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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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  • 2024-03-07

    Engrossed Substitute Senate Bill 5950: Washington State Fiscal Matters Appropriations Act, 2024

    Engrossed Substitute Senate Bill 5950, passed by the Washington State Legislature on March 7, 2024, is a fiscal appropriations bill that adopts a state budget for the biennium running from July 1, 2023, through June 30, 2025. The bill authorizes spending from various state funds for agency salaries, wages, and other specified purposes, while amending several existing statutes related to financial management. Note: This bill addresses general state fiscal matters and does not contain provisions specifically related to Sea-Tac Airport noise policy.
    CategoriesLegislation TagsBudget, Legislation, Port Package Program Updates, SB5955, state legislature, State of Washington, UWDEOHS, Washington State LegislatureFolderSB5955
  • ANES 2023 Program Information

    Adapting for Tomorrow, Today While climate change is an urgent challenge for every sector, forcing businesses and people to rethink their actions, the airline industry and affected communities are also facing even deeper challenges in attempting to alleviate continued noise, health and climate change impacts. This year’s sessions will take a deep dive into how aviation noise and emissions assessments
    CategoriesFrom The Web TagsANES, Aviation Noise & Emissions Symposium, Elena Austin, Tina Orwall, UC Davis, University Of Washington, UWDEOHS
  • 2023-07-10

    Supplemental material: Exposure disparities by income, race and ethnicity, and historic redlining grade in the greater Seattle area for ultrafine particles and other air pollutants

    This environmental health study examines how exposure to ultrafine particles and other air pollutants varies across the greater Seattle area based on income, race and ethnicity, and historical redlining grades assigned by the Home Owners' Loan Corporation (HOLC). Researchers analyzed pollutant concentration data from 2019-2020 alongside census and demographic data to identify disparities between communities. The supplemental materials include statistical tables and scatterplots supporting the main findings on environmental inequality across Seattle neighborhoods.
    TagsAcademic Journals, Environmental Justice, Seattle, Ultrafine Particulates, UWDEOHSFolderHealth
  • UW study shows Seattle’s historically redlined communities have worse air quality

    By Isabella Breda  Seattle Times staff reporter As Seattleites awoke to a hazy concoction of wildfire and Fourth of July firework smoke Wednesday morning, a new study dropped, revealing that some neighborhoods in the city are regularly subject to worse air pollution, reflective of historic racist policies. Those neighborhoods, according to research published Wednesday from the University of Washington,
    CategoriesFrom The Web TagsEnvironment, Seattle Times, UFP, UWDEOHS
  • MOV-UP report vehicle — UCAR atmospheric monitoring Prius

    A white Toyota Prius Hybrid bearing the UCAR (University Corporation for Atmospheric Research) logo on its door, equipped with roof-mounted scientific instrumentation including sensors and probes. The vehicle is numbered 144 and appears to be configured for atmospheric or environmental data collection fieldwork.
    TagsAir Quality Monitors, Atmospheric Science, MOV-UP, Scientific Measurement, UWDEOHSFolderUWDEOHS
  • 2022-10-05

    Atmosphere 2022: UWDEOHS Healthy Air, Healthy Schools

    A study examining the effectiveness of portable HEPA filters in reducing ultrafine particles (UFPs) from aircraft and traffic sources in five schools near Sea-Tac International Airport. The research found that HEPA cleaners significantly reduced indoor UFP concentrations to one-half to one-tenth of outdoor levels. Atmosphere 2022: https://www.mdpi.com/2073-4433/13/10/1623
    TagsAcademic Journals, Atmosphere, indoor air quality, MDPI, UWDEOHSFolderUWDEOHSStudy TopicsAir Quality, Health
  • UWDEOHS-particle deposition

    An educational infographic titled 'Particle Size & Lung Deposition' illustrating how airborne particles of different sizes deposit in various regions of the respiratory tract: particles >10 μm in the nose and throat, 2.5–10 μm in the windpipe and large airways, 0.1–2.5 μm in small airways, and <0.1 μm in small airways and alveolar sacs. The diagram includes an anatomical illustration of the human respiratory system with a magnified inset of alveolar sacs.
    TagsAir Quality Monitors, DEOHS, Health, Ultrafine Particulates, UWDEOHSFolderHealth
  • UWDEOHS-PM particle size

    An educational diagram comparing the sizes of airborne particulate matter categories: PM0.1 (ultrafine particles, 0.1 microns), PM2.5 (combustion particles, organic compounds, metals; <2.5 microns), and PM10 (dust, pollen, mold; <10 microns). These are shown relative to a human hair (50–70 microns in diameter) and fine beach sand (90 microns in diameter).
    TagsDEOHS, Health, PM25, Ultrafine Particulates, UWDEOHSFolderHealth
  • 2022-08-08

    UFP Advisory Group Meeting Minutes: August 8, 2022

    A University of Washington research team presented findings to a community advisory group showing that HEPA air purifiers in classrooms near Sea-Tac Airport reduced ultrafine particle (UFP) levels from 50% down to just 10% of outdoor concentrations. The meeting, held August 8, 2022, also covered a small pilot health study suggesting short-term cardiovascular and respiratory differences in people exposed to aircraft UFPs while walking under flight paths. Participants from government agencies, community organizations, and public health departments discussed next steps including expanded outdoor monitoring, wildfire response planning, and potential new funding through the HEAL Act.
    CategoriesMeetings TagsEdmund Seto, Elena Austin, indoor air quality, MOV-UP, PSCAA, Sea-Tac Airport, Tim Gould, UFP, Ultrafine Particulates, UWDEOHSFolderHealth
  • 2022-02-14

    Characterization of annual average traffic-related air pollution levels (particle number, black carbon, nitrogen dioxide, PM2.5, carbon dioxide) in the greater Seattle area from a year-long mobile monitoring campaign

    Researchers conducted a year-long mobile air quality monitoring campaign across the greater Seattle area, measuring traffic-related pollutants including ultrafine particles, black carbon, nitrogen dioxide, fine particulate matter, and carbon dioxide at 309 locations. The study developed predictive models of annual average pollution levels to support health research on how traffic emissions affect Seattle residents, particularly the elderly. The findings showed strong spatial variation in pollution levels linked to traffic and land use patterns across the region.
    TagsAir Quality Monitors, Health, pollution, UWDEOHSFolderStudies

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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...]


Help study childhood asthma. Get free HEPA filter!

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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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