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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.

Tagairport issues(15)

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  • 2026-02-02

    2026 City of Des Moines City Council State Legislative Priorities

    Des Moines City Council’s legislative priorities for the 2026 state legislative session, covering public safety funding, airport impact mitigation, historic preservation, ferry development, and local government financial resources. The city is not requesting earmarks for public works projects due to the challenging state budget.
    Tags2026 legislative session, airport issues, City Of Des Moines, Highline Forum, Port Of Seattle
  • Program Idea Weighting – Phase II Process

    Introduction and methodology document explaining the program idea weighting system for Sea-Tac and Communities planning alternatives. Describes the Phase II process for formulating and evaluating alternatives, including criteria for possibility of application, acceptance factor, and implementation probability.
    TagsAdvisory Committees, Airport Committees, airport issues, Sea-Tac Airport
  • 2025-02-14

    Washington State Air Pollution Map – Airport Communities

    Map of Washington State showing cumulative levels of criteria air pollution with numbered markers indicating 16 airport-impacted communities. The map uses green shading to represent pollution levels from highest to lowest, with communities like Ellensburg, Everett, South King County, and others marked with red numbered circles.
    CategoriesExplainers, Resources TagsAir Quality Monitors, Airport Communities Coalition, Airport Impacted Communities Act, airport issues, Airports, Aviation Emissions
  • Gao 24 107001 Pdf
    2024-09-01

    AIR TRAFFIC CONTROL – FAA Actions Are Urgently Needed to Modernize Aging Systems

    GAO report to Congressional committees identifying that 76% of FAA’s air traffic control systems are unsustainable or potentially unsustainable, with 58 systems having critical operational impacts on safety and efficiency. The report highlights urgent need for modernization following a 2023 national airspace shutdown due to aging system outage.
    CategoriesFrom The Web, Key Documents TagsAir Traffic Control, Airport, airport issues, Airport Noise Law, ATC, Aviation International News
  • 2022-08-20

    Waterfront Community with Aviation Infrastructure

    Image shows a waterfront community with residential buildings, beach area, and forested hills in the background. Several people are visible on the beach, and the scene appears to be in the Pacific Northwest region near what could be an airport-impacted community.
    Tagsaircraft, Airport, airport issues
  • 2020 01 28 SM 8A 1 Pdf
    2020-01-28

    Commission Agenda Memorandum – Flight Corridor Safety Program 2019 contracts, agreements, and real property interests

    Port of Seattle commission agenda item requesting authorization for the Executive Director to execute contracts and agreements related to the Flight Corridor Safety Program 2019, including removal of flight path obstructions, tree replanting, and property rights acquisition. The total cost estimate is $5,895,000 for a total project cost of $8,500,000.
    CategoriesKey Documents TagsAir Rights, Airport, airport issues, Airport Layout Plans, Port Of Seattle
  • 2003-04-18

    The Effects of Aircraft Noise and Road Traffic Noise on Reading Comprehension and Attention: The Ranch Study

    A European research study examining the dose-effect relationships between aircraft noise, road traffic noise, and their combinations on reading comprehension and sustained attention in 9-10 year old children across the Netherlands, Spain, and the United Kingdom. The study found significant impairment in reading comprehension associated with aircraft noise exposure but no effects from road traffic
    CategoriesFrom The Web TagsAcademic Journals, aircraft, airport issues, Airport Noise Report, Aviation Noise & Emissions Symposium
  • 2003-04-18

    The Effects of Aircraft Noise and Road Traffic Noise on Reading Comprehension and Attention: The Ranch Study

    A European research study examining the dose-effect relationships between aircraft noise, road traffic noise, and their combinations on reading comprehension and sustained attention in 9-10 year old children across the Netherlands, Spain, and the United Kingdom. The study found significant impairment in reading comprehension associated with aircraft noise exposure but no effects from road traffic
    CategoriesFrom The Web TagsAcademic Journals, aircraft, airport issues, Airport Noise Report, Aviation Noise & Emissions Symposium
  • 2002-06-03

    Legal Analysis of King County’s Role in Des Moines Beach Park Conveyor Belt Proposal

    Legal counsel James L. Brewer analyzes King County’s jurisdictional authority regarding a proposed fill material conveyor belt operation at Des Moines Beach Park. The memo examines property interests, covenants requiring park use only, and concludes the proposed 30-month project would be inconsistent with park purposes due to significant disruption.
    CategoriesKey Documents, Litigation TagsAirport Communities Coalition, Airport Expansion, airport issues
  • 2002-05-01

    C.A.S.E. MEETING MINUTES May 1, 2002

    Meeting minutes from Citizens Against Sea-Tac Expansion discussing various airport-related issues including geese shooting near schools, conveyor belt project opposition, arsenic contamination concerns, and updates from local representatives on legislative matters and environmental issues.
    CategoriesKey Documents, Organizations TagsAirport Communities Coalition, Airport Community Ecology Fund, Airport Expansion, airport issues, Arsenic

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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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