May 25, 2001August 2, 2026

EXH AR029179: 401 Permit Decision-Making Technical Meeting Notes — Sea-Tac Airport Third Runway, May 25, 2001

Notes

Final draft meeting notes from a 401 Permit Decision-Making technical meeting on May 25, 2001, regarding the Sea-Tac International Airport Third Runway project. Prepared by Rachel McCrea of Floyd & Snider Inc. Attendees included Ann Kenny (Dept. of Ecology), Kelly Whiting (King County), Keith Smith (Port of Seattle), Paul Fendt and Tom Atkins (Parametrix). Topics covered: format for final SMP (Stormwater Management Plan) replacement pages, existing SMP text referencing low stream flow impacts and proposed mitigation (Appendix D, Appendix G, Table G-2), Table A-3 Deliverable 5 (yellow) clarification including 154th/156th facility retrofit and SDN2X/4X runway threshold removal, schedule update for deliverables D1–D9 including Miller Creek (D7A), 154th Street (D7B), Infiltration Feasibility (D4B), and dam safety information (D8). Deliverable 7A transitioned from Joe Brascher to Felix Kristanovich. AR029179, ECY00014855.

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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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