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Published July 16, 2025 at 8:00 PM

Updated July 17, 2025

Site work for a water / sewer project in Seattle, Washington. Design plans call for site work for a water / sewer project.

Update: South Plant Dissolved Air Flotation Tanks Rehabilitation Project is included King County Fiscal Year 2025 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- The project will replace DAFTs 1 through 6 process equipment and covers at the STP. The DAFTs co-thicken primary sludge and waste activated sludge. Work includes performing demolition and replacement of the DAFT metal equipment components with new 316 Stainless Steel equipment, conversion of rail track system to cantilever system, new flat aluminum covers, ventilation system upgrades, access improvements, and pilot testing a sludge blanket level monitoring device. The equipment vendor package will include bridge beams, center column with internal motor, two rake arms, eight skimmer arms, two float boxes, and effluent Launder pipe. As of July 2, 2025, this project is include in the design phase. Construction bidding is expected to take place in the middle of 2026.

Design

Water / Sewer

$34,700,000.00

Public - County

Site Work

Plans and Specifications are not available for this project. If that changes, they will be made available here.

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