1120 SW 5th Ave, Suite 613, Portland, OR 97204
The City of Portland’s Bureau of Environmental Services is continuing our work to repair and replace critical sewer and stormwater infrastructure. Environmental Services will continue to provide information and updates on construction schedules and activities during the COVID-19 emergency.
Environmental Services – your sewer and stormwater utility – is designing a project to repair 623 feet of deteriorating brick sewer pipe under North Delaware Avenue between North Buffalo Street and North Lombard Street, and a small section of sewer pipe under North Rosa Parks Way at North Delaware Avenue. The project will also repair or replace public sewer connections for 19 properties.
This project will reduce the possibility of costly breaks, leaks, blockages and sewage releases to buildings, streets, streams, and rivers.
Construction is anticipated to begin in later summer or early fall 2020 and take about 3 months to complete. The exact start date is not known at this time, but the city’s contractor will provide notice to adjacent properties one to two weeks before construction begins.
This project will include both trenchless and trench excavation construction methods:
Go to www.portlandoregon.gov/bes/constructionmethods to learn more.
Most work will be completed during regular work hours from 7 a.m. to 6 p.m. Monday through Friday, and Saturdays as needed. However, crews will need to work up to three night shifts in order to complete main sewer pipe repairs using CIPP.
During CIPP, crews insert a flexible liner inside the old pipe. The liner is inflated to press the outer portion firmly against the inside wall of the old pipe. The liner is exposed to heat or ultraviolet light (UV) to “cure” the pipe. During curing, the liner gradually hardens against the inside of the old pipe forming a rigid, smooth surface that seals cracks and restores the old pipe to near-new condition.
Due to the large diameter of the pipe being repaired near you, it will take about 16 hours or more to complete the CIPP process, allow the liner to fully cure, and to clean up. This will require working from morning into the evening and possibly overnight. Equipment that will generate noise in the evening and at night includes sewer cleaning trucks, refrigeration trucks that store the liner, compressors, light trucks, generators, pumps, and ventilation fans. Work after dark will require lighting of the work zone.
Contact Matt Gough by email or phone 503-823-5352. In your email and voicemail messages, please provide your name, property address, and the project name (Delaware).