What is the purpose of the Custer Avenue CSO Storage & Dechlorination Facility Project?
The Custer Avenue CSO Storage Facility project & Treatment Facility upgrades is one part of a comprehensive plan for long-term control measures to bring the City’s combined sewer system into compliance with water quality standards. This facility is part of storage and treatment alternative that involves capturing and storing overflows from combined sewers that result from rainfall. The overflows are stored in a linear storage facility. When the rainfall is over, the captured CSO volume is conveyed via an existing tunnel to a separate treatment system for removal of pollutants and disinfection before discharge to receiving waters. As parts of the combined sewer system are separated, this same system can be used to treat stormwater runoff from the urban core portion of the CSO area.
