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Stantec 2020 Sea-Tac Airport Impact Study: Appendix A, Section 4 – Community Input (pp. 41–43)

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A 2020 study gathered input from 48 community stakeholders near Seattle-Tacoma International Airport, finding that while residents valued the economic benefits, jobs, and convenient access the airport provides, noise and air quality were the top concerns—especially for those living to the south and west under flight paths. Stakeholders raised issues including late-night flights, NextGen procedures concentrating aircraft noise, ultrafine particle pollution, and the limitations of existing noise mitigation programs. Traffic congestion and potential public health impacts from aircraft emissions were also frequently cited challenges.

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Appendix A, Section 4 of the Stantec-authored 2020 study on current and ongoing effects of Seattle-Tacoma International Airport operations, covering community input methodology and findings. Documents 48 stakeholder interviews conducted June–July 2019 across study area cities including SeaTac and Tukwila. Summarizes benefits (economic development, tourism, hotel tax revenue, Westfield Southcenter Mall, Port of Seattle employment, walkable/bikeable terminal access) and top challenges: noise (NextGen procedures, Bombardier Q400 overflights, reverse thrust, late-night cargo flights, maintenance run-ups), air quality (jet fuel residue, UFP, MOV-UP University of Washington study, WHO 2007 particulate matter study), public health (cancer, cardiovascular disease), and mobility/traffic congestion. Notes Sound Transit Light Rail, permit parking programs in SeaTac, and illegal overnight parking. Technical Advisory Committee (TAC) meetings also referenced.

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