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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.

TagMTCA(83)

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  • 2001-06-19

    EXH AR050641: Draft Technical Memorandum — Analysis of Preferential Ground Water Flow Paths Relative to Proposed Third Runway, STIA

    Draft technical memorandum prepared by Associated Earth Sciences, Inc. (AESI, Project No. BV99122C) for Port Of Seattle, dated June 19, 2001, analyzing preferential ground water flow paths relative to the proposed Third Runway at Seattle-Tacoma International Airport (STIA). Responds to Washington Department of Ecology (Ecology) request regarding whether contaminated ground water below the Aviation Operations
    TagsACC, Ecology, MTCA, Pollution Control Hearings Board, Port Of Seattle, Third Runway, Water QualityFolderBox 21
  • 2001-06-13

    EXH AR017301: Email on Acceptable Fill Criteria Language for Draft 401 Certification — MTCA Requirements for Sea-Tac Airport Third Runway

    Internal deliberative email from Chung K. Yee to Kevin Fitzpatrick (cc: Craig E. Thompson, Curtis A. Dahlgren, Tim Nord), dated June 13, 2001, regarding acceptable fill criteria language for the Draft 401 Certification for the Seattle-Tacoma International Airport Third Runway project. Pete Kmet of HQ/TCP recommended MTCA (Model Toxics Control Act) should not be used
    TagsACC, Ecology, Fill Dirt, Model Toxics Control Act, MTCA, Pollution Control Hearings Board, Third RunwayFolderBox 08
  • 2001-06-13

    EXH AR017498: Email on Acceptable Fill Criteria Language for Draft 401 Certification — MTCA Requirements for Third Runway

    Email from Chung K. Yee to Kevin Fitzpatrick (cc: Craig E. Thompson, Curtis A. Dahlgren, Tim Nord), dated June 13, 2001, regarding acceptable fill criteria language for the Draft 401 Certification for the Seattle-Tacoma International Airport Third Runway project. References June 11 discussion between Craig Thompson and Pete Kmet of HQ/TCP, who recommended MTCA (Model
    TagsACC, Ecology, Fill Dirt, MTCA, Pollution Control Hearings Board, Sea-Tac Airport, Third RunwayFolderBox 08
  • 2001-06-07

    EXH AR017497: Email Chain — Acceptable Fill Criteria Language for Draft 401 Certification, Sea-Tac Master Plan Improvements

    Email chain among Craig Thompson, Kevin Fitzpatrick, Chung Yee, Peter Kmet, Ann Kenny, and Ching-Pi Wang of Ecology NWRO Water Quality Program regarding acceptable fill criteria language for the draft 401 Water Quality Certification for the Sea-Tac Master Plan Improvements project. Discusses review of previous clean fill draft language, response to Pete Kmet’s comments and
    TagsACC, Ecology, Fill Dirt, MTCA, Pollution Control Hearings Board, Sea-Tac Airport, Water QualityFolderBox 08
  • 2001-05-30

    EXH AR017714: Email and Redline Revisions to Preferential Flowpath Technical Memorandum — Third Runway Construction

    Email from Ching-Pi Wang (Port Of Seattle) to Paul Agid, cc Roger Nye, dated May 30, 2001, transmitting redline edits to the May 8th draft of the preferential ground-water flowpath technical memorandum related to construction of the Third Runway at Sea-Tac Airport. Attached redlined memorandum (From Port to Ecology, May 30, 2001) addresses preferential flowpaths
    TagsACC, Ecology, MTCA, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Third RunwayFolderBox 08
  • 2001-05-01

    Model Toxics Control Act Cleanup Regulation: Process for Cleanup of Hazardous Waste Sites

    This Washington State Department of Ecology fact sheet explains how the Model Toxics Control Act (Initiative 97, 1989) governs the cleanup of hazardous waste sites in Washington, outlining who is liable, how sites are identified, and the options available for conducting cleanups. Potentially liable parties — including past and present owners, operators, and those who transported or disposed of hazardous substances — may clean up sites independently or work cooperatively with Ecology through formal agreements such as consent decrees. Note: this document concerns hazardous waste site cleanup regulation and does not contain information related to Sea-Tac Airport noise policy.
    TagsEcology, Model Toxics Control Act, MTCA, RCW, WACFolderEcology
  • 2001-04-30

    EXH AR023204: Memo — Black River Quarry Aggregate Testing (TPH & Metals)

    A Port of Seattle memo from April 2001 summarizes environmental testing of rock aggregate imported from the Black River Quarry for use in the Third Runway embankment project. Testing by environmental consultant AMEC found petroleum hydrocarbons (TPH) and elevated copper levels in some samples, prompting operational changes at the quarry including equipment cleaning and discarding the first hundred tons of rock after asphalt recycling operations. Follow-up testing confirmed that contaminant levels fell below MTCA Method A cleanup standards, and the Port halted material imports from the quarry in mid-October 2000 pending resolution.
    TagsACC, Ecology, MTCA, Pollution Control Hearings Board, Port Of Seattle, Puget Sound, Third RunwayFolderBox 10
  • 2001-04-30

    EXH AR028046: Port Of Seattle Memo — Black River Quarry TPH and Metals Testing for Third Runway Embankment

    Port Of Seattle internal memo dated 04/30/01 from Beth Clark to Paul Agid (cc: Elizabeth Leavitt, Jim Thomson) regarding rock aggregate imported from the Black River Quarry (King County, Washington), owned by Stoneway Rock & Recycling, used in the Third Runway embankment during August–October 2000. Documents AMEC and City Transfer Inc. (CTI) chemical testing for
    TagsACC, Ecology, Elizabeth Leavitt, MTCA, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 10
  • 2001-03-12

    EXH AR17739: Draft Meeting Notes — 401 Permit Decision-Making, Port Of Seattle / Ecology Meeting, March 9, 2001

    Email chain dated March 12, 2001 from Steve Alexander (ECY/Ecology) to Ann Kenny and Raymond Hellwig, forwarding draft meeting notes from a March 9, 2001 management meeting between the Department of Ecology and the Port Of Seattle regarding the 401 Certification process for Sea-Tac Airport Third Runway. Alexander clarifies that TCP (Toxics Cleanup Program) committed
    TagsACC, Clean Water Act, Ecology, MTCA, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 08
  • 2001-03-09

    EXH AR023614: ACC Letter to Ecology – No Enforcement Agreed Order #97TC-N122, 401 Certification Implications

    A March 9, 2001 letter from law firm Helsell Fetterman, representing the Airport Communities Coalition (cities of Burien, Des Moines, Federal Way, Normandy Park, Tukwila, and the Highline School District), demands that Washington State Department of Ecology enforce a 1999 Agreed Order requiring the Port of Seattle to complete groundwater contamination studies at Sea-Tac Airport. The coalition argues that the Port has failed to finish required groundwater flow and contaminant transport studies — originally due December 1999 — and that Ecology cannot legally certify the third runway project under the Clean Water Act without this data. The letter also requests a State Auditor review of how the Port spent grant money provided by Ecology to fund those studies.
    TagsACC, Airport Communities Coalition, Clean Water Act, MTCA, Pollution Control Hearings Board, Third RunwayFolderBox 10

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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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