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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.

TagSustainable Airport Master Plan(237)

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  • 180620-SAMP NTP Presentation-Public-Meeting 16-NTP-Environmental Review-cropped

    An aerial planning map of Seattle-Tacoma International Airport (Sea-Tac) showing proposed capital improvement projects categorized into Airside, Terminal, Cargo, Landside, and Airport/Airline Support elements. Projects are color-coded by type (new terminal, new pavement, new cargo, new support facilities, demolition, new hardstand/hold pad) and labeled with alphanumeric identifiers including runway extensions, taxiway relocations, new terminal gates, cargo redevelopment areas, and employee parking structures.
    CategoriesMeetings TagsAirport Expansion, Environmental Review, Map, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • 180620-SAMP-Presentation-Public-Meeting 12 NTP Major Improvements-cropped

    An aerial planning map of Seattle-Tacoma International Airport showing proposed capital improvements including a Second Terminal, North Gates, Busway & Stations, Taxiway A/B and D Extensions, Westside Maintenance Campus, Fuel Farm Expansion, C4S Warehouse Redevelopment, Hardstand pads, ARFF Relocation, and Roadway Improvements. The legend distinguishes new terminal, maintenance, cargo, support facilities, hardstand pads, existing buildings, new pavement, and demolition areas.
    CategoriesMeetings TagsAirport Expansion, capital improvements, Map, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • 180620-SAMP-Presentation-Public-Meeting 12 NTP Major Improvements

    A planning slide titled 'Near-Term Projects – Major Improvements' showing an aerial map of an airport with labeled infrastructure projects including a Second Terminal, Taxiway A/B and D Extensions, Westside Maintenance Campus, Fuel Farm Expansion, Busway & Stations, Roadway Improvements, North Gates, Hardstand areas, ARFF Relocation, Highspeed Exit, C4S Warehouse Redevelopment, and Airline Support facilities. The map uses a color-coded legend distinguishing new terminal, maintenance, cargo, support facilities, hardstand pads, existing buildings, new pavement, and demolition areas.
    CategoriesMeetings TagsAirport Expansion, Map, Presentation, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • 180620 SAMP Presentation Public Meeting

    SAMP 7286 Description
    CategoriesMeetings TagsSAMP, Sustainable Airport Master PlanFolderSAMP
  • 180620 SAMP Presentation Public Meeting NTP

    A color-coded airport master plan or development concept drawing overlaid on an aerial photograph, showing terminal buildings, taxiways, runways, and aircraft parking positions. No visible text, logos, dates, or watermarks are legible at this resolution to confirm the specific airport or project.
    CategoriesMeetings TagsSAMP, Sustainable Airport Master PlanFolderSAMP
  • 2022-07-14

    Fix the Harm from Sea-Tac Airport Flights: Education Campaign Fact Sheet

    The Beacon Hill Council and El Centro De La Raza are calling on community members to take action against the environmental, health, and equity harms caused by SeaTac Airport flight operations, which affect nearly 420,000 residents — including large proportions of people of color, immigrants, and refugees. Aircraft noise regularly exceeds World Health Organization safe limits, while air pollution from flights contributes to cardiovascular disease, respiratory illness, and developmental harm in children, with no current mitigation available for many impacted neighborhoods. The campaign also warns that SeaTac's planned expansion — from 47 to 66 million passengers, doubled international flights, and tripled air cargo — will worsen these impacts, and pledges to submit community concerns to the FAA during the expansion review process.
    TagsBeacon Hill, Environmental Justice, NEPA, SAMP, Sea-Tac Airport, Sustainable Airport Master Plan, UltrafineFolder2024 Draft EA
  • The Fourth Runway

    We’ve begun using the term “Fourth Runway” to describe two large projects (SR-509 and the Sustainable Airport Master Plan) as one system, which they are. The two projects have always been part of a regional plan begun over fifty years ago to meet the strategic goals of the Port Of Seattle and regional planners. The construction of SR-509 will affect the communities are great deal. But starting in 2027 the projects will also increase flight operations at least 33% and cargo operations by 300%.
    CategoriesExplainers Tags4th Runway, Fourth Runway, SAMP, SR509, Sustainable Airport Master Plan, WSDOT
  • 2022-06-23

    Sustainable Airport Master Plan Near Term Projects: Environmental Review Update

    This June 2022 presentation by Des Moines Chief Strategic Officer Susan Cezar provides an update on the environmental review of Near Term Projects under the Port of Seattle's Sustainable Airport Master Plan (SAMP). It outlines the history of the review process dating back to 2015, including a multi-city inter-local agreement between Des Moines, Burien, Normandy Park, and SeaTac to coordinate responses to the Port's environmental documents. City staff continue to monitor the Port's compliance with federal (NEPA) and state (SEPA) environmental requirements as airport capital projects move forward.
    TagsCity Of Des Moines, Environmental Review, NEPA, SAMP, SEPA, Sustainable Airport Master PlanFolderSAMP
  • 2021-09-02

    City of Des Moines Agenda Item: Consultant Contract Amendment for Sea-Tac Airport Sustainable Airport Master Plan Environmental Review and Analysis

    The City of Des Moines, WA considered an amendment to a consultant contract supporting a coordinated environmental review of the Port of Seattle's Sea-Tac Airport Sustainable Airport Master Plan (SAMP), a 20-year airport growth plan. The amendment adds $100,000 to the original $175,000 contract, extends its term to 2023, and shifts contract administration from SeaTac to Des Moines, with costs shared among Des Moines, Burien, Normandy Park, and SeaTac based on population. The consultant, now operating as Primacy Strategy Group LLC, assists the four cities in reviewing and responding to environmental documents and impacts related to the SAMP process under NEPA and SEPA.
    TagsCity Of Des Moines, City Of SeaTac, Interlocal Agreement, Lockridge Grindal Nauen, NEPA, SAMP, Sustainable Airport Master PlanFolderDes Moines
  • 2021-08-24

    Port of Seattle Press Release: Project in North SeaTac Park Removed from SAMP

    August 25, 2021 Early this year, Port staff submitted the draft federal environmental assessment (EA) for the Sustainable Airport Master Plan (SAMP) to the FAA for its review. The EA’s screening of alternatives included the proposed surface parking lot in North SeaTac Park (L06) and considered alternate ways to meet future employee parking needs.  In that
    CategoriesFrom The Web TagsEnvironmental Impact Statement, FAA, North Sea-Tac Park, Port Of Seattle Commission, Press Release, SAMP, Sustainable Airport Master Plan

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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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