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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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  • Protest Near Sea-Tac Airport Over Gaza War

    Protesters holding Palestinian flags and a banner reading 'Our Taxes Are Funding Genocide' block a multi-lane highway near what appears to be Sea-Tac Airport. The demonstration has caused a significant traffic backup with dozens of vehicles stopped on the roadway.
    TagsActivism, Protest, Sea-Tac AirportFolderPublic Safety
  • Port Of Seattle Police Ford F-150 (Unit #2149) in Sea-Tac Airport Parking Garage

    A Port of Seattle Police Ford F-150 (unit #2149) is parked in what appears to be a multi-level parking garage, likely at Seattle-Tacoma International Airport. The Port of Seattle Police badge/logo is clearly visible on the hood of the black patrol vehicle.
    TagsParking, Port Of Seattle, Public Safety, Sea-Tac AirportFolderPublic Safety
  • 2024-04-11

    Climate Protest Signs with Fossil Free Future Theme

    Protesters march through an urban area carrying signs reading 'Fossil Free Future' and 'Stop the Money Pipeline to Climate Destruction.' Many participants wear face masks, suggesting the event took place during the COVID-19 pandemic era.
    CategoriesEvents TagsActivism, Alternative Fuels, Aviation Emissions, Climate, Fossil Fuels, Protest, Sea-Tac AirportFolderPublic Safety
  • 2024-04-03

    Des Moines City Hall Exterior

    Exterior view of Des Moines City Hall, address 21630, located in Des Moines, Washington — a city directly affected by Sea-Tac Airport flight operations and noise policy. The building features a covered entry walkway with wood-panel canopy, landscaped grounds, and signage reading 'Des Moines City Hall.'
    TagsCity Of Des Moines, Des Moines, Sea-Tac AirportFolderDes Moines
  • Upgrade SEA — The Next Era of Capital Projects Takes Flight

    By Aly Lande, Capital Project Marketing Specialist Picture an airport journey without long lines and overflowing crowds. You follow a predictable and easy path from curb to gate with the space, services, and amenities that make your trip just right. There is more of what you know and love about Seattle-Tacoma International Airport (SEA), plus more
    CategoriesFrom The Web TagsSea-Tac Airport
  • 2024-03-19

    Engrossed Second Substitute Senate Bill 5955: Large Port Districts—Aircraft Noise Mitigation

    Washington State's Engrossed Second Substitute Senate Bill 5955, signed into law on March 19, 2024, addresses aircraft noise mitigation for large port districts like the Port of Seattle, which operates Seattle-Tacoma International Airport. The law allows the port to repair or replace noise mitigation equipment that is no longer functioning properly or has caused structural damage to nearby properties, using non-federal local funding. It also acknowledges that communities of color — including Black, Hispanic, Native Hawaiian, and Pacific Islander residents in King County — are disproportionately impacted by airport noise, and establishes a state partnership to improve equity and responsiveness in noise mitigation efforts.
    TagsLegislation, Noise Mitigation, RCW 53.54.020, SB5955, Sea-Tac Airport, Washington State LegislatureFolderSB5955
  • 2024-03-13

    Final Bill Report: E2SSB 5955 — Mitigating Harm and Improving Equity in Large Port Districts

    Washington State E2SSB 5955 creates the Port District Equity Fund to help large port districts, such as the Port of Seattle, repair or replace failing aircraft noise mitigation equipment in nearby homes and properties. The Department of Commerce administers the grant program, which requires port districts to match at least half of state funding, and mandates annual public reporting on inspections and repairs. The program is set to expire July 1, 2029, with a legislative audit review, and will be fully repealed by July 1, 2030.
    TagsDepartment Of Commerce, Legislation, Noise Mitigation, SB5955, Sea-Tac Airport, Washington State LegislatureFolderSB5955
  • 2024-03-13

    IWS Alternatives Analysis Technical Memorandum: Seattle-Tacoma International Airport

    Gresham Smith engineers prepared this March 2024 technical memo for the Port of Seattle, analyzing cost-saving alternatives for planned upgrades to Seattle-Tacoma International Airport's Industrial Wastewater Treatment Plant (IWTP). The study evaluated options for managing airport deicer runoff while maintaining compliance with water discharge permits, using 52 years of historical weather data to simulate system performance. Note: despite its placement in an airport policy archive, this document addresses industrial wastewater and stormwater management rather than noise policy.
    TagsDeicing, NPDES, Port Of Seattle, SAMP, Sea-Tac AirportFolderGrid
  • Iws altsanalysis techmemo pdf
    2024-03-13

    IWS Alternatives Analysis Technical Memorandum: Seattle-Tacoma International Airport

    Gresham Smith engineers prepared this March 2024 technical memo for the Port of Seattle, analyzing cost-saving alternatives for planned upgrades to Seattle-Tacoma International Airport's Industrial Wastewater Treatment Plant (IWTP). The study evaluated options for managing airport deicer runoff while maintaining compliance with water discharge permits, using 52 years of historical weather data to simulate system performance. Note: despite its placement in an airport policy archive, this document addresses industrial wastewater and stormwater management rather than noise policy.
    TagsDeicing, NPDES, Port Of Seattle, SAMP, Sea-Tac AirportFolderGrid
  • 2024-03-01

    Sustainable Airport Master Plan – Near-Term Projects: Noise Technical Report

    This Noise Technical Report, prepared by Landrum & Brown for the Port of Seattle in March 2024, analyzes noise impacts associated with near-term projects outlined in the Sustainable Airport Master Plan for Seattle-Tacoma International Airport. It is part of a broader Appendix J covering noise and noise-compatible land use, which also includes a Noise Modeling Protocol and a Construction Noise Technical Report. The report provides technical assessments to support planning decisions related to aircraft and construction noise in communities surrounding Sea-Tac Airport.
    TagsLandrum & Brown, NEPA, Noise, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderAppendices

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Upcoming Events

  • Part 150 NCP Workshop — Burien
    Add to CalendarMSaturday Oct 17: 10:00am

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — SeaTac
    Add to CalendarMMonday Oct 19: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — Des Moines
    Add to CalendarMTuesday Oct 20: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]

[See all...]


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.
read more...

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.
continue...

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