Aspect assisted in upgrading the stormwater management system for a municipal waste transfer station in Pasco. We authored a SWPPP, evaluated and designed upgrades to the stormwater treatment and disposal system to enhance protection of groundwater, and permitted the existing and new drywells under the Washington State’s UIC regulations.
Auto Recycler Stormwater Treatment System Design, Renton, WA
Aspect designed an innovative media-filtration treatment system to complete a Level 3 Corrective Action at a 5-acre auto-recycling facility as a component of settling a Clean Water Act citizen suit. Our design was aimed at treating low to moderate levels of copper and turbidity. The media bed consisted of oyster shells over a bioretention soil mix. The system was constructed by the client at low cost. The client has not triggered a Level 2 or 3 Corrective Action since installation of the system.
Log Yard Industrial Stormwater General Permit Support (ISGP), Hoquiam, WA
Aspect assisted a small, partially paved log yard respond to a Clean Water Act citizen’s suit. After investigating the fecal coliform monitoring requirement, we determined that Ecology erred in requiring additional monitoring and successfully worked with Ecology to eliminate the requirement. As a component of settling the lawsuit, Aspect updated the SWPPP, performed employee training, recommended operational and structural BMPs, and participated in Consent Decree negotiations.