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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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  • 2005-06-15

    Port, Des Moines work together on business park plan

    In June 2005, the Port of Seattle and the city of Des Moines — formerly legal adversaries over Sea-Tac Airport's third runway — unanimously agreed to collaborate on a proposed 75-acre Des Moines Creek Business Park on land south of the airport that was cleared of homes in the late 1980s as part of a noise mitigation program. Studies suggested the site was best suited for aviation-related or general industry, with potential uses including manufacturing, distribution, and retail. The partnership marked a significant shift in relations between the two parties, with construction potentially targeted for early 2007 pending approval of a conceptual master plan in early 2006.
    CategoriesFrom The Web TagsCity Of Des Moines, Daily Journal Of Commerce, Des Moines Creek Business Park, Diane Summerhays, Port Of SeattleFolderDes Moines
  • 2005-05-10

    Addendum to fact sheet: Port Of Seattle Sea-Tac International Airport NPDES Permit No. WA-002465-1

    The Washington State Department of Ecology issued this draft addendum to address shortcomings in the NPDES wastewater discharge permit for Seattle-Tacoma International Airport, following a ruling by the Pollution Control Hearings Board. The document outlines required changes to how the Port of Seattle manages contaminated wastewater from aircraft deicing operations, including stricter pollution limits, improved treatment standards, and enhanced water quality monitoring of nearby waterways such as Miller Creek. The revisions focus on reducing harmful biochemical oxygen demand (BOD) discharges into Puget Sound and ensuring the Port implements all available pollution control measures as quickly as possible.
    TagsDeicing, NPDES, Pollution Control Hearings Board, Port Of Seattle, RCAA, Water QualityFolderRCAA
  • 2004-06-07

    Notice of appeal – Airport Communities Coalition v. State of Washington, Department of Ecology, and Port Of Seattle

    The Airport Communities Coalition (ACC) — representing the cities of Burien, Des Moines, Federal Way, Normandy Park, Tukwila, and the Highline School District — filed a formal appeal challenging Washington State's 2004 Clean Water Act certification for the Port of Seattle's proposed third runway at Seattle-Tacoma International Airport. The coalition argued that the certification violated Supreme Court mandates and water quality laws by allowing contaminated fill material to be used in construction, threatening nearby streams and wetlands. The appeal was submitted to the Pollution Control Hearings Board for the State of Washington.
    TagsAirport Communities Coalition, Clean Water Act, Pollution Control Hearings Board, Port Of Seattle, RCAA, Third RunwayFolderRCAA
  • 2004-05-26

    Letter to Peter Eglick re ACC v. Graves, et al., No. 04-35011 (9th Cir.)

    In a May 26, 2004 letter, Port of Seattle Senior Counsel Traci M. Goodwin notified attorney Peter Eglick that the Port planned to begin construction of a third runway at Sea-Tac Airport on or before June 7, 2004, following a Washington State Supreme Court ruling affirming Ecology's Clean Water Act certification. The letter references the case ACC v. Graves (9th Cir. No. 04-35011) and warns opposing counsel of the Port's construction timeline under Ninth Circuit Rule 27-3, which requires advance notice when a party may seek emergency relief within 21 days.
    TagsAirport Communities Coalition, Clean Water Act, Ninth Circuit Court of Appeals, Port Of Seattle, RCAA, Third RunwayFolderRCAA
  • 2004-04-19

    Resolution No. 3523 – Des Moines Creek Basin Plan Interlocal Agreement V2

    A Port of Seattle resolution authorizing the Chief Executive Officer to execute version two of an Interlocal Agreement with the Cities of Des Moines and SeaTac, Washington State Department of Transportation and King County to fund, construct, operate and maintain capital projects necessary to implement the Des Moines Creek Basin Plan. The projects include construction
    TagsCity Of Des Moines, City Of SeaTac, Des Moines Creek Basin Plan, Interlocal Agreement, King County, Port Of Seattle, WSDOTFolderDes Moines Creek
  • 2004-04-09

    Declaration of Peter J. Eglick in support of respondent/cross-petitioner Airport Communities Coalition’s reply in support of its emergency motion for injunctive relief pursuant to RAP 8.3

    In April 2004, the Airport Communities Coalition asked the Washington Supreme Court to halt construction work on a controversial Sea-Tac Airport runway expansion, arguing that long-standing environmental issues — including concerns about fill contamination and damage to creeks and wetlands — needed to be resolved first. The Port of Seattle maintained that a recently passed state law (SSB 5787) allowed it to proceed with certain work, such as rechanneling Miller Creek, even while the court case was still pending. Coalition attorney Peter Eglick filed a supporting declaration attaching a Seattle Post-Intelligencer article in which the Port's Aviation Director confirmed plans to begin work as early as May or June 2004.
    TagsAirport Communities Coalition, Miller Creek, Pollution Control Hearings Board, Port Of Seattle, RCAA, Supreme Court Of WashingtonFolderRCAA
  • 2004-04-08

    Declaration of John Rothnie, P.E. in opposition to Airport Communities Coalition’s motion for injunctive relief

    In 2004, John Rothnie, the Port of Seattle's Airfield Program Manager, filed a declaration opposing a request to block construction of a third runway at Seattle-Tacoma International Airport (Sea-Tac). The declaration outlines the Port's years of planning efforts, including obtaining required environmental certifications and developing a detailed Work Plan to ensure fill materials used in the runway embankment met strict water-quality standards. The Port had been moving forward with the expectation of beginning construction in 2004, following approval from the Washington Department of Ecology and the Pollution Control Hearings Board.
    TagsAirport Communities Coalition, Fill Dirt, Pollution Control Hearings Board, Port Of Seattle, RCAA, Third RunwayFolderRCAA
  • 2004-04-08

    Declaration of Gillis E. Reavis in opposition to Airport Communities Coalition’s motion for injunctive relief

    This document is a Declaration by attorney Gillis E. Reavis filed in the Supreme Court of Washington in a case where the Port of Seattle challenged the Pollution Control Hearings Board, Airport Communities Coalition, and Citizens Against SeaTac Expansion. The declaration opposes a motion for injunctive relief and attaches excerpts from the U.S. Army Corps of Engineers' Record of Decision for a Port of Seattle Section 404 wetlands permit (1996-4-02325), which covers environmental reviews under the Clean Water Act, Endangered Species Act, and other federal statutes related to airport expansion. The underlying dispute centers on regulatory approvals for Sea-Tac Airport development and its environmental impacts on surrounding communities.
    TagsAirport Communities Coalition, Army Corp of Engineers, Citizens Against Sea-Tac Expansion, Pollution Control Hearings Board, Port Of Seattle, RCAAFolderRCAA
  • 2004-04-08

    Declaration of Robin V. Kordik in opposition to Airport Communities Coalition’s motion for injunctive relief

    In this 2004 declaration filed with the Washington Supreme Court, Robin V. Kordik, a Senior Environmental Program Manager for the Port of Seattle's Aviation Division, describes efforts to identify wetland mitigation sites near Sea-Tac Airport in connection with the airport's Third Runway construction project. A study by environmental firm Parametrix assessed 89 potential mitigation locations but concluded that no suitable new sites were available in the affected sub-basins that met the Pollution Control Hearings Board's criteria for sustainability and public safety. The declaration was submitted in opposition to a motion for injunctive relief brought by the Airport Communities Coalition.
    TagsAirport Communities Coalition, Auburn Wetland, PCHB, Port Of Seattle, RCAA, Third RunwayFolderRCAA
  • 2004-04-08

    Declaration of Michael Feldman in opposition to Airport Communities Coalition’s motion for injunctive relief

    This 2004 declaration by Michael Feldman, Deputy Managing Director of the Port of Seattle's Aviation Division, was submitted to the Washington State Supreme Court in opposition to a motion for injunctive relief filed by the Airport Communities Coalition. Feldman, who oversaw technical, environmental, and regulatory compliance at Seattle-Tacoma International Airport (Sea-Tac), describes the airport's Master Plan — adopted in 1996 — which includes the addition of a third runway and other facility expansions to address growing regional air travel demand. The declaration provides context for the decade-long planning and environmental review process behind Sea-Tac's expansion efforts.
    TagsAirport Communities Coalition, Pollution Control Hearings Board, Port Of Seattle, RCAA, Sea-Tac Airport, Third RunwayFolderRCAA

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Upcoming Events

  • Port of Seattle Regular Commission Meeting September 22, 2026
    Add to CalendarMTuesday Sep 22: 12:00pm
    17801 International Blvd, Seattle, WA 98158
    2026 09 22 rm packet pdf

    Order of Business 10:30 a.m. 1. Call to Order 2. Executive Session – if necessary, pursuant to RCW 42.30.110 (executive sessions are not open to the public) 12:00 p.m. – Public Session Reconvene or Call to Order and Pledge of Allegiance 3. Approval of the Agenda 4. Special Orders of the Day 4a. Presentation of

    [...]
  • Highline Forum Agenda – September 23, 2026
    Add to CalendarMWednesday Sep 23, 2:30pm - 4:30pm
    City of Des Moines, Police Services Building,
    Highline forum agenda final 23sept2026 pdf

    Highline Forum Agenda Theme: Part 150 Update and PortJobs Overview 2:30pm – Convene Meeting/Introductions Port Co-Chair, Commissioner Mohamed 2:35pm – Public Comments Audience The meeting will be held in person and virtually. Those wishing to provide public comment may: 1) Deliver public comment via email; 2) Deliver public comment via Microsoft Teams; or 3) Deliver

    [...]

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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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