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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.

TagEPA(85)

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  • Trump Epa Rollbacks Evan Zucci
    2026-02-12

    Trump’s EPA Rollbacks Will Reverberate for ‘Decades’

    The EPA’s repeal of a cornerstone climate rule is part of an aggressive agenda whose effects will outlast the president President Donald Trump is shrinking the Environmental Protection Agency more quickly and aggressively than ever before, culminating in last week’s move to rescind the crucial “endangerment finding” underpinning key regulations of planet-warming pollution. And unlike
    CategoriesFrom The Web TagsBloomberg, EJScreen, EPA
  • EPA News Releases Header Graphic

    Official U.S. Environmental Protection Agency (EPA) news release header graphic, featuring the EPA seal and agency name on a dark green background. This is a standard EPA press release banner used for official agency announcements.
    TagsEnvironmental Protection Agency, EPA, FAA, News, Press Release
  • 2026-01-28

    EPA Advances Cooperative Federalism to Improve Air Quality by Taking an Important Step to Reconsider Biden-era “Good Neighbor Plan”

    Agency Proposes to Approve State Implementation Plans for Eight States January 28, 2026 Contact Information EPA Press Office (press@epa.gov) WASHINGTON – On January 27, 2026, the U.S. Environmental Protection Agency (EPA) proposed phase 1 of its reconsideration of the deeply flawed Biden-era “Good Neighbor Plan.” Under phase 1, the agency is proposing to approve eight
    CategoriesFrom The Web TagsEPA, NAAQS
  • Powerplants Socialfeature 1
    2025-11-25

    EPA asks court to strike down fine particulate air pollution standard, threatening public health and undermining obligation under Clean Air Act

    WASHINGTON – The U.S. Environmental Protection Agency (EPA) filed a motion for vacatur in the Court of Appeals for the D.C. Circuit, asking the court to strike down the health-based fine particulate matter (PM2.5) standard the agency had strengthened last year. Kentucky V EPA Motion Vacatur “EPA’s motion is a blatant attempt to avoid legal
    CategoriesFrom The Web TagsClean Air Act, Clean Air Task Force, EPA, NAAQS
  • 2025-11-24

    Respondents’ motion for vacatur

    This is a legal filing in the U.S. Court of Appeals for the D.C. Circuit in which the U.S. Environmental Protection Agency asks the court to vacate its own previously issued air quality standard, arguing that EPA lacked the statutory authority to revise the standard without completing a full review process. The case centers on National Ambient Air Quality Standards (NAAQS) under the Clean Air Act, not airport noise policy. This document does not contain information relevant to Sea-Tac Airport noise policy.
    TagsCEQ, Clean Air Act, Environmental Impact Statement, EPA, FAA, NAAQS
  • Kentucky V EPA Vacatur Pdf
    2025-11-24

    Respondents’ motion for vacatur

    This is a legal filing in the U.S. Court of Appeals for the D.C. Circuit in which the U.S. Environmental Protection Agency asks the court to vacate its own previously issued air quality standard, arguing that EPA lacked the statutory authority to revise the standard without completing a full review process. The case centers on National Ambient Air Quality Standards (NAAQS) under the Clean Air Act, not airport noise policy. This document does not contain information relevant to Sea-Tac Airport noise policy.
    TagsCEQ, Clean Air Act, Environmental Impact Statement, EPA, FAA, NAAQS
  • 2025-07-29

    In a Game-Changing Climate Rollback, E.P.A. Aims to Kill a Bedrock Scientific Finding

    If upheld in court, the repeal would make it almost impossible for future administrations to rein in greenhouse gases. By Maxine Joselow and Lisa Friedman Reporting from Washington July 29, 2025Updated 3:19 p.m. ET Lee Zeldin, the administrator of the Environmental Protection Agency, said on Tuesday the Trump administration would revoke the scientific determination that
    CategoriesFrom The Web, News Stories TagsEPA, New York Times
  • Guidance Leaflet PFOA in Fire-Fighting Foams 65203287-PFOA-EPA-Factsheet-Final

    TagsEPA, 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

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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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