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Receiving Water Modeling for CSO Investigations in Boston Harbor

by Mitchell Heineman, Camp Dresser & McKee, Inc, United States,
Mary Webb, Camp Dresser & McKee, Inc, United States,
Raymond Walton, Camp Dresser & McKee, Inc, United States,
Brent McCarthy, Camp Dresser & McKee, Inc, United States,



Document Type: Proceeding Paper

Part of: Estuarine and Coastal Modeling

Abstract:

The computer models QUAL2EXP and TEA/ELA were used to model Combined Sewer Overflow (CSO) remediation alternatives in Boston Harbor and its major tributaries. The models were adapted to permit representation of time-varying discharges from CSOs and were interfaced with each other and a regional stormwater and sewer system model (SWMM). The models were calibrated using fecal coliform bacteria distributions under existing conditions, and used to predict contaminant distributions in the receiving waters following construction of a new regional wastewater treatment facility. Predictions of future contaminant distributions were made for the no action alternative, deep storage tunnels, sewer separation and other options. The results were used to forecast expected durations of beach closings, shellfishing restrictions, and other water quality criteria violations.

Subject Headings: Water quality | Computer models | Combined sewers | Water pollution | Ports and harbors | Pollutants | Sewers | Boston | Massachusetts | United States

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