May 1, 2001August 2, 2026

EXH AR050379: Wetland Photographs and Maps — Master Plan Update Improvements, Seattle-Tacoma International Airport

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Wetland photographs and maps prepared by Parametrix, Inc. for the Port Of Seattle, documenting wetlands and other Waters of the U.S. in the Miller Creek Basin near Seattle-Tacoma International Airport (STIA) as part of the Master Plan Update Improvements. AR 050379–050381. Includes photo point map showing delineated wetlands verified and not verified by ACOE (Army Corps of Engineers), water features, streams, wetland numbers, and camera locations. Key features identified include Lora Lake, Lake Reba, Miller Creek Detention Facility, Walker Creek, Des Moines Memorial Drive S, and numbered wetland units (FW, R, A, W series). Updated GIS coverage 11/30/00, referencing Port of Seattle Wetland Delineation Report/206-2012-00/01(41).

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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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