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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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  • Sea-Tac Airport Satellite View Showing Parallel Runways and Terminal Complex

    Google Earth satellite image of Seattle-Tacoma International Airport (Sea-Tac), showing its parallel runway configuration, terminal complex on the east side, and surrounding suburban neighborhoods in King County, Washington. The image is credited to Google Earth and the U.S. Geological Survey, with a scale bar indicating approximately 1 mile.
    TagsKing County, Runways, Sea-Tac AirportFolderRunways
  • 2022-09-01

    King County Communitywide Consumption-Based GHG Emissions Inventory: Puget Sound Regional Emissions Analysis

    This 2022 report by EcoDataLab and Stockholm Environment Institute provides a consumption-based greenhouse gas emissions inventory for King County and the broader Puget Sound region, tracking emissions tied to residents' purchases and behaviors across categories such as transportation, food, housing, goods, and services. It analyzes historical emissions trends, neighborhood-level variations, and supply chain stages, then outlines potential strategies for reducing those emissions through policy changes and shifts in household consumption patterns.
    TagsClimate, Environment, Greenhouse gases, King County, Puget SoundFolderPublic Health
  • 2022-08-28

    Highline Communities Plan: Errata and Adopted HCP Modifications

    This document contains official corrections and modifications to the Highline Communities Plan, a land-use planning document for communities near Sea-Tac Airport in King County, Washington. It addresses errata such as street name corrections, zoning designation changes, and map updates, as well as adopted modifications related to hazard area development, Planned Unit Developments (PUDs), and a notable recognition of Boeing's proposed corporate headquarters on Port of Seattle property west of Sea-Tac Airport. The modifications also acknowledge that an environmental impact statement was being prepared by King County regarding the Boeing proposal, while community input had not yet been formally gathered.
    TagsBoeing HQ, HCP, Highline Communities Plan, King County, Sea-Tac AirportFolderHighline Community Plan
  • 2022-08-28

    Exploratory draft: Post project coordination study

    This exploratory draft outlines a proposed Post Project Coordination Study aimed at ensuring the continued implementation of programs developed under the Sea-Tac Communities Plan. It identifies key areas requiring coordination, including aircraft noise reduction, drainage improvements, community action programs, and land use controls, with principal agencies such as the Port of Seattle and King County playing central roles. The document also highlights the need for legislative advocacy at both the state and federal levels, as well as potential follow-up studies to fully carry out the plan's recommendations.
    Tagscommunity development, King County, Noise Mitigation, Port Of Seattle, Sea-Tac Communities PlanFoldermisc
  • 2022-08-27

    Greater Highline Community Parks Board: Purpose, Plan for Park Development, and History of North Sea-Tac Park

    The Greater Highline Community Parks Board was organized in early 1981 to represent the local community in developing the North Sea-Tac Park, a project arising from the Port of Seattle's acquisition of land severely impacted by airplane noise from Sea-Tac Airport. The development plan included steps such as securing a master lease with the Port of Seattle, organizing sports and recreation programs, cleaning up and improving the site, and potentially taking over Sunset School for community use. Key milestones between 1980 and 1981 included a $30,000 master plan study, approvals from both the Port of Seattle Commission and King County, and a bid by the Parks Board on all Sunset School buildings contingent on obtaining the master lease.
    TagsGreater Highline Community Parks Board, History, King County, North Sea-Tac Park, Port Of SeattleFolderGHCPB
  • 2022-08-27

    Boeing HQ Proposed Site: Project Site Plan and Building Entry Level Plan (Figs. 3–5)

    228-78-R
    Tags224-78-R, Boeing, Boeing HQ, EIS, Environmental Impact Statement, King County, Land Use, MapFolderBoeing
  • 2022-08-27

    Sea-Tac Communities Plan Fact Sheet No. 6: Study Area Overview

    This 1973 fact sheet from the Sea-Tac Communities Plan describes a 44.2-square-mile study area surrounding Seattle-Tacoma International Airport, covering communities including Burien, White Center, Normandy Park, and Des Moines, with a 1970 population of 137,000. The document inventories local schools, parks, utilities, and services in the region, and provides socioeconomic data showing a predominantly white, middle-income population with a median household income of $11,238. The plan was jointly sponsored by King County and the Port of Seattle with the goal of maximizing compatibility between the airport and its surrounding communities.
    CategoriesHistory TagsEDC, FactSheet, King County, Port Of Seattle, Sea-Tac Communities Plan, STCPFolderfactsheet
  • 2022-08-27

    Draft report of the Land Use Committee: Sea-Tac Communities Plan

    This draft report from the King County Policy Development Commission's Land Use Committee outlines the planning process for the Sea-Tac Communities Plan, a joint effort between King County and the Port of Seattle funded by a $640,000 FAA grant awarded in 1972. The plan aimed to concurrently develop a master plan for Sea-Tac International Airport and a companion land-use plan for surrounding communities most affected by airport noise and operations. A Policy Advisory Committee representing government agencies, consultants, and community groups oversaw the process, which moved through four phases covering data collection, site analysis, alternative plan development, and final recommendations for adoption by both the King County Council and the Seattle Port Commission.
    Tagscommunity engagement, FAA, King County, Port Of Seattle, Sea-Tac Communities PlanFoldermisc
  • 2022-08-27

    King County Zoning File Status for NIP

    This document lists 27 zoning petition files submitted to a planning authority, detailing the zone classification requested and whether each petition was approved or denied. Requests span a variety of zone types including residential (RD 3,600, RM 900), light manufacturing (M-L), industrial (M-1), commercial (C-G), and others, with the majority of petitions ultimately denied. A note at the bottom indicates that none of the cases were pending at the time of the record.
    TagsHighline Community Plan, King County, Land Use, Noise MitigationFolderProposed Boeing HQ 1978
  • 2022-08-24

    Sea-Tac Communities Plan: Map Supplement to Sixth Month Report

    The Sea-Tac/Communities Plan is a planning study co-sponsored by the Port of Seattle and King County, funded through a federal grant under the Airport and Airways Development Act of 1970. It serves as a map supplement to a sixth-month report, covering community trends and characteristics, land use, ground transportation and traffic, aesthetic and visual qualities, and natural determinants in the communities surrounding Seattle-Tacoma International Airport. The 1973 report includes demographic data such as median age, the percentage of residents under 20, and the percentage of residents 65 and older, mapped across 1970 census tracts in the Sea-Tac area.
    TagsKing County, Map, Port Of Seattle, Sea-Tac Communities Plan, STCPFolderMap Supplement to Six Month Report

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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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