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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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  • Dnl 2032 70
    2032-01-01

    DNL 65 Noise Contour Map — Sea-Tac Airport Area with Noise Complaint Markers

    An OpenStreetMap-based map centered on the Seattle–Tacoma (Sea-Tac) Airport area showing a highlighted corridor (shaded in orange/yellow) and a black oval outline delineating what appears to be a flight path or noise impact study zone. Clustered purple markers, likely representing noise complaint locations or monitoring stations, are visible near Burien and a southern cluster near Des Moines/Federal Way, with Sea-Tac Airport identifiable near the center of the map.
    TagsDNL65, Map, Noise Countour, Part 150, Sea-Tac AirportFolderDNL65
  • Puget sound gateway program – phase 1 of the sr 509 completion project environmental re evaluation page 343 cropped

    Puget Sound Gateway Program Phase 1 SR-509 Completion Project Environmental Re-Evaluation Map

    Map from the Puget Sound Gateway Program Phase 1 SR-509 Completion Project Environmental Re-Evaluation (page 343 cropped). Shows 2003 FEIS Alternative C2 and Phase 1 Improvements along I-5 corridor between S 272nd St and S 188th St in King County, Washington, covering Federal Way, Des Moines, SeaTac, Burien, Kent, and Tukwila. Documents interchange configurations (Full
    TagsFederal Way, King County, Map, SR509, WSDOTFolderSR-509
  • 2026-08-28

    Chapter 4 Neighborhoods Element

    Chapter 4 of the City of SeaTac's Envision SeaTac 2044 Comprehensive Plan outlines the Neighborhoods Element, which establishes goals and policies for neighborhood planning frameworks, including Neighborhood Villages, Corner Store/Mixed Use areas, and residential zones. The element addresses community design, placemaking, and 'complete neighborhood' strategies to guide how SeaTac's residential areas grow and develop through 2044. Note that this document focuses on neighborhood land use planning and is not directly related to Sea-Tac Airport noise policy.
    TagsCity Of SeaTac, community development, Comprehensive Plan, MapFolderComprehensive Plan
  • 4 neighborhoods pdf
    2026-08-28

    Chapter 4 Neighborhoods Element

    Chapter 4 of the City of SeaTac's Envision SeaTac 2044 Comprehensive Plan outlines the Neighborhoods Element, which establishes goals and policies for neighborhood planning frameworks, including Neighborhood Villages, Corner Store/Mixed Use areas, and residential zones. The element addresses community design, placemaking, and 'complete neighborhood' strategies to guide how SeaTac's residential areas grow and develop through 2044. Note that this document focuses on neighborhood land use planning and is not directly related to Sea-Tac Airport noise policy.
    TagsCity Of SeaTac, community development, Comprehensive Plan, MapFolderComprehensive Plan
  • Appendix k children8217s environmental health and safety risks socioeconomics and environmental justice NEPA final ea and SEPA page 124

    Appendix K SEPA Environmental Justice Disparities Map page 124

    Figure 5-1 from a SEPA Environmental Justice Memorandum prepared by Landrum and Brown (document no. 553-2912-002, dated April 2026) maps Washington Department of Health Environmental Health Disparities Index scores across census tracts in the Sea-Tac Airport vicinity, including Seattle, Tukwila, Burien, SeaTac, Renton, Kent, and Des Moines. The map delineates four overlapping study areas—General Study Area, Surface Transportation Study Area, Air Dispersion Study Area, and Noise Study Area (65 dB contour)—over a background showing health disparity rankings ranging from 1–5 (Low) to 10 (High), with most tracts in the project vicinity ranked 9–10.
    TagsEnvironmental Justice, Landrum & Brown, Map, NEPA, SAMP, SEPA, Sustainable Airport Master Plan, Washington State Department Of HealthFolderAppendices
  • 2026-07-14

    Sea-Tac Communities Plan: Map Supplement to Sixth Month Report — Community Trends and Characteristics, Land Use, Ground Transportation and Traffic, Aesthetic and Visual Characteristics, Natural Determinants

    This document is a map supplement to the sixth-month element report for the Sea-Tac Communities Plan, a planning study sponsored by the Port of Seattle and King County and partially funded by a federal FAA grant. It covers five key topics—community trends and characteristics, land use, ground transportation and traffic, aesthetic and visual characteristics, and natural determinants—for the communities surrounding Seattle-Tacoma International Airport. The supplement includes 1970 census tract maps of the Sea-Tac area and an errata note correcting a data classification error for Census Tract 272 related to public assistance recipients.
    TagsKing County, Map, Port Of Seattle, Sea-Tac Communities Plan, STCPFolderfinal plan
  • Planning for the airport and its environs 8216the sea tac success story8217 091977 page 9

    Second Runway Aerial Line Drawing – Planning for the airport and its environs: The Sea-Tac success story page 9

    A black-and-white site plan map labeled 'Figure 2. SEA-TAC INTERNATIONAL AIRPORT,' showing the airport's runway configuration, taxiways, terminal area, and surrounding road network. A north arrow is included in the lower left corner, orienting the map with runways running roughly east-west.
    TagsDraft, FAA, Map, Office of Environmental Quality, Peat Marwick Mitchell, Sea-Tac Communities Plan, Second RunwayFoldermaps
  • 2026-07-10

    Sea-Tac Communities Plan – Planning Maps

    The Sea-Tac Communities Plan really was a plan. Because Sea-Tac Airport was sited in a growing area, the Second Runway expansion presented huge challenges. Sea-Tac became the ‘alpha-tester’ for many FAA initiatives. The question they were trying to answer was: how can any major airport function in harmony with its surroundings? One idea, which the
    TagsLand Use, Map, Sea-Tac Communities Plan
  • Stcp chapter unk pg unknown zoning and land use map unk

    STCP Zoning and Land Use Map — Des Moines and Kent Area

    A black-and-white planning grid map (document reference POS 21231) showing residential and institutional land use in the Des Moines/Kent area south of Seattle, including landmarks such as Mt. Rainier High School, Pacific Junior High, Midway Elementary, Parkside Elementary, and Highline Community College. Major roads visible include S. 223rd St., 16th Ave. S., 24th Ave. S., Kent-Des Moines Road, and Pacific Highway South, with Des Moines city limits and Kent city limits marked.
    TagsCity of Kent, Des Moines, Land Use, Map, STCPFoldermaps
  • Stcp chapter unk pg unknown transit suburban bus routes

    STCP Suburban Bus Routes Transit Map — Routes 107, 130, 132, 136, and 432

    A transit map from the Sea-Tac Communities Plan (document section 5.5.2) showing suburban bus routes 107, 130, 132, 136, 432, and others in the Sea-Tac area. The plan was sponsored by the Port of Seattle and King County.
    TagsKing County, Map, Sea-Tac Communities Plan, STCP, transportationFoldermaps

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Upcoming Events

  • Part 150 NCP Workshop — Burien
    Add to CalendarMSaturday Oct 17: 10:00am

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — SeaTac
    Add to CalendarMMonday Oct 19: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — Des Moines
    Add to CalendarMTuesday Oct 20: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]

[See all...]


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.
read more...

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.
continue...

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