Emergency repairs on Terwilliger near SW Bancroft TerraceRead More…
1120 SW 5th Avenue, Suite 1000, Portland, OR 97204
This project improves the performance of the Balch Consolidation Conduit, which Environmental Services completed in 2011 to help control combined sewer overflows to the Willamette River. The 8,500-foot pipeline carries stormwater runoff and sewage to the West Side Big Pipe.
When it rains and stormwater begins draining into the 84-inch diameter conduit, rising water has pushed air through the pipe with enough pressure to move several manhole covers along the pipeline route. This project secures and sealed manholes in three work areas and installed an underground vault to vent air and relieve pressure in the pipeline (see map below). Environmental Services completed the project in December 2013.
Contact Joe Annett at 503-823-2934.