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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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  • May 14 2026 advisory council meeting agenda and materials pdf
    2026-05-14

    PSCAA Advisory Council Meeting

    Call to Order – Land Acknowledgement 9:00 – 9:05 Land acknowledgement recognizing Coast Salish people and traditional lands I. Early Morning: Alignment & Assessment A. Approval of March 11, 2026 Minutes 9:05 – 9:30 B. Introductions and Setting Goals and Norms for Retreat 9:05 – 9:30 II. New Business A. Strategic Plan Third Annual Report
    CategoriesEvents TagsAdvisory Committees, PSCAA, strategic plan
  • 2026-05-14

    PSCAA Advisory council meeting agenda

    Advisory Council meeting agenda for May 14, 2026, including land acknowledgement, approval of March minutes, strategic plan updates, and discussion of council roles in supporting strategic plan delivery. The meeting includes alignment and assessment activities followed by new business items.
    CategoriesMeetings TagsAdvisory Committees, PSCAA, strategic planFolderPSCAA
  • 690630597 1320385723523119 4304153053708138093 n 6

    PSCAA AQI Index

    An Air Quality Index (AQI) reference table published by the Puget Sound Clean Air Agency, showing four levels of concern (Good 0-50, Moderate 51-100, Unhealthy for Sensitive Groups 101-150, and Unhealthy 151-200) with corresponding descriptions and public health recommendations. The agency's logo is visible in the lower right corner.
    TagsAir Quality Monitors, PSCAAFolderPSCAA
  • 2025-12-01

    Puget Sound Region Final Comprehensive Climate Action Plan

    The Puget Sound Region Final Comprehensive Climate Action Plan, published December 1, 2025 by the Puget Sound Clean Air Agency, outlines greenhouse gas reduction strategies for King, Kitsap, Pierce, and Snohomish Counties in the Seattle-Tacoma-Bellevue metropolitan area. The plan covers six sectors—Built Environment, Transportation, Municipal Solid Waste and Wastewater, Natural and Working Lands, Refrigerants, and Consumption—with goals, emission projections, and workforce planning analysis. Note that this document focuses on regional climate and air quality policy rather than Sea-Tac Airport noise regulations specifically.
    TagsClimate, Environmental Protection Agency, King County, PSCAAFolderPSCAA
  • 2025-12-01

    2025 Report: Overburdened Communities Highly Impacted by Air Pollution

    A report by the Washington State Department of Ecology’s Air Quality Program examining overburdened communities that are highly impacted by air pollution. The document includes publication information, contact details for regional offices, and ADA accessibility information.
    TagsAir Quality Monitors, Environment, Environmental Impact Statement, PSCAAFolderEcology
  • 2025-09-16

    Air Quality Monitor Site Visit

    Progress towards the first aviation air quality network in the nation SeaTac: State and local officials from Puget Sound Clean Air Agency (PSCAA) and Des Moines gathered today with researchers from University of Washington Department of Occupation and Environmental Health Sciences (UWDEOHS) at Sunset Park to learn about the latest PSCAA Air monitoring site, and
    CategoriesNews Stories TagsAir Quality Monitors, City Of Des Moines, PSCAA, UWDEOHS
  • 2025-09-15

    Puget Sound Clean Air Agency Monitoring Site Tour: Agenda and Overview

    This document presents materials from a Puget Sound Clean Air Agency Monitoring Site Tour held in September 2025, covering the agency's mission to protect air quality across King, Pierce, Snohomish, and Kitsap counties. It outlines key programs including climate action planning, wood stove replacement, and diesel emissions reduction, with a focus on fine particulate matter (PM2.5), which accounts for 90% of cardiac and respiratory health risk from air pollution in the region. Note: this document relates to regional air quality monitoring and does not contain information about Sea-Tac Airport noise policy.
    TagsAir Quality Monitors, community engagement, PM25, PSCAA, Ultrafine ParticulatesFolderPSCAA
  • 2025-06-01

    2025 Ambient Air Monitoring Network Plan

    A network plan for ambient air monitoring by the Air Quality Program of the Washington State Department of Ecology. The document outlines contact information, regional office structure, and accessibility policies for the department’s air quality monitoring initiatives.
    TagsAir Quality Monitors, Ecology, PSCAA, State of Washington, Washington State Department Of HealthFolderEcology
  • 2025-05-14

    Puget Sound Clean Air Agency Advisory Council Meeting Agenda and Minutes — May 14, 2025

    This document contains meeting materials for the Puget Sound Clean Air Agency's Advisory Council, including an agenda for their May 14, 2025 virtual meeting and minutes from their March 12, 2025 hybrid meeting in Seattle. The May agenda covers topics such as community engagement events, strategic plan updates, and alternatives to outdoor burning. Note that this document relates to regional air quality governance and does not contain content specifically pertaining to Sea-Tac Airport noise policy.
    CategoriesMeetings TagsAdvisory Committees, community engagement, PSCAA, strategic planFolderPSCAA
  • PSCAA 10th and Weller Air Quality Monitoring Site — May 6, 2025, 22:02:51

    A sign mounted on a chain-link fence identifies this as the Seattle 19th & Weller Air Monitoring Station, operated by the Washington Department of Ecology and the Puget Sound Clean Air Agency in cooperation with the EPA. The sign explains that the station monitors nitrogen dioxide, carbon monoxide, and fine particle pollution near vehicle traffic, with data accessible at http://tinyurl.com/WellerAirMonitor.
    TagsAir Quality Monitors, King County, PSCAAFolder10th and Weller AQM

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Upcoming Events

  • Stay Grounded Event: Night trains, not night planes!
    Add to CalendarMSunday Sep 13: 12:00am
    Ntnnp social media3

    For the past two years, more than 220 initiatives from 15 countries have declared September 13th as the International day for the ban of night flights at airports. In parallel, activists across Europe have been gathering for pyjama parties for night trains – coordinated in 2024 and 2025 by Back on Track and Stay Grounded.

    [...]
  • 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

    [...]

[See all...]


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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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