Notes

Declaration of Edward O’Brien, Washington State Department of Ecology Water Quality Program employee since 1979, filed in PCHB No. 01-133 (Airport Communities Coalition v. State of Washington Department of Ecology and Port of Seattle). O’Brien testifies regarding the 1992 Stormwater Management Manual for Puget Sound, the 1999 Draft Manual, the final September 27, 2001 western Washington stormwater manual, and the 1998 King County Surface Water Design Manual. Describes hydrologic impacts of development and impervious surfaces including elevated pollutant concentrations (turbidity, oils, grease), increased peak stormwater flows, reduced groundwater recharge, and decreased summer base flows in surface waters. Quotes King County Design Manual Section 3.1.1 on Horton overland flow, urbanization effects on streams, and stormwater volume increases. NPDES, Water Quality Program, stormwater permits, PCHB No. 01-133.

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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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