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Architecture & Engineering


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March 19, 2025

Weigh in on future county CSO project

SEATTLE — King County is seeking industry feedback on construction plans ahead of soliciting the upcoming Mouth of Duwamish Combined Sewer Overflow project.

According to a request for information issued Tuesday , the county eventually plans to use the general contractor/construction manager delivery method for the treatment station estimated at $600 million to $2.3 billion. Responses to the RFI are due by 1:30 p.m. on April 8 to the county's E-Procurement Supplier Portal.


 
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