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STNI
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.

TagEcology(27)

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  • 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 Justice
  • 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, Ozone
  • 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, Washington State, Washington State Department Of Health
  • 2024-10-24

    Toxics in firefighting law

    Final AFFF EIS published   The final AFFF environmental impact statement (EIS) is published. The EIS is based on feedback received during a public comment period on the draft EIS, which assessed disposal options for an AFFF collection and disposal program.     In 2018, Washington passed the Firefighting Agents and Equipment law (Chapter 70A.400 RCW). This law does the following: Restricts
    CategoriesFrom The Web TagsEcology, PFAS
  • Air Quality Monitor Jay Inslee Ecology Jefferson

    Gov. Jay Inslee, right, speaks with Greg Crider, an air monitoring scientist with the Department of Ecology, as he visits the Jefferson Park-Beacon Hill Air Monitoring Station in Seattle on Tuesday. (Karen Ducey / The Seattle Times)
    TagsAir Quality Monitors, Beacon Hill, Ecology, Jay Inslee
  • Ecology Shoreline Photo Viewer

    CategoriesResources TagsEcology
  • MOA Air Quality Monitoring Program Activities Relating To The Sea-Tac Airport Vicinity October 15, 1996

    TagsAir Quality Monitors, Ecology, EIS, PSAPCA, Puget Sound Air Pollution Control Agency, Third Runway
  • Identifying Overburdened Communities

    Introduction The Climate Commitment Act requires Ecology to create a Cap & Invest program to lower greenhouse gas emissions across the state. Additionally, the  Climate Commitment Act  requires us to identify “ overburdened communities  highly impacted by air pollution,” and make sure that this program reduces a class of pollutants called  “criteria” air pollutants , as well
    CategoriesFrom The Web TagsEcology, pollution
  • Washington Air Monitoring Network: Air Quality Program

    Washington State Department of Ecology
    CategoriesResources TagsAir Quality Monitors, Ecology, PM25
  • Results from soil contamination study of King County

    Tacoma Smelter Plume.Arsenic and lead levels are considered to be of concern, not an emergency.
    TagsArsenic, Ecology, King County, King County Public Health, soil, Tacoma Smelter PlumeStudy TopicsEnvironment

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Upcoming Events

  • Port of Seattle Commission Meeting – Resolution No. 3848
    Add to CalendarMTuesday Apr 28: 12:00am
    Port of Seattle

    Agenda Item 10b Resolution No. 3848: Port of Seattle Participation in City of Bellevue Tax Increment Area Approval of the Port’s participation in the city of Bellevue’s tax increment area, as authorized under RCW 39.114.020. Key Points: Authorization for City of Bellevue to enact increment area up to $500,000,000 in combined assessed valuation if connected

    [...]
  • Port of Seattle Regular Commission Meeting April 28, 2026
    Add to CalendarMTuesday Apr 28: 12:00pm
    17801 International Blvd, Seattle, WA 98158
    2026 04 28 RM Packet Pdf 1

    # New Business Items
    **Order No. 2026-04:** Directs Executive Director to explore a program facilitating secure area access for union business requirements at Seattle-Tacoma International Airport.

    **Resolution No. 3848:** Approves Port's participation in City of Bellevue's Tax Increment Area.

    **Fishermen's Terminal C-15 Building Improvements:** Authorization for Executive Director to approve funding to advertise and execute a major public works construction contract for project completion.

    [...]
  • StART (SEA Stakeholder Advisory Round Table) Meeting
    Add to CalendarMWednesday Apr 29, 5:00pm - 7:00pm
    Zoom Webinar
    Start Meetingagenda 2026429 Pdf 1

    - **SAMP Environmental Review**: Detailed comparison between SEPA Environmental Impact Statement and NEPA Environmental Assessment processes for Near-Term Projects
    - **Community Roundtable Updates**: Progress report on airport stakeholder engagement initiatives
    - **Next Steps**: Implementation timeline for environmental review findings

    **Notable Action Item:**
    Public comment period opened for stakeholder input on airport development plans.

    [...]

[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!

This is the first study to combine a one-year mobile monitoring campaign with PMF (Positive Matrix Factorization) analysis to simultaneously estimate source-specific air pollution exposures and emission factors of different vehicle types. This methodology can be extended to other metropolitan areas.
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