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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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  • 1998-12-30

    Auburn City Council Ordinance 5128 – Wetland

    The City of Auburn agenda bill requesting City Council adoption of Ordinance 5128, which amends the Zoning Ordinance to add Section 18.48.110 establishing criteria for wetland mitigation construction unrelated to development projects within Auburn. The amendment was prompted by a request from the Port of Seattle to construct a wetland mitigation project in northeast Auburn
    TagsArmy Corp of Engineers, Auburn Wetland, City of Auburn, Land Use, Port Of Seattle, Third RunwayFolderAuburn Wetland
  • 1998-12-23

    Order Denying Port Of Seattle’s Motion to Dismiss for Lack of Standing and Staying Action

    In a December 1998 ruling, King County Superior Court Judge Peter D. Jarvis denied the Port of Seattle's motion to dismiss a lawsuit filed by Citizens Against SeaTac Expansion, finding that the group had legal standing to challenge the Port's environmental decision regarding replacement wetlands in Auburn. The court determined that this decision was interrelated to the broader Seattle-Tacoma International Airport Master Plan Update, including the proposed Third Runway. While rejecting dismissal, the court stayed all proceedings until the Port completed all required environmental reviews under SEPA and Sections 401 and 404 of the Clean Water Act.
    TagsAuburn Wetland, CASE, Citizens Against Sea-Tac Expansion, Port Of Seattle, Third RunwayFolderCASE #98-2-23944-1 SEA
  • 1998-12-23

    EXH AR041907: Memorandum — Summary of Hydrologic Issues, Borrow Areas 1, 3, and 4, Third Runway Project, Sea-Tac Airport

    Hart Crowser memorandum (J-4978-03) dated December 23, 1998, from Michael Bailey P.E. and Michael Kenrick P.E. to Barbara Hinkle, Port Of Seattle, addressing hydrologic impacts of Borrow Areas 1, 3, and 4 for the Third Runway Project at Seattle-Tacoma International Airport. Discusses impacts on baseflow to Des Moines Creek and riparian wetlands, including runoff reduction,
    TagsACC, Barbara Hinkle, Des Moines Creek, Pollution Control Hearings Board, Port Of Seattle, Stormwater, Third RunwayFolderBox 17
  • 1998-12-10

    Supplemental Declaration of Lawrence Corvari Supporting CASE’s Consolidated Opposition Brief

    In this 1998 court declaration, Lawrence Corvari, Co-President of Citizens Against SeaTac Expansion (CASE), challenges the Port of Seattle's Auburn Mitigation Plan and its environmental review determination. Corvari argues that building replacement wetlands in Auburn rather than near the affected Miller Creek or Des Moines Creek watersheds leaves adverse environmental impacts unmitigated, harming CASE members' ability to enjoy local wildlife and a healthy environment. The declaration also corrects what Corvari describes as misrepresentations of his deposition testimony by the Port's attorneys in their Motion to Dismiss for Lack of Standing.
    TagsAuburn Wetland, CASE, Citizens Against Sea-Tac Expansion, Port Of Seattle, SEPAFolderCASE #98-2-23944-1 SEA
  • 1998-12-09

    EXH AR041914: Hart Crowser Letter to Port Of Seattle — Sea-Tac Third Runway Aquifer Compaction Analysis

    Hart Crowser letter (project J-4978-03) to Barbara Hinkle, Health Safety & Environmental Services, Port Of Seattle, dated December 9, 1998, addressing aquifer compaction beneath the proposed Third Runway embankment at Sea-Tac Airport in response to U.S. Army Corps of Engineers questions on hydrogeologic impacts. Analysis covers the Shallow Aquifer (contributing to Miller Creek base flow),
    TagsACC, Army Corp of Engineers, Barbara Hinkle, Miller Creek, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 17
  • 1998-12-08

    EXH AR026486: Memo – Site-Specific Copper Translator Development

    This December 1998 internal memorandum from Justin Kophs to Linda Logan outlines options for developing a site-specific copper translator for the Port of Seattle, summarizing EPA guidance on dissolved and total recoverable metal sampling studies. It describes recommended approaches including field partitioning studies, historical data equations, and laboratory mixing tests to measure how copper partitions between dissolved and total recoverable forms in receiving water. The memo notes that while a site-specific translator improves compliance measurement accuracy, it cannot be used to influence permit limits in the same way as a Water Effect Ratio (WER).
    TagsACC, Ecology, EPA, PCHB, Pollution Control Hearings Board, Port Of Seattle, Third Runway, Water QualityFolderBox 10
  • 1998-11-19

    Documents catalogued as published/issued in 1997

    This catalog lists documents published or issued in 1997 related to Seattle-Tacoma International Airport (Sea-Tac), covering topics such as master plan updates, environmental impact statements, noise exposure studies, and water quality reports. Key items include FAA Records of Decision, draft and final Supplemental Environmental Impact Statements, FAR Part 150 Noise Exposure and Land Use Compatibility Studies, and public comments from regional commissions and advocacy groups. The collection serves as a reference archive for researchers and stakeholders interested in Sea-Tac Airport's development, noise policy, and environmental compliance during the late 1990s.
    TagsEnvironmental Impact Statement, FAA, Port Of Seattle, RCAA, Sea-Tac AirportFolderRCAA
  • 1998-11-17

    Documents catalogued as published in 1998

    This is a catalog of 27 documents acquired by a library or archive in 1998, covering topics related to Seattle-Tacoma International Airport and its surrounding communities. The collection includes environmental reports, noise studies, NPDES water-quality permits, stormwater monitoring data, FAA safety materials, and a third-runway geotechnical study, as well as community-focused documents addressing aircraft noise impacts on local schools and residential areas. Each entry lists the document title, author or agency, original publication date, and the date it was added to the collection.
    TagsNoise, NPDES, Port Of Seattle, RCAA, Sea-Tac Airport, Third RunwayFolderRCAA
  • 1998-11-01

    EXH AR052594: Stormwater Pollution Prevention Plan — Seattle-Tacoma International Airport, Port Of Seattle

    Stormwater Pollution Prevention Plan (SWPPP) for Seattle-Tacoma International Airport (Sea-Tac Airport), prepared by Port Of Seattle, originally November 1998 with Revision 1 (April 1999) and Revision 2 (December 2001). AR 052594. Covers drainage system description, potential pollution sources and Best Management Practices (BMPs) for aircraft servicing, ground anti-icing/deicing of roads and paved surfaces, snow storage,
    TagsACC, Deicing, NPDES, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, StormwaterFolderBox 22
  • 1998-11-01

    Exhibit 2089: Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport, June 1997–June 1998

    Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport (STIA) covering the period June 1, 1997 through June 30, 1998, prepared by Port of Seattle, received by Washington State Department of Ecology on December 1, 1998 (AR 033384). Report covers stormwater sampling results from airport subbasins including SDN2, SDS1, SDE4, and Taxi Yard; analytes include fats/oils/grease
    TagsACC, Deicing, Ecology, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, StormwaterFolderBox 13

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  • 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

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    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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