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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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  • 2017-12-01

    King County Greenhouse Gas Emissions Inventory: A 2015 Update

    ★ 32
    This December 2017 report inventories greenhouse gas emissions across King County, Washington, providing a comprehensive 2015 update that examines emissions by sector using geographic-based and consumption-based methodologies. It was prepared by Cascadia Consulting Group and Hammerschlag & Co. LLC, covering sources such as transportation, buildings, waste, and energy use. The report tracks changes in emissions over time and analyzes key data sources to help inform county-level climate and environmental policy decisions.
    CategoriesKey Documents TagsClimate, Environment, Greenhouse gases, King County, State of Washington
  • 1992-06-26

    North SeaTac Park master plan draft

    ★
    This 1992 draft Master Plan for North SeaTac Park was submitted by landscape architecture firm Jones & Jones to the City of SeaTac and King County. The plan outlines proposed development and improvements for North SeaTac Park, a public green space in the community surrounding Seattle-Tacoma International Airport. The document reflects a collaborative effort involving city staff, elected officials, a citizen advisory committee, and King County parks representatives.
    CategoriesKey Documents TagsCity Of SeaTac, Jones & Jones, King County, Master Plan, North Sea-Tac Park, NSTP
  • 224 78 r 1981 05 13 proposed motion 81 322 notice rescinding motion 4668 pdf
    1981-05-13

    King County Council Notice: Proposed Motion 81-322 Rescinding Motion 4668, Building and Land Development File 224-78-R (Port Of Seattle Reclassification)

    ★
    Memo dated May 13, 1981 from Laura Pharr, King County Council Staff, to Parties of Record for Building and Land Development File 224-78-R, notifying them that Proposed Motion 81-322 will be considered by the King County Council on May 26, 1981 at 9:30 a.m. The motion rescinds Motion 4668, which concurred with the Zoning and
    CategoriesHistory, Key Documents Tags224-78-R, Boeing, King County, King County Council, Land Use, Paul Barden, Port Of Seattle
  • 1981-05-13

    King County Council Notice: Proposed Motion 81-322 Rescinding Motion 4668, Building and Land Development File 224-78-R (Port Of Seattle Reclassification)

    ★ 32
    In December 1979, the King County Council passed Motion 4668 approving a rezone request by the Port of Seattle (Building and Land Development File No. 224-78-R), subject to conditions including the Port providing 5 acres for a neighborhood park and agreeing not to develop a 55-acre Westside Greenbelt buffer area for ten years. In May 1981, the Council proposed Motion 81-322 to rescind and replace Motion 4668, with key differences in the conditions outlined on page 2 of each motion. The matter, which had been appealed by both the applicant and neighboring property owners, required a separate public hearing in affected communities as part of the site plan approval process.
    CategoriesHistory, Key Documents Tags224-78-R, Boeing, King County, King County Council, Land Use, Paul Barden, Port Of Seattle
  • 1980-10-22

    Letter from Oris Dunham Airport Open Use (AOU) Classification Status Update

    ★
    Letter from Port of Seattle Policy Advisory Committee Chairman Oris Dunham to Virginia Dana providing status update on the Airport Open Use (AOU) classification in King County Zoning Ordinance. The letter explains the AOU classification’s purpose for economic development near airports and community concerns that led to a recommendation for deletion from the Highline Area
    CategoriesCorrespondence, History, Key Documents TagsAirport Open Use Zoning, Highline Community Plan, King County, Land Use, Port Of Seattle
  • 1980-01-01

    Highline Community Plan: Proposed Area Zoning

    ★
    This January 1980 King County Division of Planning report proposes new zoning maps for the Highline community, located south of Seattle between I-5 and Puget Sound, to implement the Highline Communities Plan adopted in December 1977. The plan translates land use policies into specific zoning classifications covering topics such as mixed-use development, mobile home development, an Airport Open Use Zone, and landscaping guidelines. It applies only to unincorporated King County areas and was subject to public community meetings and hearings before adoption by the County Council.
    CategoriesHistory, Key Documents TagsAirport Open Use Zoning, HCP, Highline Community Plan, King County, Land Use
  • 1976-09-20

    Ordinance No. 2883: An ordinance adopting the Sea-Tac Communities Plan

    ★ 32
    King County Ordinance No. 2883, passed in September 1976, officially adopted the Sea-Tac Communities Plan as an addendum to the King County Comprehensive Plan, establishing it as the guiding policy for land use, development, and redevelopment around Sea-Tac International Airport. The plan, developed with Federal Aviation Administration grant funding and extensive community involvement, addresses noise programs, open space acquisition areas, and compatible land use in the airport's vicinity. It required coordination between King County and the Port of Seattle on any future changes, with the Highline Communities Plan designated as the official zoning guideline for implementing its land use concepts.
    CategoriesKey Documents, Legislation TagsBernice Stern, King County, North Sea-Tac Park, NSTP, Sea-Tac Communities Plan
  • Event image 2
    2026-08-15

    KCIA 2026 FOD Walk

    Join Us for the KCIA 2026 FOD Walk! Get ready to step out and enjoy an awesome in-person event all about keeping our spaces clean and safe! The FOD Walk is a great chance to connect, learn, and have fun while helping out. Whether you’re a pro or just curious, everyone’s welcome to join the
    CategoriesEvents TagsAirport, community engagement, King County, Runways
  • Dcw5yweh8qnxhkqpxuds 3780 1000
    2026-08-09

    KCIA Vision 2045 Airport Plan and Part 150 Study

    King County International Airport is planning for the future. Learn more about the Vision 2045 Airport Plan and the Part 150 Study and how to provide your input throughout the planning process. Help us plan for the future of King County International Airport King County International Airport (KCIA) is undertaking two important studies to plan
    CategoriesFrom The Web TagsAirport, Boeing Field, community engagement, FAA, KCIA, King County, Noise, Part 150
  • Mitigation bank service area pdf
    2026-07-31

    Mitigation bank service area map

    A map showing the mitigation bank service area within WRIA 9 (Water Resource Inventory Area 9), encompassing three subwatersheds: the Lower Green River Subwatershed, the Duwamish Estuary Subwatershed, and the Nearshore Subwatershed. The map displays the Green-Duwamish River and its associated streams in the greater Seattle/King County area of Washington State. An inset map shows
    TagsDuwamish River, Environment, King County, Map, State of Washington

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Upcoming Events

  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
    Zoom (Virtual Meeting)
    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

    [...]
  • Commercial Aviation Work Group
    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
    Virtual Meeting (Zoom)
    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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