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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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  • Everything you ever wanted to know about Flight Paths

    You can think of any major airport as the most extravagant short-term parking lot imaginable, with an equally extravagant quickie-mart. Both are connected to a 1super-highway. But instead of one on and off ramp, there are many known as Standard Instrument Departures (SIDs) and Standard Terminal Arrival Routes (STARs). SIDs are the flight procedures that
    CategoriesExplainers Tagsbeta, Map
  • 2026 04 21 at 11 18 29 Ejscreen
    2026-02-19

    When Federal environmental maps go dark

    The benefits and consequences for airport communities In January 2025, the Trump administration began removing content from federal websites following Executive Order 14151. The order directed all government agencies to terminate DEI and environmental justice–related programs. These include environmental justice and climate mapping using a nationally consistent dataset for evaluating the socioeconomic impacts of airports.
    CategoriesChange The Culture, News Stories TagsEnvironmental Justice, Executive Orders, Map
  • Ejscreen

    EJScreen Environmental Justice Screening and Mapping Tool (Version 2.3)

    This is an 1unofficial copy of EJScreen hosted by the Public Environmental Data Partners. Some links and text may incorrectly suggest that this site is affiliated with the US Government. The EJScreen Tool was an EPA web application taken down in January of 2025 as part of Executive Order 14151. It was described as “an
    CategoriesFrom The Web TagsEJScreen, Environmental Justice, EPA, Executive Orders, Map
  • End of Block Seapart150 Colored

    GIS Parcel Map — Akinlosotu Short Plat Area Near 10th and 12th Avenue South, Sea-Tac Airport Noise Review

    A GIS map showing residential parcels in the Sea-Tac Airport vicinity, centered on 10th and 12th Avenue South between South 233rd Court and South 235th Place. Green-shaded zones with question mark markers appear to indicate properties under noise impact review or acquisition consideration, bisected by a blue diagonal line likely representing a noise contour or jurisdictional boundary; street addresses and the 'Akinlosotu Short Plat' label are visible.
    TagsLand Use, Map, Noise Mitigation, Part 150, Sea-Tac AirportFolder2024
  • End of Block Seapart150 Block Color

    GIS Parcel Map with Noise Contour Boundary Near South 234th Place, Sea-Tac/Des Moines Area

    A GIS map showing residential parcels near South 234th Place in the SeaTac/Des Moines area, with a blue diagonal line indicating a noise contour or flight path boundary related to Sea-Tac Airport. Street addresses and parcel numbers are visible, including properties along 10th Avenue South, 12th Avenue South, and South 234th–235th Places, with overlapping green and blue shaded zones likely representing different noise exposure levels. The 'Akinlosotu Short Plat' subdivision is labeled in the upper right area.
    TagsMap, Noise Countour, Part 150, Sea-Tac AirportFolder2024
  • End of Block Seapart150.Com

    End of Block example from 2032 Part 150

    A GIS map showing residential parcels in the South 234th Place corridor near 10th and 12th Avenue South in Des Moines/SeaTac, Washington, with a blue diagonal line indicating a noise contour or flight path boundary overlaid on the street grid. The shaded (blue) zone to the right of the line likely represents an airport noise impact area associated with Seattle-Tacoma International Airport policy mapping.
    TagsDes Moines, Map, Noise Countour, Part 150, Sea-Tac AirportFolder2024
  • 2025-09-30

    South King and Port Communities Fund (SKPCF) Environmental Improvement Program (EGP) – Cycle V: Exhibit 1 – Eligibility and Priority Area Map

    This document presents the eligibility and priority area map for Cycle V of the South King and Port Communities Fund (SKPCF) Environmental Improvement Program (EGP), administered by the Port of Seattle. The map outlines the geographic boundaries of communities in South King County — including areas such as Burien, Tukwila, Renton, Des Moines, Kent, and Federal Way — that are eligible for environmental improvement funding, likely related to noise and pollution impacts from Sea-Tac Airport and port operations. Priority zones are visually highlighted to help direct resources toward the most affected neighborhoods within the program's service area.
    TagsDes Moines, Federal Way, Map, Port Of Seattle, South King County FundFolderGrant Programs
  • Port Properties and Trees mapped

    Properties, trees and the environment around the airport As the icon indicates, this is a beta project, one of a series of visual representations on community impacts. This indicates Port-owned properties around the airport, most purchased with FAA grants. It also displays the status of trees that are subject to removal and/or replacement via the
    CategoriesResources Tagsbeta, Map
  • Sound Transit Airport Station Map

    Official transit access map for Seattle-Tacoma International Airport showing the SeaTac/Airport Station connection via Skybridge 6 at Parking Garage Level 4. The map depicts the pedestrian route along S 176th Street and International Blvd, with marked locations for Link Station, bus stops, pick-up zones, ORCA ticket machines, and elevators.
    TagsMap, non-aviation transportation, Sea-Tac Airport, Sound TransitFolderSea-Tac Airport
  • Port Properties and Trees GIS

    A map centered on Seattle-Tacoma International Airport (Sea-Tac) showing clusters of red circles and green dots overlaid on the airport and surrounding communities including Burien, SeaTac, Tukwila, and Normandy Park. The blue outlined polygon appears to delineate a municipal or study boundary, and the red/green markers likely represent noise complaint locations or flight track data points used in airport noise policy analysis.
    TagsMap, Port Of Seattle, Sea-Tac Airport, TreesFolderProperties

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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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    "Sea-Tac Communities Plan: Chapter 3.1 Background" — , 2022

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