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STNI

STNISea-Tac Noise.Info

  • Solve for Sea-Tac. Solve for every airport.
  • Since 2016, working to obtain justice for everyone living under the flight path.
  • Less Noise. Cleaner Air. Better Public Health. Compensation.
  • Everything you think you know about the airport is wrong.

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  • 2026-06-08

    Part 150 Study Technical Review Committee Meeting #6

    Presentation slides for the sixth meeting of the Part 150 Study Technical Review Committee (TRC) for Seattle-Tacoma International Airport, held June 8, 2026. The meeting covered potential Noise Compatibility Program (NCP) measures including noise abatement, land use, and program management. The agenda also included a review of the previous meeting summary, project schedule, and future
    TagsLand Use, Part 150, Port Of Seattle, Sea-Tac AirportFolder2024
  • 2026-06-08

    Noise Exposure Map Report: 14 CFR Part 150 Study

    The Port of Seattle submitted this Noise Exposure Map (NEM) Report to the Federal Aviation Administration under 14 CFR Part 150, documenting aircraft noise levels around Seattle-Tacoma International Airport for 2022 (existing conditions) and 2032 (projected future conditions). The report was prepared by Environmental Science Associates and certified by the Port's Director of Aviation Environment and Sustainability on June 26, 2026, confirming that current airport operations remain consistent with the 2022 data. It includes documentation of public and agency consultation, noise contour maps showing areas exposed to DNL 65+ decibel levels, and supporting forecasts of aircraft activity through 2032.
    TagsFAA, Noise Exposure Update, Part 150, Port Of Seattle, Sea-Tac AirportFolderNEM
  • 1 ada updated final sea part150 nem report pdf
    2026-06-08

    Noise Exposure Map Report: 14 CFR Part 150 Study

    The Port of Seattle submitted this Noise Exposure Map (NEM) Report to the Federal Aviation Administration under 14 CFR Part 150, documenting aircraft noise levels around Seattle-Tacoma International Airport for 2022 (existing conditions) and 2032 (projected future conditions). The report was prepared by Environmental Science Associates and certified by the Port's Director of Aviation Environment and Sustainability on June 26, 2026, confirming that current airport operations remain consistent with the 2022 data. It includes documentation of public and agency consultation, noise contour maps showing areas exposed to DNL 65+ decibel levels, and supporting forecasts of aircraft activity through 2032.
    TagsFAA, Noise Exposure Update, Part 150, Port Of Seattle, Sea-Tac AirportFolderNEM
  • Item report 1 pdf
    2026-06-04

    Des Moines City Council – SAMP Update

    Purpose and Recommendation To provide the Council with an update on the status of the Sustainable Airport Master Plan (SAMP) environmental review. Background Federal Aviation Administration (FAA) Approval On September 26, 2025, the FAA completed their National Environmental Policy Act review and approved a Final Environmental Assessment and Finding of No Significant Impact/Record of Decision
    CategoriesEvents TagsCity Of Des Moines, Environmental Impact Statement, FAA, Port Of Seattle, SAMP Draft SEPA EIS
  • 2026 06 04 am packet pdf
    2026-06-04

    Port of Seattle Commission Audit Committee

    Call to Order Approval of Minutes March 19, 2026 External Audits Baker Tilly – 2025 Financial Statement Audit Results Presentation and Report Anna Waldren, Senior Manager Fort Hill – Baggage Optimization Phase III Presentation and Report Doug Plyler, Principal Updates and Approval Glenn Fernandes, Director, Internal Audit Open Issue Status Update 2026 Audit Plan Approval
    CategoriesEvents TagsPort Of Seattle, Port Of Seattle Commission
  • 2026-06-04

    Des Moines City Council (SAMP) update

    The City of Des Moines, WA provided its City Council with an update on the Sustainable Airport Master Plan (SAMP) for Seattle-Tacoma International Airport, following the FAA's September 2025 approval of 31 near-term expansion projects — including 19 new gates, a second terminal, and cargo facilities. The Port of Seattle launched a state-level environmental review (SEPA) in May 2026, releasing a Draft Environmental Impact Statement with a 60-day public comment period. Des Moines is collaborating with the cities of Burien and SeaTac through an Interlocal Agreement to submit coordinated comments, with the final report expected in 2027.
    TagsCity Of Des Moines, Environmental Impact Statement, FAA, Port Of Seattle, SAMP Draft SEPA EISFolderDes Moines
  • 2026-06-04

    Port Of Seattle Commission June 4, 2026 audit committee meeting agenda

    These are the agenda and approved minutes for the Port of Seattle Commission Audit Committee meetings held on June 4, 2026, and March 19, 2026, covering internal and external audit reviews of Port financial and operational matters. Topics include the 2025 financial statement audit, baggage optimization, marine maintenance controls, capital project prioritization, and procurement agreements. This document does not address Sea-Tac Airport noise policy.
    TagsPort Of Seattle, Port Of Seattle CommissionFolderMeetings
  • 2026-05-27

    Highline Forum future ready overview

    Overview presentation for Highline Forum’s Future Ready initiative, outlining Highline Public Schools’ promise that every student is known by name, strength and need, and graduates prepared for the future they choose. Presents four key pillars: Culture of Belonging, Innovative Learning, Bilingual & Biliterate, and Future Ready.
    Tagscommunity engagement, education, Highline Forum, Highline Schools, Port Of Seattle, PresentationFolderHighline Forum 2026
  • 2026-05-27

    Highline Forum Burien Presentation May 27, 2026

    A presentation about Burien for the Highline Forum on May 27, 2026. Describes Burien as a vibrant and creative community incorporated in 1993, with 52,000 residents across 11 square miles, highlighting its diversity, arts and culture focus, and environmental values.
    TagsBurien, community engagement, Highline Forum, Port Of Seattle, PresentationFolderHighline Forum 2026
  • 2026 05 26 rm agenda pdf
    2026-05-26

    Port of Seattle Commission Regular Meeting May 26, 2026 (SAMP/SEPA intro)

    Item 11b is the SAMP/SEPA EIS introduction and presentation
    CategoriesEvents TagsEnvironmental Impact Statement, Port Of Seattle, Port Of Seattle Commission, SAMP, SAMP Draft SEPA EIS, Sustainable Airport Master Plan

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Upcoming Events

  • Burien Airport Committee Meeting September 15, 2026
    Add to CalendarMTuesday Sep 15: 6:00pm
    400 SW 152nd St, Burien, WA 98166
    Burien airport committee 15 sep 2026 agenda pdf pdf

    a) Part 150 Noise Study (Emily Inlow-Hood) — 15 minutes
    b) SAMP Update and Next Steps (Brian Davis and Sarah Moore) — 15 minutes
    c) Legislative Updates — 10 minutes
       • SCA (Sarah Moore)
       • Work with Sen. Orwall (Brian Davis)
    d) StART Reorganization (Jeff Harbaugh and Karen Veloria) — 10 minutes

    [...]

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Issues

Sea-Tac Airport is currently undergoing the largest and longest expansion in its history, collectively known as the Sustainable Airport Master Plan (SAMP). Some of it you can already hear, but you’re probably not aware of what it all means. Here’s what you need to know.
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Read This!

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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