The Green-Duwamish Watershed is Seattle’s only river. Designated by the Environmental Protection Agency as a Superfund site in 2001, it is one of the nation’s most toxic hazardous waste sites. The Duwamish River flows into Elliot Bay and is a significant contributor to Puget Sound water quality, as well as salmon and orca health. Green Stormwater Infrastructure (GSI) has emerged as a practical solution to reduce both water volume and contaminants from industrial sites that flow into stormwater drains and into the Duwamish River. Many local manufacturing and industrial businesses produce significant zinc and heavy metal runoff from their roofs and downspouts, yet GSI educational materials and outreach in this area are limited. In areas not connected to the sewer system, GSI solutions help decrease water volume during heavy rainfall and help prevent additional pollution from entering the Duwamish.
In 2018, ECOSS and Equinox Studios joined forces to develop a first-of-its-kind, large-scale industrial GSI demonstration site. The Equinox “Industrial Strength” GSI demonstration site showcases stormwater solutions that can be adopted by any industrial or manufacturing business to improve water quality from rainwater pollution.
Funds from this grant will help ECOSS continue the partnership with Equinox Studios and continue water quality testing through 2022. We will collect a data set spanning 3+ years to illustrate and promote the effectiveness of GSI system. Building on the successful demonstration site, it is time to take these results to the broader industrial community. ECOSS will engage up to 5 new businesses then plan, implement and track results on a wide range of GSI technologies. ECOSS staff will be fully trained in water sampling and work to train business maintenance staff on Best Management Practices. We will develop a series of case studies for distribution to media, trade publications and at conferences.