Heavy Civil GC/CM Services for South Treatment Plant Treatment and Electrical Improvements

King County is seeking a heavy civil general contractor/construction manager to provide preconstruction and construction services for treatment, odor control, and electrical improvements at the South Treatment Plant.

King County > Natural Resources and Parks > Wastewater Treatment Division


General
Open
KC001701
Oct 13, 2026 08:30 PM
Aug 19, 2026 10:44 AM
Small Business
Other (Alternative Procurements)
Local
Ask AI about this solicitation
Contact
jdecoteau@kingcounty.gov
+12064776181
201 South Jackson Street, Seattle, WA, USA
Description

King County is soliciting heavy civil general contractor/construction manager services for the South Treatment Plant Treatment and Electrical Improvements Project. The scope includes both preconstruction and construction services. The project will provide essential upgrades to preliminary treatment, secondary treatment, odor control systems, and electrical systems across the plant. The solicitation identifies NAICS codes 237990, 237110, and 238210, and states that small business requirements apply.

Classification Codes
NAICS237110Water and Sewer Line and Related Structures Construction
PSCY1NDCONSTRUCTION OF SEWAGE AND WASTE FACILITIES
Smart Codes
wastewater treatment upgradeselectrical system improvementsheavy civil construction
Specifications
Service Only
Timeline
Aug 19, 2026-Posting Date
Aug 19, 2026 05:44 PM-Open Date
Oct 13, 2026 08:30 PM-Close Date
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