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STNI
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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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  • Greenseatacpartnership
    2025-11-28

    North SeaTac Park Black Friday Tree Planting

    Join us on Black Friday for a post-Thanksgiving restoration and planting event. Volunteers will help with planting, weeding and/or mulching or some combination of all three. We will be outside and welcome everyone to come get some fresh air, help with restoration in North Seatac park and get to meet folks from around the community.
    CategoriesEvents TagsCity Of SeaTac, North Sea-Tac Park, Trees
  • 2025-11-16

    Highline Forum Topic for the coming year: Tree Canopy Reforestation (the Miyawaki method)

    Email from Sandy Hunt of Defenders of Highline Forest to Dave Kaplan proposing the Miyawaki method for tree canopy reforestation as a Highline Forum topic. Includes links to local Miyawaki forest projects and criticism of airport mitigation policies.
    TagsDefenders Of Highline Forest, Highline Forum, Port Of Seattle, SAMP, Trees
  • 2025-11-09

    City of Burien – Mathison Park Trees Update

    Mathison Park Trees Update: The Burien City Council unanimously approved sending the Port of Seattle Commission a request that they hold a special meeting to discuss the proposed removal of trees under the Port’s Flight Corridor Management Program, including six mature trees in Burien’s Mathison Park. The letter sent to the Port Commission also requests
    CategoriesFrom The Web TagsCity of Burien, Facebook, Flight Corridor Safety Program, Trees
  • Flight Corridor Safety Program

    The Port of Seattle has an ongoing program to remove trees around SEA Airport to improve safety during takeoffs and landings and replant in their place, native, low-growing trees. The first phase of work, completed in 2019, centered around trees on Port property.  The second phase of the work, centered on non-Port property, is nearing
    CategoriesFrom The Web TagsFlight Corridor Safety Program, Port Of Seattle, Trees
  • Land Stewardship Plan and Tree Replacement Standards

                In July, the Port adopted Land Stewardship Principles across Port programs and for all land uses. These principles establish value statements and guidance for decision-making when it comes to land management. In turn, the Port developed two key strategies based on the principles: Land Stewardship Plan: guides forest health and habitat connectivity enhancements, integrates capital
    CategoriesFrom The Web TagsPort Of Seattle, Trees
  • Green Des Moines Partnership

    TagsACE Fund, City Of Des Moines, Forterra, Green Cities Partnership, Trees
  • Tree Canopy Assessments 2021_04_13_RM_11b_supp-ACE Forterra Green Cities Partnership Presentation

    TagsForterra, Green Cities Partnership, Trees
  • Green SeaTac Partnership

    TagsACE Fund, City Of SeaTac, Forterra, Green Cities Partnership, Trees
  • Seattle’s growth is heating up the region — literally. See where

    By  Alison Saldanha  Seattle Times graphics reporter Summers are not what they used to be in Seattle or its suburbs. Around Lake Washington, trees are rapidly being replaced with a growing density of concrete, asphalt and other heat-absorbing surfaces in buildings, roads and other pieces of urban infrastructure. That produces what’s known as an “urban
    CategoriesFrom The Web TagsClimate, Seattle Times, Trees
  • Living in a Neighborhood with Lots of Trees Is Way More Beneficial Than You Think — Here’s Why

    Choosing the location of your home often boils down to a few crucial aspects. For some, the most important detail is the proximity to schools or hospitals. Others focus on property value appreciation. Maybe your utmost priority is the accessibility of major transit routes. But have you thought to consider the abundance of trees in the
    CategoriesFrom The Web TagsApartment Therapy, Environment, Trees

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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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