March 28, 2001August 2, 2026

401 Permit Decision-Making, Sea-Tac International Airport Third Runway: Draft Meeting Notes, Technical Meeting, March 28, 2001

Notes

Draft meeting notes from a technical meeting on March 28, 2001, regarding the 401 Permit Decision-Making process for the Sea-Tac International Airport Third Runway project. The notes cover King County feedback on Deliverable 2 (Appendix B2), scoping for Deliverables 5 and 6 regarding stormwater management vault feasibility and SMP revisions, and upcoming meeting schedules. Attendees included representatives from the Department of Ecology, Port of Seattle, King County, HNTB, Parametrix, AquaTerra, Foster Wheeler, and Floyd & Snider Inc.

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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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