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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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  • 2024-12-01

    City of Sea-Tac Transportation Master Plan

    The City of SeaTac's Transportation Master Plan, published in December 2024, replaces the city's previous transportation plan and outlines a comprehensive framework for managing and improving transportation infrastructure in SeaTac, Washington. Developed in collaboration with the Port of Seattle, DKS Associates, and other consultants, the plan addresses the city's transportation needs in the context of its unique position as home to Seattle-Tacoma International Airport. The document serves as a guiding policy resource for streets, transit, pedestrian and bicycle connectivity, and related transportation systems within the city.
    TagsCity Of SeaTac, Master Plan, Port Of Seattle, transportationFolderComprehensive Plan
  • Seatactmp withappendices pdf
    2024-12-01

    City of Sea-Tac Transportation Master Plan

    The City of SeaTac's Transportation Master Plan, published in December 2024, replaces the city's previous transportation plan and outlines a comprehensive framework for managing and improving transportation infrastructure in SeaTac, Washington. Developed in collaboration with the Port of Seattle, DKS Associates, and other consultants, the plan addresses the city's transportation needs in the context of its unique position as home to Seattle-Tacoma International Airport. The document serves as a guiding policy resource for streets, transit, pedestrian and bicycle connectivity, and related transportation systems within the city.
    TagsCity Of SeaTac, Master Plan, Port Of Seattle, transportationFolderComprehensive Plan
  • 2024-10-24

    Overview of the 2025-2028 Regional Transportation Improvement Program

    The 2025-2028 Regional Transportation Improvement Program (TIP), published by the Puget Sound Regional Council (PSRC) on October 24, 2024, outlines planned transportation projects and investments across the greater Puget Sound region for a four-year period. It covers project selection processes, funding plans, air quality requirements, and federal performance measures for roads, transit, ferries, and active transportation infrastructure. This document does not specifically address Sea-Tac Airport noise policy.
    Tagsnon-aviation transportation, PSRC, Puget Sound Regional Council, Regional Transportation Plan, transportationFolderPuget Sound Regional Council
  • 2024-09-05

    Draft 2025-2028 regional transportation improvement program: Appendix A detailed project listings

    This draft document from the Puget Sound Regional Council outlines the 2025-2028 Regional Transportation Improvement Program (TIP) for the greater Seattle-Tacoma region, listing federally, state, and locally funded transportation projects scheduled between 2025 and 2028. Projects are organized alphabetically by jurisdiction and include details on funding phases such as planning, design, construction, and equipment. The document was prepared as of September 5, 2024, with final updates expected by October 2024.
    Tagsnon-aviation transportation, PSRC, Puget Sound Regional Council, Regional Transportation Plan, transportationFolderPuget Sound Regional Council
  • 2024-05-13

    RCW 47.06.140: Transportation facilities and services of statewide significance—Level of service standards

    RCW 47.06.140 defines transportation facilities and services of statewide significance in Washington State, including highways, the interstate system, ferry routes, freight railroads, and high-capacity transit systems, while explicitly excluding airport facilities and services from this designation. The law requires the Washington State Department of Transportation to set level of service standards for state highways and ferry routes, in consultation with local governments, while retaining final decision-making authority. Improvements to these statewide facilities are classified as essential state public facilities under RCW 36.70A.200.
    Tagsnon-aviation transportation, RCW, transportation, Washington State Legislature, WSDOTFolderSP #2
  • 2024-05-13

    RCW 70.94.037: Transportation activities—”Conformity” determination requirements

    Washington State law RCW 70.94.037 requires that any transportation plan, program, or project in areas that don't meet federal air quality standards must be shown to conform with the state's air quality implementation plan before it can be approved or funded. The conformity determination must be made by the responsible state agency, local government, or metropolitan planning organization overseeing the project. Projects limited strictly to preservation or maintenance work are exempt from this requirement.
    TagsClean Air Act, Conformity, RCW, transportation, Washington State LegislatureFolderSP #2
  • 2023-12-05

    The Conference Center at Sea-Tac Airport: directions and parking

    This document provides directions to The Conference Center at Seattle-Tacoma International Airport, which is located on the mezzanine level above checkpoint #1. It includes instructions for arriving by car from multiple directions, by Link Light Rail, from a flight gate, by drop-off, and by hotel shuttle, all guiding visitors to the International ticketing counter area and up to the mezzanine level. Parking validation is available only in General Parking floors 3 and 5-8, and not all groups qualify for validation.
    TagsParking, Port Of Seattle, Sea-Tac Airport, transportationFolderSea-Tac Airport
  • 2023-10-01

    2023-25 Biennium Climate Commitment Act Investments to Benefit Overburdened Communities and Tribes

    Washington State's Climate Commitment Act invested over $2.1 billion in the 2023-25 budget cycle to reduce greenhouse gas emissions, with an estimated $924 million (43%) directed to overburdened communities and $155 million (7.3%) specifically benefiting Tribes. Key investments include rebates for energy-efficient home equipment, weatherization assistance for low-income households, transit grants, bike and pedestrian safety improvements, and air quality programs in heavily polluted communities. An additional $142 million was directed to salmon restoration projects important to Tribal culture and treaty rights.
    TagsClimate Commitment Act, Environmental Justice, State of Washington, transportation, Washington State LegislatureFolderCCA
  • 2023-08-27

    Trade, traffic on I-5 corridor raise vision to global level

    This article examines the growing trade and economic integration along the I-5 corridor connecting Portland, Seattle-Tacoma-Everett, and Vancouver, B.C., highlighting cross-border cooperation, Pacific Rim trade opportunities, and regional population and industrial growth in the late 20th century. It does not contain content related to Sea-Tac Airport noise policy.
    CategoriesCorrespondence TagsEconomic Impacts, Newspaper Article, Pacific NW Magazine, RCAA, State of Washington, transportationFolderRCAA
  • 2023-08-15

    Congressional Letter Supporting Cascadia High-Speed Rail Federal-State Partnership Grant Application

    Letter from Washington Democratic Delegation to SecDOT to fund Cascadia Bullet Train
    TagsMaria Cantwell, Patty Murray, Rick Larsen, transportation, WSDOTFolderPolitics

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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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