June 7, 2001August 2, 2026

EXH AR017497: Email Chain — Acceptable Fill Criteria Language for Draft 401 Certification, Sea-Tac Master Plan Improvements

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Email chain among Craig Thompson, Kevin Fitzpatrick, Chung Yee, Peter Kmet, Ann Kenny, and Ching-Pi Wang of Ecology NWRO Water Quality Program regarding acceptable fill criteria language for the draft 401 Water Quality Certification for the Sea-Tac Master Plan Improvements project. Discusses review of previous clean fill draft language, response to Pete Kmet’s comments and concerns, and incorporation of fill quality and placement conditions from the US Fish & Wildlife Service Biological Opinion on the Sea-Tac Master Plan Improvements project. References MTCA regulations, TCP policy, and clean fill criteria. Marked as deliberative document exempt from public disclosure. AR 017497.

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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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