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Jack’s Run Comprehensive Sewershed-wide
Wet Weather Control
Communities Involved: Pittsburgh Water & Sewer Authority, Ross Township,
Bellevue Borough
Project Goal: The project will demonstrate how municipalities within a watershed should work outside of traditional municipal boundaries to achieve a common goal as a watershed group and coordinate their efforts with the regional sewer authority to develop and implement a long-term wet weather control plan to meet the requirements of the National CSO Control Policy and the evolving SSO policy and regulations.
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Location of stream inflow into combined sewer
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Project Summary: The project will involve inter-municipal and inter-agency cooperation between the watershed communities with trunk sewers in the stream channel, Bellevue Borough, Ross Township, the City of Pittsburgh, the Pittsburgh Water and Sewer Authority (PWSA) and the Allegheny County Sanitary Authority. The project will reduce groundwater infiltration (GWI) and rainfall dependent infiltration and inflow (RDII) from the portions of the Bellevue Borough and Ross Township trunk sewers that extend along the stream channel. The project will seal open joints and restore the integrity of the trunk sewers to significantly reduce extraneous flow during both dry and wet weather conditions. Wherever feasible, the municipal trunk sewers will be rehabilitated using trenchless technologies to minimize the disruption of the stream channel during rehabilitation construction and provide a least-cost solution. The project will eliminate the variable treatment costs associated with treating the dry and wet weather flow conveyed from the municipal trunk sewers to the ALCOSAN wastewater treatment plant. The project will quantify and characterize the costs and benefits of removing stream flow infiltration from the two municipal trunk sewers that extend along the channel. The project will identify and quantify residual I/I within Bellevue and Ross collector systems so that a specific work plan can be developed to remove additional extraneous flow from the municipal sewer system. The proposed demonstration project will be integrated into the work efforts being conducted by ALCOSAN within the Jack’s Run watershed. Dry and wet weather stream flows that are currently conveyed through the municipal sewers will be removed and valuable conveyance and treatment capacities will be restored. The frequency, duration and volume of CSO discharges to Jack’s Run will be reduced.
Total Cost: $6,026,366
3 Rivers Wet Weather Grant Award: $1,917,636
Start Date: August 2002
Estimated Completion Date: 2006
Project Progress: Phase 1 of the work on the Ross and Bellevue sections is underway.
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