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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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  • 2025-05-17

    Guidance Leaflet: PFOA in Fire-Fighting Foams

    EPA Ireland guidance leaflet on PFOA (perfluorooctanoic acid) and PFAS (per- and polyfluoroalkylated substances) in aqueous film-forming foam (AFFF) used in fire suppression systems and handheld fire extinguishers. Covers regulatory controls under the Stockholm Convention and Persistent Organic Pollutants (POPs) Regulation (EU) 2019/1021, including restrictions effective July 4, 2020, January 1, 2023, and July 4,
    CategoriesExplainers, Resources TagsEnvironment, EPA, FactSheet, Fire fighting, PFAS
  • 2025-05-16

    EPA limits Its PFAS drinking water standard to PFOA and PFOS, delays compliance timeline to 2031

    On May 14, 2025, the U.S. Environmental Protection Agency announced via press release that it will reduce the scope of its April 10, 2024 National Primary Drinking Water Regulation to the two most prevalent per- and polyfluoroalkyl (PFAS) compounds, PFOA and PFOS, and extend the compliance timeline for public water systems by two years, from
    CategoriesFrom The Web, News Stories TagsEPA, Kaplan Kirsch Rockwell, PFAS
  • Lee Zeldin, EPA Administrator, Testifying at Congressional Hearing

    TagsEPA, FAA
  • 2025-03-11

    The Supreme Court Holds the Clean Water Act does not Authorize EPA to Include Receiving Water Limitations in San Francisco’s NPDES Permit

    In a decision issued last week, the Supreme Court of the United States held that the United States Environmental Protection Agency (EPA) exceeded its authority by including “receiving water limitations” in a National Pollutant Discharge Elimination System (NPDES) permit, siding with the City and County of San Francisco in City & County of San Francisco
    CategoriesFrom The Web TagsClean Water Act, EPA, Kaplan Kirsch Rockwell, Litigation
  • 2025-02-24

    Trump Administration Environmental-Justice-Related Executive Orders: Potential Implications for EPA Programs

    Download PDF (415KB) | PDF Version History IF12922.5 In January 2025, President Trump issued executive orders (E.O.s) that revoked prior E.O.s, including E.O.s related to environmental justice. Another Trump Administration E.O. directed federal agencies to close environmental justice offices and cease environmental-justice-related programs. These three E.O.s could affect environmental-justice-related programs and activities administered by the
    CategoriesFrom The Web TagsCEQ, Congress.gov, Environmental Justice, EPA, Executive Orders
  • 2025-02-24

    Trump administration environmental-justice-related executive orders: potential implications for EPA programs

    This Congressional Research Service report explains how President Trump's 2025 executive orders revoked earlier Clinton and Biden administration environmental justice policies and directed federal agencies, including the EPA, to close environmental justice offices and end related programs. The report outlines which specific EPA programs and activities may be affected, such as grant programs, screening tools, and interagency councils. It also notes that while the executive orders change agency priorities, they do not override existing federal pollution control laws that Congress has established.
    TagsCEQ, Congressional Research Service, Environmental Justice, EPA, Executive Orders
  • If12922.5 Pdf
    2025-02-24

    Trump administration environmental-justice-related executive orders: potential implications for EPA programs

    This Congressional Research Service report explains how President Trump's 2025 executive orders revoked earlier Clinton and Biden administration environmental justice policies and directed federal agencies, including the EPA, to close environmental justice offices and end related programs. The report outlines which specific EPA programs and activities may be affected, such as grant programs, screening tools, and interagency councils. It also notes that while the executive orders change agency priorities, they do not override existing federal pollution control laws that Congress has established.
    TagsCEQ, Congressional Research Service, Environmental Justice, EPA, Executive Orders
  • 2025-01-14

    Aviation Noise and Emissions Mitigation Act: Fact Sheet

    The Aviation Noise and Emissions Mitigation Act, introduced by Rep. Adam Smith (WA-09), aims to help communities near airports — including those around Sea-Tac — deal with the health risks posed by aviation noise and air pollution. The bill would create two EPA grant programs: one funding research and neighborhood-level monitoring of noise and emissions, and another supporting mitigation efforts such as home soundproofing, public health programs, and healthcare services for affected residents. The legislation responds to studies linking airport emissions to increased risks of cancer, heart disease, and asthma, as well as findings that aircraft noise negatively affects children's learning.
    TagsAdam Smith, Aviation Emissions, Environmental Justice, EPA, Highline Forum, HR61618, Noise Mitigation
  • 2025-01-14

    Rep. Adam Smith Aviation Noise and Emissions Mitigation Act Fact Sheet

    Fact sheet from U.S. Representative Adam Smith (Washington's 9th District) describing the Aviation Noise and Emissions Mitigation Act, which proposes two EPA pilot grant programs to help communities near airports monitor and mitigate aviation noise and emissions, directly relevant to Sea-Tac Airport area communities.
    TagsAdam Smith, Aviation Emissions, EPA, Highline Forum, Noise Mitigation
  • 2025-01-07

    Aviation Noise and Emissions Mitigation Act (H.R. __, 119th Congress, 1st Session)

    The Aviation Noise and Emissions Mitigation Act, introduced in the 119th Congress by Rep. Smith of Washington, would direct the EPA to establish a 3-year pilot grant program to measure aircraft and airport noise and emissions—including greenhouse gases, particulate matter, and ultrafine particles—in communities near airports and flight paths. Grant recipients would use advanced monitoring technology to trace pollution to specific sources, produce neighborhood- and ZIP Code-level data, and work with local agencies and community organizations to develop mitigation strategies. The program is designed to be replicable nationwide, with a focus on identifying and protecting frontline and disproportionately impacted communities.
    TagsAdam Smith, Aviation Emissions, EPA, Highline Forum, Ultrafine

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Upcoming Events

  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
    Zoom (Virtual Meeting)
    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

    [...]
  • Commercial Aviation Work Group
    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
    Virtual Meeting (Zoom)
    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

    [...]

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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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