Technical Evaluation Reports for GULD Treatment Technologies

Below are links to download the Technical Evaluation Report (TER) documents for some of the stormwater treatment devices and technologies that have gone through the TAPE Program and have been awarded a General Use Level Designation (GULD). More TER documents can be made available by submitting a public information request through the Washington State Department of Ecology

  • Washington State Department of Transportation (WSDOT) Media Filter Drain (previously known as the WSDOT Ecology Embankment). Download at WSDOT's stormwater research webpage. July 2006.

  • Washington State Department of Transportation (WSDOT) compost amended biofiltration swale. Download. NOTE, pdf file is 72 MB. September 2011.