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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.
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TagThird Runway(1067)

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  • 2003-01-17

    Plot alleged to elect 3rd-runway supporters – Election watchdog links businessman’s $49,000 with mayor

    Des Moines Mayor Don Wasson was charged by Washington State's Public Disclosure Commission with concealing $49,000 in illegal campaign contributions from local businessman Hank Hopkins, who stood to profit from a third-runway construction contract at Seattle-Tacoma International Airport. The funds allegedly helped elect three pro-runway City Council members in 2001, after which Wasson was named mayor and the council voted to cut the city's $150,000 funding to the anti-runway Airport Communities Coalition. Wasson denied the charges, but investigators confronted him with an endorsed check he had initially claimed not to have received.
    TagsAirport Communities Coalition, City Of Des Moines, Don Wasson, Seattle Times, Third RunwayFolderConveyor
  • 2002-12-13

    Permit issuance for the proposed third runway

    On December 13, 2002, the U.S. Army Corps of Engineers issued a federal permit allowing the Port of Seattle to build a third runway at Sea-Tac Airport as part of its Master Plan Update. The project includes an 8,500-foot runway, two Runway Safety Areas, and related construction that will permanently impact nearly 20 acres of wetlands and up to 980 linear feet of Miller Creek. After weighing input from government agencies and the public, the Corps determined the project was not contrary to the public interest and approved the permit.
    TagsArmy Corp of Engineers, Clean Water Act, Miller Creek, Port Of Seattle, RCAA, Third RunwayFolderRCAA
  • 2002-12-05

    Maury Island Barging and Pier Comments Relevant to Sea-Tac Third Runway 404 Permit Application 1996-4-02325

    A December 2002 letter to the U.S. Army Corps of Engineers raises environmental and public health concerns about the Sea-Tac Airport Third Runway project, arguing that construction pollution, ASARCO-contaminated fill material, and increased de-icing fluid use may be harming Puget Sound marine life, including orca populations. The author also warns of collision risks between barges transporting runway fill material and large tankers crossing the same waters. The letter calls for denial of the third runway permit, citing the absence of any cumulative air pollution or health hazard analysis and questioning the project's necessity given declining air and marine cargo traffic.
    TagsArmy Corp of Engineers, Deicing, Fill Dirt, Puget Sound, Third RunwayFolderThird Runway
  • 2002-11-06

    PCHB Third Runway: Exhibit List — ACC, Port Of Seattle, and Ecology Exhibits (Nos. 320–1058)

    This document is an exhibit list from a legal proceeding involving the Port of Seattle, the Washington State Department of Ecology, and other parties regarding environmental issues related to Seattle-Tacoma International Airport (Sea-Tac). The exhibits cover topics such as groundwater contamination, stormwater management, fill materials used during Third Runway construction, and water quality monitoring in nearby Miller and Des Moines Creeks. Documents span from the early 1990s through 2001 and include internal memos, consultant reports, regulatory correspondence, and interrogatory responses, with each exhibit assigned an admissibility status such as 'Admitted by Stipulation' or 'Admitted for a Limited Purpose.'
    TagsACC, Ecology, PCHB, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderPCHB
  • 2002-10-25

    EXH AR028014: Wetland and Stream Impacts in the Miller Creek Basin — Sea-Tac Airport Third Runway Project Map

    AR028014. Port of Seattle biological assessment map depicting wetland and stream impacts in the Miller Creek Basin related to the Seattle-Tacoma International Airport Third Runway project. Shows delineated wetlands verified by Army Corps of Engineers (ACOE), wetlands not verified by ACOE, creeks, boundary of acquisition area, third runway and interconnecting taxiways, third runway embankment and
    TagsACC, Environmental Impact Statement, Map, Miller Creek, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 10
  • 2002-10-25

    TP Day 9: PCHB Hearing — Dr. William Stubblefield WER Range-Finding Toxicity Studies (AR 056666–056668)

    This document is a transcript of legal proceedings in which attorneys and a hearing officer debate the admissibility of laboratory toxicity study documents related to water quality testing. An expert witness, Dr. Stubblefield, confirms familiarity with the range-finding WERS (Water Effect Ratio) studies, while opposing counsel raises hearsay objections. The hearing officer ultimately allows certain documents for background reference only, not as proof of the facts they contain.
    TagsACC, PCHB, Pollution Control Hearings Board, Port Of Seattle, Third Runway, TranscriptFolderBox 24
  • 2002-10-23

    EXH AR028386: Potential Mitigation Sites Evaluated in the Miller Creek and Des Moines Creek Watersheds

    Map (AR 028386, PARA 0013189) showing potential mitigation sites evaluated in the Miller Creek and Des Moines Creek watersheds near Sea-Tac Airport. Displays numbered mitigation sites greater than 10 acres, airport runways (present and proposed 3rd runway), borrow/warehouse/parking/SABA areas, watershed boundaries, Puget Sound shoreline, Burien, Normandy Park, SeaTac, Angle Lake, Bow Lake, Burien Lake, Lake
    TagsACC, Des Moines Creek, Map, Miller Creek, Pollution Control Hearings Board, Sea-Tac Airport, Third RunwayFolderBox 10
  • 2002-10-23

    EXH AR026428: Field Photo — Third Runway EIS Site Investigation (John Strand)

    This document (AR 026428) contains a photograph labeled 'john strand.jpg' showing two individuals outdoors near what appears to be environmental sampling or monitoring equipment, including hoses and collection containers, in a vegetated area. The image appears to be part of an administrative record related to environmental assessment activities, likely connected to noise or environmental impact studies near Sea-Tac Airport.
    TagsACC, Environmental Review, PCHB, Pollution Control Hearings Board, Sea-Tac Airport, soil, Third RunwayFolderBox 10
  • 2002-10-23

    EXH AR038735: Interlocal Agreement, Airport Communities Coalition

    Interlocal Agreement establishing the Airport Communities Coalition (ACC) under the Interlocal Cooperation Act (RCW Chapter 39.34), signed by the cities of Normandy Park, Des Moines, Burien, Federal Way, and Tukwila, each a Washington Municipal Corporation. The agreement opposes construction of a third runway at Seattle-Tacoma International Airport, opposes increased air traffic at Boeing Field, seeks
    TagsACC, Airport Communities Coalition, Boeing Field, Four Post Plan, Interlocal Agreement, Pollution Control Hearings Board, Third RunwayFolderBox 16
  • 2002-10-23

    EXH AR040029: Resolution No. 3212, As Amended — Port Of Seattle Commission Master Plan Update for STIA, Third Runway Approval

    Port Of Seattle Commission Resolution No. 3212, As Amended, adopting the Airport Master Plan Update for Seattle-Tacoma International Airport (STIA), approving development of a new 8500-foot dependent air carrier runway with centerline located no further than 2500 feet west of runway 16L/34R, and committing to additional noise reduction measures per Puget Sound Regional Council Resolution
    TagsACC, Environmental Impact Statement, Pollution Control Hearings Board, Port Of Seattle Commission, Puget Sound Regional Council, Sea-Tac Airport Master Plan, Third RunwayFolderBox 17

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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

    [...]

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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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