Vernon-Sabin-Alameda North Sewer Repair Project
NOVEMBER 25, 2013
As you know, Environmental Services is working on a project to repair deteriorating sewer pipes in the Vernon, Sabin and Alameda neighborhoods, roughly north of the Alameda Ridge. Sewers in these neighborhoods can be between 90 and 100 years old. The project will improve sewer system performance and add capacity to the collection system.
A project map and more information are available at http://www.portlandoregon.gov/bes/article/384106.
DEVELOPMENTS OF NOTE
- Crews are finalizing work on NE Mason between NE 24th and 32nd place, and along NE 20th near Going and Wygant
- Crews will also be working along NE Skidmore at 32ndplace, NE Mason at 31st, NE Going at 18th, NE Alberta at 32nd place, and NE 24th near Skidmore for a day or two in the next several weeks
- Crews are working on finishing some smaller tasks throughout the project area
- Crews are preparing for the CIPP lining process (see below)
- Crews will be repairing the concrete street on NE 31st at Alberta in the coming weeks, which will result in some temporary road closures
Construction is ongoing. Environmental Services expects to complete the work in early 2014. Work crews are preparing for CIPP lining (see below) to take place in the coming weeks. The lining process will begin the first week of December, and work on the all of the segments will likely take several weeks. Crews will alert neighbors of the CIPP lining in specific areas before it begins.
Once the pipe work is completed, crews will pave and restore streets and prepare to leave the neighborhood. When crews are in a neighborhood for final paving and restoration, there may be road closures and parking restrictions while they install the road surface and let it harden.
The project contractor will repair any damaged curbs or other miscellaneous items near the end of the project timeline.
The city’s contractor will use a trenchless repair method called cured-in-place pipe-lining (CIPP) for some of the work. The CIPP process doesn’t require digging a trench and minimizes construction impacts. Work crews use manholes or other access points to insert a flexible liner inside the old pipe. Hot water or steam pumped into the sewer flattens the lining against the inside of the old pipe. The liner gradually hardens to form a rigid, smooth surface. Construction crews will access the pipe via several temporary construction easements along the project alignment.
You are likely to smell a chemical odor during the CIPP work. The odor is from a chemical called styrene in the resin liner installed inside the pipe. The odor dissipates quickly once installation is complete. The amount of airborne styrene the repair process produces is not a human health risk.
Please see the project map on the project website for specific areas that will be repaired using the CIPP process.
WHAT TO EXPECT DURING CONSTRUCTION
- Construction hours are 7:00 a.m. to 6:00 p.m. Monday through Friday. The contractor may schedule work during the same hours on Saturdays.
- There may be temporary lane restrictions and road closures. You may be delayed traveling into, out of, or through the area while work is ongoing.
- On-street parking in or near the work area is prohibited during work hours. The contractor will post signs with closure information.
- Equipment and materials may be secured and stored on nearby streets overnight.
- You will have sewer service at all times, even when work is near your building.
- Construction will create noise, vibration and dust and may disrupt normal neighborhood activity.
- A city construction inspector will be on-site during work hours, and may be able to assist you with construction concerns. Inspectors typically wear a safety vest and hard hat.
FOR MORE INFORMATION
If you have any questions or comments, please feel free to email me at Rebecca.Tillson@portlandoregon.gov, or head to the project website: portlandoregon.gov/bes/VSA).
Thank you for your patience as we continue working on this important sewer project, and have a very happy Thanksgiving!
Community Outreach and Information
City of Portland Environmental Services
1120 SW 5th Ave, Room 1000, Portland, Oregon 97204
Phone: 503-823-2827 l Cell Phone: 803-823-6615
Working for clean rivers
The Bureau of Environmental Services works with Portland residents and businesses to protect water quality, public health, and the environment through wastewater collection and treatment, sewer construction and maintenance, stormwater management, and stream and watershed restoration. Learn more at www.portlandoregon.gov/bes.