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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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  • 1970-12-31

    42 USC Chapter 85, Subchapter II, Part B: Aircraft Emission Standards

    ★
    42 USC CHAPTER 85, SUBCHAPTER II, Part B: Aircraft Emission Standards Current 2024 Main Ed. (1/6/2025) [Titles 1 through 41] 2018 Ed. and Supplement V (1/3/2024) 2018 Ed. and Supplement IV (1/5/2023) 2018 Ed. and Supplement III (1/3/2022) 2018 Ed. and Supplement II (1/13/2021) 2018 Ed. and Supplement I (1/24/2020) 2018 Main Ed. (1/14/2019) 2012
    CategoriesFrom The Web, Key Documents, Legislation TagsAviation Emissions, Clean Air Act, Code of Federal Regulations, EPA, Legislation
  • 2026-07-21

    Quiet Communities, Inc. et al. v. United States Environmental Protection Agency et al., Case No. 23-cv-1649 (JMC) — Memorandum opinion and order

    A federal court ruled in 2023 that the EPA had unreasonably delayed for over 40 years in carrying out its legal duties under the Noise Control Act of 1972, which requires the agency to regulate environmental noise, publish noise-related reports, and help state and local governments develop noise control programs. Although President Reagan defunded the EPA's noise office in 1982, Congress never actually repealed the Noise Control Act, meaning the EPA's obligations under the law remained in force. The court granted partial summary judgment in favor of the plaintiffs, finding the EPA's inaction on four key counts unlawful.
    TagsEnvironmental Protection Agency, EPA, FAA, Noise Control Act of 1972, Noise Pollution, Quiet Communities
  • 23 16 1649 quiet communities v EPA pdf
    2026-07-21

    Quiet Communities, Inc. et al. v. United States Environmental Protection Agency et al., Case No. 23-cv-1649 (JMC) — Memorandum opinion and order

    A federal court ruled in 2023 that the EPA had unreasonably delayed for over 40 years in carrying out its legal duties under the Noise Control Act of 1972, which requires the agency to regulate environmental noise, publish noise-related reports, and help state and local governments develop noise control programs. Although President Reagan defunded the EPA's noise office in 1982, Congress never actually repealed the Noise Control Act, meaning the EPA's obligations under the law remained in force. The court granted partial summary judgment in favor of the plaintiffs, finding the EPA's inaction on four key counts unlawful.
    TagsEnvironmental Protection Agency, EPA, FAA, Noise Control Act of 1972, Noise Pollution, Quiet Communities
  • Hk opengraph 1
    2026-07-02

    Holland & Knight EPA Proposes UCMR 6 for PFAS and Other Contaminants, Declines Adding Microplastics

    Sea-Tac Airport sits at the intersection of several PFAS risk factors that make the UCMR 6 proposal especially significant for surrounding communities. Airports are **among the highest-risk PFAS contamination sites** in the country. Sea-Tac has historically used AFFF for fire suppression training and emergency response - AFFF contains high concentrations of PFOS and PFOA, the most well-studied PFAS compounds - These chemicals **migrate readily into groundwater** and do not break down naturally./ - The airport sits on a **glacial outwash plain** with highly permeable soils - This geology **accelerates PFAS movement** into groundwater - Surrounding communities including **Burien, Des Moines, SeaTac city, and Tukwila** draw from regional water systems potentially affected - The **Highline Water District** and other local providers serve these communities
    CategoriesFrom The Web TagsEPA, Holland & Knight, PFAS
  • Trump Lee Zeldin Epa Deregulation of Greenhouse Gases Announcement.apnews

    Trump and Lee Zeldin EPA Greenhouse Gas Deregulation Announcement

    A speaker addresses the room from a podium bearing the Seal of the President of the United States, while a second man in a navy suit and pink tie stands to the right holding a green official folder. The setting appears to be the Roosevelt Room or a similar formal White House venue, with an American flag and painted portrait visible in the background.
    TagsEnvironmental Protection Agency, EPA, Executive Orders, FAA, Greenhouse gases
  • 2026-04-02

    EPA Boosts Biofuel Mandates in Final Renewable Fuel Standard Rule for 2026-2027

    Highlights The U.S. Environmental Protection Agency (EPA) has finalized a rule setting record-high levels for U.S. blending of biofuels. EPA estimates the rule will require a 60 percent increase of biodiesel and renewable diesel production and use compared to 2025 levels. This Holland & Knight alert summarizes policy changes in the final rule and their
    CategoriesFrom The Web TagsAirline Industry, Environment, EPA, Holland & Knight, Sustainable Aviation Fuels
  • 2026-03-04

    Lower Duwamish Waterway Superfund Settlement Summary

    Settlement Resources Press Release Lower Duwamish Consent Decree (pdf) (10.95 MB) Lower Duwamish Complaint (pdf) (192.55 KB)On March 4, 2026, the U.S. Environmental Protection Agency (EPA), U.S. Department of Justice (DOJ) and the state of Washington, reached a settlement agreement with more than 100 potentially responsible parties to address hazardous substances released into the Lower
    CategoriesFrom The Web TagsBoeing, Duwamish River, EPA, Port Of Seattle, Superfund
  • 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
  • Trump Epa Rollbacks Evan Zucci

    Trump EPA deregulation announcement, White House

    A black-and-white photograph taken inside what appears to be the White House, showing three men in suits near a doorway. A sign on an easel prominently reads 'Largest Deregulation in U.S. History' and displays the Presidential Seal.
    TagsEPA, Executive Orders, FAA, Regulations
  • Trump Lee Zeldin Endangerment Finding

    Trump Lee Zeldin Endangerment Finding

    Two men in suits stand in what appears to be a White House room, one speaking at a podium bearing the Seal of the President of the United States. The setting and official seal confirm this is a formal White House event, but no captions, watermarks, or other text identify the specific individuals, date, or event.
    TagsEnvironmental Protection Agency, EPA, Executive Orders, FAA, Politics

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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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