At the intersection of Third and Wiconisco Streets, in a permitted MS4 area, CRW O&M staff have identified a diversion manhole that allows sanitary sewage and stormwater to comingle. In response, CRW has conducted a comprehensive CCTV investigation of the Wiconisco Street area. Based on a review of the CCTV data and further design discussions, CRW is preparing a plan to separate the storm and sewer flow for this area.
Remediation for discharge issue at 3rd and Wconisco Street within the Combined Sewer System. CSO-049 and SWOUT-000048: Separation of commingled combined sewer and separate storm sewer infrastructure at and upstream of 3rd and Wiconisco Street. High priority: The issue has been noted in Annual Collection System Inspection and requires remediation in the short term.
Design and construction of sewer separation measures in the three parallel trunk sewers in the Wiconisco Street Area to:
• Removing (or confirming the lack thereof) any sanitary connections from the separate storm trunk sewer and rerouting to the separate sanitary trunk sewer;
• Removing any stormwater connections from the separate sanitary and combined trunk sewers.
Once the proposed changes are implemented, the storm trunk sewer will function as the MS4 system (SWOUT-000048), and the sanitary and formerly “combined” trunk sewers will be exclusively sanitary flow (possibly with some minor residual stormwater flow).
The project will be funded by PayGo.