Project Area: 15 city blocks Contributing Drainage Area: 32 acres Right-of-Way Width: 60 feet Participating Agencies: King County Wastewater Treatment Division Timeline: Planning started 2009 Construction, 2013-2015 Cost: $5.1 million Goals Stormwater management: Reduce combined sewer overflow events by at least 75%. Demonstrate possibilities: Serve as a model for future green infrastructure retrofit projects for…
Project Length: 1.6 miles Right-of-Way Width: 60 feet Participating Agencies: Portland Bureau of Environmental Services, Portland Bureau of Transportation Timeline: 2009 – 2015 Cost: $13 million, including $2.5M in federal transportation funds and $3.3M in local transportation funds Goals Stormwater management: Eliminate sewer backflows into basements and streets in the project area. Water quality: Reduce…
Project Length: 660 feet Contributing Drainage Area: 2.3 acres Right-of-Way Width: 100 feet Participating Agencies: Seattle Public Utilities, Seattle Department of Transportation Timeline: Completed Spring 2001 Cost: $850,000 Goals Stormwater management: Reduce the two-year, 24-hour storm event (1.68-inches) peak runoff rate and volume to pre-developed conditions. Environmental preservation: Reduce the flooding and pollution impacts of…