Project Information

Bid Title

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

Issuing Agency

King County

Location

Washington

Published Date

Jun 24, 2026

Closing Date

Jul 8, 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 KC001590-2,1
	Title Heavy Civil GC/CM Services for MDCSO Chelan Wet Weather Storage Project Solicitation Type Alternative Procurements Status Active Buyer Leeann Snyder Email lsnyder@kingcounty.gov Synopsis King County (County) requests final 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. NOTE: Submittals for RFFP phase will only be accepted from Finalists invited to the solicitation. Addendum Description Addendum 1 has been issued. Suppliers must acknowledge all addenda before submitting a proposal. If a supplier has already submitted a proposal, they MUST log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit the proposal. Attachments KC001590-rffp-addendum-1.pdf (1.48 MB) KC001590-rfp-addendum-2.pdf (797.42 KB) KC001590-rfp-documents.zip (7.15 MB) KC001590-addendum-1.pdf (1.12 MB) KC001590-rffp-documents.zip (10.83 MB) Open Date 6/24/26 03:32:02 PM Close Date 7/8/26 01:30:59 PM Posting Date 6/24/26 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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