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STNI
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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  • SAMP Draft EA: How to provide a great public comment

    1How to provide effective public comment by December 13, 2024 Because new ways for you to participate will likely become available, this article may be subject to updates. Introduction This is the second of a two-part article concerning the Sustainable Airport Master Plan Draft Environmental Assessment (SAMP Draft EA). If you’re looking for the short
    CategoriesExplainers TagsEIS, Environmental Impact Statement, SAMP, Sustainable Airport Master Plan
  • The SAMP Comment Period Explainer (Intro)

    Preparing for the October 21st Comment Period This is the first of a two-part article concerning the SAMP comment period. We’re including a few paragraphs of background because the process has been so lengthy–with many years of delay. The feedback we’ve received thus far has been confusion, partly because the information on the Port’s official
    CategoriesExplainers TagsEIS, Environmental Impact Statement, SAMP, Sustainable Airport Master Plan
  • STIA_MPU_Final_Supplemental_EIS__May_1997__Vol._3_of_3_1 Appendix G

    TagsEIS, Environmental Impact Statement, Third Runway
  • STIA Master Plan Update Final Supplemental EIS May,1997 Vol. 1 of 3 Main Appendix A-C1

    TagsEIS, Environmental Impact Statement, Third RunwayStudy TopicsAir Quality, Noise, Socioeconomics, Transportation
  • STIA Final Supplemental Environmental Impact Statement EIS MPU Vol 2 of 3 Appendices C2-F

    TagsEIS, Environmental Impact Statement, Third Runway
  • STMPU 1997 05 FSEIS Appendix_C

    TagsEIS, Environmental Impact Statement, Third Runway
  • STMPU 1997 05 FEIS Appendix_E

    TagsEIS, Environmental Impact Statement, Third Runway
  • STMPU 1997 05 FSEIS Appendix_F

    TagsEIS, Environmental Impact Statement, Third Runway
  • MOA Air Quality Monitoring Program Activities Relating To The Sea-Tac Airport Vicinity October 15, 1996

    TagsAir Quality Monitors, Ecology, EIS, PSAPCA, Puget Sound Air Pollution Control Agency, Third Runway
  • Highline Community Plan Environmental Impact Statement (draft supplemental) 1980

    TagsEIS, Environmental Impact Statement, Highline Community Plan, King County

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Upcoming Events

  • Port of Seattle Commission Meeting – Resolution No. 3848
    Add to CalendarMTuesday Apr 28: 12:00am
    Port of Seattle

    Agenda Item 10b Resolution No. 3848: Port of Seattle Participation in City of Bellevue Tax Increment Area Approval of the Port’s participation in the city of Bellevue’s tax increment area, as authorized under RCW 39.114.020. Key Points: Authorization for City of Bellevue to enact increment area up to $500,000,000 in combined assessed valuation if connected

    [...]
  • Port of Seattle Regular Commission Meeting April 28, 2026
    Add to CalendarMTuesday Apr 28: 12:00pm
    17801 International Blvd, Seattle, WA 98158
    2026 04 28 RM Packet Pdf 1

    # New Business Items
    **Order No. 2026-04:** Directs Executive Director to explore a program facilitating secure area access for union business requirements at Seattle-Tacoma International Airport.

    **Resolution No. 3848:** Approves Port's participation in City of Bellevue's Tax Increment Area.

    **Fishermen's Terminal C-15 Building Improvements:** Authorization for Executive Director to approve funding to advertise and execute a major public works construction contract for project completion.

    [...]
  • StART (SEA Stakeholder Advisory Round Table) Meeting
    Add to CalendarMWednesday Apr 29, 5:00pm - 7:00pm
    Zoom Webinar
    Start Meetingagenda 2026429 Pdf 1

    - **SAMP Environmental Review**: Detailed comparison between SEPA Environmental Impact Statement and NEPA Environmental Assessment processes for Near-Term Projects
    - **Community Roundtable Updates**: Progress report on airport stakeholder engagement initiatives
    - **Next Steps**: Implementation timeline for environmental review findings

    **Notable Action Item:**
    Public comment period opened for stakeholder input on airport development plans.

    [...]

[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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This is the first study to combine a one-year mobile monitoring campaign with PMF (Positive Matrix Factorization) analysis to simultaneously estimate source-specific air pollution exposures and emission factors of different vehicle types. This methodology can be extended to other metropolitan areas.
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