August 15, 2001August 2, 2026

EXH AR051053: Final Draft Conceptual Borrow Material Development and Reclamation Plan, Borrow Areas 3 and 4, Sea-Tac Airport

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Hart Crowser prepared this Final Draft Conceptual Borrow Material Development and Reclamation Plan for Borrow Areas 3 and 4 at Sea-Tac International Airport, City of SeaTac, Washington, for the Port Of Seattle, dated August 15, 2001 (project number 4978-65). The plan covers site preparation, excavation practices, reclamation, revegetation, weed control, stormwater management, and wetland protection including Des Moines Creek haul route crossing. Topics include site soils and geology, hydrology, perched water-bearing zones, shallow regional aquifer, wetlands mapping, NPDES stormwater discharge monitoring, and concurrent and final reclamation plans over a two-year operation period in connection with the Sea-Tac Master Plan Update EIS process.

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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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