Washington Street Combined Sewer Overflow

American Structurepoint has commenced with designing the next phase of the city of Norwalk, Ohio Combined Sewer Overflow (CSO) Program. This is in response to the City addressing the most significant element in their final projects defined in their EPA- approved Long Term Control Plan (LTCP), which is the elimination of CSO #1 on the city’s west side and CSO #2 on the city’s east side. The recommended improvements will include installation of approximately 8,500 lft of 48-inch-diameter relief sewer to transport the peak wet weather flow to the city of Norwalk’s Wastewater Treatment Plant (WWTP). This project included a cost/benefit analysis in the preliminary design phase to determine which construction method (tunneling vs. open cut) for the interceptor sewer would be the more beneficial to the City. The resulting decision had the least impact on the area residents while also controlling costs.