Wastewater Collection System Rehabilitation
The project involves the rehabilitation of public mainlines and public laterals, and reconnection of each homeowner’s private house service line to those rehabilitated public laterals or mainlines. The project does not include work on privately owned house service lines, except for reconnection to the public lines.
Bids for the rehabilitation work were received in January 2018. Construction is expected to begin spring 2018, and take about three months to complete. Additional notifications will be provided to property owners and residents about one to two weeks prior to the beginning of construction work within each respective area. Construction is expected to take about one or two weeks for each area of work.
Allowable construction hours are Monday to Friday, 7 a.m. – 6 p.m. and 8 a.m. – 6 p.m. Saturdays. Construction is not allowed on Sundays or holidays. There will be temporary road lane closures during construction; traffic will be controlled with appropriate signage and/or flaggers. When needed, emergency access will be accommodated to any property, even during working hours. Roadways will be opened at night and other non-working hours.
In 2017, the City of Lake Oswego began a sewer rehabilitation project in multiple neighborhoods to improve and repair parts of the sanitary sewer system that are deteriorated. While construction was originally anticipated to occur in 2017, it has been rescheduled for the early part of 2018.
The sewer lines selected for repair and rehabilitation with this project are located in the following areas:
- Within an easement between 455 and 475 Furnace St.
- The alley between 4th and 5th Streets from B Ave. to C Ave.
- The alley between 2nd and 3rd Streets from D Ave. to E Ave.
- 5th St. between Evergreen Rd. and Lake Bay Ct.
- Lake Forest Dr. between Berwick Ct. and Ellis Ave.
- Weidman Ct.
- Within an easement at 1920 South Shore Blvd., and in South Shore Blvd. near the Fire Station
- South Shore Blvd. near its intersection with McVey Ave.
- McVey Ave. near Parrish St.
- Erickson St. between Ash St. and Maple St.
- Within an easement at 2390 Palisades Crest Dr.
Pat McDougal, P.E. Senior Associate Engineer
March 22, 2018 - Inspections of sewer lines in April 2018
In early April, the contractor (James W. Fowler Company) expects to conduct closed circuit television inspection of all lines to be repaired and rehabilitated.
This work will not involve excavation, but placement of their television van and workers may require some traffic control signage or flagging.
Once the initial inspection work is completed, the contractor expects to start the repair and rehabilitation work. Their preliminary schedule indicates they will proceed as follows, however, schedules are subject to change:
The alley between 2nd and 3rd Streets from D Ave. to E Ave. Mid – May
Lake Forest Dr. between Berwick Ct. and Ellis Ave. Mid - May
South Shore Blvd. near the Fire Station Mid - May
Within an easement between 455 and 475 Furnace St. Mid - Late May
The alley between 4th and 5th Streets from B Ave. to C Ave. Late May
South Shore Blvd. near its intersection with McVey Ave. Late May
Erickson St. between Ash St. and Maple St. Late May
Within an easement at 1920 South Shore Blvd. Early June
Within an easement at 2390 Palisades Crest Dr. Early June
5th St. between Evergreen Rd. and Lake Bay Ct. Mid - Late June
Weidman Ct. Mid - Late June
McVey Ave. near Parrish St. Late July
The duration of work within each area is anticipated to be 2 to 3 weeks. Repair and rehabilitation work will be one of three different methods. One method involves placing a Cured In Place Pipe (CIPP) liner within the old existing pipe. Another method involves bursting the old pipe while inserting a new High Density Polyethylene (HDPE) pipe in its place. The third method involves excavating a trench and laying new pipe parallel with the old pipe, then abandoning the old pipe in-place.