When it rains, stormwater may pick up and carry pollutants from the street – metals (such as copper and lead), oil, and dirt – into the storm drains. The polluted stormwater then travels through underground pipes and discharges through outfalls to the Columbia Slough. This is one of several Columbia Slough Stormwater Projects with the goal to remove pollutants from stormwater before it enters the slough.
To remove pollutants, engineers are designing an underground stormwater management system that includes a sedimentation maintenance hole and a filter vault. The system is designed to filter stormwater and reduce the amount of pollution entering underground pipes and reaching the slough. These improvements will protect water quality, the community, and the health of the Columbia Slough watershed.
Project Area
The project is located on NE 11th Avenue between Northeast Columbia Boulevard and NE Argyle Drive.
General Schedule
Construction is anticipated to begin June 20, 2024, and will take up to four months to complete.
What's Happening Now
All work is weather-dependent and subject to change.
Week of October 14:
- Crews will complete miscellaneous outstanding items, remove unused materials, clean, and leave the job site.
What to Expect During Construction
Open trench excavation will be used to complete all work. Construction hours are Monday through Friday from 7 a.m. to 6 p.m. Crews may work on some Saturdays if needed.
You can expect the following activities to occur during construction hours:
- Noise, vibration, and dust
- Traffic delays
- Parking restrictions
- Equipment storage overnight
- Continued sewer service during work hours
- Maintained access to your home or business
A brief guide on what you can expect during construction projects conducted by Environmental Services and their contractors can be found at portland.gov/bes/constructionimpacts.
We Want to Hear from You
Environmental Services will inform residents and businesses about project activities and respond to questions and concerns in a timely manner. We encourage you to:
- Visit this project webpage regularly for updates.
- With questions or comments, please contact Matt Gough by email or phone 503-823-5352.
- If you have a question or concern, please be sure to include your name, property address, and project name (Outfall 65) in your voicemail and email so we can provide you more details about what to expect in front of your property.
- If your basement sewer backs up or your property or street floods, please report it immediately to the City’s Maintenance Operations hotline at 503-823-1700. It is staffed 24/7, all hours and all days.
Sign Up for Updates
Sign up for periodic email or text message updates through our free GovDelivery subscription service. These updates are the best way to stay informed about what’s happening and what to expect. You can also sign up for bulletins on other projects and topics.
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This project will help protect the health of the Columbia Slough Watershed.
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