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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(1835)

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  • Stcp chapter 6 pg 14 sea tac communities plan conversion and reinforcement
    1976-06-16

    Sea-Tac Communities Plan Land Use Map — Conversion and Reinforcement Areas (1976)

    A planning map from the Sea-Tac Communities Plan (page 14, revised June 16, 1976), sponsored by the Port of Seattle and King County, depicting current airport lands, acquisition zones, conversion areas, reinforcement areas (dotted pattern), and the S.R. 509 corridor in the Sea-Tac region along Puget Sound. The map illustrates land use strategies for communities affected by Seattle-Tacoma International Airport noise and expansion.
    TagsKing County, Land Use, Map, Sea-Tac Airport, Sea-Tac Communities PlanFoldermaps
  • Stcp chapter 6 pg 22 north subarea plan land use
    1976-06-16

    Sea-Tac Communities Plan Chapter 6, Page 22 — North Subarea Land Use Map (1976)

    A detailed planning map (page 22, revised June 16, 1976) showing land use designations around Seattle-Tacoma International Airport, including a golf course (130 ac.), wetlands preserve, manufacturing park (31 ac.), community use reserves, sunset park (17 ac.), approach and clear zone, and airport reserve/buffer areas bounded by S. 128th St. to the north and the Renton–Three Tree Point Road to the south along Military Road South.
    TagsLand Use, Map, Sea-Tac Airport, STCP, Sunset ParkFoldermaps
  • 1976-05-11

    Letter from Port Of Seattle to Councilwoman Bernice Stern regarding Sea-Tac Communities Plan areas

    In a May 1976 letter to King County Councilwoman Bernice Stern, Seattle Port Commission President Henry T. Simonson outlined two key decisions regarding land adjacent to Sea-Tac International Airport. The Port ruled out acquiring the 35-acre 'west acquisition area' due to high costs, excessive development expenses, and lack of foreseeable airport-related demand, while agreeing that any existing development there must follow carefully formulated guidelines. For the 'southeast conversion area' — 85 small homes in Lowe's Terrace Subdivision — the Port acknowledged that standard acoustic insulation treatment may not be cost-effective, and flagged the neighborhood as a candidate for a special purchase guarantee program to assist with gradual land-use conversion.
    CategoriesCorrespondence TagsAirport Expansion, King County, Noise, Port Of Seattle, Sea-Tac AirportFoldermisc
  • 1976-02-06

    Sea-Tac Aerial

    Aerial photograph looking north over Seattle-Tacoma International Airport, showing the main terminal building, satellite concourses with jet aircraft at gates, and the distinctive circular/spiral parking garage structure in the foreground. Puget Sound and the Olympic Mountains are visible in the background, consistent with Sea-Tac's geographic orientation.
    TagsPuget Sound, Runways, Sea-Tac AirportFolderRunways
  • Stcp chapter 423 pg 4 relationship of hotel rooms to air passengers
    1975-04-22

    Sea-Tac Airport STCP Section 4.2.3: Air Passengers vs. Hotel Rooms Forecast, 1960–1993

    A dual-axis chart from a Sea-Tac Airport planning document (revised April 22, 1975, section 4.2.3) plotting historical and forecast air passenger volumes against hotel room counts from 1960 to 1993. The chart projects growth from 5,205,157 passengers and 1,749 hotel rooms in 1973 to 15,100,000 passengers and 4,159 rooms by 1993, using hotel room growth as an indicator of airport-related activity expansion.
    TagsForecast, Sea-Tac Airport, Statistics, STCPFoldermaps
  • Stcp chapter unk pg 12 sea tac communities plan airport acquisition
    1975-04-22

    Sea-Tac Communities Plan Airport Acquisition Map (Plate 6.6.2), April 1975

    Map plate 6.6.2 from the Sea-Tac Communities Plan, revised April 22, 1975, showing the existing Seattle-Tacoma International Airport boundary (solid line) and the proposed acquisition area (dotted line). The document is sponsored by the Port of Seattle and King County and is labeled 'airport acquisition,' page 12.
    TagsAirport Expansion, King County, Map, Sea-Tac Airport, Sea-Tac Communities PlanFoldermaps
  • 1975-04-22

    Location of tenants: Sea-Tac International Airport

    This 1975 document shows the location of airline tenants at Sea-Tac International Airport, mapping gate assignments across the airport's concourses and satellite terminals. Airlines listed include Alaska, Braniff, Continental, Eastern, Hughes Airwest, Northwest, Pan Am, Pacific West, SAS, United Air Lines, and Western. The map identifies each carrier's specific gate numbers within Concourses B and C, the North and South Satellites, and other terminal areas.
    TagsAlaska Air, History, Map, Sea-Tac AirportFolderHistory
  • Stcp chapter 662 pg 17 conversion and reinforcement
    1975-04-22

    Sea-Tac Communities Plan Map 6.6.2 — Conversion and Reinforcement Areas (April 1975)

    This is map sheet 6.6.2 (POS 21121, revised April 22, 1975) from the Sea-Tac Communities Plan, sponsored by the Port of Seattle and King County. It shows the area around Seattle-Tacoma International Airport with land-use designations including current airport lands, acquisition zones, conversion areas, reinforcement areas, and the proposed S.R. 509 corridor, overlaid on a street grid map extending from Puget Sound eastward.
    TagsLand Use, Map, Sea-Tac Airport, Sea-Tac Communities Plan, STCPFoldermaps
  • 1975-04-22

    Development concept: the airport and the communities

    This document outlines a development concept addressing the relationship between Sea-Tac International Airport and its surrounding communities. While the airport contributes significantly to the regional economy—supporting over 15,200 jobs and $390 million in annual business activity—local residents have long struggled with aircraft noise, uncertainty about airport expansion, and the impact on property values and neighborhood character. The concept seeks to find greater compatibility between the airport's growth and the needs of the communities it affects.
    TagsEconomic Impacts, Noise, Sea-Tac Airport, Sea-Tac Communities Plan, STCPFolderfinal plan
  • 1974-07-31

    Sea-Tac Motel Aerial

    Black-and-white aerial photograph showing a large multi-building hotel or motel complex with extensive parking lots alongside a divided highway. A body of water is visible in the upper portion of the image; a Shell gas station sign is faintly legible on the left side of the road.
    TagsHistory, Runways, Sea-Tac AirportFolderRunways

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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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