Redmond Stormwater Trunk Extension and Water Quality Facility Wins Silver at ACEC WA EEA Awards
February, 2025
This year’s American Council of Engineering Companies (ACEC) Washington Awards Banquet celebrated a variety of projects from the region that improve communities through innovative engineering solutions. We’re proud to share that Otak’s NE 40th Stormwater Trunk Extension and Water Quality Facility project was honored with a Silver Award for Successful Fulfillment of Client/Owner Needs, highlighting the exceptional work and the dedication of our stormwater planning and environmental teams to collaborate closely with our client partners.
In further developing the City of Redmond’s stormwater infrastructure, this project stood out for a design that ensures water quality for people and natural habitat alike, while encouraging investment in the redevelopment of the area.
About Phase 1: Street Stormwater Trunk Extension
Redmond’s proactive approach to stormwater management included extension of a stormwater trunkline to a new direct outfall into Lake Sammamish to accommodate future redevelopment without the need for large on-site flow control facilities. This allows for higher density in a growing urban area around the new Redmond Technology Light Rail Station.
About Phase 2: Water Quality Facility
At the upstream end of the trunkline basin, the NE 40th Street Water Quality Facility was established to treat highly polluted runoff from 19 acres of a high-traffic roadway area. The new retrofit treatment site includes a unique leaf-shaped biofiltration facility that is viewable by pedestrians and transit center users at a gateway node within the city.
Congratulations to our team, client, and project partners for their hard work and dedication! We look forward to continuing our mission of delivering innovative and sustainable built solutions.
- Tyson Hounsel, Otak Project Manager
- BHC Consultants – Pump station design
- GeoEngineers, Inc. – Soils investigation and geotechnical recommendations
- Transportation Engineering Northwest – Signal modification and traffic control design
- Razz Construction
- KLB Construction
