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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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  • 2024-09-09

    Appendix L: Surface Transportation Existing Conditions Report — SAMP NTP Environmental Review

    This technical report analyzes existing surface transportation and traffic conditions around Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP) Near-Term Projects Environmental Review. It examines 108 intersections — including signalized, stop-controlled, and uncontrolled locations — along key travel routes connecting the airport to surrounding communities, focusing on weekday PM peak-hour traffic volumes. The study also includes freeway analysis of SR 518 and I-5 ramps and segments at the request of WSDOT.
    TagsEnvironmental Impact Statement, NEPA, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master Plan, WSDOTFolderAppendices
  • 2024-09-09

    SAMP NTP Environmental Review: Affected Environment — Surface Transportation Existing Conditions Report

    This report analyzes existing traffic conditions around Seattle-Tacoma International Airport as part of the Sustainable Airport Master Plan (SAMP) Near-Term Projects Environmental Review. It examines 108 intersections—including 63 signalized, 41 stop-controlled, and 4 uncontrolled—along key routes connecting the airport to surrounding communities, focusing on the weekday PM peak hour (4–6 p.m.). Freeway segments of SR 518 and I-5 were also evaluated at WSDOT's request to provide a comprehensive picture of surface transportation conditions in the airport study area.
    TagsEnvironmental Review, NEPA, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master Plan, WSDOTFolderAppendices
  • 2024-09-04

    Resolution 24-9-4C: Settlement Agreement and Release — Highline Water District and Port Of Seattle Regarding Tyee Well PFAS Contamination

    Highline Water District reached a settlement with the Port of Seattle after PFAS chemicals, likely originating from Seattle-Tacoma International Airport operations, were found to have contaminated the District's Tyee Well, forcing the District to suspend well operations in June 2022. The contamination required the District to purchase more expensive replacement water from Seattle Public Utilities, and new EPA regulations finalized in 2024 further prohibited resuming well use without installing costly treatment facilities. The two parties negotiated a mutual release of claims to resolve the District's operational and financial losses resulting from the contamination.
    TagsHighline Water District, PFAS, Port Of Seattle, Sea-Tac Airport, Washington State Department Of Health, Water QualityFolderWater
  • SR-509 Surplus, a tale of two cities

    Background information on SR-509 WSDOT Surplus purchases by SeaTac and Des Moines along the 18th Ave Corridor For decades WSDOT owned surplus property along a corridor roughly parallel to 18th Ave., from 194th St. in SeaTac south through Des Moines as part of a previous plan for SR-509. The final (very different) alignment for SR-509
    CategoriesNews Stories TagsCity Of Des Moines, City Of SeaTac, Des Moines Creek Business Park, Des Moines Creek Trail, Port Of Seattle
  • 2024-08-26

    Port of Seattle Updates (outage)

    Currently the Port of Seattle/Seattle-Tacoma International Airport (SEA) website is down as part of the system outages that began Saturday, August 24. Until the website is fully restored, please check this page for official statements and updates. The Port of Seattle is experiencing certain system outages, indicating a possible cyberattack. The Port isolated critical systems
    CategoriesFrom The Web TagsPort Of Seattle, Sea-Tac Airport
  • 2024-08-25

    Sea-Tac Airport officials confirm cyberattack disrupted service, websites

    By  Caitlyn Freeman  and  Rebecca Moss Seattle Times staff reporters Seattle-Tacoma International Airport officials confirmed Sunday that an apparent cyberattack took down websites, email and phone services at the airport and Port of Seattle this weekend, disrupting travel plans. The outages were first reported Saturday morning and stretched into Sunday afternoon, with officials offering no
    CategoriesFrom The Web TagsPort Of Seattle, Sea-Tac Airport, Seattle Times
  • 2024-08-13

    Port of Seattle Officials and Mascot Photo

    Four men pose with a costumed mascot character named 'Bert' (visible on hat star and jersey letter 'B') near a waterfront location. The man at far right wears a blue jacket bearing what appears to be a 'City of' logo/patch; the mascot's jacket also reads 'SMILE' on a button.
    CategoriesPeople TagsPort Of SeattleFolderDes Moines Creek
  • 2024-08-13

    Des Moines Creek Basin Plan Event

    Ralph Shape, Councilmember, speaks at a podium bearing the Des Moines Creek Basin Plan logo. The outdoor setting appears to be near a waterway, consistent with a watershed or environmental planning announcement.
    CategoriesEvents TagsPort Of SeattleFolderDes Moines Creek
  • 2024-08-13

    Group photo with SeaTac Airport mascot Bert

    A group of approximately nine adults poses outdoors near a waterfront railing with a large decorative fish sculpture or costume character named 'Bert' (visible star badge with the name). The overcast sky and water in the background suggest a Pacific Northwest coastal or waterfront location.
    CategoriesEvents TagsActivism, Port Of SeattleFolderDes Moines Creek
  • 2024-08-13

    North Sea-Tac Park Special Council Meeting Presentation

    At a Special Council Meeting on August 13, 2024, the City of SeaTac presented an overview of efforts to potentially acquire North SeaTac Park (NSP) from the Port of Seattle, following a 2022 City Resolution exploring its feasibility. The presentation outlined what is known and unknown about the park, noting that two letters had been sent to the Port Commission and a formal discussion was planned for an upcoming Joint Airport Communities (JAC) meeting. Council was asked to provide direction on how to prioritize the acquisition effort relative to other City projects, as no detailed feasibility analysis had yet been completed.
    TagsCity Of SeaTac, JAC, North Sea-Tac Park, NSTP, Parks, Port Of SeattleFolderNSP Presentation 20240813

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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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