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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.

TagPuget Sound(125)

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  • 2001-06-22

    Aerial View of Multi-Lane Freeway Through Forested Suburban Landscape Near Puget Sound

    Aerial photograph showing a wide multi-lane freeway curving through a heavily forested suburban landscape, with residential developments and commercial properties visible alongside the roadway. A large body of water is faintly visible in the background, consistent with the Puget Sound region near Sea-Tac Airport.
    Tagsaircraft, Puget Sound, Sea-Tac AirportFolderWatershed Aerial Photos
  • 2001-06-22

    Aerial View of Sea-Tac Airport Runways and Interstate 5 with Puget Sound on the Horizon

    Aerial photograph looking northwest showing Sea-Tac Airport runways and taxiways in the upper left, with Interstate 5 curving through the foreground. A large orange transmission tower or antenna structure is visible in the lower center, and Puget Sound is visible on the horizon to the upper right.
    TagsPuget Sound, Runways, Sea-Tac AirportFolderWatershed Aerial Photos
  • 2001-06-22

    Aerial View of Highway Overpass Construction Near Puget Sound in the Greater Seattle-Tacoma Area

    Aerial photograph showing a multi-lane highway (likely I-5 or similar Pacific Northwest interstate) intersecting with a surface road, with active bridge or overpass construction visible at the crossing. A body of water consistent with Puget Sound is visible in the background, along with suburban residential development and dense tree cover, suggesting a location in the greater Seattle-Tacoma area.
    Tagsaircraft, Construction, Map, Puget Sound, SR509FolderWatershed Aerial Photos
  • 2001-06-22

    Aerial View of Interstate Highway Through Pacific Northwest Suburban Landscape Near Sea-Tac Corridor

    An aerial photograph showing a wide multi-lane highway (likely an Interstate) cutting through a densely forested suburban landscape with residential and commercial development visible on either side. The overcast sky, evergreen tree cover, and architectural style are consistent with the Pacific Northwest region, potentially near the Sea-Tac corridor in Washington State.
    TagsPuget Sound, Sea-Tac AirportFolderWatershed Aerial Photos
  • 2001-05-24

    Destination 2030: Regional context

    The central Puget Sound region, located between the Cascade and Olympic mountain ranges and bisected by Puget Sound, faces significant transportation and infrastructure challenges driven by rapid population growth. The region's population grew from 1.5 million in 1960 to 3.2 million by 2000, with projections estimating 4.7 million residents and 2.6 million jobs by 2030. Economic expansion, particularly in aerospace and high-technology sectors, has been a primary driver of this growth, placing increasing demands on the region's transportation systems and natural resources.
    TagsPSRC, Puget Sound, Puget Sound Regional Council, Regional Transportation Plan, transportationFolderDestination 2030 CD
  • 2001-04-30

    EXH AR023204: Memo — Black River Quarry Aggregate Testing (TPH & Metals)

    A Port of Seattle memo from April 2001 summarizes environmental testing of rock aggregate imported from the Black River Quarry for use in the Third Runway embankment project. Testing by environmental consultant AMEC found petroleum hydrocarbons (TPH) and elevated copper levels in some samples, prompting operational changes at the quarry including equipment cleaning and discarding the first hundred tons of rock after asphalt recycling operations. Follow-up testing confirmed that contaminant levels fell below MTCA Method A cleanup standards, and the Port halted material imports from the quarry in mid-October 2000 pending resolution.
    TagsACC, Ecology, MTCA, Pollution Control Hearings Board, Port Of Seattle, Puget Sound, Third RunwayFolderBox 10
  • 2001-01-25

    EXH AR049834: Hart Crowser Memorandum — Additional Information on the Seismic Design for Sea-Tac International Airport Third Runway

    Memorandum dated January 25, 2001 from Douglas Lindquist (EIT) and Michael Bailey (P.E.) of Hart Crowser, Inc. to the Embankment Technical Review Board (Attn: Pete Douglass), project J-4978-30, CC to Jim Thomson (P.E., HNTB). Provides additional information on seismic analyses for the Third Runway at Seattle-Tacoma International Airport (STIA) in SeaTac, Washington. Covers probabilistic seismic
    TagsACC, Earthquake, Pollution Control Hearings Board, Puget Sound, Sea-Tac Airport, Third RunwayFolderBox 21
  • 2000-12-14

    Puget Sound Water Quality Management Plan 2000

    The 2000 Puget Sound Water Quality Management Plan, adopted December 14, 2000, outlines coordinated local, state, tribal, and federal actions to restore and protect the health of Puget Sound in Washington State. The plan introduces new programs addressing aquatic nuisance species and Georgia Basin water coordination, while substantially revising existing stormwater, habitat, and wetlands protection programs. It builds on earlier management plans dating back to 1987 and calls for renewed commitment to funding and policy improvements.
    TagsEcology, Environment, Puget Sound, Stormwater, Water QualityFolderEnvironment
  • 2000-01-24

    EXH AR032610: Desk Manual for Ecology’s Federal Permit Team 401/CZM Review

    Desk Manual for Washington State Department of Ecology’s Federal Permit Team covering Section 401 Water Quality Certifications and Coastal Zone Management Act (CZM) consistency determinations. Covers SEPA compliance, JARPA application procedures, public notice and hearings, permit review timelines, waivers, 303(d)-listed waters, wetlands mitigation, sediment management standards, Puget Sound Dredged Disposal Analysis (PSDDA), NPDES coordination, antidegradation,
    TagsACC, Clean Water Act, Ecology, Pollution Control Hearings Board, Puget Sound, SEPA, Water QualityFolderBox 13
  • 2000-01-24

    Exhibit 207: Desk Manual for Ecology’s Federal Permit Team — 401/CZM Review

    This is a procedural desk manual for Washington State Department of Ecology's Federal Permit Team, outlining how staff should review and process Section 401 Water Quality Certifications and Coastal Zone Management (CZM) consistency determinations for federally permitted projects. It covers application procedures, public notice requirements, review timelines, and technical guidance for evaluating impacts to water quality, wetlands, and sediments. This document does not contain content related to Sea-Tac Airport noise policy.
    TagsACC, Clean Water Act, Ecology, Pollution Control Hearings Board, Puget Sound, SEPA, Water QualityFolderBox 08

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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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