Implementing Low Impact Development Projects

The 2006 Legislature appropriated $2.5 million to provide grants to local governments in the Puget Sound Basin to fund low impact development (LID) stormwater management projects to meet critical stormwater management needs to protect and restore water quality. The program was included in the Governor’s 2006 Supplemental Budget and is an integral part of the Governor’s “Puget Sound Initiative.”

The Fiscal Year 2007 Low Impact Development Grant Program:

What is Low Impact Development?

LID uses site-specific engineered systems that mimic predevelopment conditions when it rains. Many factors, such as soil type and drainage, storm events, and the type of development are evaluated to determine the type of LID techniques best fit the site.

Ecology awarded 10 grants in November 2006. The projects should complete construction by 2008. For two to three years following construction, the grant recipients will perform water quality monitoring and continue education and outreach programs. Because most recipients just completed construction, there is no monitoring data yet available.

In cooperation with the grant recipients, Ecology created stories about each of the projects that describe the following:

Below is a list the funded projects. The implemented LID practices are in parentheses: (Click on map points to read their stories)

  1. Bainbridge Island School District – Bainbridge High School Stormwater Controls Project (rain garden, downspout dispersion)
  2. City of Bremerton – Bremerton Blueberry Park & Urban Gardens (pervious pavement, rain gardens, green roof)
  3. City of Issaquah – Rainier Boulevard LID Street Improvements Project (permeable asphalt, rain gardens)
  4. City of Olympia – Decatur Street LID Demonstration Project (under drain infiltration system, stormwater filtration, rain garden, porous asphalt)
  5. City of Port Angeles – Future Builder’s LID Streetscape (rain gardens, pervious pavement)
  6. City of Poulsbo – Caldart Avenue Stormwater LID Project (porous cement, bioretention)
  7. City of Redmond – Grass Lawn Park Phase II (rain gardens, green roof, pervious surfaces)
  8. King County – Military/272nd Intersection Improvement (bioretention, porous concrete)
  9. Kitsap County Consolidated Housing Authority – Parking Lot Retrofit (rain gardens)
  10. Snohomish County – Evergreen State Fairgrounds LID Improvements (rain gardens, bioretention, porous surfaces)


Related Links

Prior Materials

Permit contact info

LID Technical Manual

Washington State University Extension

Puget Sound Partnership