In the early 1990's, the Federal Clean Water Act required municipalities with populations greater than 100,000 (including areas municipal separate storm sewers located within the boundaries of a region defined by a storm water management regional authority based on a jurisdictional, watershed, or other appropriate basis that includes one or more of the systems) to apply for and obtain a National Pollutant Discharge Elimination System (NPDES) permit for their stormwater discharges.
In Oregon, this program was delegated to the Oregon Department of Environmental Quality (DEQ).
As a result, DEQ directed six Oregon jurisdictions and associated co-permittees to apply for and obtain a municipal NPDES stormwater permit. Clackamas County was one of the jurisdictions required to obtain an NPDES permit, and the City of Lake Oswego is one of the 13 co-permittees on the Clackamas County permit. City of Lake Oswego received their NPDES stormwater permit from DEQ in 1995. The NPDES Permit has subsequently been renewed in 2004 and in 2012.
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Stormwater runoff is generated from dispersed land surfaces including pavements, yards, driveways, and roofs. Therefore, efforts to control stormwater pollution must consider individual, household, and public behaviors and activities that can generate pollution. It takes individual behavior changes and proper practices to control stormwater pollution.
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In an effort to proactively ensure that illicit discharges are not occurring, the City implements a program of inspections, dry weather field screening, and monitoring to eliminate any potential illicit discharges to the MS4 system.
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The City of Lake Oswego conducts a variety of activities focused on the prevention of typical stormwater pollutants (sediment, hydrocarbons, trash and debris, nutrients, metals) from entering the MS4 system. Such activities include the maintenance and repair of City streets; the maintenance of public parks and recreational areas with the intent of minimizing fertilizer and pesticide use; the...
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The City provides opportunities for public participation in the development, implementation, and modification of the policies, practices, procedures, and codes that comprise the City’s Stormwater Management Plan (SWMP) and pollutant load reduction benchmark development.
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The City of Lake Oswego conducts a variety of activities focused on the prevention of typical stormwater pollutants (sediment, hydrocarbons, trash, debris, nutrients and metals) from entering the M
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