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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.
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  • Everything you think you know about the airport is wrong.

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  • 2024-09-12

    Public hearing for Des Moines Creek Business Park West: Declaring Tract C surplus, approving Purchase and Sale Agreement and approving Trail Easement

    The Des Moines, WA City Council held a public hearing on September 12, 2024 to consider selling a small city-owned parcel called 'Tract C' (19,881 sq ft) to the Port of Seattle for $690,000, its appraised fair market value, to support truck access for the Des Moines Creek Business Park West development near Seattle-Tacoma International Airport. The sale is part of a long-running effort to develop commercial and industrial land on Port-owned property, with the project expected to support over 600 full-time jobs. The council also considered accepting a trail easement from the Port to connect the Barnes Creek Trail to the Des Moines Creek Trail as part of the same development agreement.
    CategoriesMeetings TagsCity Of Des Moines, Des Moines Creek Business Park, Des Moines Creek Trail, Port Of Seattle, public hearingFolderDes Moines
  • 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
  • 2024-09-09

    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
  • Appendix l surface transportation 2 pdf
    2024-09-09

    SAMP NTP Environmental Review: Affected Environment: Existing Traffic Analysis Summary

    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 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.
    TagsNEPA, Port Of Seattle, SAMP, SEPA, Sustainable Airport Master Plan, WSDOTFolderAppendices
  • Appendix l surface transportation 3 pdf
    2024-09-09

    SAMP NTP Environmental Review: Affected Environment: Existing Traffic Analysis Summary

    Existing conditions traffic operational analysis report prepared by Zach Wieben of Concord Engineering for Port Of Seattle, submitted to Steve Rybolt and Nic Longo, dated September 9, 2024. Part of the Seattle-Tacoma International Airport Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTP) Environmental Review under NEPA and SEPA. Analyzes 108 intersections (63 signalized, 41 stop-controlled,
    TagsNEPA, Port Of Seattle, SAMP, SEPA, 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

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  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
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    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

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    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

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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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