Status:

As of March 2024
Phase: Post-Construction and Closeout

• Existing Conditions
• Pre-Design Plan
• Design Civil Site Plan
• Design Landscape Site Plan

The work for this project has been combined with the Pump Stations - Miscellaneous Sites project to create a single plan set and construction contract.

Please refer to the Pump Station 26 & Citywide Stormwater Safety/SCADA Improvements project page for construction updates.

Schedule

• The project was deemed substantially complete in June 2023. See the construction website for notable planned correction work. 

Right now we are working on

• Post-Construction corrections and punch-list work

Overview and History

Pump Station 26 is one of eight stormwater pump stations currently operating in the City and has been in operation since 1970. It detains runoff from a 74 acre, mostly single-family residential area to prevent flooding and move water to downstream piping that eventually flows to McAleer Creek. Now 50 years old, the pump station is past its intended operational life and has several parts that are out of compliance with current safety and stormwater codes. It has been identified in multiple studies as a candidate for replacement.

A Stormwater Pump Station Condition and Capacity Assessment was completed in 2016. This report evaluated the City’s eight existing stormwater pump stations, identified various deficiencies, and recommended general improvements for each station. It found Pump Station 26 in need of a total rebuild due to its age, lack of ability to handle high-runoff events without flooding, and frequent pump maintenance issues.

In early 2019, the City put out a Request for Qualifications (RFQ) to hire a design consultant to design consistent pump station improvements across all eight of the City’s existing surface water pump stations. After review of multiple firm proposals, BHC Consultants, LLC was selected. In mid-2019, BHC began the first phase of their scope, which was to assemble a Stormwater Pump Station and SCADA Improvements Preliminary Design Report. This report verified and expanded on the findings of the 2016 Conditions Assessment, provided telemetry design recommendations for all stations, and provided preliminary design for the two pump stations requiring full replacement, including PS 26. The recommended improvements for PS 26 include a new pump station, discharge and inlet piping, force main, telemetry, and conducted preliminary design and cost estimating for multiple detention facility alternatives to optimize flood control, flow control, park space, and cost.

Community Outreach

The public was invited to an online webinar with a question and answer session on August 25, 2021. An online engagement and survey site was also available during August 11th - 25th for participants to provide feedback.

If you were unable to participate, you can watch a recording of the online presentation or read the Outreach Summary.

Funding

Work is currently funded from multiple sources. King County Flood Control District (KCFCD) has contributed with a Flood Reduction Grant as well as the KCFCD Sub-Regional Opportunity Fund. The federal government has contributed through the American Rescue Plan Act of 2021 (ARPA). Remaining spending will be covered by local funds.

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