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Published August 20, 2025 at 8:00 PM

Updated August 21, 2025

Renovation of a water / sewer project in Portland, Oregon. Completed plans call for the renovation of a water / sewer project.

Columbia Boulevard Wastewater Treatment Plant(CBWTP) Outfall Surge Modifications This project consists of improvements to the CBWTP effluent pipeline ventilation system, air vacuum relief valves, goose-neck pipe risers, and sample vaults to reduce the risk of damage from surge events and effluent overflows. The project also includes scope to complete modifications that create a single point of NPDES permit compliance for CBWTP discharges. Project is included City of Portland - Planning and Sustainability Fiscal Year 2022-2025. As of August 20, 2025, this is part of the Secondary Treatment Expansion Program (STEP) project and is underway. *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

$11,200,000.00

Public - City

Renovation

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

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July 1, 2024

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5001 N Columbia Blvd, Portland, OR

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