The Benefit of Utilizing Case Specific Modelling and Data to Determine Effluent Limitations

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by Roderick Hoffman, ARCO Alaska Inc, Anchorage, AK, USA,
Noel J. Williams, ARCO Alaska Inc, Anchorage, AK, USA,

Document Type: Proceeding Paper

Part of: Coastal Zone '87

Abstract: This abstract refers to the results of a normal conservative approach to a more realistic, substantiated approach to determining effluent limitations. The new approach was used to establish effluent limitations on total chlorine-produced oxidants (TCPO) concentrations at the Prudhoe Bay Waterflood Seawater Treatment Plant, on the Beaufort Sea coast of Alaska. The approach used incorporated determination of average TCPO concentrations to meet regulatory criteria at the edge of a 'mixing zone'. Averaging pulsed discharges of TCPO, dilution and settling of TCPO attached to particulates resulted in effluent limitations more than seven times those obtained by classic dilution analysis. These higher effluent concentrations still protected marine life outside of the mixing zone.

Subject Headings: Effluents | Data processing | Water treatment plants | Data analysis | Sea water | Water pollution | Model tests | Bays | Chlorine | Dilution | North America | Alaska | Beaufort Sea | United States

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