This February 2020 Port of Seattle briefing outlines Sea-Tac Airport's noise mitigation efforts, including abatement measures like the Fly Quiet Program, a network of 24 permanent and 5 portable noise monitors, and community outreach initiatives. The briefing focuses primarily on ongoing and potentially accelerated sound insulation programs designed to reduce aircraft noise impacts on surrounding neighborhoods. Staff recommendations for expanding these programs were also presented to Port commissioners at the meeting.

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A Port of Seattle briefing presented on February 25, 2020, covering airport noise programs including noise abatement, community outreach, noise monitoring, and noise mitigation. The presentation outlines ongoing sound insulation programs, acceleration of those programs, and staff recommendations. Topics include the Fly Quiet Program, engine testing restrictions, permanent and portable noise monitors, and sound insulation and acquisition programs.

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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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