Preface and summary of themes in comparison matrix

The Burien Quiet Skies coalition compiled this 2019 document comparing FAA and Port of Seattle noise abatement commitments against actual progress, revealing decades of unmet promises dating back to 1985. Key concerns include hundreds of homes left uninsulated or poorly insulated, a 12-year gap in required noise modeling data, and noise levels in some Burien neighborhoods now exceeding the 65 dB threshold that triggers mitigation eligibility. The document calls on the FAA to hold the Port of Seattle accountable for failing to implement long-recommended noise reduction measures and for significantly underestimating flight operations and their impact on surrounding communities.

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The Burien Quiet Skies coalition compiled a comparison matrix examining Sea-Tac Airport’s compliance with FAA Part 150 regulations, comparing the FAA’s 2013-2018 Record of Approval with the 1996 Expert Arbitration Panel’s findings on noise abatement and mitigation. The document raises concerns about the Port of Seattle’s slow implementation of noise mitigation measures, outdated noise contours, a twelve-year gap in noise modeling data, and the failure to construct a Ground Run-Up Enclosure despite recommendations in multiple Part 150 studies. It calls for meaningful oversight and environmental justice action for South King County communities impacted by Sea-Tac Airport noise and emissions.

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