Minutes from a June 28, 1973 Air Transportation Committee meeting on the Sea-Tac Communities Plan, held in Burien, Washington. Representatives from the Port of Seattle, FAA, Highline School District, and local community groups discussed the history of Sea-Tac Airport's expansion, the impact of aircraft noise on nearby schools and neighborhoods, and ongoing efforts to measure and reduce noise exposure. Key topics included new comprehensive noise measurement methods, federal agency roles in noise regulation, and strategies for noise abatement such as modified flight procedures and sound-absorbing materials.

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Minutes from the June 28, 1973 Air Transportation Committee meeting for the Sea-Tac Communities Plan, held in Burien. The meeting covered planning problems from the Port of Seattle’s perspective, aircraft noise impacts on Highline School District buildings, noise measurement methodology, and noise abatement procedures involving HUD, EPA, and FAA.

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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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