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Declaration by Paul S. Fendt, a stormwater engineer with Parametrix Inc., submitted in the Pollution Control Hearings Board case PCHB 01-133 (Airport Communities Coalition v. Department of Ecology and Port of Seattle). The declaration describes Fendt’s qualifications and provides technical details about stormwater management and low flow mitigation for the Port of Seattle’s Master Plan Update (MPU). It addresses hydrological impacts on Miller Creek, Walker Creek, and Des Moines Creek watersheds from new impervious surface construction at Sea-Tac International Airport, and outlines mitigation measures including 344.1 acre-feet of new stormwater detention storage.

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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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