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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.

TagEcology(787)

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  • 2024-07-02

    Appendix E: Coastal Resources — FAA CZMP Negative Determination and Washington State Department of Ecology Response for Sea-Tac Airport Near-Term Projects

    The FAA issued a Negative Determination in July 2024, concluding that planned Near-Term Projects at Seattle-Tacoma International Airport (SEA) are not likely to cause coastal effects under the Coastal Zone Management Act. The projects include taxiway extensions, blast pad expansions, and relocation of navigational equipment across four airfield areas, with construction set to begin in 2026 over a six-year period. Because all FAA actions are confined to upland areas within the airport property, no significant impacts to Washington State's coastal zone resources were identified.
    TagsEcology, environmental assessment, FAA, NEPA, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderAppendices
  • 2024-06-12

    Sea-Tac Airport PFAS SHARP report — part 1 of 2

    A SHARP (Site Hazard Assessment Ranking and Prioritization) report for SeaTac Airport covering PFAS contamination identified at four areas: fire station, fuel farm, fire training area, and industrial wastewater system. The report details media scores for groundwater, soil, surface water, sediment, and indoor air, noting concerns about Des Moines Creek and the City of Highline’s
    TagsDes Moines Creek, Ecology, PFAS, Port Of Seattle, Sea-Tac AirportFolderWater
  • 2024-01-30

    HB 2070: Multiple Agency Fiscal Note Summary — Environmental Justice/SEPA Projects

    This Washington State fiscal note summarizes the estimated costs of House Bill 2070, which relates to environmental justice and State Environmental Policy Act (SEPA) projects. The bill is projected to cost multiple state agencies a combined total of approximately $1.28 million in operating expenditures for 2023-25, rising to $2.64 million in 2025-27, before declining to about $1.61 million in 2027-29. The Department of Ecology, Department of Fish and Wildlife, and Office of the Attorney General are among the primary agencies expected to incur costs, with some impacts remaining indeterminate.
    TagsEcology, Environmental Justice, HB2070, Legislation, SEPA, Washington State LegislatureFolderHB2070
  • 2024-01-01

    Appendix F: Hazardous Materials, Solid Waste, and Pollution Prevention Technical Report: Sustainable Airport Master Plan Near-Term Projects

    This technical report, prepared by Landrum & Brown for the Port of Seattle in January 2024, assesses hazardous materials, solid waste, and pollution prevention concerns related to near-term construction projects under the Sustainable Airport Master Plan at Seattle-Tacoma International Airport. It includes investigations of contaminated fuel farm sites, environmental baseline studies, and regulated building materials surveys (such as asbestos and lead) for several airport facilities slated for redevelopment. The report compiles findings and regulatory correspondence from Washington State Department of Ecology to guide safe handling and cleanup of hazardous materials during planned airport improvements.
    TagsEcology, Landrum & Brown, Port Of Seattle, SAMP, Sea-Tac Airport, SEPA, Sustainable Airport Master PlanFolderAppendices
  • 2024-01-01

    Hazardous Materials, Solid Waste, and Pollution Prevention Technical Report: Appendix F — Hazardous Materials and Solid Waste

    This technical report, prepared by Landrum & Brown for the Port of Seattle in January 2024, covers hazardous materials, solid waste, and pollution prevention as part of the Sustainable Airport Master Plan's near-term projects at Seattle-Tacoma International Airport. It includes assessments of contaminated fuel farm sites, regulated building materials such as asbestos and lead in airport structures, and environmental investigation reports for fueling sites. Supporting attachments document findings from agencies like Washington State Ecology and surveys of specific airport buildings managed by tenants including United Airlines and Swissport.
    TagsEcology, Landrum & Brown, NEPA, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderAppendices
  • 2024-01-01

    Hazardous Materials, Solid Waste, and Pollution Prevention Technical Report: Sustainable Airport Master Plan – Near-Term Projects

    This technical report, prepared by Landrum & Brown for the Port of Seattle in January 2024, addresses hazardous materials, solid waste, and pollution prevention as part of the Sustainable Airport Master Plan's near-term projects at Seattle-Tacoma International Airport. It documents environmental assessments of various airport sites, including fuel farm areas, cargo buildings, and airline maintenance facilities, examining issues such as soil contamination, regulated building materials like asbestos and lead, and fueling site investigations. The report compiles findings and supporting attachments from multiple environmental studies conducted across the airport campus.
    TagsEcology, Landrum & Brown, NEPA, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderAppendices
  • 2023-12-01

    Improving air quality in overburdened communities highly impacted by air pollution: 2023 report

    This 2023 report from the Washington State Department of Ecology focuses on improving air quality in overburdened communities that are highly impacted by air pollution across Washington State. It outlines regional office contacts, accessibility services, and language assistance resources available to affected residents. Note: This document does not specifically address Sea-Tac Airport noise policy and may not be directly relevant to airport noise concerns.
    TagsAir Quality Monitors, Ecology, Environmental Justice, State of Washington, Washington State Department Of HealthFolderHealth
  • Air Quality Monitor Jay Inslee Ecology Jefferson

    Two men examine meteorological or air quality monitoring instruments mounted on a pole at an outdoor monitoring station. One man wears a black KN95 mask and a blazer; the other wears a plaid shirt and baseball cap with a visible badge. A small building consistent with an environmental monitoring station is visible in the background.
    TagsAir Quality Monitors, Beacon Hill, Ecology, Jay InsleeFolderState
  • 2023-10-01

    Seattle-Beacon Hill Station: Focus on Air Monitoring

    Washington State's Department of Ecology has operated the Seattle-Beacon Hill Air Monitoring Station since 1979, tracking pollutants such as ozone, nitrogen dioxide, fine particles, and air toxics to ensure compliance with national air quality standards. Over four decades of data show significant air quality improvements, including a 60% decline in nitrogen dioxide and a 40% reduction in fine particle concentrations, largely due to stricter emissions regulations. The station also supports ongoing research and community efforts to address air pollution disparities in overburdened neighborhoods of South Seattle.
    TagsAir Quality Monitors, Beacon Hill, Ecology, Environmental Justice, EPAFolderEcology
  • Ecology Shoreline Photo Viewer

    CategoriesResources TagsEcology

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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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