Green Stormwater Infrastructure and Source Controls Program
INDUSTRY:
Water and Sewer
SERVICES:
Civil
LOCATION:
Pittsburgh, PA
CLIENT:
Allegheny County Sanitary Authority
The objectives of the Green Stormwater Infrastructure (GSI) and Source Controls Program are to support the execution of the Green Revitalization of Our Waterways (GROW) program, develop a coordinated approach to stormwater management across the service area, and manage ALCOSAN’s on-call consultants to implement GSI projects. As a subconsultant to ALCOSAN’s Green Infrastructure Program Manager Jacobs, Sci-Tek provided engineering support, assistance in writing RFPs and white papers, and document control and management for on call GSI design consultants.
Project tasks have included involvement with Direct Stream Inflow Removal (DSIR) sites. DSIR is a cost-efficient source control management strategy that may provide effective overflow reduction, restore natural drainage systems, increase capacity of the regional collection and treatments system, and reduce inflow of sediments and maintenance requirements to the regional conveyance system. For this project, Sci-Tek provided the following services:
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Performed a sewershed level desktop study to identify potential Direct Stream Inflow (DSI) DSI sites within ALCOSAN’s service area.
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Provided engineering support and review of the DSIR Feasibility Study Report at 30%, 60% and 100%. This study evaluated fifteen direct stream inflow locations where runoff was entering the combined sewer system. Six DSI locations were recommended to move to design by means of new pipe conveyance and outfalls to streams/rivers and one location was recommended to move to design by means of a GSI Project.