Aspect is assisting a concrete pole manufacturer complete stormwater infrastructure improvements to comply with their ISGP. The facility is on a Port of Everett brownfield undergoing MTCA cleanup. We developed, coordinated, and implemented a strategy to fast-track remediation of overlying contaminated soils to facilitate replacement of their storm drainage pipes. Our approach resulted in faster removal of 2,000 cubic yards of contaminated soil, improved ISGP compliance, better site drainage, and lower construction cost by separating the work from the RI/FS process. Our involvement in both the remediation and stormwater work allows adaptation of the project to changing conditions.
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.
Duwamish Marine Terminal Industrial Stormwater General Permit Support
After providing expert support during settlement of a Clean Water Act citizen suit, Aspect designed an above-ground media-filtration stormwater treatment system for a 5-acre marine terminal and barge loading facility on the Duwamish River. Our design included an innovative collection and conveyance system to avoid soil disturbance along the shoreline and reduce local permitting requirements. The client has not triggered a Level 2 or 3 Corrective Action since installation of the system in 2011.
Metal Fabricator Industrial Stormwater General Permit Support, Seattle, WA
A metal fabricator and electrical supplier was sued under the Clean Water Act for elevated concentrations in stormwater zinc just weeks before of a Level 3 Corrective Action deadline. Aspect quickly determined roofing was the primary source and negotiated installation of a roof downspout filter—meeting the deadline and greatly aiding settlement. After settlement, we assisted the client in coating the roof to avoid ongoing maintenance costs. The site now routinely meets all benchmarks.
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.