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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.

TagEnvironmental Justice(99)

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  • 2026-08-20

    Comments on the Sea-Tac Airport Master Plan EIS Due August 20, 2026

    A concerned resident living near Sea-Tac Airport submitted formal comments arguing that the airport's Master Plan Environmental Impact Statement (EIS) is deeply flawed, citing inconsistent data, outdated figures, lack of cumulative impact analysis, and poor document organization across its 6,000 pages. The commenter contends that the EIS fragments project reviews to minimize apparent harm, uses selectively chosen baselines to downplay environmental and health impacts on surrounding communities, and fails to address a full build-out scenario. The primary demand is that the EIS be completely redone with transparent assumptions, holistic cumulative impact analysis, up-to-date data, and accessible cross-referenced documentation.
    TagsEnvironmental Impact Statement, Environmental Justice, Fred Felleman, SAMP, Sea-Tac AirportFolderComments
  • Appendix k children8217s environmental health and safety risks socioeconomics and environmental justice NEPA final ea and SEPA page 124

    Appendix K SEPA Environmental Justice Disparities Map page 124

    Figure 5-1 from a SEPA Environmental Justice Memorandum prepared by Landrum and Brown (document no. 553-2912-002, dated April 2026) maps Washington Department of Health Environmental Health Disparities Index scores across census tracts in the Sea-Tac Airport vicinity, including Seattle, Tukwila, Burien, SeaTac, Renton, Kent, and Des Moines. The map delineates four overlapping study areas—General Study Area, Surface Transportation Study Area, Air Dispersion Study Area, and Noise Study Area (65 dB contour)—over a background showing health disparity rankings ranging from 1–5 (Low) to 10 (High), with most tracts in the project vicinity ranked 9–10.
    TagsEnvironmental Justice, Landrum & Brown, Map, NEPA, SAMP, SEPA, Sustainable Airport Master Plan, Washington State Department Of HealthFolderAppendices
  • 2026-08-07

    City of Tukwila Letter to Port Of Seattle on SEPA SAMP Near-Term Projects Draft EIS

    Letter dated August 7, 2026 from Tukwila Mayor Thomas McLeod to Steve Rybolt, Senior Environmental Program Manager at Port Of Seattle, regarding the SEPA Sustainable Airport Master Plan (SAMP) Near-Term Projects Draft EIS. The City of Tukwila raises concerns that the 3,692-acre General Study Area (GSA) is too geographically limited to capture full impacts of
    TagsEnvironmental Justice, Port Of Seattle, SAMP, SEPA, TukwilaFolderTukwila
  • 2026-04-01

    2030 climate action plan

    The City of Boston’s 2030 Climate Action Plan outlines strategies to achieve carbon neutrality by 2050, improve climate resilience, and advance environmental justice. The plan integrates greenhouse gas reduction and resilience measures while targeting health, justice, and quality-of-life outcomes for Boston residents.
    TagsClean Air Act, Climate, community engagement, Environmental JusticeFolderBoston/Logan
  • 2026 04 21 at 11 18 29 Ejscreen
    2026-02-19

    When Federal environmental maps go dark

    The benefits and consequences for airport communities In January 2025, the Trump administration began removing content from federal websites following Executive Order 14151. The order directed all government agencies to terminate DEI and environmental justice–related programs. These include environmental justice and climate mapping using a nationally consistent dataset for evaluating the socioeconomic impacts of airports.
    CategoriesChange The Culture, News Stories TagsEnvironmental Justice, Executive Orders, Map
  • Ejscreen

    EJScreen Environmental Justice Screening and Mapping Tool (Version 2.3)

    This is an 1unofficial copy of EJScreen hosted by the Public Environmental Data Partners. Some links and text may incorrectly suggest that this site is affiliated with the US Government. The EJScreen Tool was an EPA web application taken down in January of 2025 as part of Executive Order 14151. It was described as “an
    CategoriesFrom The Web TagsEJScreen, Environmental Justice, EPA, Executive Orders, Map
  • 2025-12-01

    South King County Community 2025 Environmental Justice Report

    An environmental justice report by the Washington State Department of Ecology’s Air Quality Program analyzing air pollution impacts in South King County communities. The report provides demographic data, air quality information, and health impact assessments for overburdened communities highly impacted by air pollution.
    TagsEcology, Environmental Justice, OzoneFolderEcology
  • 2025-12-01

    South Seattle Community 2025 Environmental Justice Report

    A community report from the Washington State Department of Ecology providing information about air quality, demographic data, greenhouse gas emissions, and health impacts for the South Seattle community. The report identifies the community as overburdened and highly impacted by air pollution based on screening criteria.
    TagsEcology, Environmental JusticeFolderEcology
  • 2025-10-14

    Final EA Impact Classification Chart

    A slide titled 'In the FINAL EA, A Few Items Changed' presents a tiered matrix of environmental impact categories ranging from 'Significant impacts requiring mitigation' down to 'Not present.' Notable changes shown include 'Climate' being struck through and replaced with 'Greenhouse Gas Emissions,' and 'Environmental Justice' similarly struck through within the Socioeconomic category, indicating terminology revisions between draft and final Environmental Assessment versions.
    Tagsenvironmental assessment, Environmental Justice, NEPA, Port Of Seattle CommissionFolderCommission
  • 2025-09-01

    Appendix K: Children’s Environmental Health and Safety Risks, Socioeconomics, and Environmental Justice (NEPA Final EA and SEPA)

    Appendix K of this environmental review examines socioeconomic conditions, environmental justice, and children's health and safety risks in the area surrounding the proposed project. It finds that 23.3% of the population in the study area is under 18—higher than both King County and statewide averages—and identifies two schools within the project boundary that could expose children to environmental health risks. The appendix also includes an economic impact analysis for the Northwest Seaport Alliance and a separate environmental justice memorandum prepared under Washington State's environmental review process.
    TagsEconomic Impacts, Environmental Justice, NEPA, SAMP, SEPA, Socioeconomic Impacts, Studies, Sustainable Airport Master PlanFolderAppendicesStudy TopicsEconomics, Socioeconomics

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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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