September 28, 2000August 2, 2026

EXH AR051605: Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport, July 1, 1999 through June 30, 2000

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Annual stormwater monitoring report prepared by Scott Tobiason, Environmental Management Specialist, Aviation Environmental Programs, Port Of Seattle, covering Sea-Tac Airport (STIA) for the period July 1, 1999 through June 30, 2000. Report covers STIA storm drainage subbasins, sampling locations, grab and composite sample results for total petroleum hydrocarbons (TPH), fecal coliforms, suspended solids, turbidity, biochemical oxygen demand (BOD5), metals, deicing event samples (ethylene glycol), whole effluent toxicity (WET) samples, source tracing studies, outfall inspections, NPDES stormwater permit compliance, and field quality control. AR 051605.

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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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