Privately Funded
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Publicly Funded
Addenda Available
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Published July 10, 2025 at 8:00 PM
Updated July 11, 2025
Renovation of a water / sewer project in Portland, Oregon. Completed plans call for the renovation of a water / sewer project.
The Digesters 1–4 Upgrade at the Columbia Boulevard Wastewater Treatment Plant (CBWTP) in Portland, OR, is part of the broader Secondary Treatment Expansion Program (STEP)—the largest upgrade to the facility since the 1970s. The new facility will feature advanced biosolids processing technologies, increasing capacity and efficiency to meet growing demand. The project also includes: Two new 150-foot diameter secondary clarifiers (operational since December 2024) Restoration of eight aeration basins A new multi-use building for staff and operations Project is included in the 2024-2025 capital program, as of July 10, 2025, project is under construction and expected completion in 2027. *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.
Under Construction
Water / Sewer
$17,890,000.00
Public - City
Renovation
Plans and Specifications are not available for this project. If that changes, they will be made available here.
Trades Specified
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July 1, 2024
5001 N Columbia Blvd, Portland, OR
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