EB) 856(EB) Ferry Rd. Kruse Way)(1) 2010 588(WB) 882(WB) 20,700 1320(Total) 1,738(Total) 219(EB) Oakridge Rd At Boones Ferry Road lzl 2009 N/A 133(WB) 3,500 352(Total) II 16(NB) Quarry Rd.4 At Boones Ferry Road(2) 2009 N/A 163(SB) 1,800 179(Total) Notes:N/A—Not available (1) Source:City of Lake Oswego.Numbers refer to City of Lake Oswego count#s (2) Source:Boones Ferry Road Phase 2 Refinement Plan Table 2: Roadwa Invent() Characteristics AIP iW 11rr Average Posted Number Approx' Existing Existing Roadway Roadway Functional Daily $ eed of Travel Lane Existing P Bike Transit Jurisdiction Class. Traffic Widths S/W { (ADT) (mph) Lanes (feet) Lanes Routes Carma Lake Major 2(one in Partial 1 (ii (east of Dr. Oswego Collector(2.) 7,400 35 each 12 reservoir No No direction) entrance) Partal, Multi- Trimet Krus Lake Major izl lanes4/5(two in Way Oswego Arterial(2) 21,800 35/40 each 12 Multi- Path Use Route Path Path #38 direction) i 4/5(two Trimet Boones Lake Major Arterial (11 lanes in Ferry Rd. Oswego (2) 20,700 30 each 12 Partial No Route direction) #38 Oakridge Lake i2) 2(one in 11 Rd. Oswego Local St 3,500 25 each (no Partial No No direction) striping) Quarr Lake Neighborhood 2(one in Rd. Oswego Collector(2) 1,800 25 each 11 No No No direction) Notes: i;(Source:City of Lake Oswego Traffic Count Data,2010 (')Source:City of Lake Oswego Transportation System Plan,June 1997 413 City of Lake Oswego Land Use Application-Traffic September 5, 2012 Page 4 of 9 3.0. Estimated WR2 Construction Traffic The WR2 construction will generate additional traffic volumes along the transportation network within the study area. The Construction Management Plan(CMP) includes construction volume estimates for the construction period. The estimated added WR2 construction traffic is broken down as follows: • Construction Management and Bussed Workers: Daily trips are expected to occur in the morning before 7:00 a.m. and in the late afternoon or evening at the end of the workday • Heavy Duty Pick-Ups, Delivery Trucks, Light Trucks, and Heavy Trucks: These construction trips are expected to occur randomly throughout the workday. Figure 2 shows the estimated WR2 construction trips for the construction period. The overall average number of one-way trips is estimated to be approximately 59 per day. However,the actual number of trips per day will vary based on construction activities and schedule. The busiest month of construction is expected to generate a maximum of approximately 123 one-way trips per day. Figure 2: Estimated Number of WR2 Construction Trips 140 - 120 - co 100 - a., o so A r. t, 60 - a a 40 1111 11111 20 - - O i Iii.. lJ� ��� P�� coe' 0 �o5 Oe� �a� ‹e' mat V- \ ��� P- .__I Fill and Excavation •Concrete General and Mechanical Workers Management Source:Construction Management Plan included as part of this application. 414 City of Lake Oswego Land Use Application- Traffic September 5, 2012 Page 5 of 9 4.0. Estimated FWP Construction Traffic The FWP construction will generate additional traffic volumes along the transportation network within the study area. The Construction Management Plan (CMP) includes construction volume estimates for the construction period. Figure 3 shows the estimated FWP construction traffic for the four-month construction period. The two first months of construction are expected to generate a maximum of approximately 78 one-way trips per day. The other two months of construction are expected to generate 17 one-way trips per day. As can be seen in reviewing Figures 2 and 3, the peak WR2 construction trips (Nov 2014)would not coincide with the peak construction trips for the FWP (Dec 2013/Jan 2014). Figure 3: Estimated Number of FWP Construction Trips 90 80 70 a 60 9- 50 b 40 • 30 • 20 10 0 Dec-13 Jan-14 Feb-14 Mar-14 sf Fill and Excavation ra General 3 Workers II Management Source:Construction Management Plan included as part of this application. 5.0. Proposed Construction Haul Routes The proposed haul routes for WR2 and FWP construction are shown in Figure 4. The WR2 construction-related trips will gain access to and from the site on Carman Drive. The FWP construction site access will be limited to the Waluga Park entrance off Quarry Road. The intent of the construction haul routes shown on Figure 4 is to use major arterials to the extent possible for construction-related traffic, and to keep this additional traffic off of local streets. 6.0. Sight Distance A sight distance evaluation was conducted for the existing Carman Drive access to/from the WR2 construction site. Carman Drive in the vicinity of the Waluga Reservoir access consists of two travel lanes, varied shoulder widths,vegetation along both sides on the road, and a posted speed of 35 mph. The horizontal curve adjacent to the site has a posted advisory speed of 25 mph in both directions. The 85th percentile speed along Carman Drive in the vicinity of the access point is 29 mph. 415 - CD , I \1 < . r C . ► I . , I �h3ligN Q R i I 76" 4' ,�1� KRUSE WY r • MEADOyis W y RD , . r� z D 4 D r ca BONITA WY Reservoir-7 7 13 G'A Site Access Reservoir -< QQ Site • GpFt�`A� o�� �.rIDQUGS AWY© BURMA RDI .00Waluga L4NEWOOD RD 0Park • • . • OAKRlD{, R9,Lv I\ R ui OR '(-v�. ? ��S• o �L�p F p� a �Qpi cci \JI�� sT op o , a • Oswego 0o 40 Lake . WASHINGTON CT :-- L\\7 r--_ _- LEGEND DKS Figure 4 -Finished Water Pipeline(FWP) -FWP To/From Construction Site ID Construction Haul Routes -WR2 To/From Construction Site No Seale City of Lake Oswego Land Use Application-Traffic September 5, 2012 Page 7 of 9 Available sight distance at the construction site access was field-measured considering the allowed movements at the site access intersection(based on the haul routes). These measured values were then compared to the American Association of State and Highway Transportation Officials(AASHTO)3 guidelines to determine if available sight distance would meet standards.Assuming only allowed movements dictated by the haul routes,the evaluation focused on the following two sight distance conditions: • Westbound Left Turns into Site: westbound drivers on Carman Drive must have clear sight lines to stopped westbound trucks waiting to turn left from Carman Drive into the WR2 site. Limited sight distance for westbound drivers could lead to rear-end collisions. • Northbound Right from Site: drivers leaving the site and turning right must have clear site lines to approaching eastbound traffic. Available intersection sight distance measurements at the site access for allowed movements are shown in Table 3 and Figure 5. Table 3 also shows the required sight distance for these movements. Although the advisory speed in the vicinity of the site access point is 25 mph, the posted speed of 35 mph was assumed for these calculations, since drivers were observed in the field traveling faster than the advisory speed.As shown in Table 3, sight distance requirements set forth by AASHTO would not be met for either of the two conditions due to the horizontal curve and tree foliage on both sides of Carman Drive. Table 3: Intersection Si!ht Distance Summa Criteria Stopping Sight distance Intersection Sight Distance Westbound left(in) Northbound Right(out) 1 Field measurement ail 225'iii 15041) 111 AASHTO standard based onn 250, 335' posted speed(35 mph) Standard Met? No No iji Notes: i1iAssumes proper vegetation control on both sides of Carman Drive 3 A Policy on Geometric Design of Highway and Streets,American Association of State Highway and Transportation Officials,2011. 417 City of Lake Oswego Land Use Application -Traffic September 5,2012 Page 8 of 9 1 C'uustruetiori Site Entrance /0 / C4RivAN OR o Z�,`', ii No Seale LEGEND - Decision Point 000'- Sight Distance(feet) p - Line of Sight Figure 5: Intersection Sight Distance The following have been identified as possible mitigation measures that may improve sight distance at the site access: • Adding temporary westbound left turn lane along Carman Drive. Based on a site evaluation, approximately 34 feet of pavement is available along Carman Drive at the WR2 site access. This is enough width to add a 12 ft. center turn lane and still maintain an 11' travel lane in each direction. The addition of this turn lane would provide storage for westbound vehicles waiting to enter the WR2 site,which would reduce the likelihood of westbound rear-end collisions. A temporary striping plan would need to be developed during final design to ensure alignment standards would be met. It is possible that a small amount of temporary widening would be needed to accommodate the transitions. • Temporary traffic signal: A temporary traffic signal could be installed at the site access point to allow construction traffic to safely enter and exit the WR2 construction site. Vehicle detection would be added for westbound left turning vehicles entering the site (assuming an exclusive left turn lane can be temporarily added) and for northbound vehicles leaving the site. Advanced signal heads should be installed as part of this signal installation to ensure the signal is visible to approaching traffic. The temporary traffic signal would consist of signal heads supported by wood poles and span wires, with a construction cost of approximately $80,000. The use of flaggers was evaluated to serve the same purpose as the temporary traffic signal but, considering the construction schedule, would be far more expensive than the temporary signal. 418 City of Lake Oswego Land Use Application- Traffic September 5, 2012 Page 9 of 9 A temporary work zone speed reduction along Carman Drive in the vicinity of the WR2 site access was considered.However, since there is no guarantee this will slow drivers and the posted advisory speed is already 25 mph(less than the 35 mph posted speed and less than the 85th percentile speed of 29 mph),this measure is not recommended. 7.0. Conclusion/Recommendations This memorandum identifies the potential impacts to transportation facilities during construction of the WR2 and FWP in Waluga Park in Lake Oswego, Oregon.The WR2 and FWP construction will generate additional traffic trips along the transportation network within the study area. During the peak month of construction activity,the WR2 site will add an additional 123 one-way trips per day to the roadway network. The FWP site will add an additional 78 one-way trips per day to the roadway network during its peak month. Construction-related trips will gain access to the respective sites along Carman Drive(WR2) and the Waluga Park parking lot entrance (FWP). Since sight distance requirements cannot be met at the WR2 site access along Carman Drive,the following mitigation measures are recommended during construction: • Adding temporary westbound left turn lane along Carman Drive.Temporarily restripe Carman Drive in the vicinity of the WR2 site access to provide a 12' wide westbound left turn lane and two 11' through travel lanes (one in each direction). A temporary striping plan will need to be developed during design to ensure alignment standards would be met.It is possible that a small amount of temporary widening would be needed to accommodate the transitions. • Temporary traffic signal: Construct a temporary traffic signal at the site access point to allow construction traffic to safely enter and exit the WR2 construction site. Include vehicle detection for westbound left turning vehicles entering the site (assuming an exclusive left turn lane can be temporarily added) and for northbound vehicles leaving the site. Advanced signal heads should be installed as part of this signal installation to ensure the signal is visible to approaching traffic. The temporary signal shall meet MUTCD, ODOT and City of Lake Oswego standards. Adding the temporary westbound left turn lane along Carman Drive and installing the temporary traffic signal at the site access should significantly improve operations and safety for construction vehicles entering and exiting the WR2 construction site. 419 420 Lake Oswego • Tigard Water Partnership sharing water• connecting communities Waluga Reservoir and Pipeline Land Use Application Submittal Section 09D Construction Blasting Overview Brown Caldwell 6500 SW Macadam Avenue,Suite 200 Portland,Oregon 97239 EXHIBIT F-10 LU 12-0044 • Q v �' 421 WALUGA RESERVOIR AND PIPELINE LAND USE APPLICATION CONSTRUCTION BLASTING OVERVIEW 1. Introduction Due to the presence of shallow bedrock in Waluga Park and nearby areas,it is anticipated that the contractor will elect to use explosives to excavate rock for installation of the finished water pipeline (MVP)in Waluga Park and for construction of the Waluga Reservoir 2 (WR2). This document outlines the construction activities and safety procedures associated with the use of explosives to aid in the excavation of rock. The contractor will be required to prepare a comprehensive and detailed Blasting Plan that will be subject to review and approval of the Partnership and City of Lake Oswego staff,including the Lake Oswego Fire Marshal,before any blasting will be permitted. The Blasting Plan will describe in detail the contractor's blasting qualifications and proposed approach to conduct all blasting in a safe and responsible manner. The Blasting Plan will provide a detailed proposal for how the contractor will conduct pre-blasting surveys,pre- blasting notification,blasting design,blasting monitoring,and associated safety procedures. 2. Blasting Personnel Qualifications The contractor will be required to obtain the services of an independent,qualified Blasting Specialist, experienced in controlled blasting techniques for similar projects in similar conditions. The Blasting Specialist will be responsible for preparing the Blasting Plan, supervising the installation of instruments and explosives, supervising the actual blasting,ensuring that all planned monitoring and safety procedures are followed,and interpreting the recorded results of each blast. The Blasting Specialist will be required to have at least five (5) years of blasting experience and be able to demonstrate satisfactory experience on three (3) similar projects. Similar projects must include blasting within a close distance of occupied dwellings. Experience will be considered satisfactory only if good relations with owners of nearby private structures and the public were maintained and each blast was conducted in a safe and responsible manner. The Partnership will have the full authority to approve or deny the contractor's proposed Blasting Specialist. The Blasting Specialist and associated team members shall be properly qualified and licensed in accordance with applicable federal, state,and local regulations. The contractor shall not allow any prohibited persons as defined by the BATF (27 CFR Part 555) to transport,handle,or use explosive materials. The contractor shall use experienced and qualified personnel for conducting Pre-Blast Condition Surveys. Personnel conducting pre-blast surveys will be required to have at least 5 years of experience conducting pre- blast condition surveys of structures and be able to demonstrate satisfactory experience on at least 3 similar projects. Personnel conducting pre-blast surveys shall be the employees of a firm regularly engaged in conducting such surveys and shall not be an employee of the contractor,the contractor's Blasting Specialist, or any explosives manufacturer or distributor. Lake Oswego •Tigard Brown Water Partnership i Caldwell 3?W.my:Wei•NrIFI Ptrr9<aI 1RiJ"Tei 422 Lake Oswego Waruga Reservoir and Pipeline Submittal Section 09 Land Use Application Construction Management Plan 3. Pre-Blast Survey Pre-Blast Surveys shall be conducted by an'independent third party,which specializes in Pre-Blast Surveys, and the construction management team. The Pre-Blast Surveys shall consist of obtaining photos and video footage of structures which may be subject to blasting damage as well as any other structural condition assessments that may be deemed applicable. Pre-Blast Surveys shall be conducted on all structures within a reasonable distance of the planned blasts;the actual specified distance will be determined by the Partnership's engineer and included in the construction contract documents. All Pre-Blast Surveys will be conducted prior to the start of blasting operations,and will be submitted to the Partnership's engineer seven (7) days prior to blasting for review and approval. No blasting will be allowed without an approved Pre-Blast Survey having been conducted. In the rare case of property damage due to blasting,Pre-Blast Surveys will be compared to Post-Blast surveys and used to determine the extent of damage that resulted from the blast. 4. Pre-Blast Notifications An initial pre-blast letter of notification will be sent to all property owners and residences within the specified distance two (2)weeks prior to blasting. A second pre-blast notification will be provided to all residences within the same specified distance within 48 hours prior to the scheduled blasting. Immediately prior to blasting,the Blasting Specialist and other members of the contractor's blasting team will verbally notify the surrounding neighbors that blasting construction activities will be taking place. The Blasting Specialist and team will secure the blast site by ensuring that no personnel are located within the perimeter of the designated blasting area. Once all personnel are accounted for,the Blasting Specialist will begin the standard industry blasting signals. A clearly audible air horn will be utilized for the standard blast warning procedure as follows: 1. Five minutes prior to the blast—a series of long signals 2. One minute prior to the blast—a series of short signals 3. All clear signal—a prolonged signal following blast site inspection 5. Blasting Design and Monitoring Each blast will be designed to ensure that seismic vibrations and air blast overpressures are kept well below limits that would cause damage to nearby structures. Seismic vibrations and air blast overpressure will be controlled and monitored using blasting seismographs. Vibrations and air blast overpressure will be limited by controlling the weight of explosives detonated in any eight millisecond time period. The industry standard Blast-Scaled Distance Equation will be used as a guide. 6. Safety Procedures This section describes key safety procedures that will be employed by the contractor and Blasting Specialist prior to and during blasting operations. The Blasting Plan prepared by the Blasting Specialist will contain a rigorous and more detailed list of required safety procedures that will be employed throughout blasting activity. coLake Oswego •Tigard Brown Arlo Water Partnership 2 Caldwell lhONr�cf 1MG�p`,'conoecrn9 col 4/nVMAei 423 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09 Land Use Application Construction Management Plan The Blasting Specialist will have the authority and responsibility to control access to the blasting area during blasting operations. The Blasting Specialist will be required to supervise all blasts and shall have the authority and responsibility to stop blasting operations at any time that he or she feels that an unsafe condition exists. The Blasting Specialist will be required to conduct a pre-blasting safety meeting with the contractor's personnel,the Partnership's construction inspection staff,and applicable City emergency response staff prior to the commencement of blasting. This meeting will be used as an opportunity to review key elements in the Blasting Plan,including monitoring and safety procedures. Additional safety meetings will be held regularly throughout the blasting process to review and revise safety procedures. Explosives will be handled, transported,used,controlled,and monitored as prescribed by the most stringent of rules specified in the referenced OSHA and ATF Standards, Oregon's Office of State Fire Marshal explosives regulations,City of Lake Oswego codes and ordinances,and all applicable specifications in the construction contract documents. The contractor and Blasting Specialist shall mark all day storage locations within the construction area and explosive transport vehicles with signs stating clearly and boldly, DANGEROUS EXPLOSIVES. No overnight storage of explosives will be allowed within Lake Oswego city limits. Only the amount of explosives to be used each day shall be allowed on the construction site. Unused explosives and explosive product packaging materials shall be removed from the construction area at the end of the working day. All explosives that are loaded within blast holes are to be used the day they are loaded. During explosive loading and prior to each blast,signs advising that explosive loading is in progress will be posted at all access points to the blasting site. Access to the site will be restricted to those required to do the loading,with the exception of supervisory contractor personnel and representatives of the project manager. During this critical period of time, the blasting area will be guarded by members of the Blasting Specialist's team to ensure that no unauthorized access occurs and that the area remains under tight control. The contractor and/or Blasting Specialist shall erect warning signboards of adequate size that clearly state that blasting operations are taking place in the area. Warning signs shall be clearly visible at all points of access to the area and shall clearly describe the audible signal system for warning of impending blasts. During blasting,the Blasting Specialist will cover the blast area with rubber mats and other protective material to prevent scattering of rock fragments above ground and outside of the blast zone. Blasting mats shall weigh at least 25 pounds per square foot. Mats shall be a minimum of 6 feet by 10 feet and shall be equipped with suitable placement attachments. Flying rock fragments will not be tolerated during any blast and shall be controlled through proper blasting design and responsible blasting management. 7. Conclusion This document highlights key aspects of the blasting procedure that will ensure that all blasting work required for rock excavation in Waluga Park and the Waluga Reservoir Property will be conducted efficiently and safely. The qualified Blasting Specialist will be required to prepare a more detailed Blasting Plan,which will be subject to the review and approval of the Partnership's engineer and City staff, such as the Lake Oswego Fire Marshal. By following the guidelines presented herein and the Blasting Specialist's Blasting Plan,the Partnership is confident that blasting work will be conducted in a safe manner that will limit negative impacts to residents. Blasting was recently conducted to excavate rock for the City of Lake Oswego's Bryant Road Pump Station during the summer of 2010.Follow this link for a You-Tube video of one of the Bryant Road Pump Station blast events: http://www.youtube.com/watch?v=48e5mzPY_y14 Lake Oswego •Tigard Brown:,, Water Partnership 3 Caldwell slsirriaTwv a curl mainyCk i,I q4rt 424 ENVIRON June 11, 2013 ENVIRON Project No: 29-27143B MEMORANDUM To: Pete Oveson, Brown and Caldwell cc: Joel Komarek, City of Lake Oswego From: Kristen Wallace, ENVIRON Project Name: Lake Oswego/Tigard Water Partnership (LOTWP) Subject: Noise Study—Waluga Reservoir This memorandum presents the results of our noise study for the proposed reservoir to be constructed north of Waluga Park in Lake Oswego as part of the Lake Oswego/Tigard Water Partnership. Project Description The City of Lake Oswego operates an existing 4.0 million gallon (MG) reservoir on a site located off of Carman Drive, just north of Waluga Park in Lake Oswego, Oregon. The proposed project will add a second, 3.5 MG reservoir to the site. The existing and future reservoirs are shown in Figure 1 and Figure 2, respectively. .4' 44P , i erTi?E Sl7UNOAp1 i -- ,; . • E%i5T,4G VlRI . ' . ' , ':':- ''..' .' ', ;.1:::, .i ' S: iiirw,c, . . , p • . .. - ea ...,,_ , . , . ..,„it, . . , -- I 1 • . ;: it • 4:1 :t " ' 1 - ' ', •' Jo `! .rigi of " • + ��X id • . 4: •� ,$� .t. ig I 1 ,. Figure 1. Existing Waluga Reservoir Layout 19020 33rd Ave W,Suite 310,Lynnwood,WA 98036 T:(425)412-1800 F:(425)412-1840 EXHIBIT F-11 LU 12-0044 425 S Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan demolition,grading, and site clearing,will occur prior to the installation,inspection,and approval of fencing, signage,and other protective measures at the work area.Temporary drainage and surface water runoff facilities will be used if necessary to ensure that runoff does not negatively impact sensitive Iands. 5.3 Erosion Control Erosion control figures are included in Section 8 of this land use application.The contractor will be required to use best management practices (BMPs) to avoid transport of soils to paved streets,drainage systems,and to adjacent properties.Wheel washes and perimeter controls such as storm inlet protection and sediment fencing are typical BMPs.Additionally, the contractor will be required to implement secondary containment and spill prevention BMPs in areas where equipment mobilization and transport will occur so that measures are in place to prevent and effectively clean up any fuel spills. The requirements for erosion and sediment control are defined in Lake Oswego Municipal Code Chapter 52. In accordance with Article 52.02.040,an erosion control permit will be required for construction at the site. Article 52.04.010 notes that obtaining an Erosion Control Permit requires the applicant to submit an Erosion Control Plan (ECP) for review and approval.An ECP will be prepared with the final design and submitted to the City for review and approval prior to construction.A conceptual ECP is included in Section 8 of this application. The ECP will consist of the following: • Site description including a map of the topography and a narrative description of the soil characteristics • Description of proposed changes affecting erosion • Proposed erosion control measures and practices • Planting plan(where applicable) • Schedule of installation • Additional information (as deemed necessary by the City Manager) • Designation of an ECP Manager Erosion prevention and sediment controls will be provided on site during construction through implementation and maintenance of BMPs. Standard construction BMPs for erosion and sediment control will be used throughout the project site per Section 8 of this application.The ECP will be prepared in accordance with Article 52.02.030,which requires that the plan be designed in accordance with the Erosion Prevention and Sediment Control-Planning and Design Manual on file with the City's Engineering Division. Prior to the start of construction,construction trailers, a designated area for construction worker parking,and locations for material storage and stockpiling will be established.A pre-construction meeting will be held to train and inform construction personnel on erosion and sediment control BMPs.The designated project site area boundary will be described during this meeting. In conjunction with the installation of perimeter controls,areas where natural vegetation is to be preserved will be identified specifically,and flagged and protected via temporary construction fencing.The construction site entrances will be comprised of gravel. After erosion control measures are installed,heavy construction equipment will be mobilized at the site. *Water Lake Oswego•Tigard Brown Partnership 7 Caldwell lharvrgw te:comm.-twigconrrnwWaiFn 426 ENVIRON Pete Oveson Noise Study—LOTWP Waluga Reservoir June 11, 2013 Page 2 of 4 SrrE BouNPARY t 0 ' S 3 `• .14)I • Al • LIMIT OF4ANDSCAPf �" EXISTING WWI ti4 AESTORATION , ' • •"1 DETENTION PONDS �y �;� s. . ' i s 4 I 'r I C Aiii ` ACCESS ���► ACCESS I } - - . 141.,J, , I E � I . . I 1 .� 0H7 I ,. 'y '- �. Sction/EfevatignA 4114 sty ., tt , . �y . 4 I Figure 2. Proposed Future Waluga Reservoir Layout Applicable Noise Limits The Waluga Reservoir site is located in the city of Lake Oswego. The Lake Oswego Municipal Code identifies restrictions on certain types of noises. Section 34.10.537 of the code (LOMC 34.10.537) restricts loud, disturbing, or unnecessary noise. Section 34.10.539 (LOMC 34.10.539) identifies specific noise prohibitions, primarily due to nuisance noises (e.g., animals, vehicle horns, sirens, amplified music). In addition to identifying prohibited nuisance-type noises, LOMC 34.10.539 restricts permitted construction in residential zones outside the hours of 7 AM to 6 PM Monday through Friday and 8 AM to 6 PM Saturday. Construction may be allowed 10 AM to 6 PM Sunday and specified holidays only with a special permit from the City. The City of Lake Oswego has not identified quantitative noise limits that apply to construction noise. 427 ENVIRON Pete Oveson Noise Study—LOTWP Waluga Reservoir June 11, 2013 Page 3 of 4 The City of Lake Oswego also has not identified quantitative noise standards with regards to operational noise. Therefore, the quantitative noise standards established by the Department of Environmental Quality (DEQ) in the Oregon Administrative Rules (OAR 340-035) apply to operation of this project. OAR 340-035-0035 regulates noise from commercial and industrial land uses near noise sensitive receivers. The applicable noise limits are shown in Table 1. Table 1. Oregon Industrial and Commercial Noise Source Standards Statistical Allowable Statistical Noise Levels in Any One Hour Level Daytime Nighttime 7AM -10PM 10PM -7AM Lso 55 50 L10 60 55 Li 75 60 Source:OAR 340-035-035 The Lso, L10, and Li statistical noise descriptors are the sound levels exceeded 50%, 10%, and 1%of any 1-hour period, respectively. Operation Noise Operation of the proposed reservoir is expected to produce little to no noise beyond the site boundaries. Therefore, noise impacts due to operation of the reservoir are not anticipated, and operational noise is not considered further. Construction Noise The construction site is located adjacent to Waluga Park and is surrounded by numerous residences. The major construction tasks for this project are expected to include: • Clearing and site preparation • Construction of on-site roads, stormwater piping, etc. • New tank construction • Installation of piping and connections to existing pipeline • Existing tank modifications • Restoration and cleanup The above tasks would require the use of standard heavy equipment and some louder but intermittent activities such as rock excavation, rock blasting, and concrete pumping. Because of the potential for construction activities to affect the neighbors, the following BMPs and general noise mitigation practices are identified. 1. Restrict construction activities to daytime hours. Note: Section 34.1 0.539 of the City of Lake Oswego Municipal Code restricts construction activities in residential zones to between the hours of 7 AM and 6 PM Monday through Friday and 8 AM and 6 pm on Saturday. 428 ENVIRON Pete Oveson Noise Study—LOTWP Waluga Reservoir June 11, 2013 Page 4 of 4 2. Use properly sized and maintained mufflers, engine intake silencers, and engine enclosures. Construction contracts can specify that mufflers be in good working order and that engine enclosures be used on equipment when the engine is the dominant source of noise. 3. Minimize idling of heavy mobile equipment and trucks. Turn off truck and equipment engines when not in active use. 4. Give advance notice to nearby residents of the time periods when particularly noisy work will be occurring. Particularly noisy work could include rock excavation and blasting activities and concrete pumping. 5. Minimize banging tailgates, metal clangs, etc. with procedural methods or with the use of rubber gaskets. 6. Require onsite truck and construction equipment to minimize reverse direction travel to reduce the use of noise generated from OSHA-required backup alarms. If feasible, replace pure-tone, fixed-level backup alarms with ambient-sensing and/or broadband backup alarms. One example of a suitable model is the BBS-TEK Brigade Model BBS-92. Note:Although backup alarms are exempt from noise ordinances because they are safety warning devices, these devices emit some of the most annoying sounds from a construction site. Ambient-sensing backup alarms broadcast a warning sound loud enough to be heard over background noise but without having to use a preset, maximum volume. Broadband backup alarms (i.e., alarms that emit sound that covers a wide range of frequencies instead of single, pure tone sound) have also been found to be very effective in reducing annoying noise from construction sites. 429 IraLake Oswego • Tigard Water Partnership sharing water• connecting communities Waluga Reservoir and Pipeline Land Use Application Submittal Section 09A Construction Management Plan Brown Caldwell 6500 SW Macadam Avenue,Suite 200 Portland,Oregon 97239 " EXHIBIT F-12 ear •' LU 12-0044 --�~ fir 'Or v• y r� PC W its (, Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan TABLE OF CONTENTS 1. INTRODUCTION 1 2. PROJECT OVERVIEW 1 2.1 FWP in Waluga Park Overview 1 2.1.1 FWP Construction Overview 1 2.1.2 FWP Post-Construction Impacts 1 2.2 WR2 in Waluga Reservoir Property Overview 2 2.2.1 WR2 Construction Overview 2 2.2.2 WR2 Post-Construction Impacts 2 3. PROJECT SCHEDULE 2 3.1 FWP Construction Schedule 3 3,2 WR2 Construction Schedule 3 4. CONSTRUCTION METHODOLOGY 3 4.1 FWP Construction Method 3 4.2 WR2 Construction Method 4 5. CONSTRUCTION MANAGEMENT 6 5.1 Preconstruction Assessment 6 5.2 Construction Staging and Work Areas 6 5.3 Erosion Control 7 5.4 Construction Noise Impacts and Proposed Mitigation 8 5.5 Rock Blasting 8 5.6 Construction Access and Traffic 9 5.7 Construction Notification and Coordination 9 5.8 Tree Protection Plan 9 6. CONCLUSION 10 tire Lake Oswego •Tigard Brown ,,c, Water Partnership I Caldwell ShJ',IV tro:ef•covoi{pinyco-nem,'n.141 431 WALUGA RESERVOIR AND PIPELINE LAND USE APPLICATION CONSTRUCTION MANAGEMENT PLAN 1. Introduction The Lake Oswego—Tigard Water Partnership (Partnership)was formed to replace existing aging infrastructure, to increase capacity of Lake Oswego's existing water system for the next 75 years,and to serve as the primary source of water to Tigard in the future.The Partnership will upgrade the following key components of the Lake Oswego and Tigard water systems:Raw Water Intake Pumping Station,Raw Water Pipeline,Water Treatment Plant,Finished Water Pipeline (FWP),Waluga Reservoir 2(WR2),and Bonita Pump Station. This Construction Management Plan(CMP) discusses the construction activities,potential construction impacts,and construction impact mitigation associated with the FWP in Waluga Park and WR2 in property owned by the City of Lake Oswego (Waluga Reservoir Property).This document does not address any construction activities or impacts associated with the project outside of Waluga Park or the Waluga Reservoir Property;all other construction impacts and management for improvements within Lake Oswego have been addressed via separate land use applications. 2. Project Overview There are two distinct construction phases for the Waluga Reservoir and Waluga Park Pipeline projects, the FWP in Waluga Park and the WR2 in Waluga Reservoir Property. 2.1 FWP in Waluga Park Overview The 24-inch pipeline will be constructed through Waluga Park to provide increased capacity to the existing Waluga Reservoir 1 (WR1) and proposed WR2.The pipeline alignment through Waluga Park will be approximately 1,200 feet in length.This new pipeline alignment will enter Waluga Park at the Quarry Road parking lot entrance,will traverse west through the parking lot,will follow an established trail up into the "quarry"area of the Park,and will then traverse northwest through lightly wooded forest to the WR2 location. See Section 18 of this application for figures that show the pipeline alignment through Waluga Park. 2.1.1 FWP Construction Overview FWP construction will generally consist of equipment mobilization,trench excavation,pipe assembly,trench backfill,and restoration. Section 4.1 of this document contains further details of the construction methodology for this work. 2.1.2 FWP Post-Construction Impacts The pipeline will be buried more than 3 feet below paved and unpaved areas.Therefore,the FWP will not be visible to the public following construction.The only visible part of the project will be the intermittent manhole lids and vault covers (similar to those required for sanitary or storm utilities)located over pipeline appurtenances along the alignment. ,, Lake Oswego •Tigard Brown:, Water Partnership i Caldwell sharing water.connecting u,irn NJes 432 Lake Oswego Waiuga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan 2.2 WR2 in Waluga Reservoir Property Overview WR2 will be constructed to the northwest of the existing WR1 within the Waluga Reservoir Property.WR1 currently provides 4.0 million gallons of potable water storage serving the Waluga Pressure Zone in the City's drinking water system.WR2 will be built to increase the overall storage capacity of the Lake Oswego drinking water system by 3.5 million gallons and to assist in meeting the long-term water supply demands of Lake Oswego and Tigard. See figures in Section 17 of this application for the proposed layout of WR2 and existing WR1. 2.2.1 WR2 Construction Overview WR2 construction will generally consist of site preparation,reservoir construction,modifications to existing infrastructure,and restoration. See Section 4.2 of this document for further construction methodology details. 2.2.2 WR2 Post-Construction Impacts The general layout of the WR2 structure is shown in Section 17 of this land use application.The completed site will have the following access points and pathways: • The main gated access for operations and maintenance personnel will be off of Carman Drive.A gate and access road will lead to WR2. • An onsite 10-foot-wide maintenance walkway connecting WR2 to WR1. • The existing access to WR1 from Parkhill Street will be maintained.A new bar gate will be installed to replace the existing chain gate. Project yard piping will be installed underground.Intermittent pipe appurtenances and vault structures will be visible throughout the site.Additionally,a reservoir overflow pond will be visible on the site and will provide detention of any overflow from WR2. See Section 17 of this land use application for figures showing these project components. 3. Project Schedule Construction and site restoration for FWP and WR2 activities described in this land use application may start as early as November 2013 and will end June 2015. FWP construction is anticipated to occur during the winter"off-season"months for Waluga Park between November and February in either 2013/2014 or 2014/2015 and WR2 construction is anticipated to occur between April 2014 and June 2015. See Table 1 for anticipated start and stop dates for each construction phase. Table 1. Project Schedule by Construction Phase Construction Phase Anticipated Start Anticipated End Estimated Duration November 2013 or February 2014 or 4 Months(winter 2013/2014 FWP in Waluga Park November 2014 February 2015 or winter 2014/2015) WR2 in Waluga Reservoir April 2014 June 2015 15 Months Property 0Dike Oswego •Tigard Brown trio Wager Partnership 2 Caldwell Jr,„f„1Q wee?.cc1neci In9 iUPIYMP)T. $ 433 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan 3.1 FWP Construction Schedule The anticipated FWP construction duration in Waluga Park is four months between November and February of either 2013/2014 or 2014/2015.The actual pipeline construction activity is anticipated to only last for approximately 2 months and restoration construction activities axe anticipated to last for an additional 2 months (see Table 2).Based on consultation with potential contractors,the pipeline installation rate is estimated at an average of 50 linear feet per day.This installation rate includes all items listed in Section 4.1 of this document. Staging in the Waluga Park parking lot is anticipated to occur throughout this four month period as discussed in Section 5.2 of this document. Final parking lot pavement restoration,including drainage improvements,will occur in a separate construction activity that will follow after all other pipeline installation activities are finalized and will be weather-dependent. Table 2, FWP Schedule in Waluga Park by Construction Activity Construction Activity Anticipated Start Anticipated End Estimated Duration November 2013 or November December 2013 or December 2 Months(winter 2013/2014 Pipeline Installation 2014 2014 or winter 2014/2015) Pipeline Construction Area January 2014 or January 2015 February 2014 or February 2 Months(winter 2013/2014 Restoration 2015 or winter 2014/2015) 3.2 WR2 Construction Schedule The anticipated WR2 construction duration is 15 months between April 2014 and June 2015. WR2 construction can be divided up into three general construction activities with the anticipated schedule summarized in Table 3.Removal of existing buildings will occur prior to April 2014.Trees in the Waluga Park Property are regulated by the Migratory Bird Treaty Act which strongly discourages tree removal between the dates of February 15 and October 15 of each year.Therefore,tree cutting is anticipated to occur outside the provided schedule and prior to February 15,2014. Table 3. WR2 Schedule by Construction Activity Construction Activity Anticipated Start Anticipated End Estimated Duration Reservoir Site Preparation April 2014 May 2014 2 Months Reservoir Installation June 2014 April 2015 11 Months Reservoir Site Restoration May 2015 June 2015 2 Months 4. Construction Methodology This section describes the construction methods that will be used for each construction phase. 4.1 FWP Construction Method The following basic steps will be used for the Pipeline Installation construction activity in the Waluga Park parking lot on a daily basis: 1. Install appropriate temporary tree protection and erosion control measures 0 Lake Oswego •Tigard Brown Water Partnership 3 Caldwell stiu lag as.ei•con/wog co Meni./.? r�et 434 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan 2. Saw cut pavement to the correct width, approximately 4 to 5 feet 3. Excavate the trench with a track-mounted excavator 4. Place excavated material in dump trucks and haul to approved offsite disposal area 5. Import crushed rock in dump trucks to the site for use as pipe bedding and trench backfill 6. Place first lift of pipe bedding material (crushed rock)using loader and compact with mechanical methods 7. Deliver and stage pipe along trench 8. Install pipe,connect joints together,and conduct joint inspections and tests 9. Backfill trench pipe zone with crushed rock and compact the material in lifts with mechanical methods 10. Place and compact additional backfill up to the bottom of pavement section 11. Place and compact aggregate road base and pave over the trench. Contractor will use a temporary pavement surface if needed 12. Remove construction equipment,materials,and temporary tree protection and erosion control measures from the work area The following basic steps will be used for the Pipeline Installation construction activity in unpaved areas within Waluga Park on a daily basis: 1. Install appropriate temporary tree protection and erosion control measures 2. Excavate the trench with a track-mounted excavator 3. Place excavated material in dump trucks and haul to approved offsite disposal area 4. Import crushed rock in dump trucks to the site for use as pipe bedding and trench backfill 5. Place first lift of pipe bedding material(crushed rock) using loader and compact with mechanical methods 6. Deliver and stage pipe along trench 7. Install pipe,connect joints together,and conduct joint inspections and tests 8. Backfill trench pipe zone with crushed rock and compact the material in lifts with mechanical methods 9. Place and compact additional backfill up to the ground surface 10. Remove construction equipment,materials,and temporary tree protection and erosion control measures from the work area The following activities will be included in the Pipeline Construction Area Restoration construction activity: 1. Restore pathways and all disturbed landscaping and surface features to in accordance with Lake Oswego Parks Department standards 2. Install parking lot drainage improvements,restore and repave the entire parking lot from curb to curb in accordance with Lake Oswego Parks Department standards 4.2 WR2 Construction Method The following activities will be included in the Reservoir Site Preparation construction activity for the WR2: 0 Lake Oswego•Tigard Brown Water Partnership 4 Caldwell 435 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan 1. Removal of existing City-owned buildings associated surface concrete,and septic systems.This activity may occur prior to the anticipated start date of April 2014. 2. Removal of trees and vegetation authorized under approved land use application.This activity may occur prior to the anticipated start date of June 2014 to comply with the Migratory Bird Treaty Act (U.S. Fish and Wildlife Service),which strongly discourages tree cutting between February 15 and October 15. 3. Installation of temporary construction roadways,erosion control measures,site security measures, fencing,contractor construction offices,and traffic control mitigation. The following activities will be conducted as part of the Reservoir Installation construction activity for the WR2: 1. Install stormwater piping and connect to an existing offsite stormwater system 2. Construct WR2 reservoir a. Excavate and shape new reservoir subgrade b. Place structural fill c. Construct subdrain system floor slab d. Place drain rock e. Construct tank floor f. Form/pour walls g. Final wall cure h. Stress the tank,if applicable i. Form/pour roof slab j. Remove roof falsework k. Clean and seal inside/outside of tank 1. Clean/fill reservoir and test 3. Build concrete valve vaults and dechlorination manhole 4. Install water and overflow piping,control valves,and appurtenances from WR2 to the FWP 5. Establish electrical service and reservoir controls 6. Establish radio communication with existing Lake Oswego water system and treatment plant 7. Disinfect reservoir and piping 8. Upgrade the existing intertie connection at Parkhill Street 9. Commission WR2 and place into service 10. Take WR1 offline for retrofit and piping improvements 11. Make modifications to WR1 piping and controls 12. Commission WR1 and place into service The following activities will be conducted as part of the Reservoir Site Restoration construction activity fox the WR2: 1. Final site grading per the Stormwater and Drainage Report in Section 13 of this land use application and the Grading and Drainage Plan Figure in Section 14 of this land use application. Lake Oswego-Tigard Brown AND Water Partnership 5 Caldwell sharing wyaNf•cot lofcsov corrfr ootr f 436 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan 2. Landscape restoration and tree mitigation as indicated in Sections 6 and 7 of this land use application. 3. Removal of temporary construction installations including construction offices, site fencing, temporary site roads,erosion control measures. 5. Construction Management This section describes procedures to be followed during construction of the WR2 in the Waluga reservoir Property and FWP in Waluga Park. 5.1 Preconstruction Assessment The condition of the existing streets,landscaping,vegetation, fencing,and other structures within Waluga Park,the Waluga Park Property,and all areas adjacent to construction areas will be catalogued during the preconstruction survey with photographs and video.The Partnership will restore all streets and parking lots consistent with City standards after the FWP and WR2 are installed. Although damage to private property is not anticipated,damaged landscaping, fences,and/or structures on public or private property will be restored to existing or better condition. In the event that damage to private property occurs,the contractor will be required to coordinate with residents and businesses to ensure that final restoration is equal to or better than the pre-construction conditions and in accordance with the property owner's reasonable expectations. A separate Pre-Blast Survey will be conducted in the event that the contractor elects to use blasting to excavate shallow bedrock.This survey will be conducted by an independent third party,who specializes in Pre-Blast surveys.A Pre-Blast survey will be used to determine the extent and validity of any claims that property damage resulted from blasting. See Section 9C of this land use application for more information regarding blasting. 5.2 Construction Staging and Work Areas Construction staging and stockpiling for the FWP in Waluga Park will occur in the Waluga Park parking lot. Construction of the FWP will occur during the park's"off-season"and will result in a temporary closure of the parking lot.The contractor will use the parking lot and limits of disturbance to store equipment and stockpile materials during open-cut pipeline construction between November and February.The parking lot will be inaccessible during this period of time;however,pedestrian access to the park will be maintained for all areas not designated as construction work areas. Construction staging and stockpiling for WR2 will be located within the limits of disturbance as shown in the Construction Staging Plan in Section 17 of this Iand use application. It is anticipated that most excavated materials will be removed from the site. Most stockpiled materials will be imported backfill and foundation sub-grade materials.Additional materials located in the staging and stockpile areas will include mechanical piping,reinforcing steel and other construction materials.All contractor equipment will be stored within the limits of disturbance.The limits of disturbance are clearly defined in the Construction Staging Plan in Section 17 of this land use application and are located to avoid disturbance to significant trees. A temporary six foot high construction fence and appropriate temporary signage will clearly delineate all staging areas.All applicable RC,RP boundaries,and individual trees that will require tree protection will be located and staked by a qualified professional prior to placement of other fencing and/or protective measures and the start of construction.The site shall be inventoried for hazardous materials,debris,and noxious materials and all such materials will be removed prior to construction. No construction work,including / Lake Oswego•Tigard Brown 1 Water Partnership 6 Caldwell 7rnv n+g,riep•UTlnnevi nffcoal;m.”.re's 437 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan In addition to the measures described above,other erosion and sediment control BMPs may be considered for site-specific application,including biofilter bag,check dams,sediment control mats,and wattles as deemed appropriate. 5.4 Construction Noise Impacts and Proposed Mitigation Construction noise will be limited in accordance with Lake Oswego City Municipal Code,which restricts normal construction activities in residential zones by limiting work hours. Environ prepared a Noise Study Memorandum that is included in Section 09B of this land use application. Please refer to this memo for a more detailed analysis of noise impacts and proposed mitigation. Normal construction work hours will be as follows: • Monday through Friday 7 a.m.to 6 p.m. • Saturday 8 axn. to 6 p.m. • Sunday and restricted holidays:no work is allowed without an exemption approved by the City Manager. The following BMPs will be used to mitigate construction noise to the greatest extent possible: • Use properly sized and maintained mufflers,engine intake silencers, and engine enclosures. Construction contracts will specify that mufflers be in good working order and that engine enclosures be used on equipment when the engine is the dominate source of noise. • Minimize idling of heavy mobile equipment and trucks.Turn off truck and equipment engines when not in active use. • Require onsite truck and construction equipment to minimize reverse direction travel to reduce the use of noise generated from OSHA-required backup alarms. If practical,replace pure-tone, fixed-level backup alarms with ambient-sensing,broadband backup alarms. • Minimize banging dump truck tailgates with procedural methods or with the use of rubber gaskets. Due to the presence of rock within Waluga Park and the Waluga Park Property,rock excavation may be required intermittently throughout both the FWP and WR2 construction phases. Rock excavation typically occurs by two construction techniques: blasting or mechanical breaking.All blasting or breaking will be done during normal work hours and residents will be provided advanced notice per Section 5.7 of this document. If blasting is employed,the contractor will be requited to abide by all permits required by the City and other relevant agencies. Please refer to Section 9C in this land use application for more information regarding blasting. 5.5 Rock Blasting Due to the presence of shallow bedrock in Waluga Park and nearby areas, the contractor may elect to use controlled demolition (explosives) to excavate rock for installation of the pipeline in Waluga Park or WR2 in the Waluga Reservoir Property.The contractor will be required to obtain the services of a qualified Blasting Specialist to supervise all blasting work and prepare an approved Blasting Plan.The Blasting Specialist shall be licensed in accordance with applicable federal,state, and local regulations and will be required to conduct blasting according to all federal, state,and local regulations.Please refer to the Construction Blasting Overview in Section 9C of this land use application for more information. 7,40 Lake Oswego •Tigard Brown Water Partnership a Caldwell 438 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan 5.6 Construction Access and Traffic The majority of construction site access for the FWP phase will be limited to the Waluga Park parking lot entrance off of Quarry Road.A small amount construction access will be required via Parkhill Street to construct a small portion of the FWP northwest of the"quarry"area of the park and to make final connections between the FWP and WR2. The majority of construction site access for the WR2 phase will be limited to a site entrance off of Carman Drive. The construction site off of Carman Drive will modify an existing unimproved driveway.The previous use of this driveway entrance was for access to two buildings.These buildings will be demolished prior to construction. Carman Drive within the vicinity of the construction entrance is a two-lane roadway,with narrow shoulders and vegetation along each side. A temporary traffic light and turn lane will be installed on Carman Drive at the WR2 construction entrance to mitigate sight distance concerns as trucks enter and exit the roadway at this location.During construction of the WR2 distribution piping,modifications to WR1,and a final connections to the FWP in Waluga Park,construction vehicle traffic will access the site via Parkhill Street.This construction traffic willl include heavy vehicles such as 10-wheel dump trucks for excavation and fill,large equipment deliveries,and heavy materials deliveries for short intermittent durations. Construction generated traffic will fluctuate throughout the FWP and WR2 construction schedules.The maximum anticipated construction traffic during the project from the WR2 construction phase is estimated to be approximately 60 round trips per day,this value includes all heavy trucks (for excavation and fill, equipment deliveries,etc.) and passenger vehicles (for management and worker commuting,construction inspection,etc.) required for the project.This level of construction traffic is only expected for a short duration of the project and then only on exceptionally busy work days.To put this value of traffic trips in perspective,Kruse Way and Boones Ferry currently each experience approximately 10,000 round trips per day of normal vehicle traffic.The maximum daily traffic from the WR2 phase would result in a 0.6 percent increase in traffic on either Kruse Way or Boones Ferry.Therefore,the increase in traffic in the vicinity of the project due to construction is not considered sufficient enough to warrant additional analysis. 5.7 Construction Notification and Coordination All public agencies,commercial property owners and tenants,and residents will be notified no less than 2 weeks in advance of initial construction activities occurring within the vicinity of any affected property or facility.Notification methods may include mail,e-mail,door hangers,phone calls,or a combination of these methods determined to best reach the most residents.The notice will provide details regarding the location, duration,and construction methods that will be used within the vicinity of the affected property or facility. An early coordination meeting will be held with Lake Oswego Fire and Police Departments to develop a strategy to ensure that emergency response times are not negatively affected by construction activities and traffic control plans.Additional coordination meetings will be held on an as-needed basis with other agencies that may be affected by the pipeline and WR2 projects. 5.8 Tree Protection Plan An arborist report assessing the condition and vulnerability of trees along the pipeline route and required tree protection is provided in Section 5 of this land use application.Tree protection measures indicated in the arborist report will be incorporated into the contract documents to ensure that tree protection measures are installed prior to trench excavation or work within the vicinity of trees.The construction management team will have a certified arborist available to observe,manage tree care,and direct the contractor on tree protection measures during construction to ensure that there are no unanticipated impacts to trees along the alignment and staging areas as a result of the project. Clii.ake Oswego •Tigard Brown AND Water Partnership 9 Caldwell sliwnv,4G{d•eoiirEc1. .9<enier.��+rxt. 439 Lake Oswego Waluga Reservoir and Pipeline Submittal Section 09A Land Use Application Construction Management Plan 6. Conclusion This document identifies the construction impacts and mitigation for the FWP and WR2 projects within Waluga Park and the Waluga Reservoir Property.The Partnership recognizes that construction-related impacts are a concern for both the City and the neighborhood and is dedicated to the provisions identified herein and elsewhere in the application.The Partnership is looking forward to working with the nearby residents throughout the construction process to ensure a safe construction work area and to minimize construction impacts to the public. Lake Oswego •Tigard Brown...1 Water Partnership 1u Caldwell s! my !er•Nnnefru g contnivol'Uf5 440 � ' � EAT Office Fire Marshal's Office ., Memorandum Cl ..... P.O. Box 369 q ,AZ) Lake Oswego, OR 97034 • -- ESL 1910 _-- • 503 635-0275 - — - Zoutendijk@ci.oswego.or.us To: Jessica Numanoglu, Associate Planner From: Gert Zoutendijk, Deputy Fire Marshal Date: October 12, 2012 Subject: LU 12-0044, 4900 Carman Dr Plans Received Date: October 3, 2012 ACCESS Access at 20' paved and the 20' wide turn-around is adequate for emergency vehicles. WATER FLOW FOR FIRE PROTECTION Hydrant location and water flow are not applicable for this structure, EXHIBIT F-13 LU 12-0044 441 442 MEMORANDUM • �� � FIRE DEPARTMENT V 0 °REGON TO: Members of the Lake Oswego DRC FROM: Phil Sample, Fire Marshal SUBJECT: Access to WR2 DATE: May 22, 2013 Lake Oswego DRC, I have reviewed the preliminary development plans for the Lake Oswego/Tigard Water Partnerships plans for WR2. I was specifically asked to provide comment on the proposed 17% access road grade. As this grade closely matches the current grade of the existing access road to WRI, I do not feel that the proposed roadway would impede our ability to respond to a fire/life safety event at the reservoir as long as the applicant improves the roadway surface and width as shown in the application. The fire depatuilent would view emergency access differently if this project was a residential property,using wood frame construction and a place where people live and sleep.. In those cases with a slope over 10%we would require residential fire sprinklers as a life safety measure. Fire sprinklers would add no safety benefit to this project. EXHIBIT F-14 LU 12-0044 503.675.3984 380 A Avenue PO BOX 369 Lake Oswego, OR 9; - - 443 444 ;A:.. Lake Oswego Tigard .� Water Partnership sharing water,connecting communities Waluga/Lake Forest NA Required Land Use Meeting Outline Thursday,June 7, 2012 7:00 to 8:30 p.m. West End Building Attendance Total signed in attendance was 19. Jeff Selby,Dave Prock,Eric Day,Sean Goris,Brad Moore,Ben Johnson and Vaughn Brown werepresent from the project team. Meeting Summary Jeff Selby called the meeting to order and described the primary meeting purpose as providing an opportunity for public input on the reservoir and associated pipeline conditional use and design review application. He emphasized that the team was interested in hearing ideas on ways to improve the application. He introduced the project team noting that Vaughn Brown would serve as the meeting facilitator and turned the meeting over to him. Vaughn described the meeting procedures and explained that public testimony can be either oral or written. Written testimony forms were available but were not required to be used. Written testimony can be submitted in any format but must be submitted tonight.-Oral testimony will be managed to ensure everyone a chance to speak by holding each person's comments to 3 minutes. Testimony submitted in either form is equally influential. Vaughn then opened the project overview segment of the meeting.Dave Prock described the overall LO-Tigard Partnership Project eri-iphasizing the role of the reservoir and associated pipeline within the project. Brad Moore (project manager for the pipeline) showed a map of the 1200 foot alignment of 24-inch pipe to be installed using the conventional open trench method.He said that the alignment was determined after intensive surveying and was able to avoid taking any significant trees in Waluga Park. He also pointed out that the Waluga Park parking lot will be restored to a better condition than present and that bicycle and pedestrian access,through the park is expected to continue through construction. However,further discussions with Lake Oswego Parks Department and the pipeline contractor may result in some park closures for public and contractor safety.He was not sure if motor vehicle access to the parking lot would be able to be maintained.Total pipeline construction time is 5 months from approximately November 2013 to February 2014. Sean Goris (project manager for reservoir design) walked the group through the site design for new Waluga reservoir.The reservoir is contained within the set-backs on existing City owned property. • • EXHIBIT F-15 LU 12-0044 ,�'� Q 445 The tank will have approximately 40 foot sidewalls with a domed roof that will reach neatly 50 feet at its highest point, He showed a map of the limits of disturbed area.He also pointed out the water detention facilities being built on the site. In response to a question,Sean said that the water outflow will be to the existing tank. The entire construction zone will be fenced for security and safety. Workers will park off-site and be bused in. No jake brakes are allowed and the contractor will be encouraged to follow diesel idling best management practices.There will be some large equipment used and rock excavation required. It is likely that the rock can be ripped using excavators,but some blasting may be required. Ripping rock creates considerable noise for a long period while blasting has the potential to create shorter term noise by reducing the excavation effort.Work hours are from lam dpm on weekdays,Sam- 6pm on Saturdays with no work allowed on Sunday without approval of the City Manager. Construction is scheduled for July 2014—July 2015. Sean noted that access for the reservoir construction will be from Carman Drive with a left-in/right-out traffic pattern.The existing access road will be improved to serve construction vehicles and equipment.It will also have improved gating.All reservoir construction staging and storage will,be on-site, He explained that access for some of the pipeline work will occur through the neighborhood on to Parkhill. Ben Johnson (lead landscape architect) showed the site tree removal limits. He said that the construction footprint has been minimized and that the team worked to preserve perimeter trees all around the site. He noted that the site is covered with invasive species—much of which will be • removed and replaced with native shrub understory.There will be 2 acres of restoration within the construction zone and another acre of mostly understory improvement outside the zone.All of this will help to hide the facility. Ben showed viewpoint diagrams that demonstrated that very little of the reservoir would be observable from Parkhill Street and that small portion will be obscured by trees.The facility is not observable from Manchester Drive since the domed top falls below the sightline over neighboring homes: Ben added that the pipeline route had been altered to preserve the Oak and Evergreen trees at the end of Parkhill. Stormwater plants for habitat will be planted in fenced water detention areas. Vaughn provided an overview of the more than year long process of meeting with neighborhood residents to discuss Good Neighbor Plan (GNP) commitments for design,construction and ongoing operations and maintenance of the reservoir and associated pipeline.Five meetings have been held with a final draft accepted at the May 23,2012 meeting. Copies of the draft were made available to attendees. He explained that the group had identified a number of issues such as appearance and visibility of the tank,safety,and construction impacts. Specific promised actions aimed at addressing neighbor concerns about reservoir site and pipeline design,construction,and O&M are detailed in the GNP.Vaughn noted that the GNP is already influencing design as the 2 446 previous presentations had demonstrated.The GNP will be an attachment to the land use application and will be required to be complied with by designers and contractors. In response to a question,Vaughn acknowledged that some of the attendees at this meeting had not been participating in GNP development even though they had been invited and that the document will be held open for further consideration as those neighbors become more familiar with project plans and information. Vaughn then opened the meeting up for public comment. Oral testimony is summarized below. Emma Lee Weibel—Ms. Weibel started by saying that 3 minutes was not enough time for her to share all her concerns. She went on to say that no one believes that Lake Oswego needs the water supply project.It is only a plan to sell water to Tigard with no benefit to Lake Oswego. She owns the property on the west side of the City site.Her property has been in the family for generations and she has no intention of selling but indicated that her neighbor was selling because of the project. She is upset about the 30 foot setback along her property line and sensitive lands identified along the other side. Lou Franz—Mr.Franz has been a Blackhawk neighbor for 8 years. He wants more details on the height,setback and other design elements.He got a letter with a map included recently after 3 years of project planning. He felt that tonight's information was good but that the Waluga project was a steam-roller process and that the City did not care about neighbors'input. Torn Hauck--Mr. Hauck said the information about the project has been weak.He has been a resident for 10 years.The project negatively impacts the neighborhood with noise.He is unconvinced the project is necessary for Lake Oswego. He sees negative effects to property values, danger to children,and has seismic concerns. He wants the project moved to another location. Xin Yang—Mr.Yang is providing both written and oral testimony.He said the City doesn't care about property values, He noted that the Mayor should know land use law. Mr.Yang presented a petition signed by 23 neighbors. He said he has many questions such as: • Is the project needed? o Does Lake Oswego need a partnership with Tigard? a Have alternate sites been adequately studied? He wants the facility moved to another site and feels it is only being built so that the 10`h Street facility can be de-commissioned. Michael Surrell— Mr. Surrell is a Heritage Hills neighbor who is most concerned about safety and construction standards.He has asked about who is responsible for damages if the reservoir fails but has seen nothing put in writing. He would like something put in the mail to him on this topic. 3 447 Gerald Mack—Mr. Mock has been on Parkhill for 44 years.He believes the new reservoir is for water for Tigard and that the tank should he built in Tigard.He said that just after he moved in the existing tank failed—a strap broke and the tank was out of commission for 6 months.He described the Cascade subduclion zone in this area and said that a major earthquake would cause widespread damage including damaging the reservoir. • • John VanLeeuwen—Mr.VanLeeuwen has lived in the neighborhood for 15 years and his property abuts the Weibel property.He said that he agrees with the issues brought up by others such as noise, traffic and if the project is needed.He does not want to have to hear construction noise for the next 3 years while his children complete their high school education. He feels most upset about the impacts to the Weibel property and that the project is being unfair to the Weibels. Following the oral testimony,Vaughn summarized the upcoming land use schedule. The application will be submitted in late summer,probably September.The Development Review Commission will i set the hearing date which is expected to be November or December. The same notification procedures as were used for tonight's meeting will be used for the hearing, In response to a question,Vaughn said that the City Council would only consider the land use application if the Development Review Commission decision was appealed. Vaughn adjourned the meeting and suggested that the reservoir viewpoint slides be placed on the screen for participants to have a closer look. Attachment: Copies of submitted written testimony. • • 448 From: Homeowners in the Waluga Area To: Lake Oswego City Development Review Committee, and Lake Oswego Tigard Water Partnership Date: June 1,2012 Opposition To The Water Reservoir Construction In the Waluga Area We,homeowners in the WaInge area,oppose the construction of a second water reservoir (Reservoir)proposed by the Lake Oswego Tigard Water Partnership(Partnership), The Reservoir, if built as currently designed,will be fifty feet high and very close to our homes in the area, Many of the tallest trees will be cut and gone, greatly reducing screening of the reservoir. As a result,our property values will be significantly affected. This is especially true in today's real estate market in which potential buyers will not only be able to see the huge Reservoir from our neighborhood(confirmed from our recent site visit)but can also easily recognize it through satellite views on popular websites such as www.zillow.com and maps.google.com. The Partnership alleged there is a need for expanding and upgrading water facilities. However, the Partnership did not adequately take into account the depreciation of our property values. If the Reservoir is built according to the plan by the Partnership,our constitutional rights will be violated under the Fifth Amendment(Amendment V)to the US Constitution which declares: "... nor shall private property be taken for public use,without just compensation." The Partnership also alleged that Lake Oswego(City)purchased the lot where the reservoir is to be built in 1995 and thus has the right to build any utility structures on it. However,our neighborhood had been developed well before the purchase date:in the Blackhawk neighborhood, ten houses were built and sold in 1990 and additional four were built and sold in 1992;in the Parkhill neighborhood,seven houses were built in either 1961 or I962,one was built Page 1of6 449 in 1989, and four were built in the late I 990s. Accordingly,the property rights for the majority of the homeowners were established before the City's purchase. Moreover,the current zoning code(R-7.5)limits the height to under thirty-five feet. The code is designed, at least in part,to protect the neighborhood's property values and the environment. Replacing tall trees with a 50-foot-high with a 125-foot-in-diameter concrete monster will definitely have a significant impact on our property values and the environment. Ih addition,we do not think that the plan proposed by the Partnership adequately addresses our concerns of natural disasters,especially earthquakes. The possibility of a major earthquake in the region is significantly high. According to a story in Oregonian, "Many seismologists believe the Pacific Northwest is overdue for another mega-quake. Yet in cities like Seattle,Vancouver and Portland, Ore.,hardly any building is designed to withstand such a huge jolt,... According to the Pacific Northwest Seismic Network,subduction'zones produce the largest earthquakes which can exceed magnitude 9.0." Considering the risks, it's not wise to build a second big water reservoir in the same neighborhood. Furthermore,there are some questions about the Partnership and about the process of choosing the Waluga area as the reservoir site from various options. The following are just a few examples: 1) According to a focus group report posted on the Partnership's website,"Lake Oswego and Tigard participants were generally satisfied with their cities' drinking water. They rated their drinking water highly on taste,cleanliness, and dependability." No evidence of complaints about the shortage of water felt by Lake Oswego residents cited by the Partnership has been disclosed. 2) We do not think the Partnership's selection of the Waluga area over the 10m Street is fair based on at least the following: a) According to the"Waluga Reservoir Questions"posted on the Partnership's website, "The existing 10th Street reservoir is just over 72 feet tall." This reservoir was built in 1925. Based on the height and the year built,expansion on this site should have less impact on environment and property values. However,the city chooses to decommission the existing reservoir and build a second one in the Waluga area. Page 2 of 6 450 II ii b) Mayor Jack Hoffman happens to live on the 9'h street,not too far away from the existing reservoir. He did not reuse himself during the decision process. Instead,he seemed to rush the whole process—even before the thorough analysis of the site was made,the City accepted about$1 M from Tigard to share the cost of purchasing the lot in the Waluga area which was purchased in 1995; the Mayor became a member of the Oversight Committee for the Partnership last year by removing Couneilor Mary Olson who has been an advocate for the environment and the Lake Oswego residents. It is true homeowners in the Blackhawk neighborhood did not participate in the first four meetings organized by the Partnership. The Partnership's previous notices, however, were not sufficiently clear and were thus inadequate. Many if not all of the Blackhawk homeowners did not know the exact location and the size of the Reservoir until a revised notice was sent out in the week of May 21,2012. Shortly after the Blackhawk homeowners became aware of the impact of the proposed Reservoir,Dawning Liu and Xin Yang(both homeowners of the Blackhawk neighborhood)attended the meeting of May 23,2012 and voiced some concerns. It is also true the Partnership has addressed some concerns raised by some homeowners who have attended meetings over the past two years(Parkhill Street and Heritage Hills). These homeowners might plan to accept the plan reluctantly if minor changes were made. However, their decision was made after these homeowners had been convinced by either the Partnership or some of the city councilors that they had no choice but to accept the construction of the Reservoir.They were not aware of their legal rights such as the constitutional rights referenced above or did not believe the City would acknowledge these rights. Based on at least the above reasons(we reserve our rights to raise more issues pursuant to relevant state and local laws/codes),we request that the Partnership reconsider the plan and other options and that the Development Review Committee not approve the Partnership's application. Sincerely, Name Signature( R Address Age J Jen POLue), _ inciincht5iek roliz .0, c-OcAs- �a,n.tbv Fo o it Ilk' a ' 15525 il9atitesier ve, kei o 1 0.` Page3of6 451 ``..}} 01 44,04 ?Act, t0 q74 MA& l)Mh. ac rJe� L J- � f - j r r3 X(I `1AN6r 4'.&K Co 2-1 wt f nt pierce , L ) 9 0. Cbe-Rale{ ettAl"IG,z 30-v {>( )5)1 4-60- t]E e Pt L 0 •'O3 S 6t.,. \.,J (k\k 504 ��&�.� �6yd 1) L o f i' 6thviAl r zoo rL. L u r ) )efi tm-uee /5671( // il(LI/c - -376)} Dy' ,(c, _ I W.�6 ,i) 1/t rc k". \-"'fl /J'5 ///),WeicI ,s7 X l 7G'.7'b `- ( i' -l5-i' ' /l<<(is 5-ek �� -J 775 /S6ci /ghoi dey a OR Qyitz,0 y rlfP i c)V2 /2Y 6-11e.S7er t703S^ FaVr 1,1.710b4 � -( P/ A 7G? r a frn 1161 ()-161k 5-005 ffccrqoa z ote w5. Scr '7 �_ ✓' - . p t Dz ?.?zPir 1 Gam, / 7 / � if2 Page 4 of 6 452 cf:-.' ' C--;) _.- ‘).-N L. V ( ir-_ ".'YY.(S - /...`_e.-::.i)-:/ r"/./ / C7 to•.J / '-) i-.. /' i if/ / _._- I . 7--:45- ,A4g....6.,_ 6 _.___J,-,-..7--;----,,..,,_ _-,. .----,',AN,52 Pakkive,g .0 Z.-i-, .---1-Atv, 4b - _.,1„.. - Aiuti \klairQr 6,4 „4„ 4#433 'Pew ktult . -. /(QA/e5 4(.6 /.‹ ,,,______ ,,,:_ ze..=--Z, ii 92 Li Stj AVelt.'4 1 k-4.- St• Az) c,-7 03.s- , G r'te o N-13(¢ SO gait , 'St L,d, F 4 ?S / Q LC ' k'N '191( S w e a 51-, F-0-6/70 5 v‘4.,/Qvnc U4 A404 gti, ,..4l 3- . L I"o35 Rfl, ') „1- (\— ----- rk i Ruz-Re M. 2Ec.t4 , SVIL ArA.4l It i.O , ,7-76 z3 '— r - pro' lb 1 4"` 72 I . Ja 1, net (..Akt. S .• , lir,,,,i .. il-- . 403 Pode-kiffs . i_ 0 . 777s- ...„._... ... . 6,eclE,,ysi:-.-/200.)(:..,„ 2,---------5 c 1°5 5 2- .A re it;X: // W95. . . .9,p,D s _(--- Selz. 4e4,,ei/? - - 47-- ?:f.:S- A/ kW el: a.. 0 SO 03--- . 1-Z, eV/45 ./) /3 Ta /1.1 64, /-0 9 7o 5 --4, Page 5 of 6 453 a ' • Page 6 of 6 454 tLake Oswego • Tigard Water Partnership _ shoringwater connectingcommunities Waluga/Lake Forest Neighborhood Associations Required Land Use Meeting June 7, 2012 West End Building(WEB) 4101 Kruse Way 7:OD 8:30 pm Written Testimony Form* Name(required for the record): .ji,.j1A fA ( � record): - el Pia c.� L .0.4.0e-- �� Address(required for the cdb5 � � Phone, email(not required for the record): es 011. Qf 6-/A) ita 60 vorAA' 4-- (-er&I-a 1-)(1)vi .f0( A-kis rex ( f \o a k/ tir-c , alff eP-s1-)/(-3 p Poro II ^ 1 ` 17) MRAICII rrlit ° 5 Val ff(A(1, * Provided for your convenience only. Written testimony does not have to be submitted on this form but must be submitted at tonight's meeting. Please use as many sheets as you need to fully convey your input. Front and back use is fine.A stapler is provided. 4551 456 nj Lake Oswego • Tigard Water Partnership shoring water•connecting communities Waiuga/Lake Forest Neighborhood Associations Required Land Use Meeting June 7,2012 West End Building(WEB)--4101Kruse Way 7:00—8:30 pm Written Testimony Form* Name(required for the record): X x i\I YA1'1&r Address(required for the record): 5-0 2.6 tic-Art-tvyd z Le.( 0.0") OR 99L3S Phone,email (not required for,the record): * Provided for your convenience only. Written testimony does not have to be submitted on this form but must be submitted at tonight's meeting. Please use as many sheets as you need to fully convey your input. Front and back use is fine.A stapler is provided. 457 • 1)Depreciation of our home values should be considered as a True cost of the whole water project. The reasons have been discussed in our opposition letter. 2) Even though some water facilities may need to be repaired, the expansion is not needed for Lake Oswego, a)The population remained almost the same for the past ten years(according to Tom's research); b)The focus group study and the survey did not support it; c)The water consumption has decreased recently after the rate hikes; d)The expansion has a negative impact on the environment; f)The expansion has a negative Impact on the residents(noises, traffic, home values). 3) Even if some expansion is needed, the water partnership with Tigard is not necessary. The partnership is formed to save costs and,to generate Future revenue. However, due to the partnership, the water treatment plant has to be doubled and a 2nd water reservoir must be big. This increases the costs (not only the pure construction but also compensation to nearby neighbors). The Impact on our environment also Increases significantly. 4)Alternative sites for a second reservoir should be considered without bias. a)Some reasons are discussed in our opposition letter; b)Similar to the 10th street, the Waluga site also has a height limit due to the zoning code; ."\ n o,,,.i,,dpmforir racan,rslr may he built next to the West End Building without many negative effects. 3mail-Lssues maybe raised during tomorrow's meeting Imps://meal,}boogie.cornimaii/u/0/7ui &iic--91dc0G2c55&view=pt&s,,, 5) Residents in West Linn near the water treatment plant may get better deals. 6)The plan should be reconsidered and the submission to the development review committee should be delayed until all the issues and costs (water treatment plant and reservoir)are adequately considered. See you tomorrow at the meetings Xin �`(Nln, d 458 tLake Oswego •Tigard • `�!., Water Partnership shoring water•connecting communities Waiugaf Lake Forest Neighborhood Associations Required Land Use Meeting June 7, 2012 West End Building(WEB)—4101 (Cruse Way 7:00—8:30 pm Written Testimony Form Name(required for the record): ) a R j�j/4 / iI Address(required for the record): 5 O I/!4 '• 1Feff P PL. �,, r(, Phone,email (not required for the record): [ - I " -"r . c; )1,0 i -6( ,,, 'G'�' e ,Lth,,, of � V d/UC � C �� . 1V4Pie Idide a' v et mAkr--�.r t�Lo 94' Q; O,,,, , , ' Uv r t Lc n1.C4 G �`VuL'{. ,. � 4.1y. --s--_--[ Kkipv(e-- -1 vat iq • � L , L , 15 eet I j . '' ft- �Ka J 4- ' / Ot t c i 0 /--iPr 1, qe v•Ir 01 \ , _ tr &ike( , . .e,i7t, 4c, vw 1,1) 401 I.tAi\ ii,v+A S h/t,(C(U 6(9 (,_) vt,o.l. i ti (s e.x' )4(/// ikui,,) v 6-a S•tYud-cie . 1 e,c)ro (),0111 I)74llriVur i\A Gi SfvII((.ILtL? i124 K k rtr� i'f�v on��x�•rY1��bu .(tile: t,{,��C;�C� l� i�� � 0 * Provi d or our"iaVven el e nl . r1 k1 e es`t7mo�L goes nCri"a4veToY be submits Y v this form but must be submitted at tonight's meeting. Please use as many sheets as you need to fully convey your input. Front and back use is fine.A stapler is provided. -- 459 --Uko \i6 01-41A idg1,25611(kood.47- Au: (A, aturl gjfIni(0,11.41,04) 413(our f Auk 46-‘ vrAf/044--a4,0- 4tjuL p.LtiALA 4r-c;21- Atul,firsA. A/Lk-6m -1).Lou,t0( - twirdia .411,u-86 ii4tq-wai 66. 0'6 (VLuiep6Q1 L, Un9-tia__d 0-61, +2) I/14r';N.M. -Oa b. 10111- tki(Ovt -17E1 L 0 peAtt6 460 ` ) Lake 'Oswego . Tigard ,,) Water [Partnership ,haring water•Connecting communities WaiugaiLaice N:rest Neighbovhood Associations . Requ red Land Use Meenrig lune 7, Z012 West End Ouliciing MEW)a 4W Kruse Way 7:00 e 8:30 prmi Mitten ten Testimony Form* Name(required for the record): --: ._ad) 5 • Address(required for the record): 494 S f fIG G Phone, email (not required for the record): jt &-r, . e Cay+',,,,54 . a-e-Q- `-6e-- ,5 : tA_a__ p_;Q? / -4-) L CL h � 1 f�r1o1 "ma y--p C-141 le ct.,y-t5 • k._.— c: .0( .51.5 -A.zyc„, o_zvvv.5A-eZO'''vt---' ppe,_,,,,,,z/ 4 -Id ---a,5 4:Z , w-� tuft "`_- a S 5 :?-f Q �a / d-A- _, A.,4_,...0-9.___ ke..0--Ad 25 --71c7 (----'1L-Q— 46;LIPT-2-3"`-) '''`-) ---h--jf-A-e-cc -LA-Q-- � �- s ,P 9„,„_e__ __...„.„57L /7\--- (6.,_.,2, p ,.XtL� �05 c -� cr✓ f► _ Provided for yo r convenience only, Written testimony does not have to be submitted on this form but must be submitted at tonight's meeting. Pease use as many sheets as you need to fully convey your input. Front and back use is fine.A stapler is provided, 461 ?-17/- ca'Y'd V-6Lt 011- 6„,7-t, s-k)04" 0-- e.; Xo/A---) ,RA-,9;c-ej.5 coe-64, 5 I A cL,11 oc doi --74; 562,o-e- • 462 tLake Oswego + Tigard Water Partnership $!haring water•corinecringCommtmiries Waluga/Lake Forest Neighborhood Associations Required Land Use Meeting June 7, 2012 West End i uiiding.(WEB)-4101 Kruse Way 7:00-8:30 pm Written Testimony Form* Name(required for the record): e'riL Address(required for the record): 15 l TD 6tuArrli RA, ECG 9'7,0„3 Phone,email (not required for the record): ::, .,3 s....,t11.3 i to LI rz,N2cyIt6aq t tc r/-6 r4m T7744 corn Pe ou t . Qa A.0 ao scr.e d 8 �G a-z----ool red Me..rd'LbDrinzrodQ, tt}sA.:4ct oR f,16 1 cd ,C10,c,traj k5T an, t^_.H k .mil t Ll� i.Vp(t i-( ApprOun.( { c � �y ()hum(4c kr2c tvnnE � �vl�'nrs,r�;�r ��9c o-cln �U f t- UNe: i ''1� � 1t y"cctet `t1 '4Th f cc n)I'it 1 MIL Q94 1214kc 4 C- V&3 r CJPsi Z�t (� c�u �,L • Pr4 . cru `` ro to rut-L5 ReeT1 loor,'Iglzs Tit i" e Pr (V 17-0(/020-V 46 6gd;44 ail Nis { 0 C Le 2.) Ra_cle_tue. ( €c' 62620V,61 Try Z-/t./LJak . .c lTe, *Provided for your convenience only. Written tten testimony does not have to be submitted on this form but must be submitted at tonight's meeting. Please use as many sheets as you need to fully convey your input. Front and back use Is fine.A stapler is provided. 463 ~-- ..P e.A,P - e- ai.- Tu rem ( a6 G� ic.,c ceC otck i c ea z L U e h.c c14 'J L( lot Pe e, 5re pr® - . (Qa Zitk Cori UDao ,Seko U l -cr L .L�1t U �,c�6,-c/ Alre A• -11/u- e r� I c v Qoe(opoikaAJ-pry ed&`thm7- /l Gg Oa/ -4d 0/4tte_ atu.ek Q.)/ A NI !\/cj ,he-p4L. (3-u_ 61uiA)6, 0414 bis tea. eypo ;n.4,rt.� Neea- r � fottle j i dl5 UP.zi, G-a.iza , etc rre nRi-t d A � I 464 k Lake Oswego 'Tigard ,'"rj Water Partnership shoring Water.Connecting communities Waluga/Lake Forest Neighborhood Associations Required Land Use Meeting • ,o June 7, 2012 West End Building(WEB)—4101 Kruse Way 7:00—8:30 pm Written Testimony Form* i Name(required for the record): •'rk,) iNer-V -bt-Li` i Address(required for the record): Lc ci 3 3 Gt k- 1 - . Phone,email(not required for the record): r 1116SC (5L (4, 0.4-___-6(4,i, iit_afe,-1-0/1-is c i: /- -1-6—t- 'To-4 6.e..4.10.#.LA.+2. th-t LA,`e,c`t- k .4 • U --i-e a--- '_ V1� 2 t,L i�S 0- in..P-- S?CLd -P:V.-tt .r t' i L. .� 1,v1; o w- Gyi-flni s , vU - vt i--t- ivt- `�1--e6 E et c f V.2.2 SA- f O 4 •.k' .. VIP i _tie (•- i S ei.S c_�J;%re:( (.. tA,4 j ` ] U'•- -I a�-�c �- (-�.�4 YkQ 12Cr4C . u"4-ttlivar-:€AA311r. -1 i,-1Z 6(61: 4171zkiiA..- �- "-e . . s 1 c . - F-G' all i � Gfrkaiv, i 7 t . A q +�11� �' it -C. ,(61 bi ..e,a47:41/414- — ,Uv ^ 1c„ ; r4,ui F'yv+24'% � C_,E itu Au So. f,4 c'4n. d- 1J( 4° . 7.[,,y , * Provided for your convenience only. Written testimony does not have to be submitted on this form but must be submitted at tonight's meeting. Please use as many sheets as you need to fully convey your input. Front and back use is fine.A stapler is provided. 465 C.! kka ..(c-1-bvv; 1-,AAJ h- N amp ”e/rutg2j mitS(/‘106 f- C upd k, pea..,Li-2_ yL d ', .v ikaaj . - . ' 4..(,„_ .� �`5s �� G I � � � ,. :, mai 4 Nik 1 , 1 �S1fh9 ' .-rt An 4 'ori. 4A,Jr inx-Q_ -k -re---Z, i` cl\n/Let,r4a/d4 iv.j-q.?..04 & vki orc ruzAre-f eJLestducc.:4__Sli , --1)(---A-- N252-j . 'tc ..46-:{". (-40-CA.q"\ et, eYput?,0-04 ko IA1 . 1).W.C.3"), \J\ 642,4- tAi.'.\1 a(1 .____t -1-i-lyi_crAr ) vv\&,/ .+/As_ , 0 __, 1 , L3 —r- . i .9v.i..(L-1- 1.€4.4 'rz• -?0-4 4A- .-6S r \A)in i (\)-4/" Aire. 40.-ii‘ 1 1 s c.,,j,,A .1L,r ke 62,x.(24,111c i.eiA, * -.A.-.1„,LciA y;:-Ig. I a ,f V\--4.LYPC k 00 A "cali .--C-bc c_Q__cl WAIro 62-a-ei).". . +1,.._,.... --or-cL2,-/N, ' A --:\-L.. .e_c.t.,(--,/0- 3 CP..&f) il-k- 6L m—r , ,,—,,.:2,,.; , .{..,. ,,,,, AL,c-t,,„4 ,' yui.‘-- 2(.4.--,-.))(L-\ , c, 'CP-Ary —.\-6-9-, CiA--t i()%t, f\k-t,T--- 1,N\NA-\--;\re_ •i (,.,4 ),A•N‘. 6_,./.\ ,r ) '4( V. ._,:, ,,--1-)fut,,,T, ai ', s. kt-ir-1-1 , 12 ,6.-A)--- .V-t- .-\-rr' ' .--\"L' ' a c c.evw-uko.--1,4,), .0 comp yi,_ ,.,,241 . i\-QA /(, \I-- ) .4_c[1143re , , -, . 6,464 --\,-L . &e-- IA-0A-asti, (1.1.- 6J , " (V) , 466 i 1 1,,-,-;_-i, Lake Oswego .Tigard Water Partnership `--------" sharing water•connecting communities Walugailalte Fores : HeIghborhood Assoclations RequIred Land Use Wieetinz 1 June 7, 2012 West End Btfildkag(WEB)—4101 Kruse Way 7:00—8:30 Lo m I := VI/Atte-6 Testimony Form* 1 Name(required for the record):-- pi , V f.,.) ; 1 ,2 .e -.7...I Address(required for the record):2.10 ;--;; , i.,/a. ',.:,-_. /1 t-A,,• V ...../, Phone,email(not required for the record): . . . I tui':`)!IC 11K.t .15 0010A-1-)15 1.,::.:i 11,)?, ;1-it---• ' , r, . . , ,-- " , i 1- C I. ile p yup,k_i, „If q/c/Adt.;p7/.? 4-iut yvottcr6t: i'usie/f v a• , - (().)(,-,Iyorl/ .,...)P i. ////). c Lod' te/' )c) 4,6' ' n'myve..( bi.._t,ro ,, i.pe-if. .I.., 6114,,,A.ii;) 10.P '1/14/0.tta44:1_4( ti kla):: ,i.r,,-,i , '1-1,1, shedsti ( dam atilia/10,p) t---?A.o._ )'t,f2,ec,/ f (i .1 e:.1 /1",....1 . ) P471( otO k 0.1 - .$e/cf-Y)6''e) '1.[1.../, Vlio-A--1)-rf 6A ' ' ' IA i . 6 i •,, aft 1) 19(211d yl.. has tc- .S.1 ask A. u() AAA ,.\0 c,.,_..ii 1::-.,,-,-... :i L _. -. ty,,,.- up at) /,.....C. ( eryi5)6UAL,P) to , +IA) .fri 1/4\-Uta.4.. ciAtx .f. v - . , . 1) LA tit) r 0.//V.i41.. n/V et.„5,1..i.Aele ci--k6A) LA-A-(7-tv. . - 1' "` 1 i 1 • (1/14.1A.,,.+- coui i 6 0 -,A ivrs ve-t. , ,. (.) II 'Out .',' 10)1OC-. CI.- ,i () (9YNIP.47/:-(f., Jjael-5 '' ttInc.1. 1)<:::, tif_,-V-\,. 4-1/0.)( a t..0./ 1)001,_..0 ci..7tt,e't, I , N ( InevA kIlliu OA C imet,P1A1 d 1".{/t C/11 C.? •:-, ?--/(1'(' ‘-5 -11-(I a// - .1- .-6 j q'frill-C,P 6 0 0 04C,Idifria-( At((-9 tO1 iv ('1 P (-4.)('-(.-0- -' , * Provided for your convenience only. Written testimony does not have to be submitted on this form but must be submitted at tonight's meeting, Please use as many sheets as you need to fully convey your input. Front and back use is fine,A stapler is provided. . 467 1 5itut/id f aL 00 c /" ffi,•t.,}} c ei.-,ru w(lift . ..&.0 ) A071(2 �,, , ,. f�.t t(7 /V71.-1 Ah L P/ A/ it-)1 t bli 141-D, VIvq_ctly\.c..•s C-,MtrO t).,-,) I ( e-P • --. 1 .?_ , 1 i' f N. / , .( ,._-, . 4 li/vt4 r,..t ,:,1. ..-„ „. .. * I i 3 CaliArkt-PVi 06 nte.dt, 1.-P1,- . --)....,tvicott, :e) .//c,., v cto (.,z:))/1.v +I> (-12-cc'Avi Ci„.0 of 0 of ot.6. 0./ to I", iytt3i .• 6..t; &c A obi ({, s-i lk.o..A.f. s ,L:',.,c1,,,,ci 6,,,t1 ,/,,, t„,,,A.,_, (7, , 11/1/4-iii. CI aC4'l(?' ✓I.C.. /- 4r , . ,1 : f7i.r •,L ' ( ! `, '• . '- ' 1-4-0, mot'+ .•cj .1'. IP 4:t I. '', ... 1' ' ..-' A-- , 'l - 'l.(,�t: r ;.. 'a- L-t-,-te 011,,C.,.(.. j) 4i,.).0...1- :..,•,.. .i_ ._ ,...--, . i 10 1,64,..,„i i 4. ,,:r c / a • , 7 IU 4\\-- - 6 :', (1 1..` 1 �{/1�11/:) d&w ( \ r-4i� V •.C.� �� G 1 r VU Pr .l ram, ,I� � , r� �y f �..: r �L't I ` L 1 %t/ _ f C�� f/� t�L' �i � .a F .� ,,�� j �/ ,� .I '}..... �•1 IJ' C��/�!/l 7 t L yI• 1 0 r 11 .r I ) ... l-mil.�5. f r`"4 :A-.( k- ' 0 V j J+� f� Ft g I/7 r 1 V.a',.I i wv } ( ) fS°+ '�r t'` *--I:,...0 v`N. e 4:46-14)-e, (.)01 _).l --Q., r1., .� `> f'l �f1r C I 'I,' '' i.° ! ` ;:, ,t'.. ,. ''i l ` C i,.; 1. k`e.c lie r _.q� /1/1 - 1.c _.101sLf ,t1A it�- , �, i(..f.: •4 . ) 1. , i 1, q1� ) ) r 3 1�i1 }� j�r r ? 1. •My kocct.t.A. A q;62 --‹ ii4 1.Ate ' i ii'l 1-.(1 i'lt In"? "('''• ''''. (-)t-:-(- 14 ' - --/11,.,..-.1,•ov 1 r c3 a �'ti , ,.r_-,: .' VI 4 0 Ci 1 ,,, , 1 -I 0 / ,i,,no....e, )),) 5/ri 0.-1 ) 1 k \:(..»,0 , ,i.,:1: , ,,-.. .,..,-,.. ,., .. i,„.-./..,..., , , ...,, ,.3. ._ , ve,ty I lri F' ,. .,1,0.Itk ~r7!�_x,:.. SI--_ 1/1 L (let et--I `/ 1. I� •! P `cw6 Wait} , \ Y16e ( .CC:_ 1 , / -/ 468 NEIG 'C'ORHOOD COORDINATION DOCUMENTATION Introduction In developing plans for the new Waluga Reservoir(WR2),the Lake Oswego Tigard Water Partnership has placed a high priority on neighborhood coordination. Communication and outreach have far exceeded the requirements for compliance with Community Development Code 50.07.003.The proposed reservoir and associated pipeline are located within residential neighborhoods and must remain compatible with this setting. The Partnership has informed and involved the Waluga Neighborhood Association,Lake Forest Neighborhood Association and reservoir neighbors since July, 2010 and has pledged to continue this high level of communication throughout the construction period and ongoing operation of the new facility. This document describes the two-year neighborhood coordination process and summarizes the results including how the land use application incorporates neighborhood input. Required Neighborhood Land Use Meeting The meeting was held at Lake Oswego's West End Building on June 7,2012 from 7:00 to 8:30. A total of 19 neighbors signed in at the Required Neighborhood Land Use Meeting. Total attendance is estimated to be more than 25. Members of the Lake Oswego-Tigard project team were present to describe details and show displays of the site plan including the reservoir location, appearance(materials and colors), natural resources protection areas,arrangement of uses,access and commitments made in the Good Neighbor Plan. Documentation for the Required Neighborhood Land Use Meeting is included in Attachment A. Supplemental Neighbor Meetings Project Introduction and Scoping Meetings Over 25 neighbors attended the first meeting in July,2010 and discussions were held about visual impact, reservoir safety,and construction impacts on Parkhill Street.Another meeting occurred on September 8, 2010 on Parkhill Street. The Partnership team suspended helium-filled balloons to approximate the location and height of the proposed reservoir to help neighbors visualize the new facility. Feedback was mixed with concerns remaining about the visual impact of the facility, safety, construction disruption, and street safety. Nearby residents wrote a letter to the Lake Oswego City Council in October, 2010 requesting consideration of the neighbors' issues regarding proximity to their homes. In response,the Lake Oswego Tigard Water Partnership Oversight Committee and the Lake Oswego City Council reviewed options for WR2. Ultimately, City Council,in consultation with nearby neighbors, selected an option that was actually 10 feet taller than initially recommended with greater setbacks from the closest homes. The new reservoir is proposed to be 146 feet from the back property line of homes on Parkhill Street and 34 feet from the nearest residential property Iine on the west. EXHIBIT F-16 LU 12-0044 469 Good Neighbor Plan Meetings Recognizing that nearby neighbors and neighborhood associations have a significant interest in how the new reservoir and associated pipeline are constructed and operated,the City began working with interested community members to prepare a Goad Neighbor Plan(GNP). The GNP will guide facility/site design and construction of the new reservoir and pipeline. The plan reflects a good faith effort and commitment by both parties to ensure the structure will remain compatible with its surroundings. The GNP process began the initial meetings in July and September of 2010 (see above). Interested neighbors were asked to share their concerns, issues, and needs regarding the proposed new WR2. That input was carried over into the development of a GNP document that included five meetings with neighbors over an eight month period from September,2011 to May,2012.The process included one-on- one meetings during October 2011 with residents bordering Stone Avenue—the alignment for a new pipeline—and backyard visits to properties bordering the City's reservoir property. In addition, a pre- application meeting was held on July 14, 2011. Findings from these meetings were incorporated into the GNP.Attendees at the last GNP May 23,2012 reviewed the final draft GNP and indicated they were satisfied with the plan's contents. The Partnership is committed to keeping reservoir neighbors informed and involved throughout planning, design, and construction.The Good Neighbor Plan ensures neighbors' interests are considered throughout the life of the project and beyond. The GNP includes guidelines for every phase: facility design, construction operations, and ongoing communications with the neighbors. Documentation for the GNP coordination meetings is located in Attachment B.A copy of the GNP accompanies this application in Attachment C. Other Outreach In addition to the Good Neighbor Plan and Required Land Use Meetings described above the following supplemental outreach was conducted: • Presentations and discussion at Waluga and Lake Forest Neighborhood Association meetings - April 29, 2010 Lake Forest NA - July 29, 2010 Waluga NA - October 27, 2011 Lake Forest NA • One-on-one visits with neighbors near Stone Ave. (location of associated pipeline) - September 22-26, 2011 • Backyard visits with neighbors on Parkhill St.,Manchster Dr..,and Heritage Ln. - October 12-November 2, 2011 • Meeting with Ken Toops(neighbor on Carman Dr.) - May16, 2012 • Commissioner Tierney meeting(s)with Manchester neighbors - July 5, 2012 - August 2, 2012 • Door to Door on Parkhill,Manchester and Heritage,April 26(Summary at end of Attachment B) • Meeting on May 28,2013 to update neighbors, describe land use process and answer questions. (Summary at end of Attachment B) 470 Attachment A: Documentation of Neighborhood Contact Requirements (CDC 50.07.003) The Lake Oswego Tigard Water Partnership completed all neighborhood contact requirements as outlined in CDC 50.07.003. Actions to meet those requirements: Schedule Required Meeting • Sent meeting request on May 11,2012(email)to: o Mary Turnock,Lake Forest Neighborhood Association o Cheryl Uchida,Waluga Neighborhood Association • Email formally requested selection of a meeting date from the three options(June 7, 13 or 14) offered. • Worked with Association representatives to confirm meeting date of June 7,2012. Neighborhood Notification • Sent meeting notice on May 18,2012 to property owners within 300 feet. • Neighborhood Association Chairs were notified by telephone and email. Meeting Notice Content • Announced meeting date,time and location. • Briefly described the nature and location of the proposed development. • Invited the association and interested persons to the meeting to discuss the proposal in more detail. • The meeting was scheduled as a special association meeting. The proposed reservoir was the only topic at the meeting. Posted Notice • Posted notices at the site on May 18,2012. • Signs were posted at locations visible from the public right-of-way. • The signs were 11 inches by 17 inches on durable material and in clear, legible writing. • Notices announced that the site may be subject to a proposed development,name of the applicant,telephone number where the applicant can be reached. • Notices remained posted until the conclusion of the meeting. Required Meeting • Meeting was held June 7, 2012. • The meeting was held at the Lake Oswego West End Building from 7:00 pm to 8:30 pm. • Information conveying the appearance, site design,density,natural resource protection areas, arrangement of uses, access and other relevant visual information. 471 • Sent meeting summary and sign-in sheets to Jeff Novak(Waluga NA Chair),Mary Turnock (Lake Forest NA Chair), Cheryl Uchida(Waluga NA Secretary),and Amy Waterbury(Lake Forest Neighborhood Association Representative)on June 21,2012, within 14 days of meeting. Documents Demonstrating Compliance Copies of the required neighborhood contact materials: 1. Certified letter requesting meeting to the neighborhood association&return receipt 2. Email response from Neighborhood Association Presidents confirming meeting date 3. Certified meeting notification letter to the neighborhood associations&return receipts 4. Meeting notification letter to property owners within 300 feet 5. Affidavit of mailing 6. Mailing lists(names and addresses) 7. Posted meeting notice 8. Affidavit of posting 9. Map of posted notice locations 10. Meeting Agenda 11. Audiotape of the meeting 12. Copies of meeting materials 13. Written summary of the June 7, 2012 meeting 14. Written comments from property owners,residents,and neighborhood association members 15. Certified letter transmitting meeting notes to the neighborhood association chairs and USPS confirmation of delivery 472 °t�5 �,� C'°°� Neg A,�taGh�°°t 473 • • • • • • • • • 474 Lake Oswego • Tigard Water Partnership Waluga Reservoir Neighbors Meeting I Summary July 29, 2010 River West Church, 15751 Quarry Road 7:00 to 8:30 pm Introduction This is the first in a series of meetings aimed at information exchange,problem solving and drafting a Good Neighbor Plan concerning the design, construction and on-going operation of the new Waluga Reservoir. Neighbors were notified of the meeting by a flyer mailed to over 1700 addresses comprising the carrier routes surrounding the new facility. The meeting was also advertised on the project website. An email was sent to citizens who have signed up for project news via the website. While this is the start of the official neighbor input process, the project team has had previous opportunities to discuss this facility at a meeting of Parkhill neighbors on June 17 and at the Lake Oswego—Tigard Water Supply Partnership open house on June 24,2010. Attendance Twenty-five people provided their names on the sign-in-sheet. Total attendance is estimated at 30. The majority of attendees were from Parkhill Drive, two from the Carmen Drive area and three that live on Heritage Lane. Meeting Agenda and Synopsis Arrival and Informational boards were set up for participants to review and informally Information Gallery discuss for the first part of the meeting. Welcome and Jane Heisler asked participants to join the circle of chairs arranged to Introductions encourage conversation. She welcomed everyone and outlined the planned series of neighbor meetings relating to this facility. Neighbors and staff introduced themselves. Jane described the purpose and goals of this meeting: • Describe the LO-Tigard partnership • Demonstrate the role of the Waluga reservoir in the upgraded water supply system • Answer questions already posed by neighbors • Seek further input and neighbor concerns • Publicize and recruit participation in the Waluga neighbor input process Joel Komarek gave an overview of the water supply system, the Partnership;and described the need for,and role, of a new Waluga 475 reservoir. Presentation of A bValuga Reservoir Questions information sheet was handed out that Reservoir responded to questions asked during the earlier conversations with Information neighbors mentioned above. (answers to previously asked Matt Mating,who is leading reservoir tank design,reviewed some of the questions) key questions and presented information regarding the technical considerations relating to this facility at this site.Among the topics he covered were: • Storage capacity needed (3.5 million gallons to supplement the existing 4.0 million, 80% of that is to supply LO's future demand and 20%is to enable water delivery to Tigard,no water is stored for Tigard at Waluga) • Elevation and pressure requirements • Height and circumference relationship Matt also shared initial facility renderings simulating the visual impact of a 40 foot reservoir from the Parkhill Street perspective. Discussion and Vaughn Brown and Eryn Kehe helped facilitate and document the Questions questions and concerns expressed by neighbors. There were strong concerns expressed about reservoir tank height and location,safety—both from the perspective of possible tank failure and children/pedestrians during construction,aesthetics and neighborhood views, and property value impacts.The team listened to and recorded neighbors'input.Team members answered questions and responded to some of the concerns raised as they were able. Neighbors were reminded that this is the first of a series of meetings to understand and collaboratively problem-solve to make the best decisions possible regarding this facility.A Good Neighbor Plan will document those decisions,recognize neighbor's concerns and record mutual understandings relating to the design,construction and operation of the new Waluga reservoir. That input is summarized below. Responses are provided for the new questions not already covered by the previous handout. Questions will continue to be added to that document as the neighbor input process progresses. Future Meetings & Jane closed the meeting by thanking everyone for attending and asked for Good Neighbor Plan their continued participation in the upcoming planned meetings.Meeting was adjourned at 8:40. Meeting input Summary Input was recorded on flip charts during the question and discussion segment. Those items were categorized below. Responses to the new questions have been provided as follow-up. Suggestions lot Next Meeting • Idea to show possible heights —balloons and various heights 476 • Meet on site;mark site area to help visualize (mention of poison oak infestation limits this possibility) • Tell us the number of trees that must be removed • Show aerial view to show where existing trees will stay • Research about failures on west coast and what level earthquake led to the failure • Add tonight's questions to the Q&A. Please post online. • Mail next meeting notice to Parkhill,Heritage,Carmen&Blackhawk,Manchester and Royal Oaks • Schedule out the future meetings and provide dates.Last Thursday in August • Show what a shorter reservoir would look like • • Show us all area topography • Tell us the size of 10th Street reservoir(height and distance from homes) • Be careful walking in there...poison oak Concerns Expressed • Construction disruption to neighborhood. - Lots of children who play in the streets. - It is a quiet neighborhood. • Renderings are misleading. - Looks like the tank is shorter than it really would be. • Concern about a catastrophic rupture &danger to nearby homes and residents • Liability risk to owners is big concern. • Property owners should not be required to keep trees to buffer visual impact. • Concern that there is a lack of flexibility on 40ft height • The impact to this area is high. Concern that we don't benefit, New Questions to Update the Q&A - (September meeting Q&A contains the responses to these questions) • How does this impact the Lake Grove water district? • Why can the tank be 40 ft when homes must be built shorter? • What is cost difference between shorter/wider vs. taller/narrower? (add detail to existing question) • What is the plan for landscaping to buffer the view? • How much of zone is impacted by low pressure? • How tall does this need to be to address pressure issues? (add detail to existing question) • What scale of earthquake would it be built to withstand? • Do you have to declare this when you sell your home? • How would this impact insurance for nearby owners? • What category earthquake is the old reservoir built to?Is there a plan to upgrade it? • Where does the pipeline go from Carmen? How deep will it be?What side of Carmen will be used for the pipeline? • Will there be blasting to build footings for reservoir? • How long will construction take? • Can you tell us what the ribbons on trees mean? • What will the land use process for this be? • Size of 10th Street reservoir? (height and distance from homes) • How does this impact the Lake Grove water district? 477 • Why not in the quarry area of Waluga Park? • What happens in a catastrophic rupture? f f • 1 • 478 • fP)6\ Lake Oswego Tigard Water Partnership Waluga Reservoir Neighbors Open House (Meeting 2) Summary Park Hill Street dead-end September 8, 2010 6:45 to 8:00 pm Introduction Following on the request of participants at the first neighbors' meeting on July 29, the team held an on-site Open House. The purpose was to loft a series of balloons up to 40 feet around the visible perimeter of the site and visit with interested neighbors in view of the balloons. Neighbors immediately adjacent to the property were alerted that project staff would launch the balloons the day before the meeting. Some neighbors were able to view the balloons prior to the meeting. Staff visited the site several times prior to the Open House to refresh the balloons and attempt to maintain the 40 foot height despite strong winds and cold rain. Some of the balloons remained visible during the Open House.Participants were able to view the balloons from neighbors' backyards. Attendance Twenty-five people provided their names on the sign-in-sheet. Total attendance is estimated at 30. The majority of attendees were from Parkhill Drive, two from the Carmen Drive area and three that live on Heritage Lane. Meeting Synopsis Tents, tables and chairs were set up at the end of Park Hill near the existing reservoir. Display boards,maps and informational materials supplying answers to questions raised at the last meeting were available for participants to review and discuss with project staff. Participants arrived throughout the meeting,mingled with each other and project staff,viewed the balloons from the street and backyard perspectives,and discussed their impressions and concerns with staff A comment flip chart was available for participants to note their ideas and input. Meeting Input Summary Input was recorded on flip charts during the question and discussion segment. Responses to the new questions have been provided as follow-up. Concerns expressed generally mirrored those heard at the first neighbors'meeting regarding visual impact of the facility, safety,and construction disruption and street safety. 479 Lake Oswego • Tigard Water Partnership Waluga Good Neighbor Plan Meeting I Summary Lake Grove Elementary September 29, 201 I 7:00 to 8:30 pm Attendance Ten people signed in. Total attendance is estimated at 19. Pipeline and reservoir consultants also attended to hear neighbor issues, concerns and interests. The majority of attendees were from Parkhill Drive, Carman Drive and Heritage Lane. Meeting Synopsis Vaughn Brown called the meeting to order and asked participants to introduce themselves. He explained that the meeting was convened to kick off the Good Neighbor Plan (GNP) development process to guide design,construction,operations and maintenance of the new Waluga reservoir and pipeline through Waluga Park to the reservoir.A series of 3-5 meetings scheduled about every other month will be held to identify, define and agree on the content of the GNP. Vaughn provided a short review of the outreach to date. He noted that two meetings were held during the summer of 2010 focusing primarily on the new reservoir. Concerns raised at that time were related to visual, safety, construction, and pipeline impacts. The City's efforts to address citizen requests for further study of alternative reservoir sites and research regarding safety were highlighted. Jeff Selby then gave an overview of the purpose and City's commitment to the Waluga GNP. He handed out a sample GNP from the recent LOIS project. Dave Prock presented information about the LO-Tigard Partnership and described the overall project from the Clackamas River to Tigard. He then narrowed down to the known details of the pipeline through Waluga Park and the new reservoir. Q&A followed the presentations: • How much larger is the disturbed area than the footprint of the finished reservoir? There will be an approximately 10 foot perimeter path cleared for construction, access and maintenance. A stormwater detention area will also be necessary. • What is a stormwater detention area? A catchment basin—lagoon or pond—that holds and safely releases rainwater coming off the tank. • What will you do about mosquitoes? The pond is designed to release the water within 12-48 hours. It will be dry most of the time. 480 • What effect will the stormwater lagoon have on hillside stability? It should not have any effect due to its construction in rock. • Where will the access to the reservoir be? Both construction and maintenance access for the new reservoir will be off Carman. A 20 foot paved road will be built from Carman to the tank site. • Will the road be gated? Yes. • Where will the construction staging/laydown area be? Likely in the cleared area off Carman (noted on aerial). • When will we get the construction schedule as it pertains to our neighborhood specifically? About ayear from now we will begin having a pretty good idea of when the Valuga construction will occur That initial schedule may change as the rest of the project proceeds butyou will be updated • How will we be informed of the schedule? Ifyou sign up with your email,you will be on a-1 st that receives regular updates on the Waluga part of the project. Vaughn asked if there was another method of notice that should be used The group indicated that email was fine. • Will Parkhill St. experience any truck traffic? Yes, a modest amount of dump truck traffic will be coming in and out to haul away the debris from the p peline trenching. • Will the equipment be subject to a"No Idle" rule? Some idling is always necessary to bring diesel equipment up to temperature. We will see what kind of idling limitations might be part of the GNP and placed in the construction contract. • Does construction of the reservoir happen at the same time as pipe laying? It is too early to know about that level of detail regarding the construction schedule. • Will heavy construction equipment(concrete,gravel,backhoes,cranes) access off Carman only? Reservoir construction equipment will access off Carman. There will be a minimal amount of equipment accessing the pipeline area from Parkhill, such as a dump truck and backhoe. • If blasting is used will the City inventory the condition of houses around the site? Yes. • How much weekend work are you anticipating? That is hard to predict at this stage of design. • Is there stormwater detention for the existing reservoir? No. It was not a requirement when that facili9 was built. • Is the current reservoir earthquake proof? It was built to the earthquake standards for its time. • Is access to the current reservoir from Parkhill? Yes. • Where does the pipeline go leaving the new reservoir? 481 The waterpOeline from the new reservoir will connect to the existing water system at the intersection of SWf Parkhill Street and SW'Stone Avenue.A future water line may be required to be installed from the new reservoir northerly to Carman Drive, running along Carman to the intersection with Bonita Road, and then running westerly on Bonita to the Bonita Pump station located in Tigard. • Why is a pathway being proposed? A pathway is identified in the Lake Forest Neighborhood Plan. It was also suggested during the recent pre-application conference. Possible options include improving the pathway from Parkhill to Waluga Park, creating a pathway from Parkhill to the new reservoir, completing a pathway from Carman to the new tank or all of the above. This will be a major area of discussion during the GNP deliberations in future meetings.Jane added that the pathway is also identified on the City's Transportation System Plan. • How much of Tigard's water will this system be providing? All of it. • Can Tigard send water to LO in case it's needed? Yes. During the question and answer a number of items were noted for follow-up or as possible components of the GNP. That list includes: • Answers to the questions—Who pays for damage relating to tank flooding? Do property owners need flood insurance? • Idling time limitations • Enforce start and stop times • Limit weekend work • Provide an incentive to get done early • Complete a pre-construction survey of homes • Determine whether a pathway (or what pathway)will be built as part of this project • Discuss pathway issues such as lighting, surface, alignment,safety,vandalism, fencing • Preserve trees for visual barrier • Restore vegetation • Blasting notification system(include Heritage) • Prevention/Safety/Reassurance about blasting • Keep construction schedule online • Maintenance policy Vaughn thanked the group for their productive participation. He suggested that staff will take this input; combine it with the construction program,requirements and policy the City has already identified;and develop a draft GNP for review at the next GNP meeting. He also noted that the project landscape architect will be making backyard visits during October and that information may 482 lead to items to be considered in the GNP. The best time for the next meeting was determined to be early December. Jeff reminded the group to sign up for email notice if they had not done so already. If they received the email notice of this meeting, they were already on the notification list. The meeting adjourned at 8:20. • • 483 484 I Lake Oswego • Tigard Water Partnership Waluga Good Neighbor Plan Meeting 2 Summary Lake Forest Elementary December 14, 201 1 7:00 to 8:30 pm Attendance Total attendance was eight. All of the attendees had participated in the first Good Neighbor Plan (GNP) meeting in September. Jeff Selby,Dave Prock,Ben Johnson and Vaughn Brown were present from the partnership team. Meeting Synopsis Vaughn Brown called the meeting to order and asked participants to introduce themselves. He explained that the meeting was convened to move GNP development along by focusing on the first sections of a staff created draft GNP document. Before reviewing the document Vaughn invited project team members to provide short project update reports. Dave Prock reported that geotech drilling work was being done for the pipeline from east of Boones Ferry west along Douglas and through the park. The information from that investigation will be important to finalizing the precise pipeline alignment. Construction on the pipeline won't begin until at least march. Dave said that Waluga reservoir 2 (WR2) design was on hold until January. The only work going on at the present was the landscaping plan being worked on by Greenworks. He mentioned that the land use application may be filed this month. Jeff reported on the backyard visits conducted by Ben Johnson (Greenworks) and himself. He indicated that a lot of information was shared among residents and the team. A better understanding of the landscape possibilities and property owner needs was gained.Jeff also noted that the team did a briefing for the Lake Forest NA. Jeff discussed the GNP development and approval process. He reminded the group that these kinds of meetings will be held about monthly until we have an acceptable GNP. He said that the plan was to keep both Lake Forest and Waluga NAs in the loop and that each of those associations will be asked to support the GNP. The GNP will become part of the land use process and its commitments will be included in the permit. Ben discussed his view of the landscaping opportunities and challenges gained from backyard visits and his site inspections.The WR2 site is heavily forested and has a lot of native trees that provide a 485 good footing and set the context for future screening and restoration plantings. Much of the public forested area has a significant amount of invasive English Ivy that should be removed to improve the overall health of the tree groves and future plantings. The project's landscape plan will apply to the city-owned property only.There are a couple homes on Parkhill that have a sight line to WR2 but have some or all of their lot line abutting private property. Ben displayed photos of potential native plant materials—both trees and understory. He invited a closer look at the end of the meeting. A neighbor asked if invasives will be required to be dealt with as part of the land use. Jeff said he would follow up with the answer to that question. Another attendee asked how many trees would have to be removed. Dave answered that since final design is not complete,we don't have a number but will report it to the group as soon as it is determined. Jeff added that surveyors will be out on the city site sometime in the next few days.. They will not need access to any private property but they will be visible from backyards. A neighbor reported that a very large drill rig drove down Parkhill recently. The truck was much larger than the one showed in the drilling announcement. It broke limbs as it maneuvered into position and the diesel fumes were strong driving the resident inside.Jeff said he will follow up with the drilling contractor. Another neighbor expressed concern about shutting off access to her elder care home on Douglas. She shared her address so the team could make sure to work around that need. Concerns with blasting were raised again. Dave talked about the kinds of blasting that might be used if it turns out that blasting is necessary. He described one process which uses water under high pressure to fracture the rock which is then scooped out and hauled away. Another process uses low level explosives to fracture rock. The most powerful type of blasting that would be used involves drilling a blast hole—up to 20 feet deep—placing the explosive in the hole and using a blast curtain to cover the blast site. Jeff said blasting was done last year on the LOIS Bryant pump station project. He promised to send the link to the video of that process. Vaughn then led the group through their review of the sections of the draft GNP available at this meeting.He explained that future meetings would cover remaining sections. There was much discussion. He said that the group should identify what they agreed with,what they wanted to edit, and what they wanted to acid that was missing.He reminded the group that their suggestions would have to be reviewed by partnership staff and there was no promise that the group's requests would be included. The team will report on the results of partnership consideration of the input at the next meeting. 486 The following GNP edits were suggested: Purpose section • Outline the communications activities to be used to keep residents informed throughout the construction phases and into operations Key Issues section • Aesthetics—beef up the WR2 structure appearance concern with mention of tank color • Construction—add in"off site" to the worker parking issue • Construction—add in bullets addressing emergency access,location of staging areas,and disruption of the park and ballfield uses • Operations and Maintenance—research some approaches to controlling illicit activity along wooded trails WR2 Site Design The items in the draft were all acceptable.The group suggested changing the wording of"install landscape screening"bullet to talk about the whole site rather than the perimeter to maximize concealment of the structure. Additional bullets suggested: • Use colorized concrete to camouflage the structure—research how other tanks have been camouflaged • Provide partnership assistance (planning and funds) for landscaping in private yards immediately abutting the facility property along Parkhill • Use big trees to screen the structure (Ben said that trees up to 15'are possible) • Begin landscape plantings early (prior to construction) in those areas clear of the construction site in order to establish trees and screening as soon as possible The group asked about possible pathway plans as part of the site design section. Vaughn noted that pathways are usually controversial so the issue was worthy of a dedicated meeting. Notice for that meeting will highlight that pathways are the topic to encourage wider participation. The decisions about pathways will be added into the site design section once they are determined. Jeff reminded the group to sign up for email notice if they had not done so already. If they received the email notice of this meeting, they were already on the notification list.He thanked everyone for their participation. The meeting adjourned at 8:30. 487 488 Lake .Oswego • Tigard Water Partnership .apar„,t,water »ctirry Cor!rr, Waluga Good Neighbor Plan Meeting 3 Summary West End Building January 10, 2012 7:00 to 8:30 pm Attendance Total attendance was eight. Jeff Selby,Dave Prock and Vaughn Brown were present from the • partnership team. Meeting Synopsis Vaughn Brown called the meeting to order and asked participants to introduce themselves. He explained that the meeting was convened to move GNP development along by reviewing adopted neighbor input from the previous meeting and continuing through the draft document. Before reviewing the document Vaughn invited project team members to provide short project update reports. Dave Prock reported that the WR2 plan application submittal would occur in the spring. He noted that design work on this facility is not active at this time but will be picking up in about 5 months. He summarized work at other Partnership facilities: • Clackamas water intake design is moving forward and is nearly complete. • Both the raw water and finished water pipelines are at about the 15% design level. • Wastewater treatment plant conditional use permit is about to be submitted to West Linn • Bonita pump station location has been determined Vaughn then led the group through their review of the remaining sections of the draft GNP. He said the goal was to complete all sections tonight except the Neighborhood Amenities section. As had been agreed previously,that section will have a meeting dedicated to it since it involves discussion of pathways. That will be the focus of the next GNP meeting. All previously suggested GNP additions were accepted with the,exception of the request for Partnership assistance for landscaping in private yards.That item is still under consideration. The following edits were suggested: Planning Process section • Add language that ensures the GNP will be attached to the construction document as a reference document Pipeline Design section 489 • Add-Avoid Heritage trees. • Add language that specifies protecting trees in order to retain screening of WR1. • Specify that designers work with the school district,Lake Grove School and Park Department to coordinate pipeline alignment and construction timing in order to minimize impacts. Construction section • Specify that this section applies to both WR2 and the pipeline. • Add traffic control plan completion before construction commences. • Insert language into the noise and pollution control, erosion control,and traffic control plans requiring taking the GNP into account. • Specify that equipment fueling and maintenance are included as construction work hour limited activities. • Check to see if it is legal for the City to requite the work zone be non-smoking. • Check DEQ or EPA requirements for idling time limits information. Operations and Maintenance section • Add in meeting with City Security Officer to train neighbors in Neighborhood Watch practices. It was suggested that control of illicit activities will be a central point of the next meeting regarding pathways. Jeff indicated that the team would be working with parks staff in planning for the next meeting. Jeff reminded the group to sign up for email notice if they had not done so already. He thanked everyone for their participation. The meeting adjourned at 8:40. 490 topl Lake Oswego • Tigard Water Partnership shotini7'.vot'+ c1y7117ectinq•_�-i 7, r__ Waiu a Good Neighbor Plan Meeting 4 Summary West End Building February 29, 2012 7:00 to 8:30 pm Attendance Total attendance was 11. Jeff Selby,Dave Prock,Eric Day and Vaughn Brown were present from the partnership team. Meeting Synopsis Vaughn Brown called the meeting to order and asked participants to introduce themselves. He explained that the meeting was convened to finish review of the final sections of the GNP draft. The group will look at the disposition of the items suggested at the last meeting and move on to the Neighborhood Amenities section. Before reviewing the document Vaughn invited project team members to provide short project update reports. Dave Frock responded to an earlier question about responsibility for damages from a tank failure. Dave reiterated that tank failure was highly unlikely. He had discussed the issue with the City Attorney however and reported that the responsibility for losses due to a failure would be determined in accordance with Oregon law. While as a general rule a municipality may have responsibility (within statutory limits)where losses result from the municipality's negligence, the actual allocation of liability depends on the particular facts surrounding each occurrence as well as the nature of the claims.The City maintains insurance covering such liabilities.Dave also mentioned that the City requires contractors to maintain insurance for a specified warranty period covering the City against claims resulting from the contractor's negligence. Attendees asked questions about the nature of the City's liability. Dave responded that he was not in a position to respond to as the questions had legal implications that he was not capable of answering. He offered to request that City legal staff attend the next meeting if the group desired. There was general interest in having that on the next agenda. Dave also reported that there is an accessway planned between the new reservoir and the old reservoir. That will allow maintenance crews to access both reservoirs from Carman and eliminate some maintenance trips down Parkhill. He added that design on both the reservoir and this segment of the pipeline was underway and that we should be able to report on the 30%progress sometime in early May. 491 Vaughn then led the group through their review of the draft GNP. He noted that there had been a change in the approach to zoning. Originally, the City owned parcel was going to be changed from its R 7.5 zoning to PNA zoning. Parks was not especially interested in this zoning change and since either zone allows a major utility as a conditional use,it was decided not to change the zoning at this time. This does not change the need to pursue a conditional use permit or the timing of the land use process. Other changes to the draft were explained: WR2 Site Design section • Changed use of"significant" trees to specify that mitigation for trees 5" or greater diameter at breast height removed would be used to maximize screening for area homes. • Keep language stating that trees would be protected to the extent possible. • Add wording that neighbors would be consulted regarding pigment coloration. • Remove the statement about landscape planning assistance for adjoining neighbors from the GNP. The Partnership is committed to providing this assistance but will work with the individual owners rather than place it in this overall neighbor agreement document. Pipeline Design section • Substituted trees 5" or greater dbh language foe significant trees as above. • Add language promising follow-up with neighbors on mitigation plans and sites. This is requested due to the probability that there is not enough room on-site for all the mitigation. • Add residents to the bullet regarding coordination of the Douglas Way pipeline segment. WR2 and Pipeline Construction section • Add"in public right-of-way" to the first bullet. • -Explained that the City is unable to enforce a non-smoking worksite but that the contractor will be required to file a safety plan and be responsible for fire protection at the site_ • Add language prohibiting jake brakes. • Explained that there no DEQ or EPA standards found for diesel use or idling times. Included language that the contractor will be encouraged to use best management practices for both these items. • Include language that construction will follow RCPA standards for tree protection. Operations and Maintenance section • Reported that police will provide Neighborhood Watch training. • Continue to investigate ways to control illicit activity at the site. • Request police patrol of the site especially now that the maintenance road,accessway and access to the existing reservoir create a complete connection between Parkhill and Carman. Neighborhood Amenities section 492 • Add language about improving vegetation by removing invasives in the construction and mitigation zones. • Add language about maintaining the open space character of the reservoir property by disallowing residential development. • Add language prohibiting use of the reservoir site for storage or overnight parking. The question was raised about the possibility of improving the trail from the end of Parkhill down to Waluga Park. Dave responded that the Partnership was not welling to provide any pathway improvements as part of this project. Eric added that Parks expressed no desire for a pathway and explained that any pathway construction as part of this project would not be considered until the land use process had played out. He noted that citizens can lobby for a pathway through that process. Neighbors express disappointment that the pathway to the park was dismissed. They fed that they have cooperated with the project even though they do not want it to happen and feel it will negatively impact their neighborhood and property values. They feel that,in fairness,the project should provide this neighborhood improvement as remediation for the negative impacts. Parks contact information was provided to the group. They will follow up with Parks on this issue. Jeff thanked everyone for attending and sharing their thoughts.He said that the next meeting would be scheduled for early May so that design information could be shared. • The meeting adjourned at 8:20. 493, 494 Lake Oswego •Tigard Water Partnership Waluga Good Neighbor Plan Meeting 5 Summary West End Building May 23, 2012 7:00 to 8:30 pm Attendance . Neighbor attendance was eight. Jeff Selby,Dave Prock, Sean Goris,Brad Moore,Ben Johnson and Vaughn Brown were present from the project team. Meeting Summary Vaughn Brown called the meeting to order. He explained that the meeting was convened to finalise the Good Neighbor Plan (GNP) and provide an update on the latest design progress on the reservoir and pipeline. He then introduced members of the project team present. Vaughn reviewed the changes made to the GNP since the last meeting. Those included: WR2 Site Design section • Added "Consult with neighbors on pigment coloration." to the camouflage bullet. • Added"5" or greater in diameter at breast height(dbh)" to tree removal mitigation bullet. • Added bullet"Protect trees to the extent possible." • Added bullet"Follow-up with neighbors on mitigation plans both on-site and off-site." Pipeline Design section • Added "5" or greater in diameter at breast height(dbh)" to tree removal mitigation bullet. • Added bullet"Protect trees to the extent possible." • Added"and residents" to list of parties to coordinate alignment and construction timing of Douglas Way pipe segment. WR2 and Pipeline Construction section • Added "in public rights-of-way" to first bullet. • Added bullet"Prohibit use of jake brakes." • Added bullet"Encourage use of best management practices for low sulfur diesel and minimizing idling time." • Added bullet"Follow Resource Conservation Protection Area standards for tree protection by placing minimum 6' tall protective fencing around the construction zone at the RCPA boundary which is the dripline/edge of continuous canopy." 495 Operations and.Maintenance section • Added bullet"Request police patrol of the area due to the creation of a more convenient access from Carman to Parkhill." • Added bullet"Prohibit storage or overnight parking at the site." Neighborhood Amenities section • Added bullet"Improve the quality of vegetative cover species on facility site by removing invasive species and replacing them with natives in mitigation zones. Invasives will also be removed in the construction zone." • Added bullet"Maintain open space character by not allowing residential development on the city-owned property." Vaughn asked if there were any other items to be added to the GNP. Requests for new items included: • Add wording to the pathway item in Ivey Issues to Address that includes a pathway from Parkhill to Waluga Park. Vaughn reminded the group of the previous meeting's discussion of this item which referred them to the City Parks Department. It will be added to this section but is not a commitment of the GNP at this time. • Add a bullet to the Pipeline Design commitments "Replace berm to previous height and replant trees." • Add bullet to Construction commitments "Replace trees to the same standard as City uses for other land use developments." Vaughn asked if the group was satisfied with the GNP given tonight's additions. Everyone agreed. He reminded the group that the GNP represents the Partnership's commitment to the neighbors, will be part of the land use application and will be used to help guide design and construction.He noted that the update presentations to follow will demonstrate how the GNP is already influencing how the project proceeds. Brad Moore (project manager for the pipeline) showed a map of alignments for the Douglas Way and Waluga Park pipeline segments. Each will be open trench with a minimum of 4' cover. Installation is expected to move at about 50-100 feet/day. The Douglas Way segment will be done between June and August 2013. Work at Boone's Ferry will take place at night with traffic restored during the day. Douglas Way will be closed to through traffic with local and emergency access available 24/7. The Waluga Park segment is planned for November 2013 to February 2014.He said that the alignment was determined after intensive surveying and was able to avoid taking any trees in Waluga Park.He also pointed out that the Waluga Park parking lot will be restored to a better condition than present and that the Waluga Park parking lot will be restored to a better condition than present. Bicycle and pedestrian access through the park is expected to continue through construction 496 Parks. He was not sure if motor vehicle access to the parkinglot pending upcoming discussion with would be able to be maintained. Sean Gods (project manager for reservoir design)walked the group through the site design for new Waluga reservoir. The tank roof has been reconfigured as a dome which will lower the sidewalls about 10'and increase the diameter to 130'.The domed roof will reach nearly 50 feet at its pinnacle. The tank will be a concrete/cable construction style built to the highest current seismic standards. He showed a map of the limits of disturbed area. He also pointed out the water detention facilities being built on the site.All the facilities are contained within allowed set-backs on the site.Access for tank construction will be from Carman. The existing access road will be hardened and widened with a better gate installed at Carman. There will be a need to use Parkhill to access the pipeline segment connecting to the tank. Sean estimated that will last about 1 month. The entire construction zone will be fenced for security and safety. Workers will park off site and be bused in. No jake brakes are allowed and the contractor will be encouraged to follow diesel idling best management practices.There will be some large equipment used and rock excavation required. It is possible that the rock can be ripped but some blasting may be required. Ripping rock creates considerable noise for a long period while blasting has the potential to create shorter term noise by reducing the excavation effort.Work hours are from 7am-6pm on weekdays, 8am-6pm on Saturdays with no work allowed on Sunday without approval of the City Manager. Construction is scheduled for July 2014—July 2015. Ben Johnson (lead landscape architect) showed a map of the site disturbance zone. He said that the construction footprint has been minimized and that the team worked to preserve perimeter trees and enhance the forest character of the site. He noted that the site is covered with blackberry and ivy—much of which will be removed and replaced with native shrub understory. Tree removal will begin this winter during the time birds aren't nesting. There are 171 non-exempt (5" or greater dbh) trees. The average diameter is 15-16".They will be mitigated on a more than 1- to-1 basis with 254 trees being replanted.All mitigation will be on-site and will help camouflage the tank. Ben showed a viewpoint diagram that very little of the reservoir visible from Parkhill Street and that small portion being obscured by trees.A neighbor requested a viewpoint from the Manchester side at the land use meeting. Ben discussed plans to preserve the Oak and Evergreen trees at the end of Parkhill. It was requested that the pipeline be adjusted to avoid as much of the berm as possible.Ben said that trees in the berm right-of-way will be replanted. There was a request for the arborist's report which Ben said he would supply. 497 1 Vaughngave an overview of the upcoming land use process.There will be a neighborhood meeting g p g with oral and written testimony collected.The application is planned to be submitted in early July so the neighborhood meeting will be sometime in June. Everyone within 300'of the site will be notified. • The meeting adjourned ac$.30. 498 z oy,�eao r, a Door to door along Parkhill, Manchester and Hartford 4-26-13 Name Address Comment Liu Dawning 15601 Not home, Left letter Manchester Powell Jerry and 15585 Spoke for about 15 minutes. She would like to see the latest Janice Manchester seismic report, which was their biggest concern. They do not want to see tank Miller, Gerald 15542 Not home, Left letter Manchester Hauck, Sara and Tom 15584 Not home, Left letter Manchester Stacey, Jeffrey 15606 Not home, Left letter Manchester Vanleeuwen, John 4937 Hartford Not home, Left letter and Christine Yang, Ruoqun and 4959 Hartford Left letter with daughter who I spoke with for a few minutes Guang PI. Roden, Cherri 4973 Hartford Not home, Left letter Pl. Feng, Jingbin and 4991 Hartford Not home, Left letter Betty PI. Salita, James 5005 Hartford Not home, Left letter Wagner, John & Mary 5017 Hartford Spoke with Mr. Wagner. He indicated that he really hadn't been Anne PI. following the issues and he had no questions. I left the letter so that he would have our contact information. Yang, Xin and 5026 Hartford Non English speaker. Left letter; asked to give it to family Chenwei PI. members Kao, Bertha& Lavery, 5008 Hartford Not home, left letter Brian Pi. Keulks, Gavin and 4994 Hartford Mr. Keulks has been in the neighborhood 2 months; not aware of Preeti Pl. the WR2. We spoke about the land use schedule, left him a color , rendering of the site plan. He had no questions; left the letter Bennett, Lanny and 5037 Parkhill Not home; left letter Beth Perkins, Thomas & 4993 Parkhill Chatted for 15 minutes. He does not believe that the project is Elizabeth needed and is against it. Only benefits Tigard. They have other • concerns in the neighborhood including no sidewalk or pathway on Carman.We talked about ways to bring this issue to Council's attention. Resident 4973 Parkhill Not home; left letter Waterbury, Curtis & 4933 Parkhill Not home. Left letter with note to call about a meeting first week of Amy June. (Amy has been main organizer of neighborhood) Koenig,Anthony 4921 Parkhill Not home, left letter Resident (Sarah 4911 Parkhill Spoke with Ms. McDermott about the land use process. She McDermott) appreciated our efforts at sharing info. Shared her contact • information: sarahmcdermed(a7.vahoo.com; 503-926-2200. 499 Name Address Comment Nelson, Douglas & 4916 Parkhill Talked to Ms. Nelson. She wants to make sure that the trucks Alice won't access the project/site form Parkhill. She was keeping up with what has occurred in West Linn. I told her that the only time she would see trucks on Parkhill may be when the pipeline at the end of the street was installed. For reservoir construction,all access would be from Carman. Mock, Gerald G 4920 Parkhill Spoke to Mr. Mock. Shared info about the land use schedule. He did not have any questions; said he planned to be at the hearing. Ko,Tamara 4932 Parkhill Not home; left letter(no soliciting sign) Kaufman,Wallace 4952 Parkhill Not home; left letter(no soliciting sign) Resident 4988 Parkhill Talked to the owner. He said he built his own house. He is a member of LOCAL and gets all of his information from them. Do not need the project; too expensive; only benefits Tigard. Don't need "jobs like mine to go around talking about the project". Rosenblatt, Milton & 5022 Parkhill Talked to both residents. Shared information about the project, land Leila use, schedule. They said it doesn't really impact them as they are at the west end of the street, Left letter Eve Edwards 4945 Parkhill Eve was not home; left letter with note. Aldrich, Ruthie? ? Pancoast, Patrick & 4904? Parkhill Spoke with who may have been Mr. Pancoast. Told him about Jennifer process. He appeared to not want to discuss the project. 5015 Parkhill Not on walking list Jane Heisler,Communications Director 500 LAKE OSWEGO TIGARD WATER PARTNERSHIP OP: 4:f01 Kruse��lay PO Box 369 40 Lake Oswego, OR 97034 5O3- i97-6502 www.iotigardwater.org April 26,2013 Dear Neighbor; I am sorry that I missed you today. I visited your house to share information about the Lake Oswego Tigard Water Partnership Project and about plans to construct a new Waluga water reservoir in your neighborhood.l want to make sure you understand the land use process and have any information you need about the project. The Partnership intends to submit a land use application to the City of Lake Oswego early this summer for the project.That means the city's Development Review Commission (DRC)will review the application sometime in the fall of 2013. This is a public process you can participate in and we will notify you of the DRC hearing date. This process is happening much later than we planned originally, but we are still preparing for construction of the water pipelines through Waluga Park during the winter of 2013,with reservoir construction starting in summer 2014. Neighbors have had a lot of questions about this new facility and have expressed concerns,which is why I was in the neighborhood to visit with you personally. The project team has worked very hard to answer every question we've received and provide information about what the new reservoir will look like and about the safety standards to which it will be built. I would like to share this information with you. If you would like to take me up on my offer to discuss the project together, please call or email me. My contact information is provided below. I look forward to the opportunity to talk with you and make sure your questions are answered. Sincerely, rr I / Jane Heisler,Communications Director phone: {503)697-6573 Lake Oswego Tigard Water Project email:jheisler@ci.oswego.or.us To visit the Waluga page of the project website go to: http://lotigardwater.org/?p=waluga-reservoir 501 502 Lake Oswego s Tigard Water Partnership simony water-co/ Waluga Reservoir Neighbors Meeting Summary Tuesday, May 28, 2013 7:00 to 8:30 p.m. West End Building Attendance Total signed in attendance was 11,with 12 present. Dave Frock,Eric Day, Sean Goris,Ben Johnson,Pete Oveson,Corianne Hart,Eric Eisemann,Jane Heisler and Vaughn Brown were present from the project team. Meeting Summary Vaughn called the meeting to order and described the primary meeting purposes: • Update neighbors on the Waluga reservoir and associated pipeline conditional use application process and schedule • Review current plans and designs for both facilities emphasizing any changes since the last meeting in June 2012 • Provide any other information to neighbors and answer any questions that neighbors may have He introduced the project team noting that a lot of project staff was here in order to provide the most informed responses and up--to-date information possible. He explained that the first part of the meeting would include a series of short presentations followed by an open question and comment period. Vaughn turned the project overview segment of the meeting to Eric Day who reviewed the land use process and schedule. He pointed out that the process is designed to allow ample oppdrtunity for public participation. He also provided an overview of the Good Neighbor Plan which was developed through a series of meetings with neighbors in 2011-12. Dave Prock described the overall LO-Tigard Partnership project emphasizing the role of the Waluga reservoir and associated pipeline within the project. He showed a map of the pipeline alignment from Boones Ferry Road through Waluga Park noting that work on Douglas Way around the school would happen during summer months and work in Waluga Park would happen during the winter. He also pointed out that the Waluga Park parking lot will be restored to a better condition than present. Sean Goris,reservoir design lead,walked the group through the site design for the new Waluga reservoir.The reservoir is needed to provide additional water storage for Lake Oswego,increase water pressure in sub-standard pressure areas,improve service by upgrading connections between the two reservoirs,and provide storage for pass-through to Tigard. The reservoir is contained within 503 the set-backs on existing City owned property.The tank will have approximately 40 foot sidewalls with a domed roof that will reach nearly 50 feet at its highest point. He showed a map of the limits of disturbed area and said that houses on the property will be removed. He also pointed out the water detention facilities being built on the site.Access for the reservoir construction will be from Carman Drive with a left-in/right-out traffic pattern from and to Carman Drive to the east. The existing access road will be improved to serve construction vehicles and equipment. It will also have improved gating.All reservoir construction staging and storage will be on-site. He explained that access for some of the pipeline work will occur through the neighborhood via Parkhill. Ben Johnson,landscape architect, explained that his job is to restore the site and to screen the reservoir.That includes removing invasive species inside and outside the construction limits, planting native shrubs and bushes in their place,and replanting trees well beyond what is required. He showed diagrams of sight lines of the reservoir and said that colorization of the tank along with the extensive tree and understory restoration will make it difficult for most people to see any of the tank even when the trees lose their leaves. Pete Oveson,project engineer, showed the current construction schedule. Waluga pipeline work is anticipated to happen during a four-month period, either from November 2013 to February 2014 or from November 2014 to February 2015. (Note: the dates on the schedule slide are incorrect).The, first two months are pipeline construction,with site restoration in the final two months. Pete said that restoration will likely take less than two months. Reservoir construction is slated for the fifteen months from April 2014 to June 2015 with two months of site preparation,eleven months of installation, and two months of site restoration. Pete also showed the construction traffic routes contractors will be required to use.Trucks will use Carman,Kruse Way,Boones Ferry and Quarry The routes are designed to avoid residential areas to the extent possible. The busiest days will be when concrete is poured and will result in up to 123 one way trips to and from the site. The percentage increase in traffic along the designated routes even on those busiest days is not expected to increase congestion. Pete did say that people will notice more trucks in the traffic mix. He then walked the group through a series of slides showing a recent Lake Oswego reservoir construction project. Vaughn opened the meeting for attendee questions and comments. Discussion among neighbors and staff followed. The main points are.summarized below. • The city owned reservoir property is a resource conservation zone requiring that 50% of the trees be protected. The city must follow the same zoning codes as other development projects. Owners of a neighboring property were surprised to learn that their property would also be subject to that requirement, should it still exist,when and if they decide to develop. • The reservoir follows the required minimum setback of 30 feet. It is 34 feet at its nearest setback point from the westerly property boundary. Even so, nearby property owners are still worried about their property values. 504 • All reservoir workers will be bused to the site.There will be a ver y small number of individual supervisor and subcontractor vehicles that may visit the site but are not expected to use any on- street parking. • A neighbor pointed out that the Oregon Resiliency Plan came out in February and wondered what the project plans are for a Cascadian subduction zone event.The reservoir is being designed based for a"composite" event,including a 9.0 CSZ (equivalent to the Resiliency event) and a local crustal fault quake. It's a very robust design that actually is ahead of the current structural code. There are no baffles to handle water sloshing around during an event but the roof is being connected to the walls to prevent separation which is the purpose of baffling. • The zoning for the reservoir property is R-7.5 residential. Height limit for a conditional use public facility is 50 feet. The tank is just under 50 feet. • It was pointed out that the Kruse Village development will add traffic to Kruse and Carman. Those projected increases were not included in the traffic counts presented. Those will be added in but it is not known when the Kruse Village project will actually be constructed. Staff agreed to look into the traffic numbers for Kruse Village. • The Friends of Waluga Park are interested in making sure that the spring that seeps under the parking lot not be eliminated by parking lot improvements. It may be a source of water following a major event and should be protected. Drainage pipe will be laid only under the lot and will pipe water to a current outlet structure. No other work affecting the spring or wetland will be undertaken. • Pipeline construction along Douglas Way will not shut off local or emergency access to properties along the street. • Even though neighbors have asked for pathways on Quarry, Carman,Waluga Drive, from Parkhill to the park,and through the park they have not been added to the project. The Partnership has not included those amenities in the application. Conditions of approval may be added to the application by the Development Review Commission. The application review process provides opportunities to suggest pathways be included. • Construction start times on Saturday are 8:00 a.m. according to city policy. Contractors are not expected to work on Saturdays but have that option if the project begins to run behind schedule. Requiring a later Saturday start time would likely increase the construction cost and is not part of the construction management plan or conditions of approval at this time. • Frustration was expressed that the Partnership will pay.a $5M fee to West Linn but is not adding any significant amenities for Waluga neighbors. West Linn imposed the right of way license fee on the Partnership as part of their land use approval,which they can do by law. The Good Neighbor process identified a number of actions to address neighbor concerns with reservoir site and pipeline design and construction,ongoing operations and maintenance, amenities,and on-going communications including tank colorization, screening,private back yard landscaping screening assistance, site storage and overnight parking restrictions. Neighbors were reminded of their opportunity to ask for other conditions during the application approval process. 505 • Distrust of the city's transparency and authentic interest in neighbors'issues was expressed. The outreach process for Waluga has been conducted in an open,honest and respectful manner. Not all issues were able to be resolved but all were considered and significant efforts were made to satisfy neighbor requests. Vaughn adjourned the meeting at approximately 9:00 p.m. Jane reiterated that we will send out an updated construction schedule. 506 Attachment C: Good Neighbor Plan Purpose The Lake Oswego Tigard Water Partnership (Partnership) and Waluga reservoir/pipeline neighbors (including the Waluga and Lake Forest Neighborhood Associations)have collaborated to develop a Good Neighbor Plan (GNP)that will guide facility and site design, construction and operation for the Partnership's new Waluga Reservoir 2 (WR2)and associated piping within the Waluga area. The plan reflects a good faith effort and commitment by all parties to ensure the Partnership facilities will be compatible with their surroundings and benefit the neighborhood. The Partnership's goal is to complete these facilities on schedule to serve the communities' safe and reliable drinking water needs cost-effectively, for years to come. The shared goals of the Partnership and the neighbors are to see that the facilities are built and operated with minimal impact on the neighborhood's quality of life and to ensure that timely,on-going communications about the project occur at key project benchmarks to solicit input into project decisions and provide information updates throughout construction of the facilities. All parties acknowledge this GNP reflects a current understanding of future conditions and plans. As circumstances change,the Partnership and neighborhood fully expect to update the GNP with any necessary changes to achieve the parties' mutual goal—providing a reliable and adequate supply of safe drinking water while minimizing neighborhood impacts. Need for the Project Lake Oswego's water system is near capacity, and key facilities need expansion and upgrades including increased storage on the city-owned Waluga site and the associated connecting pipelines. The existing Waluga reservoir tank stores approximately 4.0 million gallons (MG). Partnership water supply design criteria indicate that an additional 3.5 MG of storage capacity is needed at the Waluga site to meet system needs, maintain reliable water supply to Lake Oswego, improve water pressures in the Waluga pressure zone, and enable water supply to Tigard. WR2 will provide adequate capacity for emergencies and fire suppression and improved pressure in this part of the Lake Oswego water system. It also supplies additional water when peak demand exceeds immediate supply and treatment capacity, and enables increased water supply to Tigard. Water for Tigard will not be stored at Waluga beyond the basic volumes needed to enable transfer of water between the two systems. Planning Process, This GNP process began with preliminary meetings in July and September of 2010. Interested neighbors were asked to share their concerns, issues and needs regarding the proposed new 507 WR2. That input was carried over into the development of a GNP document that included five meetings with neighbors over an eight month period from September,2011 to May 2012. The process included one-on-one meetings during October 2011 with residents bordering Stone Avenue—the alignment for a new pipeline—and backyard visits to properties bordering the City's reservoir property. In addition, a pre-application meeting was held on July 14, 2011. Findings from these meetings were incorporated into the GNP. Once the GNP is finalized with interested neighbors, it will be included with Lake Oswego's land use application for the WR2 and pipeline facilities. The WR2 site is zoned R-7.5. Under Lake Oswego's Zoning Code the storage reservoir is defined as "Utility,major"which is allowed in the current zoning as a conditional use. To some extent final site design,buffering, pathway location, etc., will be determined through Lake Oswego's conditional use permitting process. The GNP will be provided to the WR2 and pipeline design teams and later, the selected contractor(s). Portions of the agreement will be made requirements of the construction contract. Key Issues to Address Throughout the meeting and discussion process with neighbors a number of questions and concerns emerged surrounding the design and construction of the new WR2 and associated connecting pipeline. The Partnership understands these issues and is committed to addressing them to ensure this project is sensitive to neighborhood concerns about safety, aesthetics and site layout. WR2 Safety • Earthquake risk causing WR2 failure/water release • Flood control in case of WR2 failure Aesthetics • Color the structure to help it blend into the surroundings • Visibility from homes and yards • Loss of trees due to WR2 installation • Preservation of significant trees for forest protection and visual barrier purposes • Restore vegetation for environmental and visual barrier purposes Construction • Truck and equipment impacts on Parkhill traffic causing safety issues for pedestrians and bicyclists—especially children • Truck and equipment traffic limiting access to homes • Truck and equipment idling—air pollution 508 • Work schedule impacting residential Iiving conditions • Providing off-site parking for construction workers • Maintaining emergency vehicle access to residences during construction • Locating WR2 staging areas on the city site • Locating pipeline staging areas to minimize visual, safety and traffic impacts to residential areas • Minimizing disruption to Waluga Park,parking areas and the ballfield users • Need for incentives for efficient construction and accelerated completion • Construction noise and mess • Blasting damage to homes, interference with daily life and need for reassurance of safety Operations and Maintenance • Increased need to access site • NegIected future maintenance creating neighborhood nuisance • Illicit activity at site Neighborhood Amenities • Improved pedestrian and bicycle connections through the neighborhood • Pathway proposed on WR2 site and along Carman Drive as in Lake Forest Neighborhood Plan • Pathway from Parkhill Street to Waluga Park for local access to school and park • Concerns about pathway issues such as Iighting, surface, alignment, safety,vandalism, and fencing GNP Commitments WR2 Site Design WR2 will be designed to serve the needs of the Partnership water supply system while incorporating features and construction practices that address safety and aesthetic issues described above to the greatest feasible extent. • Locate WR2 as far from homes as is technically and economically feasible. • Camouflage the WR2 structure itself using pigmented concrete. Consult with neighbors on pigment coloration. • Install landscape screening around the perimeter of WR2. • Protect trees to the extent possible. • Mitigate for all trees 5"or greater in diameter at breast height(dbh) removed for facility construction in onsite locations to maximize screening effect for area homes. • Protect trees to the extent possible. • Replant trees and shrubs to the same standard as would apply to a private development. • Follow-up with neighbors on mitigation plans both on-site and off-site. • 509 i4 • Begin landscape plantings early(prior to construction) in those areas clear of the construction site in order to establish trees and screening as soon as possible. • Use largest nursery stock trees available that assure long-term viability and maximize early screening.Eight to ten feet trees have been planted for other Lake Oswego public projects. • Design and construct WR2 to the current standards for earthquake safety for critical facilities. • Install water quality facilities to control and treat runoff. • Install a gate on Carman Road access,entrance to restrict vehicle access to only authorized vehicles. Pipeline Design The finished water pipeline from Lower Boones Ferry Road through Waluga Park connecting the new Waluga Reservoir will be aligned to minimize neighborhood impacts. • Install the pipeline in an alignment that protects existing trees and the berm to maximum extent possible in order to provide continued screening of WR1. • Mitigate for all trees 5"or greater in diameter at breast height(dbh)removed in onsite locations to maintain screening effect for area homes. • Protect trees (public and private)to the extent possible. • Avoid Heritage trees. • Replace the berm and vegetation to re-establish the current level of screening of the existing tank. • Work with Parks Department to minimize pipeline impacts in Waluga Park. • Work with School District, Lake Grove School and residents to coordinate alignment and construction timing of Douglas Way pipeline segment. • Install pipeline near Lake Grove Elementary during non-school period. • Design pipeline to be compatible with the Boones Ferry Road Refinement Plan. WR2 and Pipeline Construction Construction contracts will include requirements that define actions aimed at addressing the construction and traffic management issues outlined above. • Ensure safe pedestrian, bicycle and vehicle traffic during construction in public rights-of- way. • Maintain pedestrian, bicycle and emergency vehicle access to area homes. • Secure work areas at all times to protect residents from accidents and injury. • Provide off-site parking for construction workers. • Use visible identification badges for construction workers. • Require contractor to provide for the safety of the construction site, including fire safety. • Restore pavement to pre-construction conditions. 510 • Establish and enforce daily construction(including noise-producing activity)work hours (7:00 a.m.to 6:00 p.m. Mon-Fri; 8:00 a.m.to 6:00 p.m.on Saturdays;no work on Sundays or major holidays without prior approval of the City of Lake Oswego and notification of affected neighbors via City's project email list). • Prohibit use of jake brakes. • Encourage use of best management practices for Iow sulfur diesel and minimizing idling time. • Follow Resource Conservation Protection Area standards for tree protection by placing minimum 6' tall protective fencing around the construction zone at the RCPA boundary which is the dripline/edge of continuous canopy. • Install tree protection fencing to protect the impact-free dripline during construction. • Replace trees to the same standard as City uses for other land use developments. • Complete a construction management plan will take into account GNP preferences. It will include a: 1. Pollution control mitigation plan 2. Erosion control plan 3. Traffic control plan • Complete a pre-construction survey of area homes if blasting is necessary. • Institute a blasting notification system (include Heritage). • Use liquidated damages provision and lump sum contract as early construction completion incentives. • Maintain a project hotline for reporting citizen concerns during construction. Keep an updated construction schedule online. Operation and Maintenance Ongoing operations and maintenance procedures will be conducted according to the following procedures. • Access WR2 from Carman Drive for all operations and maintenance activities. • Investigate and consider innovative ways to control illicit activities at the site • Schedule a City Security Officer to conduct Neighborhood Watch training session with site neighbors. • Request police patrol of the area due to the creation of a more convenient access from Carman to Parkhill. • Prohibit storage or overnight parking at the site. Neighborhood Amenities The Partnership goal is to be a good neighbor. The Partnership wants to offset the impacts of having these facilities located in a residential setting. Neighbors have expressed their desire to see the following items be included in the construction package for WR2 and the pipeline. 511 • Improve quality of vegetative cover species on facility site by removing invasive species and replacing them with natives in mitigation zones. Invasives will also be removed in the construction zone. • Maintain open space character by not allowing residential development on the city- owned property. On-going communications Neighborhood input does not end with the creation of the GNP. At key benchmarks in the design phase the project team will schedule update meetings with neighbors and the Lake Forest and Waluga Neighborhood Associations to get feedback on design features. The Lake Oswego permit process also invites community input. Notice of those meetings and public hearings will be sent via mail/email,posted on the website and noticed in the Lake Oswego Review. During construction the schedule will be maintained on the project website. Notice of construction start-up and special operations will be provided via email and/or door hangers. The most timely and effective means of communication will be used to keep neighbors informed of construction activity and progress. Contact information For more information about the.Partnership, Good Neighbor Plan implementation, or to get your questions answered: Jeff Selby, Citizen Information Coordinator Lake Oswego—Tigard Water Partnership 503.697.6502 jselby@ci.oswego.or.us Project Hotline—503.697.6502 512 } Selby, Jeff ►m: Heisler, Jane .nt: Friday, May 11, 2012 10:44 AM To: Cheryl Uchida; Cheryl Uchida; Mary Turnock; Carolyn Krebs Cc: Selby, Jeff Subject: Waluga Reservoir 2 CUP and DR Required NH Meeting • Cheryl, Carolyn and Mary The time is approaching for the required neighborhood meeting for the new reservoir. Since both Lake Forest and Waluga boundaries are within the reservoir property, we were thinking of having one meeting for both neighborhoods. That requires agreement on which date of the three options that the City, as applicant, proposes. We are proposing June 7, 13 or 14. Please let me know within the required 7 days (by May 18) or sooner if possible which day(s) work best for your group. Please contact me or Jeff Selby if you have any questions: We are both out of the office today but will return on Monday. Thank you. Sent from my iPhone • • 513 ,Selby, Jeff411 *m: Cheryl Uchida[uchida.cheryl©gmail.comj Friday, May 18, 2012 8:01 AM To: Selby, Jeff Subject: Re: Results of pit digging at WR2 and Waluga Reservoir Sites Thanks for your explanations. Board members, although weary of this project, have selected June 7 for the required meeting. Cheryl On Fri, May 18,2012 at 7:45 AM, Selby,Jeff<jselbv a.ci.oswego.or.us>wrote: Hi Cheryl, The geotethnical borings show the depth and strength of rock along the pipe alignment. This information is then included in the engineering plans to ensure contractors bidding on the project are aware of the site conditions. I I rr,e! presence of shallow or hard rock does not preclude pipe installation, but does affect the cost and methods the tractor will use to install the pipeline. The geotechnical report is still in draft form, but the design engineers have determined that the presence of any rock encountered will not result in an overly expensive project or overly difficult construction methods. I hope that answers your question better. Also,what date did you pick for the required public meeting? Thanks! Jeff lelby 1 514 • Selby, Jeff '^am: jeff novak [cohollc@hotmail.com] :nt: Thursday, June 07, 2012 1:20 PM To: Selby, Jeff Cc: Cheryl Uchida Subject: RE: Waluga Reservoir Land Use Meeting Tonight No problem. Thanks. • Anything new or unusual from last meeting? From: Selby, Jeff [manta:jselby(aci.oswego.or.us] Sent: Thursday,June 07, 2012 10:28 AM To: jnovak(apobox.com Subject: Waluga Reservoir Land Use Meeting Tonight Importance: High Hello Jeff, The Lake Oswego Tigard Water Partnership,is holding a Public Meeting tonight for Land Use for the proposed Waluga Reservoir. We mailed out notice to all neighbors within 300 ft of the site, but we failed to send written notice to the Neighborhood -sociation Chairs—my apologies for the short notice. I have spoken with Cheryl Uchida and she says she would be happy to represent the neighborhood association with your blessing. We will meet at the West End Building in the Willamette Room from 7:00p.m.to 8:30 p.m.tonight. apologize for not getting the letter to you. Please let me know if you can attend or let Cheryl represent the NA. Thanks, Jeff Jeff Selby Citizen Information Coordinator Lake Oswego Tigard Water Partnership p.503.697.6514 f.503.534.5229 PUBLIC RECORDS LAW DISCLOSURE This e-mail Is a public record or the City of Lake Oswego and is subject to public disclosure unless exempt from disclosure under Oregon Public Records Law.This email Is subject to the State Retention Schedule. 1 • 515 Selby, Jeff nm: Selby,Jeff Thursday, June 07, 2012 9:29 AM • To: Mary Turnock Subject: Tonight's Waluga Public Meeting Hello Mary, Thanks for your understanding this morning. The meeting is at the West End Building from 7:00 p.m.to 8:30 p.m. We will be in the Sandy Room,which is downstairs. I would recommend entering the building via the skybridge(led fir) and using the interior stairway to access the room. Please let me know if you have any questions. Thanks, Jeff Jeff Selby Citizen Information Coordinator Lake Oswego•Tigard Water Partnership p.503.697.6514 c '703'534.5229 1 516 • CITY OF LAKE OSWEGO LAIMOSW LAKE OSWEGO TIGARD WATER PARTNERSHIP etottnnlal 19104g0 4101 Kruse Way PO Box 369 Lake Oswego,OR 97034 503-635-0270 www.ci.oswego.or.us Re: Proposed Meeting to Discuss Conditional Use, Design Review and Sensitive Lands Applications for a proposed water storage reservoir Just north of Waluga Park. Dear Property Owner or Resident: PLEASE NOTE THAT THE FIGURE ON THE REVERSE SIDE WAS INADVERTENTLY LEFT OFF THE PREVIOUS LETTER MAILED LAST WEEK. PLEASE ACCEPT OUR APOLOGIES FOR THE OMISSION. You are cordially invited to a meeting to discuss the above-referenced land use application the City of Lake Oswego will be submitting in the near future. Prior to submission for land use review and approval,we would like to work with the neighborhood to identify and address potential issues regarding the proposal. It is our hope that taking neighborhood concerns into consideration will result in a better application. Meeting to Discuss Waluga Reservoir Proposal Thursday,June 7, 2012 7:00pm West End Building• Sandy Room . 4101 Kruse Way, Lake Oswego, OR 97035 Refreshments Provided You are being invited because you live within 300 feet of the proposed site or are a neighborhood chair, per the City's Code Section 50.77.025. The City will be proposing the following: © A Conditional Use Permit for a "Major Public Facility."The City is proposing to construct a water storage reservoir at the location identified on the reverse of this letter as part of the Lake Oswego— Tigard Water Partnership. • A Design Review Application. This is required for Major Public Facilities and will focu s J us on the appearance and design of the structure,screening, buffering, and landscaping. o A Sensitive Lands Application.The property is located within a Resource Conservation Area. Please feel free to call me at 503.697.6502 for additional information. Sincerely, JONA y4. :sic Day,Senior Planner,Lake Oswego-Tigard Water Partnership ���RpARYN�� Jack Hoffman,Mayor o Jeff Gudman, Councilor a Donna Jordan,Councilor Mike Kehoe, Councilor n Sally Moncrieff Councilor I/ Mary Olson,Councilor n Bill Tierney, Councilor 517 • of e, ' ';"F. , 1 }• •:r'� �') \ . +•5 • • ' 1. 'r'.f'Fy �� I�ja r,}� ' • • ' e Y y 'I I: '4. 1 .f d VI 1-.. 'V .. A 4, '. ' ... X . \ ir " r•v, 4/16-Ai—r- 1111)4x, • ...-..-. , o itiol_11/4931K 45 - ir• . , • • • t '� if { .a ��r f. y! Y1 a -3.5MQH� i �e.a 1 e4•, r • 4.` r �! 1rJ I 1 �• ' , : -r• A 1. o 4 :'.:-1"3•:le 1 1''si . r . :;(V'-t'1. a 'r Existing Watuga Resent Q p ! ; ' 1 ,..1 b,,..411,.' ' L :t4t1..:' • • #4. T' •.a tit Y — - •.� J �r. .4 ••a f ly• ' , . ' '' l r r i. _J City of Lake Oswego Properly ' ' .e r- ' Y . , 0 100 ZOO ct1 • -rt • Locations shown are approximate. • �;.,t °„T a r ow • • 518 L OSO, CitJi1 eexcMu�,a awio E tCQQ4/ OSWEGO 4_- _ _ OREGON CE RCATl4N OF MAILiNG STATE OF OREGON ) County of Clackamas ) I, Vanessa Thomas, certify that I am the Administrative Support for the Lake Oswego Tigard Water Partnership, City of Lake Oswego, Oregon, a municipal corporation, and that on May 18, 2012, l caused to have mailed to each of the persons on the attached list a notice of public meeting scheduled for 7:00 p.m., June 7, 2012, a copy of which notice so mailed is attached hereto and made a part of hereof. I further state that said notices were enclosed in envelope plainly addressed to said persons and were deposited on the date indicated above in the United States Post Office at Lake Oswego, Oregon with postage prepaid thereon. Vanessa Thomas Administrative Support Lake Oswego Tigard Water Parternship • 519 . . .. • . . • . . . . . . . . . • . . , . . . . . . . . . , . . . . . - . . . • . I . . . , . . .. I +.0 • r I . . 5 • I • 520 • useAvery'0' template 51604P , reef Paper ---- expose d'op•up EdgeTM A 21E07AA00102 21E07AA00200 21E07AA00300 SHORENSTEIN PROPERTIES LLC PIERCE ROBERTA WADE CHERNOBELSKY MARK N 235 MONTGOMERY ST FL 16 547 N SHORE RD 6530 SW 89TH PL FRANCISCO, CA 94104-3104 LAKE OSWEGO, OR 97034-3813 TIGARD, OR 97223-7108 21E07AA00300 21E07AA00400 • 21E07AA00500 CURRENNT�REr DENT SMITH MICHAEL& DARCIE BLIZZARD DOUG & KRISTY 4710 fi i 6b6 \ BOYD-SMITH 4345 WEST BAY RD LAK iSWEGO, OR 97035-2532 4694 CARMAN DR LAKE OSWEGO, OR 97035-5525 LAKE OSWEGO, OR 97035-2536 21E07AA00500 21E07AA00600 21E07AA00600 CURRENT RESIDENT MANN ERICJ CURRENT RESIDENT 4662 CARMAN DR 1980 INDIAN TRAIL 15119 QUARRY RD LAKE OSWEGO, OR 97035-2530 LAKE OSWEGO, OR 97034-3602 LAKE OSWEGO, OR 97035-2525 21E07AA00701 21E07AA00703 21E07AA00704 LABS MAXINE ROBERTA CUTLIP MINA BRIEDIS NOWELL A 15115 QUARRY RD 15121 QUARRY RD 4319 SANDNE$ LAKE OSWEGO, OR 97035-2525 LAKE OSWEGO, OR 97035-2525 NORWAY, 21E07AA00704 21E07AA00705 21E07AA00800 CURRENT RESIDENT GREER KEVIN J • STEVENS GARY D & MARGIE L 15133 QUARRY RD 15139 QUARRY RD 15199 QUARRY RD LAKE OSWEGO, OR 97035-2525 LAKE OSWEGO, OR 97035-2525 LAKE OSWEGO, OR 97035-2525 17AA00900 21E07AA00901 21E07AA00901 L,..,rdOFF DOUG L CO-TRUSTEE PCG REO HOLDINGS LLC CURRENT RESIDENT 15203 QUARRY RD 5032 PARKWAY PLAZA BLVD 15209 QUARRY RD • LAKE OSWEGO, OR 97035-2537 CHARLOTTE, NC 28217-1918 LAKE OSWEGO, OR 97035-2537 21E07AA01000 21E07AC00101 21E07AC00102 WILLIAMS ROGER FLOYD FU JOANNA KIT PING & DAVID W HUGHES JOANNE V TRUSTEE 15211 QUARRY RD PENOYER 15242 CANDLEWOOD CT LAKE OSWEGO, OR 97035-2537 15210 CANDLEWOOD CT LAKE OSWEGO, OR 97035-3377 LAKE OSWEGO, OR 97035-3377 21E07AC00103 21E07AC00104 21E07AC00105 HAGMAIER ROBERT L &WYN L KENWORTH CARYL L JABR KHALIL&JESICA 15254 CANDLE WOOD CT 15266 CANDLEWOOD CT 15261 CANDLEWOOD CT LAKE OSWEGO, OR 97035-3377 LAKE OSWEGO, OR 97035-3377 LAKE OSWEGO, OR 97035-3377 21E07AC00106 21E07AC00107 21E07AC00108 SLICKERS JENNIFER E CLAPPER AVRUM Z& NANETTE N VERLINICH RAY& MARTHA 15249 CANDLEWOOD CT 15237 CANDLEWOOD CT 15225 CANDLEWOOD'CT LAKE OSWEGO, OR 97035-3377 LAKE OSWEGO, OR 97035-3377 LAKE OSWEGO, OR 97035-3377 21E07AC00109 21.E07AC00110 21E07AC00111 DISHNER ROBIN DOAN QUINN A &SYDNE CHRISTINE IRVING DEVELOPMENT CO 1'""73 CANDLEWOOD CT 15201 CANDLEWOOD CT 5530 SW WOODS CT L. OSWEGO, OR 97035-3377 LAKE OSWEGO, OR 97035-3377 PORTLAND, OR 97221-2232 t=tiyuettes faciles a peter ; Sens de Replica it la hachure(din de 1 vvwrw,avery.com t�>tilisez le gabarit AVERY®5160® ,I chargernent r4vkler le rei;ord Pop•upl.IC 1-800-GO-AVERY / 521 Use Avery''Template 51601E' A Feed Paper ---' expose Pop-up Edge'M A 21E07AC00300 21E07AC00301 21E07AC00401 TRIENT FREDERICK W&KAREN L DOYLE CASEY S LIU DAWNING CRAVENS 5130 SW CARMAN DR 15601 MANCHESTER DR r 1 SW CARMAN OR LAKE OSWEGO, OR 97035-3348 LAKE OSWEGO, OR 97035-3378 Li-...E OSWEGO, OR 97035-3348 21E07AC00402 21E07AC00403 21E07AC00404 POWELL JERRY W &JANICE E VANLEEUWEN JOHN E& CHRISTINE YANG RUOQUN &GUANG FAN 15585 MANCHESTER DR 4937 HARTFORD PL 4959 HARTFORD PL LAKE OSWEGO, OR 97035-3366 LAKE OSWEGO, OR 97035-3331 LAKE OSWEGO, OR 97035-3331 i 21E07AC00405 21E07AC00406 21E07AC00407 RODEN CHERRI D FENG JINGBIN &BETTY SALITA JAMES C TRUSTEE 4973 HARTFORD PL 4991 HARTFORD PL 5005 HARTFORD PL LAKE OSWEGO, OR 97035-3331 LAKE OSWEGO, OR 97035-3331 LAKE OSWEGO,OR 97035-3327 21E07AC00408 21E07AC00409 21E07AC00410 WAGNER JOHN F & MARY ANNE YANG XIN &CHENWEI LIN KAO BERTHA A& BRIAN L AVERY 5017 HARTFORD PL 5026 HARTFORD PL 5008 HARTFORD PL 1 LAKE OSWEGO, OR 97035-3327 LAKE OSWEGO, OR 97035-3327 ' LAKE OSWEGO, OR 97035-3327 21E07AC00411 21E07AC00412 21E07AC00413 FRANZ LOUIS A MILLER GERALD V HAUCK SARA R &TOM D 4994 HARTFORD PL 15542 MANCHESTER DR 15584 MANCHESTER DR LAKE OSWEGO, OR 97035-3353 LAKE OSWEGO,OR 97035-3363 LAKE OSWEGO, OR 97035-3363 2' "E'AC00414 21E07AC00416 21E07AC00800 S . „EY JEFFREY J JB&B CONSTRUCTION INC • LARSON RODERICK A& REBECCA D 15606 MANCHESTER DR PO BOX 1784 15368 SW WALUGA DR LAKE OSWEGO, OR 97035-3364 LAKE OSWEGO, OR 97Q35-0582 LAKE OSWEGO, OR 97035-3340 21E07A000503 21E07AD00504 21E07AD00505 VERMILLION CHARLES H TRUSTEE REED CINDY OBRIEN DAVID JAMES &TERESA 4603 HERITAGE LN 4625 HERITAGE LN 4647 HERITAGE IN LAKE OSWEGO, OR 97035-2565 LAKE OSWEGO, OR 97035-2565 LAKE OSWEGO, OR 97035-2565 21E07AD00506 21E07AD00507 21E07AD00508 WAHAB AMIN &KAAFIYA HUSSEY KRISTIN HARMON MARK R & CHERYL A 4669 HERITAGE IN 4691. HERITAGE LN SAILER LAKE OSWEGO, OR 97035-2565 LAKE OSWEGO, OR 97035-2565 4713 HERITAGE LN LAKE OSWEGO, OR 97035-2576 21E07AD00509 21E07AD00510 21E07AD00511 MADDOX JOHN W &CINDY S BLUHM JEFFREY M & LISBET A HENDERSON HARRY A 4735 HERITAGE LN 4757 HERITAGE LN 4779 HERITAGE LN LAKE OSWEGO, OR 97035-2576 LAKE OSWEGO, OR 97035-2576 LAKE OSWEGO, OR 97035-2576 21E07AD00512 21E07AD00513 21E07AD00514 1 SORRELL MICHAEL J TRUSTEE SAVAGE MARY DIANE TRUSTEE BENEDETTI RICHARD 0 TRUSTEE 4801 HERITAGE LN 4804 HERITAGE IN 15533 HERITAGE CT LA: .SWEGO, OR 97035-2577 LAKE OSWEGO, OR 97035-2577 LAKE OSWEGO, OR 97035-2513 tiquettes faciles a peler ; Sens s;epllez to hachure afin de ; wwvd.avery,coin I Jtilisez le gabarit AVERY°51600 I chargement reveler le rebord Pop-upw 1 1-800•GO-AVERY A 522 use Avery,' template 576U'' Feed Paper '-------J expose Pop-up EdgaTM �� °�v o7utm 21E07AD00515 21E07AD00516 21E07AD00517 RUEF MICHAEL R&SUSAN F SCHUMAN RICHARD &JILL KITTAMS BRIAN K &CATHERINE i< 4716 HERITAGE IN 4650 HERITAGE IN 4628 HERITAGE LN "E OSWEGO, OR 97035-2572 LAKE OSWEGO, OR 97035-2.540 LAKE OSWEGO, OR 97035-2540 21E07AD00518 21E07AD00519 21E07AD00520 HAMMERSTROM DAVID T& SUTTON HOLLY SMITH &JOHN A NELSON CLARK A& PATRICIA L KATHLEEN A 15511 HERITAGE CT 15555 HERITAGE CT 15467 HERITAGE CT LAKE OSWEGO,OR 97035-2513 LAKE OSWEGO, OR 97035-2513 LAKE OSWEGO, OR 97035-2508 21E07AD00521 21E07AD00600 21E07AD00800 PLATT ANDREA NICOLE TRUSTEE SALOS SOFIA RIOS ANDREW R &AMY BETH 15577 HERITAGE CT 4754 CARMAN DR 4756 CARMAN DR LAKE OSWEGO, OR 97035-2513 LAKE OSWEGO, OR 97035-2532 LAKE OSWEGO, OR 97035-2532 21E07AD01001 21E07AD01100 21E07AD01200 TOOPS KENNETH C&CHRISTINE M WEIBEL JOHN BENNETT LANNY R & BETH I 5000 SW CARMAN DR 5020 CARMAN DR MULVIHILL LAKE OSWEGO, OR 97035-3346 LAKE OSWEGO, OR 97035-3346 5037 PARKHILL ST LAKE OSWEGO, OR 97035-3321 21E07AD01300 21E07AD01400 21E07AD01500 I ALDRICH RIJTHE J TRUSTEE PERKINS THOMAS&ELIZABETH AETNA BROKERAGE 5015 PARKHILL ST 4993 PARKHILL ST 2936 SE TAYLOR ST LAKE OSWEGO, OR 97035-3321 LAKE OSWEGO, OR 97035-3319 PORTLAND, OR 97214-4033 7 17A001500 21E07AD01600 21E07AD01800 L... RENT RESIDENT EDWARDS EVE WATERBURY CURTIS&AMY 4973 PARKHILL ST 4945 PARKHILL ST 4933 PARKHILL ST LAKE OSWEGO,OR 97035-3319 LAKE OSWEGO, OR 97035-3319 LAKE OSWEGO, OR 97035-3319 21E07AD01900 21E07AD02000 21E07AD02000 KOENIG ANTHONY C SHIN r , IC;BEBECCA A CURRENT RESIDENT 4921 PARKHILL ST AR' Alf'iela # ' - 4911 PARKHILL ST LAKE OSWEGO, OR 97035-3319 APO AE, 09898 LAKE OSWEGO, OR 97035-3319 2 1E07AD02100 21E07AD02200 21E07AD02300 PANCOAST PATRICK M &JENNIFER NELSON DOUGLAS•K & ALICE F MOCK GERALD G TRUSTEE K 4916 SW PARKHILL 4920 PARKHILL ST 4904 PARKHILL ST LAKE OSWEGO, OR 97035-3320 LAKE OSWEGO, OR 97035-3320 • LAKE OSWEGO, OR 97035-3320 21E07AD02400 21E07A002500 21.E07AD02600 KO TAMARA&THOMAS T '<A F �,,�� q MALONEY MICHAEL 4932 PARKHILL ST 49 P, Rf4} LL ST 1584 PARRISH ST LAKE OSWEGO, OR 97035-3320 LAKE OSWEGO, OR 97035-3320 LAKE OSWEGO, OR 97034-6080 21E07A002700 21E07AD02801 GOODMAN WARREN REED SCHESSO GREG 50''`' PARKHILL ST 15570 WALUGA DR LA JSWEGO, OR 97035-3322 LAKE OSWEGO, OR 97035-3342 ttlquettces fades paler 1 A Ropolez Ala hachure afin de 1 www.avery.com Utilisez de abarit AVERY°5160® + Sens a r4veler le rebord Po -upMc + 1-800-GO-AVERY 9 charget p A 523 +ners II 524 + - , , \fit 4 y I,,, ` u II '4, 810,4 .f 14�• d 1 'S 1RI r h w, f t'. ++ , 1,4 ' ' rl i 1, 1 1, I r ` 1 , • • • • • • PUBLIC NOTICE THIS SITE HAY OE •SGg,IEGTiTOA ' CO}IA1TfONAUUSE pE#.If F0i1 y r+ COMSTRUCTIOH of A i .'�, . WATER RESERVOIR. F1'.' •4 1 r.1.• .ttRtNSµ4r,r'� �. d., • • o s I L,r '; n * , • • {. r ,:y •' f ~ • ; r Y. it 'S _., i - ti7-" • r+Jl 1. r� ry _7-'" . `R F•'c.•t ' ) '�ti � � �. r" �. i Li-,.b'•� (4 y. 1 k. { i .. i0! I ''CIS ° 14 r• Iy�_' (%•. c T? _f 4-FiS• {/ + '• !y •, • •••F�:•Li*.y • ••. i''E -• '� "v#,''' + o" }al•T drJ7y'ii' 4'n etiIP? 4Lv 1,.',• 1 - - '-' 1,,}, s..4.• •i .1 ` r!'R++M' _•Z .i { - ." 1 11• 1 •'rf.. 'w�d%n+�wi, . •�, •J •�f+ °'f�''� ,a• r , s {••rP } ,M1l• .. 1 warn .. �`'' .. •eR,r 7f. •e'•: _ , :..-. IY ' .. :J r .. ~ • .t.4.1. .. ,, a . p�P,Y,�', ' `rrrtW 11*rip.6$•r f r• ~' +y7�i�:i +" 1. {{•4 CPI ,4 . 1, _ A , l w.'• Ad 1 •' �7 a �� . -- • r I •xr Iv!•ii �{ • ✓ •.. 07,4?f+ S- ltitr ,,'�"�,,a '�,• H.. r fit...''.-r ,�'- r_ (, ,w r"0""",S• �ti 1,y 4..,of{:�l"+� t.�•mare,• e e ti P T '� ` ,n}r 1r 14�.5 'i K?).l) ,fy:r r','+ 'r y +y, er .k �' t4;.; • ,. --} ../A.", 71 P �' ••.5,� k+\,, '• +• _ '�',by ' .IrSj' )_ ° - .� ..s 1 Si40.4• •1 .? ,,��.._��..��§1 �.` '• :l%M r+l iwirti+�rtw ,r}.y.)ir"..,1„� !''a"�.1,Pi' • �1, =�"j-�r-E9y 1' r `+ i+ �.l C."..-�'1'f ' ,,t.• 1 .+,1:.. `[''1� R, ti �+P;�S: 'y.r, r•s' �� .r 5i S[`',u. r, 'F'y,'.r ' , '4<<1,l a TY.Oa:`r.<r+•- . 'L� s! 1' n s,,.�• '',;y}„ t4: _t''s /.a * I. • .':.4 r/p. r. I: r_ i(�ik�t,'., {. '- .a .,f ` .,,."'4 31.!, J N•�''- +`yam�{` ✓t ; ' Vr'�r + • • 'i rli'+ + .� 1•iyi.Z?u!" ( JP.Y •i°'i#}:;l;.\ ,r n; +. , r !•fJ! VY 1':ll,S� i M 1 .+y,j� ! ! 4 ,� 1' q{`J1/iN" .• •�fi 'r4! . 'Y. tw+ -g50,1 } 4 /rr !.. • 1 �il S" li ri[rSr� '+Il L '.h °,.jlrGlr7�J ¢M rlrld ;�+' � pt 7 y CLT" �, �r it ly KCITV.1 a •y I r, n f, "10 k.,. ++99 4'' lE„.•• 1 'j.Y pS r ii .Kr1 ••, : r3 . • :P' •.. c S • '\' ee--]� �L.... 4h;>, •S Lh Y •0` ,£r..:11-f�;y,•.' P aid ' 1 ' .4 14 'NF `t ,:: �•�` +�•vt+ ry ys•J ` .•ter' .lt' c . rr` ,„..t s w• N. y. ....1, i••-.,. • y; +}ti t i li �T � .�y�r.�y �y ��)(�',.Y).i,�•jjj('/�*y ¢ •7't t4 I-, ,.f.wJ•.�'{�1/�,,y.l2) . 525 I ' ' i . e-�..ci y r ,.: • r = eft +^ -r,'' +j�•. • • R •• ■ UBLIC NOTICE W yq . • THIS SITE MAY BE • r'.' •, 'r_,, SUBJECT TO A ' ''r.,i r,•,�.. • e.' �i:�,. f} CONDITIONAL USE `• . 1 t� `�,,t `r �•n� � ,�. CONSTRUCTION L7FA ' A; .s • s, ':•j ri r.�`1 • 7 .\ `g� ':' WATER RESERVOIR. : •• } r i ' •i �i 1� M.,n„OM(V11 u,t.•i.1 u(�.OJ}Rp[K.a .. c•, ...f ..° • 0."" 4.j i. ,,i1. T &W-14Y,DUNE 9 20F2 ,. '.a • ,' . /. ' . . `,.a !r k f„ 7:OQ TO 8:50 ASH. , •,� r ,��l'. WEST GNOBUILIING ,� • - r. .r} t"4 • 10.AMOtr LW,,.I•r 4 iw[C.A w 3 . • ') ' 1 4 '• roRAODINQIMLcni'ONHAl14NCONMA6r: �, • ♦ ,},+' ,' ' _ ' ' ,w. ...{' /• - .4'. [�f, Ci Cr KFNI hShVt!"y}1l1•/9`'} . r ' •; .•• . . . • , !. ` , . r ! ' $f{ .•. * t S.1. /- ,' 'tip , .1 ` y 526 1 S OL SWEGO __._.._J O R EGON Name of Applicant City of Lake Oswego Pre App# PA11-0034 Subject Property: Tax Lot (s) 21E07AD07900 Tax Map(s) Address or General Location: 4800 Carman Drive,Lake Oswego OR 9703E AFFIDAVIT OF POSTING NOTICE I,Jeffrey M. Selby,do swear or affirm that I represent the party initiating interest in a proposed water storage reservoir affecting the land located at 4800 Carman Drive;and that pursuant to LOC 49.36.705, did on the 18th day of May, 2012 personally posted the notice indicating a meeting would be held 1 regarding the proposed use of the property for a water storage reservoir, conditional use,design review, and sensitive lands application. The sign was posted at: (I) Intersection of Parkhill Street and Stone Avenue, (2)4800 Carman Drive . Dated this 1 _day of flAki ,2012 A.. 0_,1 Signa N Subscribed and sworn to,or affirmed,before me this,I ckl day of l4 1 ,2012, STATE OF OREGON r COUNTY OF CLACKAMAS i '.1114�� Notary Public for the State of Oregon 14,646A i9-(1 9-01 c( My Commission Expires `, � J OFFICIAL SEAL SUSAN JO SHW1 :i--) PtOTAFtY PUBLIC•OREGON ,,,,000MMISSION NO,A447641 MY COMMISSION EXPIRES MARCH 21,2014 527 N ____J g --------........ s., 0� f f Rogo y f r , . % i i / GALEWOOD STREET GALEWOOD 1p DRIVE I • �9 . 4101 GpEy� 11111. � \ , �ti 1\7 ,f l.0/ 1 I 4 \ \ 1` 06* 1 0°96 4111 714 , \ , ,`,t 1 1"or '4 „. mini i NR�FRG L4NFNMI �! Opp PL 0 HARVEY 1 (%j MIN 11111, 111, ,� t 1 1• , N ''11Mt A. g y di \ 4 FOP 0 S ' ,7X1 Mini Ma y �l�� III COLLINS :!urn 4,10,4,111ki. PARKHILL STREET VIP VP MI oIN 1ME yQ�. �'� �. �' 'iii Lake Oswego Tigard Water Partnership Waluga/Lake Forest NA Required Land Use Meeting Outline (Thursday,June 7,2012/7:00 to 8:30 p.m./West End Building) 6:30-7:00 p.m. Doors Open 7:00-7:10 Introduction - Welcome and invite participants to take seats(Jeff) - Review meeting purpose (Vaughn) - Review ground rules/reasons for meeting process (no requirement in LO to record audio or video—should we?) - Introduce design team(Vaughn) 6:40 7:10 Project Overview(does this include pipeline?) - Site layout/landscaping-10 min - Architecture-10 min - Construction/operations-10 min 7:10-8:25 Public Comment Period - Call names from sign-up list - Each person has 3-minutes(or less if we have many people sign up to speak) - Use visible timer - Write questions down, but don't answer them during the comment period. (Provide written answers later) 8:25 -8:30 Next Steps - Land use application schedule - Thank you for feedback - Adjourn meeting Tools and Materials Audio/visual recording equipment (Vaughn) Timer (Vaughn) Computer/projector (Jeff) PowerPoint (Jeff coordinate—slides from Design Team) Sign-up to speak sheets (Jeff) Meeting sign in sheets (Jeff) Feed back form (Jeff) Partnership Fact Sheet (Vanessa) Coffee/water/cookies (Vanessa) Easel with pad to write down questions (Vanessa) LO Tigard Water Partnership attendees:Joel, Dave,Jane,Jeff S.,Vaughn,Sean,Brad?, Ben, Eric D... 529 • \ \ \ \ \ \ \ \ • 53° 8/2/2012 Waluga Reservoir Applicadort WalugalLake Forest Neighborhood Associations „ Required Land Use Meeting June 7, 2012 2•.1.• • ,/ ri - , •••; • ,- -•-011 • - •si••• • dreg Atp, r ' • „ N 430,744.4„. • "O.., hd.10,7, 6,. • / 01171.- 414.1* ss. I " • 6, 1, 41110 •*.r.A., It • C404."/# • A .,rdo Lake Oswego 'Tigard Water Partnership Jr sharing'vote co»necring rondrumi ries Agenda 10 min Welcome and Introduction 30 min Project Overview 45 min Public Testimony 1 ,zeki IS t ,--1411PV 16y. A*re. 531 8/2/2012 Welcome Purpose . y., .1f111 , To collect input � � :, ,�, (. , t. � useful in developing Wiz. `t, l Lr� the conditional use4.1 + `Y x •ri , permit (CUP) ands,' 71r5, - • '' �` design review .1p. k 0 '. l T V.. ' application for , �' , , • construction of a i `- water reservoir and f,., , , ',`� '� �,_ ' associated pipeline, fs L ..;; T;csi.a.� :.�' i Proposed Waiuga Reservoir 2 location Meeting JR_.- + utree ents Lake Oswego Community Development Code (CDC) 50.77: ✓ identify potential issues or conflicts regarding a proposed application so that they may be addressed prior to filing ✓ Intended to result in a better application and to expedite and lessen the expense of the review process by avoiding needless delays, appeals, remands, or denials ✓ Take the reasonable concerns and recommendations of the neighborhood into consideration when preparing an �d \application 2 532 8/2/2012• Project Team. • y Il Dave Prock, Deputy Project Director, Lake Oswego Sean Goris, Project Manager, Black & Veatch • Ben Johnson, Landscape Architect, Greenworks • • Brad Moore, Project Manager, Kennedy Jenks Eric Day, Senior Planner, Lake Oswego • Jeff Selby, Information Coordinator, Lake OsWego • Vaughn Brown, Facilitator, JLA Public Involvement • • • ®,ubliC' .. a tirony Applicant must provide a record of verbal or written testimony. To provide written testimony; 1. Complete the form available at the check-in table. • 2. Include your name and address. • 3. Leave it in the comment box. To provide oral testimony: 1. Sign up to speak. 2, Come to table when your name is called. • 3. Give your name and address. 4.' Time limit is 3 minutes. 0 • 533 1 8/2/2012 .Ground Ruil -i . r: i Oral testimony will be recorded. / Maintain quiet while others are speaking. / Limit testimony to three minutes. / Constructive input is encouraged and welcomed. R �f! Q Lake Oswego Tigard Water Partnership { vuuerw•x O - 1 cuce�vum r s 5. 1 0,5 now 1 - . — )1 er -.12 - •4( ? • teas ,7 jF�.•. cam., •'a I$` N ,l`.i..,r. a t any •s;isri+ws t'' t ate. V ..;IV \v c w.hee t .---.1i cifY 0 . p' 4 534 1 8/2/2012 Finished Water Pipeline i 7`;r '.,it t ` r- / 1r r fit, i ,A,Av., `cry.6' 1.x ._ i A, 1' ,tipe • a� w•1 lsV q ry � R{�fj �"...,,..c,it..,..„. .. „ 511-40 .'%.f....''.' .2' ' ' "'' ''' 't t ...'iY I. .- 1 �• ys_� illoi • 4 +� C+ 4 t � trev. - '!'riffs.` ,14,t ."ii.A, V- ,.7 �? '41F, _t., •1,200 feet of 24-inch pipeline ., f ••h i•,,. ----1 rf .ti3ti i w. •Open cut construction � it 1 • 9 u., �, , •Route avoids tree Impacts •.'`;�rl'F�fy"T" y `" f'!rryt �_' •Typical 3 feet of cover over pipe t i. •Construction schedule: 1�a��,,, ,. 1 ; ti Nov.2013—Fob.2014 • - i "J• ,•,or ? ', •Contractorstaging area In parking lot ' = . e c *S•,,, e x •Contractorwill restore parking lot ;,1_4,•L`tif,car,•S�:+t'u ,,! •a+ ',a 5r., �..--.4 ., fa4loti'ring construction 0 I , Rese ifoi'. Site Development > 1 ,.,• 3r 1'4.' , .,' -.,, " `\a��\`�‘LcN1.,A-,-,Tt'----':'-'- ;,� :,cam .N"" ?mac_ ; tr*, I .r K h..a.-e• y,:r r` • 1 y....r•_. / r .;_. : , ..--z---- . N.sizi.z.,=-.>' t ' F41 .if 1, r' ;/� • ,-r. • t• • I I 1 5 5351 1 .1 i 8/2/2012 • Reservoir Site -Development 1 1` X�{a. I. l r r 21. Lift}Y: �; 'I' l ,+} , << 't' s, ! } _ . I:=-r 1 if ... . ,...,tt ,..) .,_.... ...04.1.d.:...,,,,-,,.r... J {�I. j'•(}� ' ,}� ...�. li_• 1 �iL7.9.�uawrr..w.�+co.nlc. . '/ ','r`;Ii 1iI 'I.!/f:�i ifc:• s,} 1 , ,.ti, . i.,IA, . ,-ion...•._ _ __ _ 1 bl' 1.Pit gjISAOti. .,,,....., ''')....A. . 0,.17.7---vr& ,, 1 ..: ..4.... ,_.... 1 • e Reservoir Site Development - ., . �SS _ �., '! ' a . kt` q ,T}.11 T e a- •�.Y i v•',. I i NW on.,.x at�dx �, �;:�` " r• i 6 536 I i ll 8/2/2012 . ; , • Aerial .,. '+fig ! '0 ;; t / 1 yr. •$ ' b. I • is"" �� I i FyVhi`. y0,+ t� } +l 't d ,, ;71 '. 7.4r,—, - i �,;off'•�5.1�.i4 • • + i -{ 14 l.. • '717.'1+. +•+ • • 1 r1{rA . Jj i f K •y f 7Y t 1,'... • e, 1 , , �i it:: N' ...E� { + I I • Sr, .,7 i,a.n'• u ! ,, I i ells. 1 i 1 i 1 Construction Limits +,` I I r / i it -Y � : ig • •4' 1iCtit {• IS4' -i.: f .LT04 .��7 1a' y k J! LL. 1 1+'A 1 r .�Y a. =1I , r •^ ,• } i ` ..mot. , u i ..: r .i, +' i1i, 14f4 5 °i.a . F. ��j 1F 1 t I 1,.,',,��'r" 'i it - - , . , 9• . VATSpr 71 1 {pi. msrMtnor j'. 1��4 '1�; n1 • • f. •r n'y r,„,,. .-•,....T„'.".'—'k7'..tr l'''rr :4',..,.s ..;;44\''' '..pti 0 ',,. .',...,1-":''...-L--,i•:,.'• --;- ••4',,/./..V„,`;;. 4 7 • 53 8/2/2012 ite Plan fi ij `' .o rb i,. = r ■ r 7' 1‘ 'M •v 1 ...` h -r R V l ,!'i i tor? J'i ., '.••1 ,+.' 1 1clifilliik„. 0 .r. 1 t Ve t,';I(Ir \ ••....... .. ' 0,,,, ,,,, ..,,,.., 4, ,, "1 l Visual Impacts • �/ -, n....'k.a4nA r 8 538 • 8/2/2012 , 1 South Visual Impacts • yid✓_} _ _.VIEW , ' FA" ,.4YI - • . Ivud . . '; • WMF IUfJII .•..• ..may a_, . lffOF! • S �t - r L r .�. ,!C )...4r'.. x 1 FRWOJtO MOM 0 0 West Visual Impacts �,_�r�, .. - ,i ti MA_t. VIEW 2 I "., 1` r , % i ' .,.!1 1":3.1 .,�i.�` hi wex _- +.-a.,.. ward _ c•kc.� K_ -�� gi ', j 4 I, s ell l kr , e.f�j ��3' • ` ;'r, "%' tr • 4 4: 41 -I,•. f td Jam#- L� 4 ' ..Y-� racvalsm Y.a�+c. r/datm 9 539 1 . • • 8/2/2012 - . Upland Forest Trees _ . . t•••Lats:•,;.t.r.;411,..... ' ' i ;•nr 1,.. , ...",":::...I - ; - ..•":;4;1.;•-‘;••-.e•..., . 1 1 '" r."- . ;'N'P• tt.. '. !*.;.-,,,WP.'''-'•••• . . , , ., .,,. .•.1;1 p 4, "'•- 'i---',47.... - ..i.1• •••••• , '-'••+•:1-,,',"%-, --,;-, ..1---. ..,',. ' -1.. ;;;L•„.1 ..;„ . •,..,..4,,,,,,t,.•J.,t,;...,:q...,N. .,.„14.,, .., J. . . r ,,,...,,..,,,,,,•-•"7,71:',... 4 ..• 1.!.1' '! ..... p'p.• ' ' .- . .44.7-.-'1... ',--" •-• PP.-4:3 Vr...4!..V.PP•i,,l'• . ..•..,....,„ /',..r 1"*.t...e•'.'1,`'.-!:S.,1.4. 1 Y ! 1P;'' ', P " .--r",,.t 1,........y••:-..•%..i.,:.. ...-, •0' '^-••1: .',1.;)' ; :! I,• 1 1.J. . I -',,, ,•-->..121:,. , • ..,,,,„•s•,.., ._• ,I'- :,I; :il Ili•.:.'1,' ,•. ''..''"• ,,:' r-'1;dak•1/46••,15-'1•',';;;.•••• - . ; .• .-''''';i:', : „ - ••..''.k'V.z. '• --_. '•; ; t ifl .1 •',•.•r.',"„'"-. -„t,..-.4,.;•‘-z);:.• ,fr, -...: II.i ,'•.I ,.! . 11.14' -• ' •• I. ' •;=. ..-:"' ' "":•".;"-;1• ,..:' •'..."'„.;•• it ., ;1 ,....,1, !. .: / ( •,5. .• •-•••..• -..... ., ,,..,.._“).•,.,,L. ,•„-,,:•••,....,11,-1-cP15•1..1.1.t.,••• Ap•...,n.4•4-P.41 LP,. r.-....ei Pp.4,01.VW••••-•41 pl.f0.4•;KP 44,4$ .. ...... ,..-. 41.•,..1,••., ,.. . 7-- ''''' 7..../irlfr . • , ,...-:1 . • i . .1..7.,•..0'';'T) .......,4 •”. ••••• .. -tv 4; ,*,•:•.••'; . . ,, ,,...c -";•,;,'-'•,:‘.14 ' ;,5'. •• •••71,0‘,.,- • '-44 •, " . , 4 p_k••,.,....4.44,A., ••!; Pi.0,1:,,4'1,,,,ri,,,,,,-• .. • •••r.',74,A.r.-1,..:.„.,,....,4, - .. • .5-,:e', ' - '''''' ie:-•-...--":zi....• ,•„,p ,:ii!- -•.:',...Vi.v.i.f!,:i ,,•.1....,:.•, • • ,,,,. • , ...-6, a.rr-jk.4-i'e; '. f-V,311:' . - •;;,.'' ."1-,Or ' ''':4911 '`,'' '.7•1•-•••1 '. . jeki, PX-4';•>.•:4,0 • ••:"4..-14'••- • 4,...S•••-fil,;',6,-K•:.."-.•.:".#.04-... . T..",,.'z.1:•fi..-4`,1 •••st;,.."'a'. • / •••,••..;•:-.1.,;p,,..s,„_:...;- •N'•vs•-.'..••.....i.: •• -'m•4e0 • .r:,-'2.,•••••:': K•, I, . • • 4'...5.". - '• t'. 'r.444.P.:„;./'''`......VN: ...,.' ••••:!.. .'.•••Kr. 4470, dik4es,11P,!:tAPP7,/ .' ' • ....eiPP6t4;4•2N&"'''',:'..;•-A!';'4V.F.if: !4( ,F..-,-41 ,Ati--•..!'•''': . •••• 1,,,' .',4/401.,,,,:i, -..r"K•,,,---'....i. -'1'‘.••I'.-.; 'AL tr4,..,••;foro .6...454SC 4441; P • • -..`;"(p.,4...-...,0,‹4..':',',,-,_ •pat..44•• P -• •.P., • . ....••. -. . P 1tr,irr1r.ric•it.n.111.1 4...1'1.,‘,11 -- .:•,...11.1,.1,1 Co...)..A:e1..1.1. ••1•••!;•1•;••rr•.;”.. .16•1.04.i,,,!...,.11. ,.I • • , , Upland Forest Understory .., .• -.,,,,„ r • -... 7';4.....r.1.1.1!"6;i:'..,4'1,':::.111-01..t.t...-.6...4;' •r!,.•;Li f'r rr...).fj Y 1,''',„'!...".4:;•„,"?..i.!1'..!;.:•-1,1: ,?,.!..:•'1...• ',4.01•:2 ‘ -717:._,..'7':*4;..7:4,t,i4.1'01,,„,Y41•1.''.i'l) .".'L;fte,b,i1).1>-,1%.'1,.•4'-;i:fr,\Vi..;i4) ,74i''---'•:'.':'''.1.- ,-zp,A • -41 - '.•,-..- , • 'P:44•V.:. .-,s;,-:;.'.-.,..,.p :;.<:'.N•ft'l••••••%.:....,.;.-i:,'I., -.A:7,, .....4g,-.z-;:"..:‘,•..,0..1., : 1 • %;,,•4'•'''' 4',47.%‘,r,.,.'4 '. .94,t) t-•A 11.:•,f1Tt.;-,7r,.%".:;',',1;•p-. ):-.7.•!,0:4-1".:-:'‘ •'•'•,•-••••• 4 rie,-.,...:1-'1.....;':.#;•17117';;;;;!V 7.:r4.,',1114° '.1,...:-"•'.-:1';'5,1,;1e,j:11,4.1;)-,,i'.i••••1;•(!-:C14 .—•‘......', V i''.'.11.•• ' .','...,-.; t,..-,<1 *-.7 nit :;:-.0 r4P,?1-. - . •ip,(., -i', I,••-'.5..',14 't:I.te. ":,_ . .,i•,• •,•,j-:•,t" ..)-.4 C: ' .4.4t.'U.1!4:''eLr'i :r.lte' 1 ••,..Y. -' - til' .'.,•1 ,o,A', 4.A -;,-,,y,....‘ ,').'!A Are';',.- " 1".'• .N7. Ph!!..14•7;:ii."4"!• :••••4'•,,,,,. .•.aL-4•41.r •,..... •".".:''4 ••,:",' • : 1,..:';', '''.• q''.. ••• -,...4-d?'''-`„ ••- , . - "7.1.-r•-....pyr. . .-..74....-..,,.,/; ,r;"10 .,-,!,.: 0. •J• '•, , . 5_ -•..', t,I 0 .1,..1•••-•• „.-..-•-•,.,.._. -..t...1./;,‘".A. '''' '''' •• . • , , ; ., • ',••••.,• r : q 1 i.•''t 4- '.41..7:-. '':•1."- • . "1.11.,.....-.17 ''''••• ": '''. 4'-' ."•.',yr 1,q11;•••• • . 1' , ''. •, 1?•I — .... _. •. ; ,,.•....,....1',....1,.. .. •.,,..•,.,.• . ";., • i ..iq• ,.; :'4.4 • OPP — ' ,r,I.'1I1,1*-1/.,NN.t. ,..1-.414V1•1,.•41.,Prif•N•Ilf,14,4, ..P•:•....41,,P40114.1•ii..11.1d.-oltiry 4 ! , . . . - . . I 4 . •''' ... 1 .• • , 44 4 gt! .k--.':-'.:•' '..,i;•,,z-.•,. .:i') ' i- . -," , ,..,•',1' 'F".•;•,•'-'•• '••" • -.0,,.1,- %-' v. •' #r....'-'••••L :• ••91/,'• :• ••';" - '''',.4';X,- '''',' •,-, '' , .1.,•• •,.. ,••••,:75•111 •..- ez, •'.:••. 'r,; •"`I'"4:•';,.Al-%: .'' •.`.``-'1,•1":-:'',"'...'•'.'•„1" 1'',,''''-i.-•.'`"' . 0:. • -. , ;,,,,-E. ';''''''):•;:7'..''X''i, .1' - ,. ..•':/'..'__P_'.;):),',),i'.1... ''.,4:: .„''..;;.•,';' •' :% „.• o,-;;-. • „:.: ':' ,/1', '; ..• :111'.7 11 Nit .,''4:-.,• ". L. '';'''''1; ... ...' '41....;.L.Zt. ..4,., V ;;.,. - • ..''''i•`"' ....., ..i,.- ,I..f:iy.;: • . .,... , + ,,,;"..v•..• c.),J.- ,.'• . .. '7/.'.',' ' r .' 1"::.1k- . • .' 1. : "...4„ .F) ', .?..lsrtil.1 - .'.r. 4' .,,-N . ,. . .L.- :..:.' ' ..,, i :•/_-1 -'• ' N '..,' II ',;') A..!,•''i .''',7.L-ir:,,M,'''): i?•. . ' .• • . "''-'1'.; % 2,,,..s•• ' , ., • . 4 :), •''',", I _ •- •. • , , .,,.•,,,,,. • d'L .11 •• 16• 1 • .• • , I ;•.:„.,/•,,,,,..0.,,p,•,,,,,,,.....-•.If•” 6:44,1,U1,i, IN..11,,41111,.411111 I .-...:A1.1,0P kid,/',..1•WW1 I]p4p,.! tIni:74:7..,•, . ry,,0••••,,,,•,.... _4 ira . . 10 540 . . • 8/2/2012 I' = 1 Waluga Good Neighbor Plan Summary1 11 • Five GNP meetings from . - I September 2011 to May 2012 COUGARS j • Representatives from Waluga • & Lake Forest NAs and Parkhill i }' St./Carman Dr. neighbors • • Good faith effort and ;i, • ' . • ll commitment by all parties to '�""� j�•�'" ti ensure the Partnership facilities .`3'. ' r ��; ✓!. will be compatible with their �c \� + • surroundings and benefit the Waiuga Reservoir GNP Meetingon 9129111 neighborhood • Waluga Project Timeline • • E I ACTIVITY DATE* • Ibesigo Early 2012—Summer 2013 i Submit Land Use Application Late Summer 2012 • j ORC PublicHearing. Fall 2012 Construction&Restoration Period Summer 2014—Summer 2015 ' f � Dates are tentative and subject to change 11 • i 54 8/2/2012 Public Testimony Oral testimony will be recorded. ✓ Maintain quiet while others are speaking. ✓ Limit testimony to three minutes. ✓ Constructive input is encouraged and welcomed. ® I I 12 542 CITY OF LAKE OSWEGO LAKE OSWEGO LAKE OSWEGO TIGARD WATER PARTNERSHIP Omittn1t10 1910.2010 I Ill 4101 Kruse Way 1 PO Box 369 Lake Oswego,OR 97034 503-635-0270 www.ci.oswego.or.us June 20, 2012 Re: Public Meeting Minutes from June 7,2012 Dear Neighborhood Chair/Representative: The City of fake Oswego held a required public meeting on June 7,2012 to discuss The Lake Oswego Tigard Water Partnership's Conditional Use, Design Review, and Sensitive Lands Applications for a proposed water storage reservoir just north of Waluga Park.The City gathered testimony to identify and address potential issues regarding the Waluga Reservoir proposal. it is our hope that taking neighborhood concerns into consideration will result in a better application. Attached you will find the meeting minutes,written public testimony, and a copy of the invitation letter that was mailed to property owners within 300 feet of the proposed site for your review. As per the City's Code Section.50.77.025,each neighborhood association chair or representative thereof shall submit a list of the respective neighborhood's concerns, if any,to the City and the applicant within 14 days following the mailing of the minutes. Please forward your concerns, if any,to: Jessica Numanoglu,Senior Planner Eric Day,Senior Planner City of Lake Oswego Lake Oswego Tigard Water Partnership PO Box 369 PO Box 369 Lake Oswego, OR 97034 Lake Oswego,OR 97034 Email:jnurnanoglu@cl.oswego.or.us Email:eday@ci.oswego.or.us Please feel free to call me at 503,697.6502 for additional information. Sincerely, 7aSWEoa �� � — � ,,tom i 0 15 Eric Day,Senior Planner, Lake Oswego Tigard Water Partnership • Z 9AnRtO�� - I jack Hoffman,Mayor a Jeff Gudman,Councilor a Donna Jordan,Councilor Mike Kehoe,Councilor u Sally Moncrieff,,Councilor n Mary Olson,Councilor o Bill Tierney,Councilor 543 Ui U.S. Postal Service,;., CERTIFIED MAIL,. RECEIPT I (Domestic Mail Only;No Insurance Coverage Provided) i For delivery intormat`.or visit our viobsite at wtiv`x_usps-corm x 3 Postage $ ' ] Canard Fee ' a @ 14 3' 40.001 3 Return Receipt , 3 (, • ,esteeted Delivery Fee i - Total Pe 'r.-.._ d! . 7 'Serer° MaryTurnock 5 orPOSa y sasotpi Lake Forest Neighborhood Association "- Mary Turnock 4745 Oakridge Rd. -- Lake Forest Neighborhood Association Lake Oswego,OR 97035 4745 Oakridge Rd. Lake Oswego,OR 97035 SENDER:COMPLETE THIS SECTION COMPLET5 THIS SECTION ON DELIVERY :Y ® Complete items 1,2,and 3.Also complete A item 4 if Restricted Delivery is desired. [ t' . a Print your name and address on The reverse X b'Mr lessee i so that we can return-the card to youAddresse. t'Yi laM of 33erN is Attach this card to the back of the mallpieoe, B.Rem' n�t-Ifedr eery r `, . - ' or on the front if space permits. f�} i([ f - D. address from m-1? El Yes :Ll_Yes 1. Article Addressed to: 1]tdo if YES,enter deanery address below: 0[Id E Nary Turnock . L-ke Forest Neighborhood Association 445 Oakridge Rd. . 'a: Service Type I Lake Oswego,OR 97035 El Certified Mali Q Express Mail i - [ _ -_--_ - I ❑Registered ❑Rehrm Receipt forMerc se fdr+E�toh ❑kiawed Mail Cl C.O.D. i . - 4. Restricted Delivery?bra Fee) ❑Yes =1=T.Yes - 2. Artfelo Number —--- -- --- (Transferfmm servIce Iaben - 7 i10 9 3 410 EMU 2 .0837 8343! j l 'S Form 3811,February 2004 Domestic Return Receipt - 102595.02-M-15411 1 l 4540 , U.S. Postal ServiceT:. • CERTIFIED MAIL-r, RECEIPT 1 (Domestic Mail Only;No insurance Coverage Provided) • 9 i For delivery information visit our website at www.usp -coma, - ka% i u G LI , Oa..- j tr., PastagPostage. S ; � Coryf;ad Fee O® 3 Ii Return Receipt Fee • (lidorsement Required) t> 3 Restricted Delivery Fee . (atonement Required) 0� • ✓• Total Postage • 1 Cheryl Uchida - Sore To 3 Waluga Neighborhood Association _ ' • erii7a.RFr.-1}oo orFOBar No. 15190 Quarry Rd_ ci O 23'� Lake Oswego,OR 97035 - - 1 PS Form 3800.Au•ust 2006 Sec Reverse for Instructions ' - PS Form 3630.August 2036 ON ON DELIVERY �- , COMPLI=Te THIS SECTf Qt t - ! ' f . p Addles `. Cheryl Uchida I5 SECTION p.S;q l -,rr__�` r[very ---. . ---_-- --.�—_. R-COIV1PLEr Tt� �mgleta ,�.r. F c Dataot4e•.�s-- - Waluga Neighborhood Association i`2,artd 3' desired. by{pr'nted rne1 �t'21 -FL1vERY - 15190 Quarry Rd. nook)it Sees �{[[c{ed d atddtess Or`the 'I ' twin tam cries o Lake Oswego,OR 97035 fyt your n 0 est tie card to Y apiece, - ' "1 d[rieten ?' •that 1t r 'ale of the rn p,Is deTnretY deli,erY addsessbela+r -Adcires$es.•_ .. ;tack th+ SpacO p 1f E. ni , G'Rziaai•D[?.Iyety r on ire - to: ' v•elaPddreu Y� - •• 0 S? ❑Yes A 3. � �� edssg411 tattd (IL. eNN'U`'iii:in SOCl2210h 4i'i eceintfiflC M1. 00�A5 `I ifaluga�e`gh>Rah 0RCeg t pcop- II Yes 1,"51`�0 QuarNPill-a OSWegQ'OR 9 5 Q II aed Deliver/7Fee) 703 Lake :16 ?2I2 - -----.7/301 54V3 - Oa _—r the aise ,.oTi.O.a. `, 2_ Rattle taurnbe 1030-0 pomestic Ftetum R r- ----r-._r,s cfzil rDeli/eV fee) 0 Yes - o erftom _- .�_.--- --- - ; 3a11 Febru `1�Q� 70fl9 34,10J 0002 0837 721t2 ps Form _',"zca labs 1.PS Form 3811 February2004• DomesfIc Ritual Receipt t isao I (Ti ! to U o) U.S. Postal ServiceTm . CERTIFIED MALL, RECEIPT 3 (Domestic Mail Only;No Insurance Coverage Provided) _ I;•For delivery information visit our.website atyww.usps.come -, r a ! � Q3` . Posmso ';� ''tis�1 ii Cerblied Fea . Return Receipt Fee t Poroa ti 2 (E orsemertRequlroo 1 •,_ 7 Restricted Delivery Fee 11 3 (Endorsement Required) �-1 1 - Total Post 1 Jeff Novak Sen57o. • Waluga Neighborhood Association 1 or t , 4322 Collins Way - G�swe Lake Oswego, OR 97035 — Jeff Novak PS Form 3800.Ausurt 2006 Sec Revc sc for Instructions Waluga Neighborhood Association _____-- - -- _ 4322 Collins Way i -- . __ - ---. - - Lake Oswego,OR 97035 t N D ER:COMPLETE THIS SECTION COMPLETE THIS SECTION ON DELIVERY 7LI v1=RY Complete items 1,2,and 3_Also complete A. '_ item 4 if Restricted Delivery is desired. Q Agent I I Print your name and address on the reverse- ❑Addressee t o,Aser Addl ssee i so that we can return the card to you. R ( ' C-Date cif Delivery i,jO.'Rzte df DeT y� I Attach this card to the back of the mailpiece, 1�1]r✓ v (G-Z( !1� i or on the front if space permitts. D. Es delivery address diferent from roam 1? ©Yes . ArticJe Addressed to: if YES.enter delivery address below: ❑No 1 I Je Novak I . WJ l luga Neighborhood Association 4322 Collins Way 3. Service Type Lake Oswego,OR 97035 •Q Certified Mail 0 Evr s Mai ©Registered 0 Return Receipt for Merchandise 0 Insured Mail 0 C.O.D. =ipt fir R+ dlso I 4. Restricted Delivey1(Etiza Fes) ©Yes I Article NumberCI Yes ti Crranstar from service Ian 7009 31410 0002 0837 7205 • 5 Form 3811,February 2004 Domestic Return Receipt tazsss oz to tsso l • • • 10 -R9-15Co 1 1 — i Waluga Meetings: July 29, 2010 Waluga Reservoir Neighborhood Meeting Topic: expansion of the Waluga Reservoir Sept. 8, 2011 Parkhill Street Sept. 29; 2011 Waluga Neighborhood O Topic:Waluga Reservoir Good Neighbor Plan Kickoff i I Oct. 27, 2011 Lake Forest Neighborhood Association Topic: Project update Dec. 14, 2011 Waluga GNP Jan. 11, 2012 Waluga GNP i Feb. 29, 2012 Waluga GNP May 23, 2012 Waluga GNP June 7, 2012 Waluga Reservoir required public meeting 547 \ \ \ • , \, \ \ . \ • I \ , I\ ' \ ' 1 \ \ \ • \ \ \ • ‘ . . ' \. \ \ \ \ \ \ \ . \ \ \ I‘ I, \ . . \ I I I \ I, I \ '•I, \ \ , ‘I \ 1\ \ \ \ k \ * . , \ ' \ '‘ \ \ 548 21E07AD02300 21E07AD02400 21E07AD02500 MOCK GERALD G TRUSTEE KO TAMARA&THOMAS T KAUFMAN WALLACE 4920 PARKHILL ST 4932 PARKHILL ST 4952 PARKHILL ST OSWEGO, OR 97035-3320 LAKE OSWEGO,OR 97035-3320 LAKE OSWEGO,OR 97035-3320 21E0744002600 21E07AD02700 21E07AA00300 MALONEY MICHAEL GOODMAN WARREN REED CHERNOBELSKY MARK N 1584 PARRISH ST 5022 PARKHILL ST ' 6530 SW 89TH PL LAKE OSWEGO,OR 97034-6080 LAKE OSWEGO, OR 97035-3322 TIGARD,OR 97223-7108 21E07AC00401 21E07AC00402 21E07AC00403 MERRILL DEWAYNE 0&CATHY J POWELL JERRY W&JANICE E VANLEEUWEN JOHN E&CHRISTINE 15601 MANCHESTER DR 15585 MANCHESTER DR 4937 HARTFORD PL LAKE OSWEGO, OR 97035-3378 LAKE OSWEGO,OR 97035-3366 LAKE OSWEGO, OR 97035-3331 21E07AC00404 21E07AC00405 21E07AC00406 YANG RUOQUN &GUANO FAN RODEN CHERRI D FENG JINGBIN &BETTY 4959 HARTFORD PL 4973 HARTFORD PL 4991 HARTFORD PL LAKE OSWEGO, OR 97035-3331 LAKE OSWEGO,OR 97035-3331 LAKE OSWEGO, OR 97035-3331 21E07AC00407 21E07AC00408 21E07AC00409 SALITA JAMES C&A A WAGNER JOHN F&MARY ANNE YANG XIN&CHENWEI LIN 5005 HARTFORD PL 5017 HARTFORD PL 5026 HARTFORD PL LAKE OSWEGO,OR 97035-3327 LAKE OSWEGO,OR 97035-3327 LAKE OSWEGO, OR 97035-3327 7AC00410 21E07AC00411 21E07AC00412 KAO BERTHA A & BRIAN L AVERY FRANZ LOUIS A MILLER GERALD V 5008 HARTFORD PL 4994 HARTFORD PL 15542 MANCHESTER DR LAKE OSWEGO, OR 97035-3327 LAKE OSWEGO, OR 97035-3353 LAKE OSWEGO,OR 97035-3363 21E07AC00413 21E07AC00414 21E07AC00416 HAUCK SARA R&TOM D STACEYJEFFREYJ JB&B CONSTRUCTION INC 1 15584 MANCHESTER DR 15606 MANCHESTER DR PO BOX 1784 LAKE OSWEGO,OR 97035-3363 LAKE OSWEGO,OR 97035-3364 LAKE OSWEGO,OR 97035-0582 21E07,4000100 21E07AD00501 21E07AD00502 BERGER RONALD& CATHERINE B SIEVERT BRADLEY E&SARAH K ZHANG YUFEI 7088 CREST RD 4559 HERITAGE LN 4581 HERITAGE LN RANCHO PALOS VRD,CA 90275-4550 LAKE OSWEGO,OR 97035-2517 LAKE OSWEGO, OR 97035-2517 21E07AD00503 21E07AD00504 21E07AD00505 VERMILLION CHARLES H TRUSTEE REED CINDY OBRIEN DAVID JAMES&TERESA 4603 HERITAGE LN 4625 HERITAGE LN 4647 HERITAGE LN LAKE OSWEGO, OR 97035-2565 LAKE OSWEGO, OR 97035-2565 LAKE OSWEGO, OR 97035-2565 21E07AD00506 21E07A000507 21E07AD00508 WAHAB AMIN& KAAFIYA HUSSEY KRISTIN HARMON MARK R&CHERYL A SAILER 4 HERITAGE IN 4691 HERITAGE LN 4713 HERITAGE IN LANs OSWEGO, OR 97035-2565 LAKE OSWEGO,OR 97035-2565 LAKE OSWEGO, OR 97035-2576 549 21E07AD00509 21E07AD00510 21E07A000511 , MADDOX JOHN W&CINDY S BLUHM JEFFREY M&LISBET A HENDERSON HARRY A 4735 HERITAGE LN 4757 HERITAGE LN 4779 HERITAGE LN I OSWEGO,OR 97035-2576 LAKE OSWEGO,OR 97035-2576 LAKE OSWEGO, OR 97035-2576 21E07AD00512 21E07AD00513 21E07AD00514 SORRELL MICHAEL J TRUSTEE SAVAGE MARY DIANE TRUSTEE BENEDETTI RICHARD D TRUSTEE 4801 HERITAGE LN 4804 HERITAGE LN 15533 HERITAGE CT LAKE OSWEGO,OR 97035-2577 LAKE OSWEGO,OR 97035-2577 LAKE OSWEGO, OR 97035-2513 21E07AD00515 21E07AD00516 21E07AD00517 RUEF MICHAEL R&SUSAN F SCHUMAN RICHARD&JILL KITTAMS BRIAN K&CATHERINE K 4716 HERITAGE LN 4650 HERITAGE IN 4628 HERITAGE LN LAKE OSWEGO, OR 97035-2572 LAKE OSWEGO, OR 97035-2540 LAKE OSWEGO,OR 97035-2540 21E07AD00518 , 21E07AD00519 21E07AD00520 HAMMERSTROM DAVID& KATHLEEN SUTTON HOLLY SMITH &JOHN A NELSON CLARK A&PATRICIA L 15467 HERITAGE CT 15511 HERITAGE CT 15555 HERITAGE CT ' LAKE OSWEGO, OR 97035-2508 LAKE OSWEGO,OR 97035-2513 LAKE OSWEGO,OR 97035-2513 21E07AD00521 21E07AD00522 21E07A000523 PLATT ANDREA NICOLE TRUSTEE VESSEL?MICHELLE B DORADO ANTHONYJ&CINDY L 15577 HERITAGE CT 15562 HERITAGE CT 15540 HERITAGE CT LAKE OSWEGO,OR 97035-2513 LAKE OSWEGO,OR 97035-2513 LAKE OSWEGO,OR 97035-2513 2 'AD00524 21E07A000525 21E07AD00527 CHILCOTE ANN C TRUSTEE WAHBA IHAB&CECELIA KOO-WAHBA JONES PIERRE A&SUELLEN S 15518 HERITAGE CT 2394 NW HUMMINGBIRD DR 15474 HERITAGE CT ' LAKE OSWEGO, OR 97035-2513 CORVALLIS, OR 97330-2278 LAKE OSWEGO, OR 97035-2507 21E07AD00600 21E07AD00800 21E07AD01001 SALOS SOFIA RIOS ANDREW R&AMY BETH TOOPS KENNETH C&CHRISTINE M 4754 CARMAN DR 4756 CARMAN DR 5000 SW CARMAN DR LAKE OSWEGO, OR 97035-2532 LAKE OSWEGO, OR 97035-2532 LAKE OSWEGO,OR 97035-3346 i 21E07AD01100 21E07AD01300 21E07AD01400 WEIBEL JOHN ALDRICH RUTHE J TRUSTEE PERKINS THOMAS&ELIZABETH 5020 CARMAN DR 5015 PARKHILL ST 4993 PARKHILL ST LAKE OSWEGO,OR 97035-3346 LAKE OSWEGO,OR 97035-3321 LAKE OSWEGO,OR 97035-3319 21E07AD01500 21E07AD01600 21E07AD01800 AETNA BROKERAGE EDWARDS EVE WATERBURY CURTIS&AMY 2936 SE TAYLOR ST 4945 PARKHILL ST 4933 PARKHILL ST PORTLAND,OR 97214-4033 LAKE OSWEGO,OR 97035-3319 LAKE OSWEGO, OR 97035-3319 21E07AD01900 21E07AD02000 21E07AD02100 KOENIG ANTHONY C SHIENLE DUKE C&REBECCA A PANCOAST PATRICK M &JENNIFER K 4r °ARKHILL ST ARGENT QA#13 4904 PARKHILL ST LA,,,OSWEGO,OR 97035-3319 APO AE,09898 LAKE OSWEGO, OR 97035-3320 550 21E07AD02200 21E07AD02000 21E07AD01500 NELSON DOUGLAS K&ALICE F CURRENT RESIDENT CURRENT RESIDENT 4916 SW PARKHILL 4911 PARKHILL ST 4973 PARKHILL ST •E OSWEGO,OR 97035-3320 LAKE OSWEGO,OR 97035-3319 LAKE OSWEGO,OR 97035-3319 21E07AD00525 21E07AD00100 21E07AA00300 CURRENT RESIDENT CURRENT RESIDENT CURRENT RESIDENT 15480 HERITAGE CT 4537 HERITAGE IN 4710 CARMAN DR LAKE OSWEGO,OR 97035-2507 LAKE OSWEGO,OR 97035-2458 LAKE OSWEGO,OR 97035-2532 ALEX McINTYRE JACK HOFFMAN JEFF GUDMAN, CITY MANAGER MAYOR CITY COUNCILOR CITY OF LAKE OSWEGO CITY OF LAKE OSWEGO CITY OF LAKE OSWEGO DONNA JORDAN MIKE KEHOE SALLY MONCRIEFF CITY COUNCILOR CITY COUNCILOR CITY COUNCILOR CITY OF LAKE OSWEGO CITY OF LAKE OSWEGO CITY OF LAKE OSWEGO MARY OLSON BILL TIERNEY CRAIG DIRKSEN CITY COUNCILOR CITY COUNCILOR MAYOR CITY OF LAKE 05W EGO CITY OF LAKE OSWEGO CITY OF TIGARD 13125 SW HALL BLVD TIGARD,OR 97223 TCI-IEN BUEHNER NICK WILSON MARLAND HENDERSON CuLJNCIL PRESIDENT CITY COUNCILOR CITY COUNCILOR CITY OF TIGARD CITY OF TIGARD CITY OF TIGARD 13125 SW HALL BLVD 13125 SW HALL BLVD 13125 SW HALL BLVD TIGARD, OR 97223 TIGARD,OR 97223 TIGARD,OR 97223 MARC WOODARD LIZ NEWTON CHRIS TOOPS CITY COUNCILOR INTERIM CITY MANAGER LAKE GROVE WATER DISTRICT CITY OF TIGARD CITY OF TIGARD 16552 BOONES FERRY ROAD 13125 SW HALL BLVD 13125 SW HALL BLVD LAKE OSWEGO, OR 97035 TIGARD,OR 97223 TIGARD,OR 97223 MARY TURNOCK CAROLYN KREBS LAURA FORREST CO-CHAIR CO-CHAIR CO-SECRETARY LAKE FOREST NEIGHBORHOOD ASSOC. LAKE FOREST NEIGHBORHOOD ASSOC. LAKE FOREST NEIGHBORHOOD ASSOC. 4745 OAKRIDGE RD 16925 DENNEY CT 16161 WALUGA DR LAKE OSWEGO, OR 97035 LAKE OSWEGO, OR 97035 LAKE OSWEGO, OR 97035 SHARON MOREHART KENT MATHIOT ERIC MARKMAN CO-SECRETARY TREASURER LAKE FOREST NEIGHBORHOOD ASSOC. LAKE FOREST NEIGHBORHOOD ASSOC. LAKE FOREST NEIGHBORHOOD ASSOC, 5035 FIRWOOD RD 15947 WALUGA DR 5362 CARMAN DR LAKE OSWEGO, OR 97035 LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 JEFF NOVAK CHERYL UCHIDA BRUCE GOLDSON CHAIR SECRETARY PAST CHAIR ' UGA NEIGHBORHOOD ASSOC. WALUGA NEIGHBORHOOD ASSOC. WALUGA NEIGHBORHOOD ASSOC. 4 ..1 COLLINS WAY 15190 QUARRY RD 4260 COUNTRY WOODS CT LAKE OSWEGO,OR 97034 LAKE OSWEGO, OR 97035 LAKE OSWEGO, OR 97035 551 RON ANDERSON SANDY DESMOND JIM NEWCOMER TREASURER/FOUNDATION CO-SECRETARY BOARD MEMBER WALUGA NEIGHBORHOOD ASSOC. WALUGA NEIGHBORHOOD ASSOC, WALUGA NEIGHBORHOOD ASSOC. QUARRY RD,#I.23 4123 HARVEY WAY 4261 COLLINS WAY OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 KATE O'REILLY GENE PARK ADELL JENIKE BOARD MEMBER BOARD MEMBER MEMBER AT LARGE WALUGA NEIGHBORHOOD ASSOC. WALUGA NEIGHBORHOOD ASSOC. WALUGA NEIGHBORHOOD ASSOC. 4340 BEASLEY WAY 15951 QUARRY RD 16055 BOONES FERRY RD LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 JIM LEDLBETTER GEORGE REAY GEORGE BERN MEMBER AT LARGE MEMBER AT LARGE 16885 MAPLE CIRCLE WALUGA NEIGHBORHOOD ASSOC. WALUGA NEIGHBORHOOD ASSOC. LAKE OSWEGO, OR 97035 15213 QUARRY RD 4123 HARVEY WAY LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 • JIM CASTANEDA JOHN DENGEL BENN& LAURIE MAHAR 4390 DOUGLAS WAY 4946 PARKHILL ST 5165 SW CARMAN DR LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 LAKE OSWEGO, OR 97035 CHUCK&SARAH McDERMED GREG McMURRAY BLANKA NYULT 4911 PARKHILL ST 4746 OAKRIDGE RD 4105 DOUGLAS WAY LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 F 'Y ROSENBLATT& CHRIS & KEN TOOPS EMMA LEE&JOHN H.WEIBLE PH tiICIA GOODMAN 5000 SW CARMAN DR. 5020 SW CARMAN DR 5022 PARKHILL ST LAKE OSWEGO, OR 97035 LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 ANNE WILSON MIKE& DARCY SMITH 15370 QUARRY 4694 CARMAN DR LAKE OSWEGO,OR 97035 LAKE OSWEGO,OR 97035 552 Lake Oswego ' Tigard ( 144 Water Partnership sharing water connecting communities Waluga Good Neighbor Plan PREPARED BY : JLA Public Involvement September 2012 553 Purpose The Lake Oswego Tigard Water Partnership (Partnership) and Waluga reservoir/pipeline i neighbors (including the Waluga and Lake Forest • f, Neighborhood Associations) have collaborated p' welrorn .,r_ 1.14;` to develop a Good Neighbor Plan (GNP) that will , IttWa1 a/.7 guide facility and site design, construction and w rood�� Eqn 1976 operation for the Partnership's new Waluga Reservoir 2 (WR2) and associated piping within the Waluga area. The plan reflects a good faith ,• effort and commitment by all parties to ensure the Partnership facilities will be compatible with their surroundings and benefit the neighborhood. The Partnership's goal is to complete these facilities on schedule to serve the communities' safe and reliable drinking water needs cost-effectively,for years to come. The shared goals of the Partnership and the neighbors are to see that the facilities are built and operated with minimal impact on the neighborhood's quality of life and to ensure that timely, on-going communications about the project occur at key project benchmarks to solicit input into project decisions and provide information updates throughout construction of the facilities. All parties acknowledge this GNP reflects a current understanding of future conditions and plans. As circumstances change, the Partnership and neighborhood fully expect to update the GNP with any necessary changes to achieve the parties' mutual goal —providing a reliable and adequate supply of safe drinking water while minimizing neighborhood impacts. Need for the Project Lake Oswego's water system is near capacity, and key facilities need expansion and upgrades including increased storage on the city-owned Waluga site and the associated connecting pipelines.The existing Waluga reservoir tank stores approximately 4.0 million gallons (MG). Partnership water supply design criteria indicate that an additional 3.5 MG of storage capacity is needed at the Waluga site to meet system needs, maintain reliable water supply to Lake Oswego, improve water pressures in the Waluga pressure zone, and enable water supply to Tigard. 2 554 WR2 will provide adequate capacity for emergencies and fire suppression and improved pressure in this part of the Lake Oswego water system. It also supplies additional water when peak demand exceeds immediate supply and treatment capacity, and enables increased water supply to Tigard. Water for Tigard will not be stored at Waluga beyond the basic volumes needed to enable transfer of water between the two systems. Planning Process This GNP process began with preliminary meetings in July and September of 2010. Interested neighbors were COUGARS asked to share their concerns, issues and needs n regarding the proposed new WR2. That input was carried over into the development of a GNP document - that included five meetings with neighbors over an eight - . `_ - month period from September 2011 to May 2012. The I process included one-on-one meetings during October 2011 with residents bordering Stone Avenue —the alignment for a new pipeline—and backyard visits to properties bordering the City's reservoir property. In addition, a pre-application meeting was held on July 14, 2011. Findings from these,meetings were incorporated into the GNP. Once the GNP is finalized with interested neighbors, it will be included with Lake Oswego's land use application for the WR2 and pipeline facilities. The WR2 site is zoned R-7.5. Under Lake Oswego's Zoning Code the storage reservoir is defined as "Utility, major" which is allowed in the current zoning as a conditional use.To some extent final site design, buffering, pathway location, etc., will be determined through Lake Oswego's conditional use permitting process. The GNP will be provided to the WR2 and pipeline design teams and later, the selected contractor(s). Portions of the agreement will be made requirements of the construction contract. . . 3 555 Key Issues to Address Throughout the meeting and discussion process with neighbors a number of questions and concerns emerged surrounding the design and construction of the new WR2 and associated connecting pipeline. The Partnership understands these issues and is committed to addressing them to ensure this project is sensitive to neighborhood concerns about safety, aesthetics and site layout. WR2 Safety • Earthquake risk causing WR2 failure/water release • Flood control in case of WR2 failure Aesthetics • Color the structure to help it blend into the surroundings • Visibility from homes and yards • Loss of trees due to WR2 installation • Preservation of significant trees for forest protection and visual barrier purposes • Restore vegetation for environmental and visual barrier purposes Construction • Truck and equipment impacts on Parkhill traffic causing safety issues for pedestrians and bicyclists-especially children . • Truck and equipment traffic limiting access to homes .y ' • Truck and equipment idling-air pollution ic *s • Work schedule impacting residential living conditions • r� .i. • Providing off-site parking for construction workers r--, • Maintaining emergency vehicle access to residences during construction - • - • Locating WR2 staging areas on the city site { ,_ • Locating pipeline staging areas to minimize visual, ,. safety and traffic impacts to residential areas • Minimizing disruption to Waluga Park, parking areas and the ballfield users • Need for incentives for efficient construction and accelerated completion • Construction noise and mess • Blasting damage to homes, interference with daily life and need for reassurance of safety 4 556 Operations and Maintenance • Increased need to access site • Neglected future maintenance creating neighborhood nuisance • Illicit activity at site Neighborhood Amenities • Improved pedestrian and bicycle connections through the neighborhood • Pathway proposed on WR2 site and along Carman Drive � `' • N.: as in Lake Forest Neighborhood Plan `;? ' . 4 } • Pathway from Parkhill Street to Waluga Park for local ;, P.` . ' `'. - access to school and park .01 • Concerns about pathway issues such as lighting, surface, • y alignment, safety, vandalism, and fencing GNP Commitments WR2 Site Design WR2 will be designed to serve the needs of the Partnership water supply system while incorporating features and construction practices that address safety and aesthetic issues described above to the greatest feasible extent. • Locate WR2 as far from homes as is • Replant trees and shrubs to the same technically and economically feasible. standard as would apply to a private • Camouflage the WR2 structure itself development. using colored concrete. Consult with • Follow-up with neighbors on mitigation neighbors on pigment coloration. plans both on-site and off-site. • Install landscape screening around the • Begin landscape plantings early(prior perimeter of WR2. to construction) in those areas clear of • Protect trees to the extent possible. the construction site in order to • Mitigate for all trees 5" or greater in establish trees and screening as soon 1 diameter at breast height (dbh) as possible. removed for facility construction in • Use largest nursery stock trees onsite locations to maximize screening available that assure long-term viability effect for area homes. and maximize early screening. Eight to • Protect trees to the extent possible. ten feet trees have been planted for other Lake Oswego public projects. 5 557 • Design and construct WR2 to the and treat runoff. current standards for earthquake • install a gate on Carman Road access safety for critical facilities. entrance to restrict vehicle access to • Install water quality facilities to control only authorized vehicles. • Reservoir Vent(Access Ladder Not 5ttowid Existing Vegetation Not Impacted • • Proposed Meng z _ r ) . /44 /7vtrr..v��Or1I1'>ttp th„rw,ir 3 333.25' \ te6,5' Proposed Grade Note-Due to the variable nature of providing integral color in concrete,there will be color variations of the overall Section/Elevation A Existing Grade wale,"., -a° appearance of the reservoir. Schematic showing visual impacts of the reservoir Pipeline Design The finished water pipeline from Lower Boones Ferry Road through Waluga Park connecting the new Waluga Reservoir will be aligned to minimize neighborhood impacts. • Install the pipeline in an alignment • Work with Parks Department to that protects existing trees and the minimize pipeline impacts in Waluga berm to maximum extent possible in Park. order to provide continued • Work with School District, Lake screening of WR1. Grove School and residents to • Mitigate for all trees 5" or greater in coordinate alignment and diameter at breast height (dbh) construction timing of Douglas Way removed in onsite locations to pipeline segment. maintain screening effect for area • Install pipeline near Lake Grove homes. Elementary during non-school • Protect trees (public and private) to period. the extent possible, • Design pipeline to be compatible • Avoid Heritage trees. with the Boones Ferry Road • Replace the berm and vegetation to Refinement Plan. re-establish the current level of screening of the existing tank. 6 558 WR2 and Pipeline Construction Construction contracts will include requirements that define actions aimed at addressing the construction and traffic management issues outlined above. • Ensure safe pedestrian, bicycle and vehicle traffic during construction in public rights-of- way. • Maintain pedestrian, bicycle and emergency vehicle access to area homes. _ - • Secure work areas at all times to protect residents from > accidents and injury. • Provide off-site parking for construction workers. 47,1/4 r • Use visible identification badges for construction • ( ; workers. + • Require contractor to provide for the safety of the441,1 • construction site, including fire safety. " v•'t • Restore pavement to pre-construction conditions. • Establish and enforce daily construction (including noise-producing activity) work hours (7:00 a.m. to 6:00 p.m. Mon-Fri; 8:00 a.m. to 6:00 p.m. on Saturdays; no work on Sundays or major holidays without prior approval of the City of Lake Oswego and notification of affected neighbors via City's project email list). • Prohibit use of jake brakes. • Encourage use of best management practices for low sulfur diesel and minimizing idling time. • Follow Resource Conservation Protection Area standards for tree protection by placing minimum 6' tall protective fencing around the construction zone at the RCPA boundary which is the dripline/edge of continuous canopy. • Install tree protection fencing to protect the impact-free dripline during construction. • Replace trees to the same standard as City uses for other land use developments. • Complete a construction management plan will take into account GNP preferences. It will include a: 1. Pollution control mitigation plan • 2. Erosion control plan 3. Traffic control plan • Complete a pre-construction survey of area homes if blasting is necessary. • Institute a blasting notification system (include Heritage). • Use liquidated damages provision and lump sum contract as early construction completion incentives. 7 559 • Maintain a project hotline for reporting citizen concerns during construction. Keep an updated construction schedule online. Operation and Maintenance Ongoing operations and maintenance procedures will be conducted according to the following procedures. • Access WR2 from Carman Drive for all operations and maintenance activities. • Investigate and consider innovative ways to control illicit activities at the site. • Schedule a City Security Officer to conduct Neighborhood Watch training session with site neighbors. • Request police patrol of the area due to the creation of a more convenient access from Carman to Parkhill. • Prohibit storage or overnight parking at the site. Neighborhood Amenities (see Illustrative Site Plan on page 10) The Partnership goal is to be a good neighbor.The Partnership wants to offset the impacts of having these facilities located in a residential setting. Neighbors have expressed their desire to see the following items be included in the construction package for WR2 and the pipeline. • Improve quality of vegetative cover species on facility site by removing invasive species and replacing them with natives in mitigation zones. Invasives will also be removed in the construction zone. • Maintain open space character by not allowing residential development on the city- owned property. On-going communications Neighborhood input does not end with the creation of the GNP. At key benchmarks in the design phase the project team will schedule update meetings with neighbors and the Lake Forest and Waluga Neighborhood Associations to get feedback on design features. The Lake Oswego permit process also invites community input. Notice of those meetings and public hearings will be sent via mail/email, posted on the website and noticed in the Lake Oswego Review. During construction the schedule will be maintained on the project website. Notice of construction start-up and special operations will be provided via email and/or door hangers. The most timely and effective means of communication will be used to keep neighbors informed of construction activity and progress. 8 560 II Contact information For more information about the Partnership, Good Neighbor Plan implementation, or to get your questions answered: Jeff Selby, Citizen Information Coordinator Lake Oswego -Tigard Water Partnership 503.697.6502 jselby@ci.oswego.or.us '. Project Hotline-503.697.6502 it 9 561 • Hfi s roiiiv Safe Pion • • 0 4.411 flit P.OI IMAk'f ` .c- } �, L s>' i- d -' 1, t, a� ' 13001C , :4 fi' ` �-, , ? LIMIT O=LANDSCAPE — Yr ;;/• �►} -�` ti' RESTORATION • ti . "- r y'� • Exis-n lG WR I ! DETENTION PONDS---- `r • .i J v J. i . r it; .." ' • • MAINTENANCE ACCESS :} I 1 p t f' Albri• � J 5 [inn r Eicvaron A ,- I r fir 1t,,.+ ' , ` • - - ~ I IS AP . '� ` _ — .- ,`may �t r 'r I .. . __ - • • 10 562 Mkt %tA) CITY COUNCIL SPECIAL MEETING MINUTES February 22, 2011 Mayor Jack Hoffman called the special City Council meeting to order at 6:00 p.m. on February 22, 2011, in the City Council Chambers, 380 A Avenue. Present: Mayor Hoffman, Councilors Gudman, Kehoe, Olson, Tierney and Moncrieff. Councilor Jordan participated via conference call. Staff Present: Alex McIntyre, City Manager; David Powell, City Attorney; Jane McGarvin, Deputy City Recorder; Joel Komarek, Jane Heisler, Communications Director; Brant Williams, Economic & Capital Development Director. 3. STUDY SESSION 3.1 Foothills Planning Update Brant Williams, Economic &Capital Development Director, stated that a Foothills project update would be presented and regular updates would then be made to Council now that the project was in the planning stages. He noted that they are six months into a 20-month contract. He introduced Matt Brown and Dike Dame from Williams/Dame &White, who would share the details of the project to date. Matt Brown, Development Manager, Williams/Dame &White, introduced the technical team, noting their areas of expertise: Ken Vigal, Vigal and Agrimis regarding floodplain, mitigation, assessments, habitat; Alan Snook, DKS Associates regarding transportation; Bruce Brown and Katherine Schultz, GBD Architects regarding architectural and urban design; Mike Zilas, Walker Macy regarding architectural and urban design; and Tim Kraft, Otak regarding infrastructure, utilities and engineering. Mr. Brown, using PowerPoint, reviewed a Council vision from the onset of the process, and the importance of connecting the downtown with the riverfront. Foothills would provide Lake Oswego with a truly public waterfront. Connections were important. A streetcar connection linking Foothills with downtown Portland could be a critically important part. The project presented an opportunity for a special and unique neighborhood, which would promote walkability and activity at the street level. A broad mix of uses with housing, retail, office and open space would help support the downtown environment, while capitalizing on assets such as Tyron Creek, the waterfront, and the topography of the district. A sustainable approach would be important throughout the planning, design, construction and operations of the project. He noted the demographic trends that have emerged from the City's own Comprehensive Plan process and what that means for Foothills. By the year 2035, population increases would require 3,400 to 4,700 new housing units. Lake Oswego continued to be attractive to working singles, young families, baby boomers; those interested in similar housing products with urban centers and nearby walking amenities. Twenty-five years from now a large segment of the current population would be over 65 years of age. Many of these people would want to remain in their community and downsize or move into another type of housing, which presented an opportunity to provide senior- oriented housing. Another key trend was declining school enrollment, which was likely to continue. The report concluded that Lake Oswego should explore policies that would support development relative to where this demand would be, for growth and for the type of people who would be attracted to Lake Oswego. Redevelopment of areas like Foothills would then become a critical part in optimizing land resources and enhancing property values, with a return on public infrastructure in place today as well as future infrastructure investments that the City would make. The jobs/housing connection was critical. Lake Oswego has been known as a bedroom community, but that has changed over the years. Job corridors from Kruse Way and downtown Portland were City Council Special Meeting Minutes February 22, 2011 EXHIBIT F-17 LU 12-0044 563 l (*Vs slowly moving towards Lake Oswego, an example being the proposed development on the Schnitzer campus on Portland's South Waterfront, which would create a significant number of job resources over the next 20 years. Strengthening those connections would be a critical part of the future success of the downtown, Foothills and eastern side of Lake Oswego. Mr. Brown concluded that the demographic trends supported the Council's vision for Foothills. The housing mix in Foothills should appeal to those seeing Lake Oswego as an attractive place to live. Quality pedestrian environment and transit would be critical as would the riverfront, community amenities, and access to those amenities. Foothills redevelopment would create an opportunity to accommodate growth in a responsible way without negative impacts to the existing neighborhoods. Mr. Brown noted Council's adopted vision planning principles (Attachment 1) and referred to comments submitted by the Citizen's Advisory Group. Language was removed about'sustainability not being vital development principles' which they felt were too prescriptive. Rather than tying the development to one performance rating, such as LEED rating, the Advisory Group wanted the Foothills development to be performance driven, and highly sustainable. Additionally, they added a principle to strengthen the importance of transportation access and connection being critical to this district. He confirmed for Councilor Olson that the changes made on Item F regarding height, density and economically viable development were similar to the prescriptive sustainability principle, noting that the concept plan should determine the appropriate level of height and density. Councilor Olson also asked about the change of the word "will"to"may" in reference to requiring increased density. Mr. Brown agreed with the use of"will" as the project would require increased heights and densities; however, the Advisory Committee did not want to prescribe a height and density increase for all areas. The term "may" provides more flexibility than "will." Heights, for example, may be increased in some areas, but not in others considering the grade changes. Councilor Gudman noted that Item L, Transportation Access and Linkages on Highway 43 would have a significant impact on the access and egress in the Foothills area depending on who owns Highway 43. Mr. Brown explained that no assumptions were made about the ownership of Highway 43. Their efforts are predicated that ODOT would continue to own the highway; therefore, ODOT's regulations and standards for access and capacity would have to be followed. If that changes in the future, the approach would need to be changed. In the end, it did not matter who owned the highway, but who would pay to address transportation issues, like the need for access and adequate capacity. Councilor Gudman added dollars could have a significant impact and if the City owned the highway, they pay; if ODOT owned it, ODOT would pay. Mr. Williams clarified that ODOT would look to the City for any improvements to Highway 43 resulting from development and the City would work with the development team to determine how to fund those improvements. ODOT would go through the same processes as the City when working on such developments. Mr. Brown explained for Councilor Kehoe that the beneficial partnerships mentioned in Item H included both Foothills, the private sector and partnerships outside the City. Most importantly, coming to a resolution on transportation access would require a solid partnership with ODOT. Councilor Kehoe inquired about the word authenticity on Item G. Mr. Brown noted that although it was tough to define, he believed authenticity referred to ensuring that Foothills was an authentic part of Lake Oswego, its values, design, aesthetics, etc., which was subjective. Mr. Williams cited Lakeview Village as a good example of a high quality design and buildings that fit in with the City's character. Mayor Hoffman offered the Lake Grove Design District as another example to ensure the commercial area is authentic for Lake Grove. Ken Vigil, Water Resource Engineer, Vigil and Agrimus, presented the preliminary floodplain analysis via PowerPoint. The analysis was done to verify that the project would meet all federal, local, Metro, and Title 3 floodplain regulations and that development was feasible in the Foothills area. Floodplains could have been a fatal flaw for the project. Development placed within the 100- year Federal Emergency Management Agency (FEMA) floodplain could create a high rise in water surface elevation that would affect properties outside of Lake Oswego, on the other side of the Willamette River, and other areas. Since 40 percent of the Foothills District and almost all of the industrial area lies within the 100-year FEMA floodplain, the team analyzed what might happen to the water surface elevation of Willamette River during a large flood,event if fill were placed for development. Most of the flood capacity in the Willamette River is carried in the main channel of the river. Using the HEC River Analysis System (HEC-RAS), they found very little change to the water surface City Council Special Meeting Minutes Page 2 of 14 February 22, 2011 564 elevation or water velocity when placing development in the Foothills area. The findings indicated there would not be a floodplain issue to stop the process; however, federal, local, and even the City's ordinances require an equal volume of cut to fill in the floodplain. Most development scenarios would result in 40,000 to 50,000 cubic yards of fill in the floodplain, so cut and excavation of land areas near the Willamette River would be required to increase the capacity. The initial modeling was based on preliminary topographical data, so the next steps involved using more detailed data to rerun the computer model and then work with the design team to develop concepts and alternatives that would not cause a rise in water surface elevation. Additionally, preliminary estimates of fill for the industrial district within the Foothills District did not include roadways or specific buildings, but were general estimates. Now that the FEMA requirements were considered, the next step would be to look at the City's ordinances and other focal ordinances, such as Metro's Title 3, in more detail to ensure the development would meet all floodplain requirements of all regulatory agencies. Mr. Brown clarified that the 50,000 cubic yards of material was the amount of volume that would be displaced over time, not hauled into the Foothills District. For example, the streets and buildings would be brought up to a certain elevation but the underdeveloped paths would remain at existing levels. He emphasized there was a difference between the volume being displaced and what actually would be added as construction begins. Mr. Vigil confirmed for Councilor Moncrieff that the amount cut required would only be the amount of volume filled above the regulatory elevation. Mr. Brown explained to Councilor Kehoe that the analysis was used to help determine how the development would be phased within the floodplain. For example, two dikes could be added as a phasing approach to cut off the area to remove it from the floodplain. Although 50,000 cubic yards of fill had not been placed there, that equivalent volume of water had been displaced and was part of the analysis. The development would be built to the appropriate level over time. Not all the fill would have to be placed at once; a phasing strategy would enable development to proceed. Mr. Vigil noted that City Code presented challenges related to using dikes, but that ordinance might be something to review and discuss later. He confirmed that the testing was preliminary and the team had not created any development scenarios yet. Mitigation would be needed to meet the floodplain requirements. More information about the stages of the plan would be presented in the next few months. This feasibility analysis was to determine whether the federal regulations, essentially for rise, could still be met if the industrial area were developed in the Foothills district. Since the river's flood carrying capacity lies in the main channel and not in the overbank area, the analysis concluded that development in Foothills was possible without causing too much rise in water surface elevation, The next step would be to create the development alternatives to determine how many yards of fill would be required. Dike Dame, President, Williams/Dame &White, noted a key concept in starting the framework plan was to avoid getting too far into the project only to discover something they should have figured out ahead of time, which was the main reason for the analyses done by Mr. Vigil and his team, With these results, the team could confidently move forward to continue working to resolve some of the problems. Mr. Vigil indicated to Councilor Olson that no decision had been made regarding the actual site of the cutting. It would be somewhere in the Willamette River floodplain, as close as possible to where the fill would be added, because that storage volume was protecting downstream properties. One excavation option could be to cut near the mouth of Tryon Creek. The City had done some excavation in that area recently along with the Habitat Improvement Project and quite a bit of material was removed. Mr. Vigil clarified for Councilor Olson that the Comprehensive Plan Update Committee's [CAC] statement regarding land being suitable unless it was within the 100- year floodplain was a general statement. Filling in the 100-year floodplain would be a challenge, and the feasibility of building on the site would need to be decided. Results of the first analysis determined that building in Foothills was possible without causing a significant rise in the water surface elevation. He confirmed the LCDC housing rule was more of a general guideline. Mr. Brown agreed, adding LCDC used that guideline to calculate the buildable lands inventory within a jurisdiction. Typically, areas within the floodplain were not included in that inventory unless removed from the floodplain during a Comprehensive Plan update. Councilor Tierney verified with Mr. Brown that the 40,000 to 50,000 cubic yards of fill would be a maximum. The established minimum floor elevation for the development would be two feet above City Council Special Meeting Minutes Page 3 of 14 February 22, 2011 565 the 1996 flood elevation; City regulations required a one-foot minimum. Depending on how much material is displaced, more fill could be added up to 40,000 to 50,000 cubic yards. Mr. Vigil explained to Mayor Hoffman that it was unclear if credit was available for the cut at Foothills Park, but it may be able to be used. He was uncertain about the volume of that cut. Mr. Vigil clarified for Councilor Gudman that the 100-year flood event was the regulatory standard, not the 500-year event, which would reveal much more significant changes in the water surface elevation analysis than projected with the 100-year event. He described what changes might be seen and confirmed a different outcome would result. Councilor Gudman noted potential new regulations with regard to climate change making the 500-year event the new 100-year event. Mr. Vigil offered to provide documentation from the model showing the differences between a 100- and 500-year event. Councilor Gudman deferred to the collective judgment of the Council about acquiring further information. Mr. Vigil confirmed for Councilor Kehoe that the regulatory standard of the 100-year event would be used for construction. Mr. Brown reminded that the finished floor elevations would be set higher than the FEMA 100-year floodplain standard. Mr. Vigil added it was uncertain how City staff would interpret details of the Code. The flood management area of several communities was the 100-year elevation, the federal threshold, yet Lake Oswego uses the 1996 water surface elevation plus a foot. The team was proposing the 1996 elevation plus 2.3 feet. Both thresholds would be considered before moving forward. Mr. Brown stated that with regard to development in the floodplain, the new floor elevation was at a higher standard than FEMA plus a foot so they were trying to be conservative in how new development might relate to flood events. Mr. Vigil noted that flood insurance would be an important topic in future discussions. Currently, it was uncertain whether FEMA would insure some floodplain areas within the District. Although the feasibility analysis revealed they could move forward with the project, there were more hurdles to overcome with regard to the cut and fill balancing and flood insurance considerations for future developers. Tim Kraft, Project Manager, Otak, reviewed the infrastructure and utilities in the Foothills area via PowerPoint, noting certain deficiencies and issues that would need to be addressed. Continuing the feed to the Tryon Creek WWTP was critical. The team should consider placing several above ground utility lines, particularly in the northern industrial areas underground. He noted two buildings located across from one another on Foothills Drive that comprise a Portland General Electric (PGE) substation, but has two different property owners. One building in particular may prove to be an obstacle given the proposed street reconfigurations of the development. Councilor Tierney stated that similar to Portland's sewage treatment plant, a lot was tied in to the substation; location is critical and moving the substations would be expensive. Mr. Brown noted the design team was trying to identify issues that they would be contending with; no answers were necessarily available at this point. For example, the substation was located in a central area of the District that would be a critical juncture for potentially important transportation connections, so it was something to watch. He believed Mr. Kraft has had discussions with PGE to understand what might be entailed with relocating and consolidating the substations. Mr. Kraft continued with his presentation, noting that redevelopment and increased density might require upsizing pipes in the water system to allow for more residents and buildings. That system currently works well, so no major improvements were yet planned. Several issues exist with the sanitary sewer system. He noted several major interceptor lines feeding into the Tryon Creek Treatment Plant. One particular area was undersized and known to cause backups in the system, so the City of Lake Oswego has identified the need for upgrades there. In addition, consideration should be given about whether or not to move the section of elevated pipes going into the treatment plant underground. Another consideration was the locations of major pipes if the streets were reconfigured; a dedicated utility corridor would be needed to provide easy access. Additionally, the Willamette and Foothills lift stations that pump into the Lake Oswego interceptor might need to be moved depending on proposed redevelopment. One problem with the storm sewer system was getting storm water out of the area when the river was high. Other affected areas include the First Edition and Evergreen neighborhoods, which have major outfalls that come through the Foothills neighborhood. When river water levels are high, river water wants to come in through the storm pipes. The City has installed one-way valves that push water out of the area, but do not let any water back in and pump stations push storm water out against the river system. As redevelopment begins and elevations change, operation of the storm water system would need to City Council Special Meeting Minutes Page 4 of 14 February 22, 2011 566 be reconsidered. Increasing density would increase the amount of storm water, thus increasing the level of protection that would be needed in the area as well. Mr. Brown assured Councilor Olson that the undersized pipe segment shown beneath the sewer system undersized pipe was coincidental. Because the 24-inch pipe could not get water out fast enough, water often backs up into the intersections of State Street and A Avenue; First Street and B Street also flood occasionally. Increasing the size of the pipe would help that problem. He noted that increasing the reservoir capacity had not been discussed yet. Mayor Hoffman asked if consideration had been given to using the storm sewer system as an energy source because of the drop. Mr. Kraft answered no, but it was on their list. The storm system was hit and miss and good head generation was required. The issue would be deciding how to collect the storm water for consistent energy generation. Many water systems install turbines for energy generation. Mr. Brown added they were also looking at using the wastewater treatment plant as a potential energy source; opportunities exist within the utilities and the District that the team was considering. Mr. Brown explained to Councilor Olson that the team was coordinating work with the City of Portland on their facilities plan update for the wastewater treatment plant. Mr.Williams added that City Staff was sitting at the table with the City of Portland on the Tryon Creek Master Plan update and were reviewing proposals for consultant selection. The process would bring long-term improvements to Tryon Creek and Staff wanted to ensure that Lake Oswego's needs were considered, not only for the community and ratepayers, but also for any plans resulting from this process. Alan Snook, Senior Transportation Planner, DKS Associates, presented the transportation analysis for the Foothills District via PowerPoint, reviewing the data collected to inform the decision process with key comments as noted. The existing conditions analysis went beyond the District boundaries and included 14 study area intersections. The analysis focused on vehicle, bicycle, and pedestrian traffic namely on State Street and A, B, and D Avenues. State Street is an ODOT facility while all other downtown streets were City streets. Intersection counts were done for both the AM and PM peak hours. An hourly profile was obtained over a 24-hour period for a few locations. He described how and where traffic moved along Highway 43 and State Street and beyond during both the AM and PM peak hour. Pedestrians and bicyclists facilities were inventoried for all the study area intersections. The downtown and the area to the south were generally well serviced by sidewalks, though one gap existed on the north side of C Avenue. Counts showed 440 pedestrians in the entire study area in the AM and PM peak periods combined with 70% of the pedestrian activity on State Street, First Street and Second Street, and A Avenue and B Avenue. Bike use was much less than pedestrian use; 30 bicycles were shown in the AM and PM periods. This count data was taken in May. Highway 43 presented a barrier to pedestrians and bicycles crossing east and west. Four TriMet transit routes come into the area with most transit activity in the downtown transit core; 30% of the stops were on State Street with the other 70% being in various parts of downtown. About 1,380 on/off patrons were counted in the spring census. He reviewed the motor vehicle and freight operations in the area, noting the 24-hour traffic count data. The major arterials are A Avenue and State Street, which have been classified by ODOT as a State District highway. B Avenue is identified as a minor arterial, and McVey Avenue as a major collector road. Lake Oswego uses level of service (LOS) to define traffic operations with a threshold of LOS D. He noted service levels for various streets in the Foothills area. ODOT measures traffic by using volume to capacity (VC) ratio. The standard for a facility in the Foothills area is 0.99 or 99% of the capacity of the intersection was being used. This standard was being met. The worst intersection, A Avenue and First Street, had a VC ratio of 0.97 in the PM peak hours. Other intersections to the north were generally below 0.8 VC ratio. The worst intersection for queuing in the area was at the State Street and Avenue A intersection. Heavy northbound queuing occurs in the morning with heavy southbound queuing in the afternoon. Eastbound queuing occurs in the morning on A Street at First Street with a bit in the afternoon as well. Queuing is considered problematic when it extends beyond the next signalized intersection. Speed limits are being violated in both the 25 mph and 35 mph zones. Around 85% of the vehicles were traveling at or below the posted limit; other drivers were exceeding the limit by five to ten mph City Council Special Meeting Minutes Page 5 of 14 February 22, 2011 567 at three locations studied. No intersections exceeded the threshold for collision rates; in fact, Highway 43 was well below the State average for collisions on similar facilities. Slower speeds as well as the congestion in the area attributed to lower collision rates. The parking analysis revealed that parking downtown had not changed much since the prior 2010 parking study which showed 50% of the on-street parking and 60% of the off-street parking were being used during peak hours downtown. Parking becomes problematic when reaching at or above the 85% threshold of occupancy. This threshold was occasionally met at the north end between 2:00 p.m. to 3:00 p.m. in an off-street lot and in two, on-street parking areas at the south end. Next steps included examining the access and connectivity to the District, existing and proposed zoning, and preparing a future forecasting analysis to determine how the facilities would operate in the future. From the data, the team concluded that a definite pinch point existed at A Avenue and First Street. Though not fatal at this point, with a .97 VC ratio during the PM peak hour that intersection would not allow many additional trips to come through the area. Mr. Brown explained that a challenge in Foothills would be to deliver more connectivity in order to have a better transportation system. The team knew State Street and A Avenue was a challenge. Only one public north/south route existed for the area south of A Avenue, so all the traffic has to be on State Street. Foothills could provide another way for people to circulate in and around the area, which could help address some of the capacity issues. The prior Transportation Growth Management (TGM) planning process for this area demonstrated the need for a northern portal for the Foothills District. Another street parallel to State Street would provide some relief, and not having traffic from new development in Foothills come back through that part of State Street would make sense. These ideas were being considered to address the capacity issues. Maintaining the existing transportation system would not work from a permitting or Transportation Planning Rule (TPR) standpoint. Changing the system and access to Foothills would be necessary when adding new housing units. Councilor Tierney emphasized the need to get to conclusions; the primary information was interesting, but how it should be interpreted was unclear. Mr. Snook explained to Councilor Gudman that the LOS and the VC ratio were statements of existing conditions. When forecasting for the future, these indicated whether a fix was needed, typically a capacity fix. Other factors included the potential for a streetcar. Other opportunities would be considered to improve conditions through different portals or access points, which would help the pinch point at State Street and A Avenue. A fix may be required to meet the TPR standards. He further clarified that negotiations with the State would take place as far as whether a new parallel route would be allowed in Foothills. That option would be explored in the near future, and would include discussions with ODOT about the likelihood of having additional access points. Councilor Gudman asked what would result if the State would not permit any in and out point from Highway 43 into the District. Mr. Brown responded that no financially viable project could exist without providing the level of access needed to support the project; that would be a fatal flaw. Essential conditions would be discussed later, but right now, we have a productive, working relationship with ODOT and he believed they would get to a solution. Councilor Olson inquired about the impact of the 300-space parking garage on State Street associated with the enhanced bus and streetcar projects. Mr. Snook replied that they would be using the Metro Regional Travel Demand Model for future forecasting. The model included some transit enhancements in the area and the DEIS would be used to analyze what traffic operations were occurring and were analyzed under that condition. Mr. Brown explained that one issue regarded how and where that proposed park and ride would be accommodated in the District, and its impacts on surrounding circulation. The team would definitely be listening to community concerns about potential cut through traffic, etc. associated with the park and ride; all of which would be part of the overall analysis. Mr. Williams noted that if the enhanced bus or streetcar moved forward, additional analysis would be coordinated with this planning process to ensure the projects tied together. Katherine Schultz, GBD Architects, presented an overview of the land use policy analysis using PowerPoint, noting that the Foothills District plan's vision statement and land use policies correlate to the local, regional and State policies with a couple exceptions that could be corrected through the City's Comprehensive Plan. The two exceptions regarded zoning and height limits. The City Council Special Meeting Minutes Page 6 of 14 February 22, 2011 568 northern portion of the District was zoned industrial and did not align with the City's goal of a mixed-use community. The City also had three zones in the area that did not support density nor type of development promoted in the vision statement. Additionally, the maximum height limits of 40 feet to 50 feet could be restrictive to the density requirements needed for the new development. Existing FAR limits would also restrict the economic viability of the District as a higher density development. The Foothills District also falls under Metro's Regional Transportation Plan, which promotes safe and sustainable transportation opportunities, and Regional Planning rules. Metro has designated a number of downtown centers throughout the region, one being Lake Oswego's downtown. The Foothills District falls completely into that, except for the northern portion, which was designated industrial. The District or town centerline would need to be moved to include the entire district in order to comply with Metro's goals. The team has looked deeper into the Comprehensive Plan, which was being updated. The team would be working closely with City Staff to ensure that the planning processes were in alignment. The team would work to incorporate information from other studies and coordinate with ongoing projects related to the District. They would ensure the plan was cohesive with the design standards of both the Downtown and Old Town districts to ensure the Foothills District blends in and feels authentic to Lake Oswego. Finally, the Foothills Plan would conform to the goals of the surrounding neighboring districts and comply with design standards. Mr. Brown noted the essential conditions update was distributed to the Council, and highlighted key items via PowerPoint. He reminded that the idea was to identify early on and consistently throughout the process any issues that were potential impediments to the viability of the project. From that, six essential conditions were derived. With a goal to produce a financially viable plan, the developers would be responsible for producing a lot of that work. The project team would be discussing the costs, potential financial models and funding sources, etc. The urban renewal consultant would provide a peer review that work and provide Council with another view of the progress regarding the financial viability. The team would continue to work with the Bureau of Environmental Services (BES) on choosing a consultant for the wastewater treatment plant and coordinate efforts during the facilities plan update process to ensure consistency and support of Foothills redevelopment. Mr. Brown confirmed with Councilor Tierney his belief that the City of Portland was willing to engage and work together on the plan, however as owners, their first reaction is to use the least expensive options for addressing the issues, but transforming the surrounding area might prove costly. He did believe that the City of Portland acknowledges their responsibility to be a good neighbor to the surrounding areas as far as odor and visual mitigation. The challenge was to find the right solution to configure the plant in a way that supports redevelopment. Mr. Williams noted a number of meetings were held with City of Portland's Bureau of Environmental Services (BES) Director Dean Marriott and Mayor Hoffman has met with Commissioner Dan Salzman who oversees BES. While concerns existed about Lake Oswego's interests being met, both officials expressed a desire to make the plan work for both parties. They know Lake Oswego was the primary user and were aware of the planning requirements. As a conditional use, they would need to work with the City of Lake Oswego regarding any changes to the facility. The City of Portland understands that the City of Lake Oswego was a partner. Mr.Williams explained to Councilor Tierney that the Staff started researching what it would take to do a business case analysis regarding the City of Lake Oswego operating the plant. However, it started to overlap with this work as well as the Facility Master Plan being done by BES. Staff would follow up on the Facility Master Plan to see what needed to be incorporated into the Foothills planning effort. The City of Lake Oswego would probably bring on its own consultant to help that effort. The City needed to figure out how to work through that business case analysis, but that was put on hold for now until more information was available about those two efforts. Mr. Brown continued noting the last two essential conditions regarded floodplain mitigation and the need to determine the feasibility of expanding or creating a new urban renewal area in Foothills. The team would continue working with the City in the development of a formation or expansion plan. In conclusion, there was no reason the project team could not move forward with the development. Updates would be provided to City Council as the project moved forward. He City Council Special Meeting Minutes Page 7 of 14 February 22, 2011 569 assured that the team was on budget and on schedule for providing the final framework plan per the contract schedule. He anticipated it would be available for Council's consideration this summer. Mr. Williams responded to Councilor Olson that several high level conversations have occurred about transferring Highway 43 to local jurisdictions, namely the Cities of Portland, Lake Oswego and West Linn. However, that was not part of the Foothills Framework Plan project. Some initial work was done by Clackamas County, and more information would be available after a meeting with the engineers analyzing that situation. A briefing was scheduled to update Council on March 17. Mr. Brown stated the team was almost ready to enter the concept planning phase. The opportunities and challenges analysis would provide a general summary of the information gathered and indicate what features and issues the project team should capitalize and focus on to make the concept planning exercise effective. Mike Zilas, Principal,Walker Macy, presented the opportunities and challenges of redeveloping Foothills site via PowerPoint. From a land planning perspective, the site's waterfront location was an outstanding attribute, as well as its proximity to the Downtown. One challenge would be how to connect the both the Downtown community to the District. Noting the traffic and pedestrian analyses, he explained that the high traffic volumes on State Street was beneficial to building commercial development and more vitality; however taming that street would definitely be a challenge. Different connections to State Street were on the table now as the team was very interested in testing those scenarios. Reviewing the Context and Connections, he noted challenges to connecting existing neighborhoods and downtown included the railroad, State Street, and topography. He indicated two possible routes for the potential streetcar. Several potential opportunities existed for connecting the Foothills area to the downtown area, and the team recommended connecting in a variety of locations to create street grid, so Foothills would feel and act like a part of the city. Mr. Zilas confirmed for Councilor Olson that the plan was to create new streets potentially in the apartment area. The team not only considered existing conditions, but the potential for the future, even 20 to 30 years into the future. Mr. Brown clarified for Mayor Hoffman that the team was noting that such areas exist to connect the District to these areas over time as the area develops. If the City wanted a street plan over time, it would have to be codified. The street grid would be phased in over time as the property owners chose whether to develop their sites. Mr. Zilas continued that another great attribute was the existing open space system. Some challenges included the topography and vegetation near Tryon Creek and Terwilliger Boulevard that would make any connections difficult. As far as potential connections in the north area, traffic congestion in the existing neighborhoods was a concern. Having a northern connection to State Street would be beneficial to Foothills. One idea was to redevelop B Avenue. Current connections from B Street down to the railroad and into the site could be difficult due to the topography, but it could be a pedestrian connection in the future. Both the physical and visual connections to Foothills needed to be examined through the process. Obtaining railroad crossings to make connections would be an issue. A lot of retail and commercial activity existed on A Avenue, but not across on the Foothills side, so the potential redevelopment of those parcels was being considered. Concerns existed about creating cut- through traffic in the neighborhoods along the north shore, but that would be a good connection to State Street. They needed to consider how to get signalized connections down to the Foothills. While several topography challenges existed for making connections in the south area, it was not impossible. Numerous connections were possible in the southern portion of the site that would be considered. Mr. Zilas noted the fixed elements in the Foothills, the wastewater treatment plant, condominiums, and parks and indicated three areas that could be redeveloped in the future. If the apartments redeveloped, for example, that area could easily accommodate a variety of new development next to the river. A significant grade break existed between the lower and upper zones, but that area also had quite a bit of potential. Grade changes would be an issue when trying to interconnect the different zones on the site. Mr. Brown addressed Councilor Olson's inquiry about historic buildings saying that the consultants had done a historical analysis and prepared a historic issues paper. The goal was to City Council Special Meeting Minutes Page 8 of 14 February 22, 2011 570 maintain the authenticity of Lake Oswego and connect the District as a whole to Lake Oswego's historical past. Mr. Zilas presented an analysis about the different grades of topography. In planning the circulation routes, the team would adhere to City standards for street slopes and that all plans complied with City Code. The slopes at Oswego Pointe Apartments were dramatic, but built a lot of character into the area. Several historical elements were present in Foothills that they would take advantage of during development. The City had done a great job incorporating historic qualities in the park development on the waterfront, and they wanted to continue that same pattern. Treatment of the exposed sewage trunk lines have also been taken into consideration, as well as the PGE substations as mentioned and the relocation of power supply across the site. A photo was displayed showing where future fill would occur on the 100-year flood plain. Opportunities exist with the wastewater treatment plant to incorporate sustainable features and evaluate how its boundary might interface with the development. Mr. Brown explained that the next step was to begin concept planning, taking everything to the next level of detail including initial street layouts to see how it all will fit together. The existing conditions analysis would be updated through the concept planning exercises. Ideas would be tested against existing conditions to determine what modifications or mitigations might be needed to accommodate the new development. The project team would be working with the City's financial consultant to ensure that a viable project would be delivered. A public open house was scheduled for March 14 to orient people about the status of the planning process for the Foothills District. The team would continue working with the CAC who has been very helpful in adding value to the planning process. Mr. Williams added that the owners of both the Oswego Pointe Apartments and Oswego Village Shopping Center were on the CAC and seemed interested in this work and understood the potential of this project and its impact on their properties. The team would continue working with the property owners throughout the planning process as it was important to retain the neighborhood quality of that commercial/retail use in that neighborhood. They would also continue to work with Metro and TriMet on the streetcar project coming into that area. If Oswego Pointe redeveloped, a phased approach could be taken to not severely impact those living in the area. Mr. Williams explained to Councilor Gudman that different types of development would be considered for those two significant properties in the planning process. More dense residential development and higher buildings were expected,which would be of interest to both property owners who were interest in mixed-use development that would retaining and expanding some type of neighborhood retail while also adding some housing component to the area. It was unlikely that the existing density and building heights would remain. Detail regarding any increased density or the height required to redevelop those areas had not been defined. He emphasized that the District would need to be considered in its entirety, including how the industrial piece could redevelop along with the other major parcels in the south. Mr. Williams responded to Councilor Olson that he had not spoken with the owner of the recently redesigned former RAM Building, but would work closely with them and other building owners as the concepts develop. The idea was to have a consistent vision as people choose to redevelop, not to force anyone to redevelop. The project would provide everyone the certainty of a framework as far as any requirements, and how Foothills would be phased to fit together. Mr. Dame indicated to Councilor Gudman that Foothills could develop without the streetcar, but that would not maximize the potential of the property, which he considered to be the best infill sites in the metropolitan area. As a developer, the Foothills redevelopment was not very exciting without the streetcar. He explained to Councilor Kehoe that there was no way to determine when the project would break ground, especially given today's market and investing requirements. He believed this was a viable project, although some concerns existed. He did not believe the project would work with no streetcar and if the wastewater treatment plant issues were not resolved. The City has permitting authority over the treatment plant and would need to be aggressive so that the City of Portland would not take the easy way out. Solving the wastewater treatment plant problem would go a long way toward attracting the financing necessary to redevelop the Foothills District. He would like the streetcar construction to begin no later than 2015. They found that people would make a commitment if they understood something was coming, but they need to know something City Council Special Meeting Minutes Page 9 of 14 February 22, 2011 571 is going to happen. It took three or four years for Jamison Park to be built in the Pearl District, but people knew it was coming. He did not believe it would take four years to get everything ready. Mr. Williams explained to Councilor Olson that an analysis would be completed as part of the facilities master planning effort to determine what the facility or ratepayers would be responsible for when paying for modifications the treatment plant. That analysis would also determine what would be outside what a typical treatment plant would do because of the proposed development. Any enhancements would be funded through processes in the framework plan. The City of Portland BES had a history of providing good neighborhood improvements to the treatment plant, and Lake Oswego expected the same level of treatment. Mr. Brown added that the City of Portland would need to make improvements to the old plant at current standards, which would include better odor and visual mitigations. Mayor Hoffman questioned the timing of the project, noting the time needed to for Comprehensive Plan and Zone Map changes given the required public process. Mr. Dame explained that the City was really just creating a subdivision, though the lots are bigger. A plat and engineering plans were needed and the property subdivided to create the individual lots,which involved a long process and would be a developer's responsibility. If all went according to plan, work could begin as early as 2013 to break ground in 2015; however the market was a critical factor. Mr. Williams indicated that commitments for the streetcar were made prior to 2015 with the full funding grant agreement where all parties involved have committed to the funding strategy. The commitment for the streetcar would happen before construction, possibly within one year. The City Council took a brief recess at 8:30 p.m. and reconvened at approximately 8:39 p.m. 3.2 Foothills Financial Analysis Contract Brant Williams, Economic & Capital Development Director, requested that City Council direct the City Manager to execute a contract with ECONorthwest in the amount of$129,000 to perform an urban renewal analysis(URA) and financial analysis services for the Foothills framework planning process. This consultant was required by the Predevelopment Agreement (PDA) and ECONorthwest was chosen following the RFP process. Interview panelists included Councilor Tierney and Ralph Tahran, both members of the oversight committee; City Finance Director Ursula Euler; Geoff Guilfoy; Principal at AKT Services; Jane Blackstone, and himself. ECONorthwest has an excellent reputation for this type of work. Also included on their team would be Elaine Howard, with urban renewal experience; Jeanette Launer, urban renewal legal experience; and Don Singer of Integra Realty Resources with development and real estate expertise; WRG for the engineering and infrastructure expertise. He noted that the various tasks were outlined in the packets. The emphasis was on urban renewal options to determine how to fund the development plans put together by Williams/Dame &White. They anticipated that the vast majority of public funding would come from urban renewal tax increment funds. This was a critical piece to make sure that planning effort would be financially feasible. Mr. Williams confirmed for Councilor Gudman that the financial analyses would be completed about the same time as the framework plan, which would be in September. ECONorthwest and the development team would work collaboratively during the planning process. The analysis would include the different assumptions discussed regarding the wastewater treatment plans and the potential parallel roads to State Street and Highway 43. The project team would come up with alternatives for any major infrastructure improvements, and the cost of those improvements would be input the analysis. ECONorthwest would verify that those cost estimates were reasonable and appropriate. The project team would want feedback about the urban renewal analysis as part of the treatment plant master planning process, and to keep the urban renewal analysis [Pt 4, 4:40] on the same schedule as the framework plan. Otherwise, major assumptions would be required to move forward. He also confirmed that the analysis would describe what could not be done in the context of the urban renewal district, if certain options were pursued. He assured Councilor Tierney that ECONorthwest had the low cost proposal. The other consulting firm's proposal was a little more than $150,000. Councilor Olson inquired about several terms in the funding tools evaluation section, including HUD Section 108 Loans, and EB5. Mr. Williams responded he did not have a clear answer regarding 108 loans, but the consultants should be able to explain them when they come to the next meeting. He believed that EB5 referred to a program where immigration fees are pooled for investment purposes that ultimately create jobs. City Council Special Meeting Minutes Page 10 of 14 February 22, 2011 572 Mr. Williams confirmed for Councilor Olson that the goal was to identify funding gaps and determine if funds would be available for the Foothills project. The goal was to have the streetcar paid for 100% by District. Potentially, the uses for funds included the streetcar, treatment plant, potential flood plain mitigation, access to Highway 43 and the infrastructure required for the first development to occur. The URA would help determine what parts of the projects must occur first and what key elements must be funded. Several revenue sources would be examined, including TIFF, LIDs, SDCs, and others. If revenue sources matched up, it was financially feasible. The test was whether Foothills would be financially feasible. Councilor Tierney moved to direct the City Manager to execute a contract in the amount of $129,000 with ECONorthwest to provide financial and urban renewal analysis services in support of Foothills redevelopment planning. Councilor Moncrieff seconded the motion. Councilor Kehoe stated he did not favor approval at this time, noting he preferred to wait until a decision was made on the streetcar. Mr. Dame has stated that the development would not move forward without the streetcar. It did not make sense to spend $129,000 until a local decision was made to support the streetcar,which would be in April. Councilor Tierney understood Mr. Dame was enthusiastic about the project with the street level option, but development could still move forward. ECONorthwest might be considering two different types of development, one with and one without the streetcar. There would still be a framework plan. He did not understand delaying this most critical element regarding the financial viability of the project versus delaying the framework plan. He believed both should move forward together. Councilor Kehoe understood Mr. Dame was not excited about doing this development without the streetcar. He preferred waiting to commit the money after a decision was made, rather than doing a potentially useless study if the streetcar did not move forward. Councilor Tierney reminded that Williams/Dame &White were chosen to do the framework plan because of their experience as developers, not that they would be the developer; it did not make sense to tie up the matter. Councilor Olson believed Councilor Kehoe was referring to the clause in the Williams/Dame & White contract regarding an essential condition that the City continue to fund the streetcar and that it move forward. If a decision was made and money spent, and then the plan changed, that money would be lost. Mayor Hoffman expressed concerns about the contract obligations in the development agreement, adding he did not want to breach the contract with Williams/Dame &White. Councilor Jordan stated many critical decisions needed to be made about development, not just with regard to urban renewal. Even private developers would need information, including any gathered by the consultants at ECONorthwest. If the finances were uncertain, nothing could be developed, including the streetcar. She believed this financial assessment needed to be done now. Councilor Kehoe assured he was not suggesting that the City breach any contract, but considering the timeframes of the URA and framework plan, they could wait for the April 19 vote. Mayor Hoffman reminded that Metro would make the final decision on the streetcar alternative. He did not understand the relationship between the City Council's advisory vote to Metro and going forward with the URA. Councilor Kehoe noted the Council would be a key influence on Metro's final decision. He had talked with property owners in the Foothills area and he did not believe they would develop on their own without the streetcar. Councilor Gudman stated that the financial element was the critical element of this project. If given enough money, any development company could mitigate the floodplain or traffic, etc. He agreed the Council would be a critical element in Metro's decision about the streetcar, yet a recommendation about a locally preferred alternative (LPA) without the information necessary to make a solid decision. He believed deferring the execution of the contract would be best, or else ask Metro and the other entities to defer voting on the LPA until a financial analysis could show it to be justifiable. Councilor Tierney suggested slowing some of the timeframes down rather than delaying the contract. He heard that Williams/Dame &White that would be working closely with ECONorthwest as they developed the concept plan. The contract could be written to allow for cancellation if the vote on the streetcar did not move forward, or for any other reason. Mr. Williams confirmed the final framework plan would be presented in September. He had some concerns about delaying the contract. Williams/Dame & White wanted to move forward with the contract in order to get started as soon as possible due to concerns about being ready when the City Council Special Meeting Minutes Page 11 of 14 February 22, 2011 573 financial analysis was needed. He would have to meet with the consultants to discuss the ramifications of delaying the contract. The contract was originally supposed to have an option for cancellation at any time. If the WilliamslDame &White contract work hit an off ramp, there was no reason to keep ECONorthwest from moving forward. If the contract was approved tonight and the City decided they do not want the streetcar or enhanced bus, both contracts would need to be reassessed. Councilor Tierney pointed out that according to Attachment 1 on Page 49 of the packet, the first task was scheduled for February, meaning they were already a full month behind schedule. He confirmed with Mr. Williams that more money would be spent after the LPA decision than was anticipated. Councilor Moncrieff stated that she would vote yes because staying on schedule would be a benefit to the citizens. She was comfortable with the off ramps in both the framework plan and financial feasibility study. It was an important piece of work. A voice vote was taken, and the motion passed with Mayor Hoffman, Councilors Tierney, Moncrieff, and Jordan voting `aye,' and Councilors Kehoe, Gudman, and Olson voting `nay.' j4-3] The City Council consented to continue the meeting despite the late hour. A brief discussion on meeting format and agenda followed and the consensus was that short items on the agenda requiring a vote should be placed early on the agenda rather than at the end. 3.3 Siting Options Analysis —Waluga Reservoir No. 2 Joel Komarek, Project Director, Lake Oswego-Tigard Water Partnership, noted that his report was available in the packet and really a continuation of prior discussions with City Council and the oversight committee. On December 17, 2010, City Council approved a supply facilities capital improvement program, which included the design and construction of a 3,500,000-gallon reservoir at the City's existing Waluga reservoir site. During deliberations, Councilor Tierney introduced an amendment to the approval of the new reservoir directing that an additional $2 million be allocated for further study of possible alternate sitings and sizing options as well as the added miscellaneous costs that might be incurred in those options for design, construction, mitigation and permitting. The several options that were studied were identified in Exhibit A of the report; some were presented to the oversight committee prior to the December 17 meeting. The three options presented before the Council tonight and identified as Options 1, 2, and 3, had Staffs full support and the project management engineering team. Mr. Komarek explained to Councilor Kehoe that Option 5 was discarded because it exceeded the 50-foot height limit. The 75-foot tall existing tank was constructed in 1925 before the current height limitation of 50 feet maximum. A new tank could not be rebuilt at the same height without changing the Charter. David Powell, City Attorney, believed the Charter's 50-ft limitation only applied to residential properties. The parcel would need to be rezoned for public use in order to get out of the Charter limitation. Mr. Komarek confirmed that the parcel was currently zoned residential. Councilor Gudman inquired about some new rules Council had adopted to prevent residents on the lake from substantially tearing down their homes only to rebuild substantially bigger homes in the area. Mr. Powell explained that a percentage limitation was also created. Though Council made some exceptions, the Charter would overrule such exceptions. He quoted, "The City shall neither construct nor allow the construction of any structure which is more than 50 feet in height within the residential zone except for...," he explained such things as steeples, etc. If not zoned residential, the Charter's height restriction would not apply to the parcel. Mr. Komarek clarified for Councilor Olson that Option 5 would remove more trees in total than Staff recommended Option 1 because of the reservoir at 10th Street in addition to Waluga. Adding an additional 30% for design, construction management, mitigation, and permitting to the $1.6 million, moved the total very close to the $2 million limit. Mr. Komarek confirmed for Councilor Jordan that the three options considered storage south of the lake and the reduced water consumption. Mr. Powell further quoted, "For nonresidential structures, if a nonconforming structure was damaged or destroyed by any means to the extend that the cost of rebuilding the damage portions City Council Special Meeting Minutes Page 12 of 14 February 22, 2011 574 exceeded 50% of the then replacement costs of the entire building, the rebuilding shall conform fully to City Codes and standards." Mr. Komarek explained to Councilor Gudman that he was uncertain how much contingency was built in specifically for this reservoir project, but overall about $8 million in contingency existed for the entire program. He guessed the contingency would probably be 20% or 30% of the total cost of this particular project, about $300,000 to $500,000. Jane Heisler, Communications Director, indicated to Councilor Tierney that no conversations had taken place with the neighbors, but Staff had a phone conversation with Maria Menagin, Chair of the First Edition Neighborhood about some constraints, namely the Charter amendment. Staff had not discussed the Option 5 with her, but agreed to keep her informed. Maria Menagin, Chair, First Edition Forest Hills Neighborhood Association, stated that while not her opinion, she had told Mr. Komarek and Ms. Heisler that the neighborhood would have concerns about removing an established tank and the surrounding mature trees, as well as tearing up the neighborhood, not just on that lot, but to bring in the pipes and deal with the pump station. She wanted to be kept in the loop if Option 5 moved forward, but Staff did not think it would because of the reasons discussed. Ms. Heisler stated that two neighborhoods would be affected. She explained to Councilor Gudman that Staff had talked with Waluga about Option 2 and the recommended option in the past. The other option added height but reduced the footprint slightly. Option 3 would be 125 feet in diameter, while Option 5 would be 130 feet in diameter. Mr. Komarek explained to Councilor Gudman that the Waluga neighborhood had seen the analysis for Options 1, 2, and 5; Option 3 was new and added to further decrease the diameter and move the reservoir further away from Park Hill residents. Councilor Olsen noted Park Hill residents were in the audience. Mayor Hoffman reminded this was not a public hearing. Councilor Tierney moved to adopt Option 3. Councilor Jordan seconded the motion. Councilor Tierney stated that the immediate neighbors preferred Option 3, and in the interest of having a supportive neighborhood for a challenging project, he deferred to their preferences. Option 3 increased the height, reduced the diameter, and moved the reservoir further south, all at a reasonable premium. Councilor Moncrieff said she would not support Option 3 because it would require a pump and therefore more energy and electricity. While the neighbors would prefer less of a visual impact, it was not in the best interest of the ratepayers or citizens to choose an option that would cost more to operate long term. Councilor Olson added that the neighbors she spoke with preferred a combination of Options 3 and 5, or Option 5. Option 3 had better sight line differences and would remove fewer trees; she reminded that whole area was Sensitive Lands. She suggested Option 5 be explored further, but at the very least, she supported Option 3. Councilor Jordan agreed Option 3 saved trees and although the reservoir would be taller, it would have a smaller profile on the property. As far as the energy costs, she believed that better technology might develop over time to help reduce those associated costs. Option 3 did not have a big premium up front, and would probably stay under the $2 million limit for a few years, allowing time for new technology or better methods. Mayor Hoffman stated that he preferred Option 1. Councilor Gudman inquired whether there would be Council support for merging Options 3 and 5. A straw poll vote was taken with Councilors Kehoe and Olson voting 'aye,' and Mayor Hoffman, and Councilors Jordan, Tierney, and Moncrieff voting `nay.' regarding the merging of Options 3 and 5. [2-5] Councilor Tierney stated he was hesitant to engage in rezoning or City Charter issues, which would be challenging, especially considering the time constraint that process would put on the project. Council must balance the need to complete the project compliant with the City's contract and the hurdles of a City Charter issue. Mayor Hoffman confirmed that Councilors Kehoe, Jordan, Gudman, Olson, and Tierney supported Option 3, while and Councilor Moncrieff and himself supported Option 1. City Council Special Meeting Minutes Page 13 of 14 February 22, 2011 575 The motion to support Option 3 passed with Councilors Kehoe, Jordan, Gudman, Olson and Tierney voting `aye,' and Mayor Hoffman and Councilor Moncrieff voting `nay.' [5-2] 3.4 City of Lake Oswego Legislative Platform The Legislative Platform was postponed to the next meeting due to the late hour. 3.5. Resolution 11-06, a resolution of the Lake Oswego City Council declaring the public necessity to remove covenants and restrictions on real property for the Lake Oswego-Tigard Water Partnership project and authorizing related activities Councilor Tierney stated the resolution was discussed in a prior Executive Session where he had requested time to speak to councilors in West Linn. After attending a meeting in West Linn two weeks ago with Mr. Komarek, Ms. Heisler and some City of Tigard staff members, he believed more time was needed to ensure people in West Linn had time to vet the more recently received Plan B. Councilor Tierney moved to table Resolution 11-06 for no more than 60 days with the intention of directing the City Manager to continue efforts to engage the neighbors to come to some sort of resolution. Mayor Hoffman seconded the motion, which passed unanimously. [7-0] Councilor Tierney commended Ms. Heisler for her work in promoting the good neighbor policy and working within the existing plan to make it as comfortable and successful to the neighbors as possible. It was important to identify the issues and determine any common ground before adopting the resolution. Staff announced that tomorrow could be a snow event, so Staff might be readily accessible. 4. ADJOURNMENT . Meeting adjourned at 9:25 p.m. Respectfully submitted, Jane McGarvin Isl Jane McGarvin Deputy City Recorder APPROVED BY THE CITY COUNCIL: ON September 6, 2011 Bill Tierney Isl Bill Tierney, Council President City Council Special Meeting Minutes Page 14 of 14 February 22, 2011 576 Exhibit A Lake Oswego Tigard Water Partnership Storage Alternatives' Options Not Recommended for Further Evaluation Option 1 Optlon2 Option 5 option 4 Option 5 Opl1On 6 Option 7 Datlon 8 Option 9 Option 10 3.5MG 4014 I 9.5MG S0'H 3.OMG 40'H 3,OMG 40'H North 1,5 MG 40'H 2.O MG 40'H 3-SMG 22'H 3.SMG 40'H North 3.5MG 85'H x.0 MG 4tYH Waluga at Waluga et Wallies at Grade and Waluga an Fill ere! Waluga et Grade and Waluga at Grade and Grade Waluga at Grade I Grade Waluge en Nil µ kh n Waluga at Grade end 1.6MG 40'ir BPS- 0.5M075'H30 Street 0.5MG 75'81O Street 2,0 MG 50'H 10o'Street 10 Street 1.6MG In Tigard 410 Zone_ at Grads Reservoir Diameter 14tl 195' 125' 140' 130'Waluga 130•Walton 95'Waluga 110'Wabsge - Off 10r"Street 40'10`h Street 100'10'''Street 9U' 130'Waluga 100'BPS 1 150'S Waluga 220'5 Weiuga 190'S Waluga 120'S 30'S 145'S 210'S 30'W Waluga 45'W Waluga t u6 8 Distance to Neighboring Properties 30'W Waluga 15'-55'N I60'5 Waluga 160'5 Waluga 30'W 30'Lv 30'W 45'W • 35'N 1014 Street OS'N SOth Street 15'-85'N 10'Street 3ff E 30'W Waluga 30'W Waluga ---� 10'E 101h Street - Exceeds 10"Street SD' teteeds 1.0 street SO' Exceeds 10"Street SO' City Charter Conflicts None None None None Residential Besldentlul Residential • None None Horte lone lceight leant per Cane He lo h!t Limit per Zorn Height Mat per City thanes Ely Charter C5t'Charter 35'H Waluga 35'H Waluga 35'H Waluga 30'Setback Waluga 30'Setback Waluga 30'Setback Waluga 28'H Zoning Constraints 35'H 35'H 35'H 35'H 28'H 10'Street 28'H 101°Street 28'H loth Street 20'FY Setback 55'H Waluga 35'H WaI a 330'Setback Waluga . 30'Selbaek 30'Setback 30'Setback 30'Setback 20'FY Setback 10t"Street 20'FY Setback 10°Street 20'FY Setback 10'h Street 10'NY Setback 30'Setback Waluga 10'RY Setback 10''Street 10'RY Setback 10"Street 10'RY Setback 10"'Street 5'SY Setback Unknown/T8D BPS 5'SY Setback SD'"Street 5'SY Setback 10"'Street .S'SY Setback 10'Street No.COrrecis extsthig Waluga Na(additional deflrlett hS,eel creates new pressure Additional Storage Corrects Erclst€ng Service Yes system Ne(additional system Yes Yes Yes Yes defreleae!es in 10"Street Yea Yes Pressure Deficiencies? improvements pressure zone regaining improvements necessary) necessary) addlllnnal system - Improvements and rrd/oslnrents Removed Trees(Approximate) 5060 110.120 30.40 80.90 60-R0 90-110 34-40 10.20 30.40 30-40 FN!ln,ta!n Aim/kcal Fftl A,voives significant tregtes OPS operational CreaitT additional seismic and different al seismic and differentia! • Major Risks sett ervent risks.Special settlement ricks.Special flow belorrd:rpchallenpts sang,land ocquisltlan foundation derl�ll Jawsdn:inn design one/regalres increased BPS and land eat chatenges _..... __...- q - muttered. and warily, for APS marked. Provkles u0/„Lo Provides nO net benefit tor PotentlalycdnfSctf with • beisatit far T vd Pr, e•+IAes re net 6.•set!'f ICA. Pravldesno net benefit Tigard, m Provides n+,net hm•efh roe Prvvrd,•s no nM benefit ter Prrnddo.,rn ilk hr,i,'In for Pmxldcr co net bench!tar (nr rimed,addkinnnl LOTWP Partnership Impacts eddtbanal tigarcl,a-caHmna to to -TB:vd,attrition.,,mts to Tic ed.,mtiticnal rests to rrgnul,additional Will.to be Tigard,ackktienal rusts ter urldittortat col• cents to tie he•,.a no by Leh•Osva, M h: be l: ge by tare! ue �.km,'t„ „ rnr'by rake Uswego borne by l eke Oswego be home he Lake Owego Provides no net belief for costs to be borne toy to be hwnu by borne Lake lejard,addrtren Lake Dswrgc; tel hi at:sett to Laic Oswego Oswego he borne by Lake Oswego • Englneering/Technlcelly Desirable Solution Yes Yes Yes No Yes No No No No Ne Estimated Construction Cost increases' Prestressed Concrete Tank Baseline $0.8M 50.2M $0.2M $1.2M $1.4M $1.5M SLIM $O to OM $1.4M4 -' Supporting Fill Baseline $1.01.4 $1.OM - • Additional Site Work Baseline $0.4M $0.4M SCAM Unkn0Wn/T8D Unknown/TBD Booster Pump Station Relocation Baseline Unknown/7BD Unknown/Tao New Land Acquisition Baseline Unknown/TBD Unknown/TBD Pipe improvements Baseline $1.1M $3,OMr _.$2.5M_ _ $9.6M _ 25 yr Lifecycle Pump and Electricity Raselirse -$0.9M 50.5M _ Unknown/TBD $0.5Ms $4.0M Subtotal $0 Baseline 51.0M 50.7M S1.2ni SEGO S2.BA! ` $4.9Mr $3 7M+ SA.2A•ra t0 S6,2Mr SCOW, i 3 sa r f$l 1M Stranded Waluga Lend investment '.cc,ceat.•jinni dal Cost increase to Lake Oswego $0 Baseline $1.0M 50,7M ' $1.2M --_ - duce2h1,10 f gi.eA•f Sxeril f4.9M+ �7znrF S4.zn4+m3d,aM. $3.4r1+ 1. Based on available information as of February 2031.Abbreviations:BPS-Bonita Pump Station,F.-test,FY-Front Yard,FWP-Finished Water Pipeline,H-High/Height,IGA-Lake Oswego Tigard intergovernmental Agreement,MG-Million Gallons,N-North,AY-Rear Yard,S-South,SY- Slde Yard,W-West 2. Estimated cast increases are approslmste,preliminary,based on available initial information,and estimated art a uniform and consistent basis between alternatives. alEXHIBIT F-18 LU 12-0044