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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.

TagSea-Tac Airport(1001)

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  • Sea-Tac Airport Vicinity Map With Phase 1 Construction and Port Sites

    Aerial map of Seattle-Tacoma International Airport identifying labeled construction and port sites (P-1 through P-6, including P-3a and P-3b) with Phase 1 Construction Sites outlined in yellow and Port Sites P-4 and P-5 outlined in red. The map shows three parallel runways (16R-34L, 16C-34C, 16L-34R), surrounding roads including Highway 509, Highway 518, and Pacific Highway, and the Port Property Boundary marked with a dashed white line.
    TagsConstruction, Map, Port Of Seattle, Runways, Sea-Tac Airport
  • Permanent Noise Monitor Locations as of 2020

    A map published by the Port of Seattle showing the locations of 25 noise monitoring stations surrounding Seattle-Tacoma International Airport (Sea-Tac). Monitoring sites span multiple communities including Seattle, Burien, SeaTac, Des Moines, Federal Way, Medina, Mercer Island, and Auburn, with each location identified by a number and street address.
    TagsMap, Noise, Noise Monitors, Port Of Seattle, Sea-Tac Airport
  • NMT locations as of 2018

    A map published by the Port of Seattle showing the locations of 25 numbered noise monitoring stations surrounding Seattle-Tacoma International Airport (Sea-Tac). Monitoring sites span communities including Seattle, Burien, SeaTac, Des Moines, Mercer Island, Medina, Federal Way, and Auburn, with specific addresses provided for each location.
    TagsMap, Noise, Noise Monitors, Port Of Seattle, Sea-Tac Airport
  • Sea-Tac Airport Three Parallel Runway Diagram

    Aerial diagram of Seattle-Tacoma International Airport (Sea-Tac) showing three parallel runway pairs labeled 16L/34R, 16C/34C, and 16R/34L, with runway lengths annotated: 11,901', 9,426', and 8,500' respectively. A compass rose is visible in the upper right corner.
    TagsAirport Layout Plans, Map, Runways, Sea-Tac Airport
  • Airport Runway Layout Diagram (For Illustration Purposes Only) — Terminal, Tower, Customs, and Mid-Field Cargo Complex

    This is an airport diagram showing multiple runways including one labeled 10502 x 199 feet and another 9500 x 150 feet, with facilities marked including a Main Terminal, U.S. Customs, Tower, Mid-Field Cargo Complex, and General Aviation Parking. Runway end identifiers visible include 10, 28, 15R, 33L, 33R, and 75L, consistent with a large international airport layout, though no airport name or ICAO/IATA code is explicitly shown.
    TagsAirport Layout Plans, History, Map, Runways, Sea-Tac Airport
  • 2022-08-21

    Tango Taxiway

    A large lighted X-shaped runway closure marker mounted on a mobile orange tower unit, positioned on an airport tarmac. The device uses orange panel boards forming an X pattern along with black light fixtures mounted on yellow arms, consistent with FAA-standard runway closure markings used to signal that a runway is closed to aircraft.
    TagsFAA, Ground Operations, Runways, Sea-Tac Airport, Tango Taxiway, Taxiways
  • 2022-08-20

    Background: Racial and economic inequities in birth outcomes

    A University of Washington Epidemiology researcher, Anna Harrington, presents findings showing that communities near Seattle-Tacoma International Airport have higher rates of preterm births and are home to a disproportionate share of King County's people of color and low-income residents. The presentation proposes a qualitative research study to explore how airport community stakeholders perceive the public health risks of SeaTac air pollution on pregnant people, and what barriers they face in reducing that exposure. The study aims to understand whether risk perceptions and mitigation strategies differ based on the racial identity and income level of pregnant individuals.
    TagsEnvironmental Justice, King County, Sea-Tac Airport, University Of Washington
  • Sea Tac Communities Plan 1600

    A land use planning map produced under the Sea-Tac Communities Plan, sponsored by the Port of Seattle and King County, showing zoning categories (residential, commercial, office, airport facility, open space, etc.) for the area surrounding Seattle-Tacoma International Airport. The legend identifies uses including air terminal/related business, highway-oriented business, community retail, industry, and key circulation features, with a scale bar indicating coverage at 1:500 to 6,000 feet.
    TagsKing County, Land Use, Map, Sea-Tac Airport, Sea-Tac Communities Plan
  • 1164213

    A black-and-white photograph taken at an unusual angle showing a chain-link fence line and a 'ROAD CLOSED' sign posted along what appears to be a road or pathway. The image appears to document infrastructure or access restrictions, possibly related to airport perimeter or noise-affected property.
    TagsAirport, Land Use, Sea-Tac Airport
  • DNL65 NEM Part 150 Noise Contour Boundary 2018 Pages from 2016_10_11_SM_6b_supp

    Slide 7 from a Sea-Tac Airport presentation comparing the 65 Day Night Level (DNL) noise contours for 1998 (blue outline) and 2018 (red outline), overlaid on a regional map. The caption notes that the 2018 contour is smaller than the 1998 contour due to quieter aircraft technology.
    TagsDNL65, Noise Countour, Part 150, pos_sm_2016_10_11, Sea-Tac Airport

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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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