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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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  • Stcp chapter 6 pg 22 sea tac communities plan

    Sea-Tac Communities Plan Chapter 6 Page 22 — Southeast Conversion Area Map

    This is page 22 (section 6.6.4) of the Sea-Tac Communities Plan, sponsored by the Port of Seattle and King County. The map depicts the Southeast Conversion Area near Seattle-Tacoma International Airport, showing grid cells, acquisition areas, current airport lands, key circulation features including S.R. 509 and South Airport Access road, and named landmarks such as Angle Lake Elementary, Lowe's Terrace, Des Moines Creek, and street references including S. 188th St. and S. 200th St.
    TagsDes Moines Creek, Map, Sea-Tac Airport, Sea-Tac Communities Plan, STCPFoldermaps
  • Stcp chapter 6 pg 12 sea tac communities plan

    Sea-Tac Communities Plan Chapter 6 Page 12 — North Conversion Area Map

    This is page 12 (document reference 6.6.4, POS 21178) of the Sea-Tac Communities Plan, co-sponsored by the Port of Seattle and King County. The map depicts the North Conversion Area near Seattle-Tacoma International Airport, showing current airport lands, grid cells subject to noise-criteria program application, conversion area boundaries, key circulation features, the Ferrucci Addition, a postal facility, Riverton Heights Elementary, S. 152nd and S. 154th Streets, 24th Ave S., 32nd Ave S., Pacific Highway South (SR 99), the North Airport Freeway, and SR 518.
    TagsKing County, Map, Port Of Seattle, Sea-Tac Airport, Sea-Tac Communities PlanFoldermaps
  • Stcp chapter 6 pg 6 sources of water quantity problems des moines creek

    Sea-Tac Communities Plan: Des Moines Creek Drainage Sub-Areas and Runoff Sources

    A planning map from the Sea-Tac Communities Plan (document POS 21002, section 6.3.3) showing drainage sub-areas for Des Moines Creek, with impervious surface factors ranging from under 20% to 50% or greater, and annotating that 80% of total runoff originates from the northern sub-areas and 20% from the southern sub-areas. Sponsored by the Port of Seattle and King County.
    TagsDes Moines Creek, King County, Map, Sea-Tac Communities Plan, StormwaterFoldermaps
  • Stcp chapter 6 pg 5 theoretical modified and applied urban center diagrams

    STCP Chapter 6 Urban Center Diagrams: Theoretical, Modified, and Applied Models

    A planning document page comparing three urban center models — theoretical, modified, and applied — each with accompanying schematic maps illustrating land use proportions, hierarchy, transportation systems, and environmental determinants. The diagrams appear to be from an urban planning study, possibly related to land use and transportation analysis near an airport or metropolitan area, numbered page 5 under section 6.1.0.
    TagsLand Use, Map, STCPFoldermaps
  • Aaa 2018 ILA port of seattle and city of seatac 25
    2026-07-04

    SAMP NTP: 31 projects by the numbers

    It’s all about construction permits The Sustainable Airport Master Plan Near Term Projects Draft Environmental Impact Statement is a description of the effects of the largest expansion in airport history. But at bottom, it consists of thirty-one construction projects. What we find striking is the absence of detail on most of those projects. In most
    CategoriesExplainers, News Stories Tagsbeta, Map, SAMP Draft SEPA EIS
  • Stcp chapter 6 pg 9 north reinforcement area program application 1

    Sea-Tac Communities Plan: North Reinforcement Area Program Application

    This planning map, document number 6.6.5, is from the Sea-Tac Communities Plan sponsored by the Port of Seattle and King County. It depicts the North Reinforcement Area program application, showing grid-cell zones color-coded by noise mitigation category—including acquisition, purchase guarantee, cost-sharing insulation, and limited cost-sharing insulation—for the residential area surrounding Seattle-Tacoma International Airport, with landmarks such as Cedarhurst Elementary, Boulevard Park Elementary, Hilltop Elementary, Glacier High, and Sunset Junior High visible.
    TagsKing County, Map, Noise Mitigation, Port Of Seattle, Sea-Tac Communities PlanFolderChapter 6.6.5
  • Sea kcia part 150 dnl contours POS noise monitors

    Map of Sea-Tac and KCIA DNL contours with Port of Seattle Noise Monitors

    This map displays noise exposure contours for Seattle-Tacoma International Airport (SEA) comparing the 1991 and 2032 DNL65 projections, alongside KCIA DNL65 and DNL70 contours near Georgetown/South Seattle. It also shows POS (Port of Seattle) permanent and portable noise monitor locations (2020–2022) across the South Seattle, Burien, SeaTac, Tukwila, and Renton areas, with runway geometry markers for KCIA and COTKU [1].
    TagsDNL65, KCIA, Map, Noise Monitors, Part 150, Sea-Tac AirportFolderNoise
  • UpgradeSEA map Upgrademain
    2026-04-23

    Upgrade SEA Airport Improvement Map

    An aerial overview of Seattle-Tacoma International Airport annotated with labeled capital improvement projects under the 'Upgrade SEA' program, including C Concourse Expansion, S Concourse Evolution, Concourse A Building Expansion for Lounges, SEA Gateway, Main Terminal Improvements Program, Baggage Optimization, Checkpoint 1 Relocation, Automated Parking Guidance System, Restroom Renovation, Roadway Improvements, Curbside Accessibility and Safety, and SEA Underground Controls Replacement. The Upgrade SEA diamond logo is visible in the lower left corner.
    TagsAirport Expansion, capital improvements, Map, Sea-Tac AirportFolderSea-Tac Airport
  • 2024 SF NAP JPG 1
    2026-04-21

    2024 South Flow Noise Abatement Procedures graphic

    A 2018 Garmin-based aeronautical chart illustrating South Flow Noise Abatement Procedures at Seattle-Tacoma International Airport, showing the Initial Departure Corridor (green lines), Arrival Corridor (red lines), and a reference point north of the SR-520 bridge, with aircraft maintaining 5 nautical miles and 3,000 feet altitude constraints.
    TagsFlight Tracks, Map, Noise Abatement Procedures, Sea-Tac AirportFolderProcedures
  • Flight Track Density

    Tagsbeta, Flight Tracks, Map

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Upcoming Events

  • Stay Grounded Event: Night trains, not night planes!
    Add to CalendarMSunday Sep 13: 12:00am
    Ntnnp social media3

    For the past two years, more than 220 initiatives from 15 countries have declared September 13th as the International day for the ban of night flights at airports. In parallel, activists across Europe have been gathering for pyjama parties for night trains – coordinated in 2024 and 2025 by Back on Track and Stay Grounded.

    [...]
  • Burien Airport Committee Meeting September 15, 2026
    Add to CalendarMTuesday Sep 15: 6:00pm
    400 SW 152nd St, Burien, WA 98166
    Burien airport committee 15 sep 2026 agenda pdf pdf

    a) Part 150 Noise Study (Emily Inlow-Hood) — 15 minutes
    b) SAMP Update and Next Steps (Brian Davis and Sarah Moore) — 15 minutes
    c) Legislative Updates — 10 minutes
       • SCA (Sarah Moore)
       • Work with Sen. Orwall (Brian Davis)
    d) StART Reorganization (Jeff Harbaugh and Karen Veloria) — 10 minutes

    [...]

[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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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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