Updated May 2, 2018

Environmental Services is continuing construction on the Powell Sewer Repair Project in your neighborhood.  This project will replace and repair aging public sewer pipe ranging from 60 to 104 years old. Repairing and replacing aging sewer pipes protects water quality, public health and the environment.

Construction Schedule

Over the next three to four weeks, crews will be using open trench construction to extend the pubic sewer at SE 70th Avenue and Mall Street and at SE 54^th Avenue and Lafayette Street. 

• After completing pipe installation, crews will patch trenches used for construction with temporary pavement. Permanent patching will be scheduled after quality control tests have been performed and paving crews become available. 

Crews are repairing public lateral sewer pipe connections to homes in multiple locations throughout the project area using Cured-in-Place Pipe-Lining (CIPP).

• Main sewer pipe repairs using CIPP are also scheduled for May, but may be postponed for additional preparation.
• Work in most locations are expected to take one to two days. More time may be required where spot repairs are needed or additional work is identified.
• Work in most locations is expected to take one to two days. More time may be required where spot repairs are needed or additional work is identified.
• The map below shows locations where CIPP lining will occur in May.

More about Trenchless Sewer Construction

Sewer construction to date has focused on replacing and repairing sewer pipes using methods involving excavation. Environmental Services is now preparing for additional sewer repairs in your neighborhood in 2018, which will mainly use a construction method called Cured-in-Place Pipe-Lining (CIPP).

Cured-in-Place Pipe-Lining (CIPP)

CIPP lining is a trenchless method that requires little or no digging and significantly less time to complete.  Work crews access the sewer from manholes to insert a flexible liner inside the old pipe. The liner is inflated with air and exposed to ultraviolet light (UV) to gradually cure and harden the liner. As the liner hardens, it forms a rigid, smooth surface that seals cracks and restores the pipe to near-new condition. For more details about CIPP, visit www.portlandoregon.gov/bes/pipelining. 

2018 CIPP Lining Work Schedule

The Powell CIPP lining work is scheduled to begin this spring and all repairs are expected to be complete by winter 2018. Work in most locations is expected to take one to two days. More time may be required where spot repairs are needed or additional work is identified.

CIPP lining is highly weather dependent. For this reason, the contractor has been given a large window to complete lining repairs in your neighborhood.  CIPP lining activity will be low during wet months and increase during dry months. Residents near each location will be notified in advance of work.

For More Information

Contact Matt Gough 503-823-5352.

Please let us know if you have concerns such as business operations, disability issues or medical or business deliveries. As always, we’ll strive to provide quick response to your concerns, minimal disruption of your residence or commercial business, and open communication with you throughout the project.