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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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  • 2023-11-19

    Aircraft noise reduction

    Chapter 15.12 of the Burien Municipal Code establishes minimum building construction standards to reduce aircraft noise for properties near Seattle-Tacoma International Airport. Buildings are divided into three noise reduction zones (35 dB, 30 dB, and 25 dB), each requiring progressively higher sound transmission ratings for walls, windows, doors, roofs, and ventilation systems. The code applies to all new construction and most additions intended for human occupancy, with limited exceptions for small remodels and non-inhabited structures like warehouses and garages.
    TagsCity of Burien, Noise Mitigation, Sea-Tac Airport, Sound InsulationFolderBurien
  • 2023-11-07

    Port Of Seattle 2021 Land Cover Classifications Map — Sea-Tac Airport Aviation Properties

    Figure E-1 from a Port of Seattle document depicting 2021 land cover classifications for Port-owned aviation properties at Seattle-Tacoma International Airport (SEA) and an Auburn Property inset. Land cover categories include forest, grass, shrub, water, developed/impervious surfaces, and buildings, based on 2021 King County aerial imagery and USGS National Land Cover Database 2019.
    TagsKing County, Land, Map, Port Of Seattle, Sea-Tac AirportFolderLand Stewardship Plan
  • 2023-11-01

    Draft final land stewardship plan

    The Port of Seattle's Draft Final Land Stewardship Plan (November 2023) outlines a framework for managing and improving the natural lands surrounding Seattle-Tacoma International Airport (SEA), including ecological assessments, tree canopy policies, and habitat stewardship recommendations. The plan identifies management units across Port-owned properties, evaluates their ecological conditions, and prioritizes conservation and restoration actions. It also considers equity and community access, aiming to balance airport operational needs with environmental sustainability goals.
    TagsAnchor QEA, Environment, Land, Port Of Seattle, Sea-Tac AirportFolderLand Stewardship Plan
  • 2023-11-01

    Final Land Stewardship Plan

    The Port of Seattle's Final Land Stewardship Plan (November 2023) outlines a framework for managing and improving the natural lands surrounding Seattle-Tacoma International Airport (SEA), covering ecological inventory, land use assessment, and stewardship recommendations across defined management units. The plan establishes priorities for habitat preservation, tree canopy protection, and community equity considerations in relation to airport operations. It was developed collaboratively by Port of Seattle staff across aviation, seaport, and real estate divisions, along with environmental consulting firm Anchor QEA, LLC.
    TagsAnchor QEA, Environment, Land, Port Of Seattle, Sea-Tac AirportFolderLand Stewardship Plan
  • Port outlines priorities for Sea-Tac Airport in proposed spending plan

    By Marissa Nall – Reporter, Puget Sound Business Journal Oct 31, 2023 The Port of Seattle plans to commit another $1.1 billion to its massive, rolling capital projects agenda at Seattle-Tacoma International Airport under its newly proposed budget for next year. Introduced late last week, the budget sets the stage for $5.3 billion in capital
    CategoriesFrom The Web TagsPort Of Seattle, Puget Sound Business Journal, SAMP, Sea-Tac Airport
  • Airbus A320-Family Aircraft on Approach, Photographed From Below

    A twin-engine narrow-body commercial aircraft, consistent with an Airbus A320-family type, photographed from directly below against an overcast sky. Landing gear is extended, suggesting the aircraft is on approach; winglets and engine nacelles are visible in silhouette with no airline livery discernible.
    TagsAirbus, aircraft, Sea-Tac AirportFolderAviation
  • 2023-10-10

    Sea-Tac Airport Passenger Volume Data and Forecast 2019–2025

    A slide from a Sea-Tac Airport presentation showing passenger volume data from 2019 to 2025 (in millions), including actual figures and forecasts. The chart shows a COVID-19-related drop to 20.0 million passengers in 2020 (-61.3% vs. 2019) with projected recovery to 54.3 million by 2025, exceeding pre-pandemic 2019 levels of 51.8 million by 4.9%.
    CategoriesMeetings TagsCOVID-19, Forecast, Sea-Tac AirportFolderFinance
  • 2023-10-10

    Sea-Tac Airport Operating Revenue Recovery: 2019–2024 Budget Presentation Slide

    A presentation slide titled 'Strong Operating Revenue Recovery' showing Sea-Tac Airport operating revenues in $ millions from 2019 actuals through 2024 budget, broken down by Aero and Non-Aero categories. The 2024 budget projects total revenues of $861 million, 7.5% above the 2023 budget and 37% above 2019 actuals, with Non-Aero revenue growing 12.5% compared to the 2023 budget.
    CategoriesMeetings TagsBudget, Sea-Tac AirportFolderFinance
  • 2023-10-10

    Sea-Tac Airport Capital Program Growth Forecast 2019–2028 Presentation Slide

    A presentation slide titled 'Preparing for Major Growth of Capital Program' shows a bar chart of capital spending in millions of dollars from 2019 through 2028, with 2025 projected as the highest annual spending year at approximately $1.26 billion. Key notes indicate the 2024 operating budget will add resources to deliver the growing capital program, and the forecast excludes Sustainable Airport Master Plan (SAMP) near-term projects.
    CategoriesMeetings TagsBudget, Port Of Seattle, SAMP, Sea-Tac AirportFolderFinance
  • 2023-10-10

    Sea-Tac Airport Financial Budget Summary 2020–2024 Proposed

    A financial budget summary table presenting operating revenues, operating expenses, net operating income, and capital expenditures from 2020 actuals through a 2024 proposed budget. Key indicators include debt service coverage, ADF cash balance, cost per enplanement (CPE), non-aeronautical NOI, and enplaned passengers, with the 2024 proposed budget showing total operating revenues of $860,940 thousand and capital expenditures of $717,598 thousand.
    CategoriesMeetings TagsBudget, Port Of Seattle, Sea-Tac AirportFolderFinance

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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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