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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.

TagPuget Sound Regional Council(191)

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  • 2021-01-01

    Puget Sound Regional Emissions Analysis

    The Puget Sound Regional Emissions Analysis is a King County-led project launched in 2021 to comprehensively measure greenhouse gas emissions across King, Kitsap, Snohomish, and Pierce counties. The project covers multiple types of emissions inventories—including community activities, consumption of goods and services, and government operations—while also modeling pathways to reduce emissions and achieve carbon neutrality. It incorporates social equity principles to address disproportionate environmental impacts on communities of color.
    TagsClimate, Environment, Greenhouse gases, King County, Puget Sound Regional CouncilFolderPublic Health
  • 2020-10-07

    City of Des Moines letter on Regional Aviation Baseline Study

    In this October 2020 letter, the City of Des Moines formally objected to the Puget Sound Regional Council's Regional Aviation Baseline Study, arguing that it wrongly assumes full implementation of SeaTac Airport's long-term expansion plan (the SAMP) before any required environmental review has been completed. The City warned that this flawed assumption skews all study scenarios, understates community noise and pollution impacts on neighborhoods near SeaTac, and creates a circular logic problem that undermines sound regional planning. Des Moines requested that the baseline be revised to reflect only already-approved and environmentally reviewed projects, and called for planning toward a second international airport to relieve pressure on SeaTac.
    TagsCity Of Des Moines, PSRC, Puget Sound Regional Council, Regional Aviation Baseline StudyFolderDes Moines
  • PSRC Baseline Study Virtual Public Meeting Postcard (09-23-2020)

    A public outreach flyer from the Puget Sound Regional Council (PSRC) inviting community members to learn about the future of aviation in the Puget Sound region. The flyer advertises an online open house at www.psrc.org/aviation-baseline-study (available September 21–October 19, 2020) and three virtual public meetings scheduled for September 23, 29, and 30, 2020.
    CategoriesMeetings TagsOpen House, PSRC, Puget Sound Regional Council, Regional Aviation Baseline StudyFolderHealth
  • 2020-09-20

    Regional Aviation Baseline Study

    The Regional Aviation Baseline Study, produced by the Puget Sound Regional Council, examines the current state and future challenges of aviation in the Puget Sound region, covering scenario development, airport analysis, and public engagement. The study highlights near-term disruptions to air travel, noting that passenger volume at Seattle-Tacoma International Airport dropped to just 27% of normal levels during the COVID-19 pandemic, with daily travelers falling to 17,200 and aircraft operations declining from 1,160 to 840 takeoffs and landings per day. The findings provide a foundation for regional planning decisions related to airport capacity, operations, and policy.
    TagsCoronavirus, Highline Forum, Puget Sound Regional Council, Regional Aviation Baseline Study, Sea-Tac AirportFolderHighline Forum 2017
  • 2020-07-23

    Regional Aviation Baseline Study Presentation

    The Regional Aviation Baseline Study, conducted by the Puget Sound Regional Council, examines aviation activity and infrastructure across the Puget Sound region. The study covers scenario development, economic analysis, and a detailed assessment of the region's airports, including major facilities like Sea-Tac. It provides a foundational framework for understanding current and future aviation capacity, demand, and related policy considerations in the greater Seattle area.
    TagsPSRC, Puget Sound Regional Council, Regional Aviation Baseline StudyFolderRegional Aviation Baseline Study
  • Puget Sound Regional Council General Assembly

    The General Assembly is PSRC’s annual meeting where members vote on major decisions, including adoption of PSRC’s budget and election of officers. All mayors, county executives, commissioners, and councilmembers of PSRC member jurisdictions and tribes have votes at the Assembly and are encouraged to participate. We need at least one elected official from your jurisdiction
    CategoriesEvents TagsPSRC, Puget Sound Regional Council
  • 2020-06-09

    Regional Aviation Baseline Study

    The Regional Aviation Baseline Study, conducted by the Puget Sound Regional Council, examines 29 airports across King, Snohomish, Kitsap, and Pierce counties to understand how aviation activities interact with communities and the broader regional economy. The study identifies each airport's role, gathers stakeholder input on aviation and airspace constraints, and establishes a foundation for future regional aviation planning. Sea-Tac Airport is the region's primary large hub, and the study provides context for understanding the broader network of aviation activity that shapes noise and land-use policy decisions across the central Puget Sound area.
    TagsPSRC, Puget Sound Regional Council, Regional Aviation Baseline StudyFolderRegional Aviation Baseline Study
  • 2020-06-01

    Regional Aviation Baseline Study: Working Paper 2 — Airport Needs Analysis

    This June 2020 working paper, prepared by WSP for the Puget Sound Regional Council, analyzes the aviation needs of the greater Seattle-Tacoma region across commercial passenger service, air cargo, and general aviation. It evaluates current airport performance, benchmarks regional airports against comparable systems, and identifies infrastructure challenges and opportunities to meet future demand. The study assesses system-wide requirements and multimodal access needs to guide long-term regional aviation planning.
    TagsGeneral Aviation, PSRC, Puget Sound Regional Council, Regional Aviation Baseline StudyFolderRegional Aviation Baseline Study
  • 2020-06-01

    Puget Sound Regional Council Annual Report, June 2020

    The Puget Sound Regional Council (PSRC) 2020 Annual Report outlines the organization's response to COVID-19 challenges in the Central Puget Sound region, including the distribution of $538 million in federal CARES Act funding to local transit agencies such as King County Metro, Sound Transit, and Washington State Ferries. The report also highlights an ongoing competitive process to allocate over $540 million in federal transportation funding for 2023–2024, evaluated on criteria including health and equity, safety, emissions reduction, and accessibility. PSRC continues its mission of regional planning and transportation funding coordination across four counties in the greater Seattle-Tacoma-Everett area.
    TagsCOVID-19, PSRC, Puget Sound Regional Council, Sound Transit, transportationFolderAnnual Reports
  • 2020-04-07

    Regional Aviation Baseline Study: Technical Workshop #3 Presentation

    This document presents Technical Workshop #3 of the Regional Aviation Baseline Study, held on April 7, 2020 via BlueJeans video conferencing. The workshop covered study status updates, development and evaluation of aviation scenarios (including current planned development and options to accommodate 50–100% of future demand gaps), and airport evaluation criteria. Participants reviewed potential supplemental airports and discussed next steps for the regional aviation planning process.
    TagsPresentation, PSRC, Puget Sound Regional Council, Regional Aviation Baseline StudyFolderRegional Aviation Baseline Study

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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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