Project Information

Bid Title

Heavy Civil GC/CM Services for MDCSO Chelan Wet Weather Storage Project

Issuing Agency

King County

Location

Washington

Published Date

Apr 10, 2026

Closing Date

Apr 20, 2026

Government Level

State & Local

Status

Closed

Ref. #

KC001590

Original Source

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Bid Documents

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Project Description

	Abstract: Alternative Procurements KC001590,1
	Title Heavy Civil GC/CM Services for MDCSO Chelan Wet Weather Storage Project Solicitation Type Alternative Procurements Status Amended Buyer Leeann Snyder Email lsnyder@kingcounty.gov Synopsis King County (County) requests proposals from firms interested in providing Heavy Civil GC/CM Services for Mouth of Duwamish Combined Sewer Overflow (MDCSO) Chelan Wet Weather Storage Project. This is a project specific GC/CM. The Contractor may be responsible for multiple early work packages over the life of the GC/CM contract. Addendum Description Addendum 1 has been issued. Proposers must acknowledge all addenda before submitting a proposal. If a Proposer has already submitted a proposal, they must log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit. Attachments KC001590-addendum-1.pdf (1.12 MB) KC001590-rfp-documents.zip (7.15 MB) Open Date 4/7/26 04:41:18 PM Close Date 4/20/26 01:30:59 PM Posting Date 4/7/26 Additional Information KC Solicitation NAICS Code(s) 237990;237110;541330 Small Business Requirements Apply? Yes Department NATURAL RESOURCES AND PARKS Division WASTEWATER TREATMENT
	O K

Commodity Codes

• NAICS 236220Commercial and Institutional Building Construction
• NAICS 237310Highway, Street, and Bridge Construction
• NAICS 237990Other Heavy and Civil Engineering Construction
• NAICS 541330Engineering Services
• NAICS 541990All Other Professional, Scientific, and Technical Services

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