October 6, 2000August 2, 2026

EXH AR028995: Sea-Tac Airport Third Runway 401 Permit Negotiations — Final Draft Meeting Notes, October 6, 2000

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Final draft meeting notes prepared by Kate Snider, Floyd & Snider Inc., for Sea-Tac Airport Third Runway 401 Permit negotiations held October 6, 2000. Attendees include Elizabeth Leavitt and Keith Smith (Port Of Seattle), Kelly Whiting (King County), Kevin Fitzpatrick (Department of Ecology), Rick Schaefer (Earth Tech), Paul Fendt and Jim Dexter (Parametrix). Covers technical resolution of Stormwater Master Plan (SMP) issues including detention sizing, basin acreage discrepancies, HSPF and KCRTS modeling, IWS pump station overflow, Walker Creek calibration, Des Moines Creek Basin Plan consistency, filter strip BMPs, SASA facility volumes, SDN1-OFF, SDN-6 Cargo, SDW1B wetland proximity, and King County Reviewer (KCR) comments. Administrative Record numbers AR028995–AR028997, ECY00000846–ECY00000848.

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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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