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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info

Odor Notification

  • Columbia Boulevard Wastewater Treatment Plant

  • Columbia Boulevard Wastewater Treatment Plant Dry weather clarifier odor control and treatment system

  • Portsmouth Ventilation Odor control and treatment facility

  • Influent Pump Station Odor control and treatment system

  • Columbia Boulevard Wastewater Treatment Plant Headworks odor control and treatment system

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Odor Notification Alert: August 17, 2020

 

We are taking final clarifier #5 out of service for inspection, cleaning and repair. The clarifier will be offline from August 17 through September 9 while we are cleaning, inspecting and performing repairs. While we take clarifier #6 out of service, there is a possibility for odors to be produced. While we don’t anticipate these odors to be perceptible outside our campus, this is a possibility until the work is complete. We know these odors can be unpleasant and we make every effort to reduce them.

Odors produced from the collection system and wastewater treatment plant are captured and treated through a variety of processes. Occasionally, maintenance activities will hinder our ability the capture and treat these odors, allowing them to be perceptible in surrounding neighborhoods. Environmental Services issues notification regarding these maintenance projects that may result in odors outside our campus boundaries.

 

Odor Notification Alert: August 14, 2020 update September 2, 2020

 

On August 11 we discovered a sinkhole at the front of the plant. We investigated and determined a sewer line that brings sewage into the plant for treatment has collapsed.  A contractor was brought in under an emergency contract to expedite the repairs. A temporary line was put in on the east side of the campus to convey the sewage from the Inverness Force main to the Columbia Slough Consolidated Conduit and then to the treatment plant. We expect the repair work to take about two months. We will continue to update as we work to repair the line.  

The collapsed line damaged an isolation gate and is allowing odors to be migrate around the collapsed line. The contractor has covered the exposed line to prevent these odors from being released. The line will need to be uncovered to repair the gate and replace the line. During these activities odors can be released into the air without odor treatment. While we don’t expect these odors to be noticeable outside our campus, this is a possibility until the work is complete, especially in warmer temperatures. We know these odors can be unpleasant and we make every effort to reduce them.

Odors produced from the collection system and wastewater treatment plant are captured and treated through a variety of processes. Occasionally, maintenance activities will hinder our ability the capture and treat these odors, allowing them to be perceptible in surrounding neighborhoods. Environmental Services issues notification regarding these maintenance projects that may result in odors outside our campus boundaries.

 

Odor Notification Alert: August 10, 2020

 

We will be preforming maintenance on our electrical switch gear and breakers at the dry weather primary clarifier August 10th to August 12th. The electrical switch gear and breaker work will put mechanical systems at Headworks building out of service. While this work is going on it is possible for odors to be produced. While we don’t anticipate these odors to be perceptible outside our campus, this is a possibility until power is restored. The dates referenced above indicate the maintenance periods. We know these odors can be unpleasant and we make every effort to reduce them.

Odors produced from the collection system and wastewater treatment plant are captured and treated through a variety of processes. Occasionally, maintenance activities will hinder our ability the capture and treat these odors, allowing them to be perceptible in surrounding neighborhoods. Environmental Services issues notification regarding these maintenance projects that may result in odors outside our campus boundaries.

 

How to Report Odors

How to Get Odor Information


Subscribe to odor notification email

Click here to receive odor alerts by email

Go to the online odor report form

Fill out and submit this form online to let us know about odor problems

Tour The Treatment Plant

Request a tour of the Columbia Blvd Wastewater Treatment Plant.