Wet Weather Facilities Planning: Upper Monongahela Basin Client: Allegheny County Sanitary Authority Location: Allegheny County, PA The Allegheny County Sanitary Authority (ALCOSAN) entered into a Consent Decree to formalize measures necessary to comply with the Clean Water Act, the Clean Streams Law, the terms of their NPDES Permit, and local Rules and Regulations. In addition, the State and County agencies entered into separate municipal consent orders and agreements with the 83 municipalities serviced by ALCOSAN, including Pittsburgh. Hazen and Sawyer is leading a team of engineers, modelers, specialists, and eight subconsultants to plan facilities to address wet weather issues in the Upper Monongahela drainage basin in Allegheny County, Pennsylvania for ALCOSAN. Project Outcomes and Be

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