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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.

TagEnvironmental Impact Statement(325)

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  • 2025-01-21

    Senate Bill 5380: Increasing environmental justice by improving government decisions

    Washington Senate Bill 5380 (2025) requires state agencies to evaluate environmental justice impacts when reviewing permits for industrial or potentially harmful projects located in pollution-burdened communities. It mandates the completion of an Environmental Justice Impact Statement and a public hearing within affected communities before project approvals can move forward. The bill aims to reduce cumulative environmental and health disparities across Washington State.
    TagsEnvironmental Impact Statement, Environmental Justice, SB5380, SEPA, Washington State LegislatureFolderLegislation
  • 2024-12-13

    Comments on the FAA EA: SAMP Draft Environmental Assessment (Debi Wagner)

    This document presents formal public comments opposing an FAA Environmental Assessment for expansion projects at Seattle-Tacoma International Airport. The author argues that the stated justification for expansion is misleading, contending that airport growth would not automatically occur without new gates and terminals since FAA safety rules already cap the number of aircraft operations. Additional concerns raised include disproportionate health burdens on nearby communities, unreliable air pollution modeling, inadequate environmental justice analysis, and failure to properly assess cumulative public health and climate impacts.
    TagsClean Air Act, Debi Wagner, Environmental Impact Statement, Environmental Justice, FAA, NAAQS, NEPA, SAMP, SAMP Draft EA, Sea-Tac Airport, Sustainable Airport Master PlanFolder2024 Comment
  • 2024-12-13

    SAMP Comments: Stuart Jenner Public Comment on 2024 Draft Environmental Assessment

    Seatac Airport neighbor Stuart Jenner submitted public comments in December 2024 criticizing the Port of Seattle's Sustainable Airport Master Plan (SAMP), arguing that citizens were given inadequate time to review over 4,000 pages of documents and that an Environmental Impact Statement—not merely an Environmental Assessment—is needed to properly evaluate the plan's effects on nearby residents. Jenner raises concerns about opaque computer models used to claim a nearly 50% increase in passenger traffic would have no environmental impact, shifting baseline comparisons that ignore past promises made during the third runway approval, and the absence of project cost information. He calls on Port Commissioners and the FAA to extend the public comment period and subject the plan to greater independent scrutiny.
    Tagscommunity engagement, Environmental Impact Statement, NEPA, SAMP, SAMP Draft EA, Sea-Tac Airport, Sustainable Airport Master PlanFolder2024 Comment
  • 2024-12-13

    City of Tukwila Comment Letter on Sea-Tac Airport Sustainable Airport Master Plan Draft Environmental Assessment

    The City of Tukwila submitted formal comments on December 13, 2024, objecting to SeaTac Airport's Sustainable Airport Master Plan Draft Environmental Assessment (SAMP Draft EA), arguing that the study area is too narrow, covering only 3,692 acres, and fails to account for broader impacts on surrounding communities including increased traffic, air quality degradation, and noise under flight paths. The city contends that proposed mitigation measures are inadequate and that the assessment ignores equity and social justice concerns affecting the low-income, diverse communities near the airport. Tukwila is calling for a full Environmental Impact Statement with an expanded General Study Area that includes the entire city and broader South King County region.
    TagsEnvironmental Impact Statement, Environmental Justice, NEPA, SAMP, SAMP Draft EA, South King County, Sustainable Airport Master Plan, TukwilaFolder2024 Comment
  • 2024-12-11

    City of Burien Comment Letter on SAMP Draft Environmental Assessment

    The City of Burien submitted formal comments in December 2024 arguing that the Port of Seattle's Sustainable Airport Master Plan (SAMP) for Sea-Tac International Airport contains serious flaws, including an unrealistically narrow study boundary that ignores noise and air pollution impacts on surrounding neighborhoods. The city contends that the plan fails to account for cumulative impacts such as the SR-509 highway extension, the 2008 opening of the airport's third runway, and emerging science on health risks from ultrafine particles and aircraft noise. Burien is calling for a full Environmental Impact Statement rather than the less rigorous Environmental Assessment currently underway.
    TagsCity of Burien, Environmental Impact Statement, NEPA, SAMP, SR509, Sustainable Airport Master PlanFolder2024 Comment
  • 2024-11-12

    Marin Audubon Society v. Federal Aviation Administration: D.C. Circuit Court of Appeals Opinion No. 23-1067

    A federal appeals court reviewed a challenge by conservation groups to an Air Tour Management Plan regulating tourist flights over four national parks near San Francisco, including Golden Gate National Recreation Area and Point Reyes National Seashore. The Federal Aviation Administration and National Park Service had jointly issued the plan under the National Parks Air Tour Management Act of 2000, determining that no full environmental review was required because the plan would cause minimal additional environmental impact. The court considered whether the agencies properly bypassed environmental analysis under the National Environmental Policy Act.
    CategoriesLitigation TagsEnvironmental Impact Statement, FAA, Marin Audubon Society v. Federal Aviation Administration, NEPAFolderLaw
  • SAMP Draft EA: How to provide a great public comment

    1How to provide effective public comment by December 13, 2024 Because new ways for you to participate will likely become available, this article may be subject to updates. Introduction This is the second of a two-part article concerning the Sustainable Airport Master Plan Draft Environmental Assessment (SAMP Draft EA). If you’re looking for the short
    CategoriesExplainers TagsEIS, Environmental Impact Statement, SAMP, Sustainable Airport Master Plan
  • 2024-10-18

    Burien 2044 Comprehensive Plan Final EIS

    Final Environmental Impact Statement (Final EIS) for the Burien 2044 Comprehensive Plan Update, dated October 18, 2024, prepared by the City of Burien. Evaluates three alternatives: Alternative 1 (No Action), Alternative 2 (Neighborhood Centers), and Alternative 3 (Greater Downtown). Addresses 20-year growth targets for housing and jobs, new future land use map, zoning districts, Transportation
    TagsCity of Burien, Environmental Impact Statement, Housing, Land Use, SEPAFolderBurien
  • 2024-10-01

    Seattle-Tacoma International Airport Environmental Assessment for the Sustainable Airport Master Plan Near-Term Projects: Chapter 7 References

    This document is the References section of the Environmental Assessment for Seattle-Tacoma International Airport's Sustainable Airport Master Plan Near-Term Projects, prepared by Landrum & Brown in October 2024. It lists the sources cited across four chapters, including federal regulations, FAA advisory circulars, technical memoranda, city and county planning documents, and environmental studies used to evaluate the airport's proposed near-term development projects. Key references cover topics such as air quality, greenhouse gas emissions, stormwater management, facility requirements, and land use planning for the communities surrounding Sea-Tac Airport.
    TagsEnvironmental Impact Statement, Landrum & Brown, NEPA, SAMP, SAMP Draft EA, Sustainable Airport Master PlanFolder2024 Draft EA
  • 2024-10-01

    Aqueous Film-Forming Foam Collection and Disposal Program: Final Programmatic Environmental Impact Statement

    This October 2024 report from the Washington State Department of Ecology examines options for collecting and disposing of Aqueous Film-Forming Foam (AFFF), a firefighting chemical that contains harmful PFAS compounds. The Final Programmatic Environmental Impact Statement evaluates the potential environmental effects of different collection and disposal methods for this toxic foam, which has historically been used at airports and military facilities. It is published by Ecology's Hazardous Waste and Toxics Reduction Program and is unrelated to airport noise policy.
    TagsEcology, EIS, Environmental Impact Statement, PFAS, SEPAFolderEcology

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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...]


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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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