October 1, 1984August 2, 2026

EXH AR037232: Guidelines for Deriving Numerical Aquatic Site-Specific Water Quality Criteria by Modifying National Criteria

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EPA-600/3-84-099, published October 1984 by the U.S. EPA Environmental Research Laboratory, Duluth, Minnesota. Authored by Anthony R. Carlson, William A. Brungs, Gary A. Chapman, and David J. Hansen from EPA Environmental Research Laboratories in Duluth MN, Narragansett RI, Corvallis OR, and Gulf Breeze FL. Provides protocols for deriving numerical aquatic site-specific water quality criteria by modifying national criteria, accounting for site-specific variations in species composition, physical factors, and chemical water quality variables. Produced by the Office of Research and Development (ORD) to assist states in consistent, cost-effective water quality criteria derivation for wastewater discharge regulatory decision-making.

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As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.

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