Project Information

Bid Title

RFP-Biosolids and Residuals Hauling Services

Issuing Agency

King County

Location

Washington

Published Date

Feb 18, 2026

Closing Date

Mar 2, 2026

Government Level

State & Local

Status

Closed

Ref. #

KC001580

Original Source

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Bid Documents

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Project Description

	Abstract: G&S Solicitation KC001580,1
	Title RFP-Biosolids and Residuals Hauling Services Solicitation Type G&S Solicitation Status Active Buyer Stephanie Wong Email SWong@kingcounty.gov Synopsis King County is soliciting proposals from interested and qualified suppliers to provide hauling services for biosolids, grit, screenings, and liquid wastewater residuals. To attend the optional site visits on February 9, 2026, at 9:00 a.m. PT (South Treatment Plant) and February 11, 2026, at 2:00 p.m. PT (Loop Vehicle Maintenance Facility), see information in the RFP document. Addendum Description Addendum 1 has been issued. Suppliers must acknowledge all addenda before submitting a response. If a supplier has already submitted a response, they MUST log into the E-Procurement Supplier Portal, acknowledge the addendum, and resubmit. Attachments KC001580-addendum 1-documents.zip (924.8 KB) KC001580-rfp-documents.zip (10.56 MB) Open Date 1/30/26 07:00:00 AM Close Date 3/2/26 02:00:59 PM Posting Date 2/18/26 Additional Information KC Solicitation NAICS Code(s) 484110;484121;484122;484220;484230 Small Business Requirements Apply? Yes Department NATURAL RESOURCES AND PARKS Division WASTEWATER TREATMENT
	O K

Commodity Codes

• NAICS 484220Specialized Freight (except Used Goods) Trucking, Local
• NAICS 562111Solid Waste Collection

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