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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.

TagEnvironment(185)

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  • 2020-12-01

    2018 Community greenhouse gas emissions inventory

    ★ 34
    Seattle's 2018 Community Greenhouse Gas Emissions Inventory, prepared by the Seattle Office of Sustainability & Environment, tracks and analyzes the city's greenhouse gas emissions across sectors including transportation, buildings, industry, and waste. The report compares 2018 emissions data against previous years, examines per capita trends, and outlines Seattle's climate reduction goals and strategies. Note: This document focuses on citywide carbon emissions and climate policy, and does not address Sea-Tac Airport noise issues.
    CategoriesKey Documents TagsCity of Seattle, Environment, Greenhouse gasesFolderStudies
  • 2020-01-01

    Air filters, pollution and student achievement

    ★
    A study by NYU economist Michael Gilraine found that installing air filters in classrooms led to a 0.20 standard deviation improvement in math and English test scores, using a natural experiment from the 2015-2016 Aliso Canyon gas leak in Los Angeles. The gas company installed air filters in all schools within five miles of the leak, allowing researchers to compare student achievement between schools that received filters and those that did not. The findings suggest that air filtration is a cost-effective way to boost student achievement by reducing exposure to common indoor air pollutants.
    CategoriesKey Documents Tagseducation, Environment, Health, HEPA Filters, pollutionFolderHealth
  • 2017-12-01

    King County Greenhouse Gas Emissions Inventory: A 2015 Update

    ★ 32
    This December 2017 report inventories greenhouse gas emissions across King County, Washington, providing a comprehensive 2015 update that examines emissions by sector using geographic-based and consumption-based methodologies. It was prepared by Cascadia Consulting Group and Hammerschlag & Co. LLC, covering sources such as transportation, buildings, waste, and energy use. The report tracks changes in emissions over time and analyzes key data sources to help inform county-level climate and environmental policy decisions.
    CategoriesKey Documents TagsClimate, Environment, Greenhouse gases, King County, State of WashingtonFolderPublic Health
  • 2026-08-28

    Chapter 9 Environment Element

    Chapter 9 of SeaTac's Envision SeaTac 2044 Comprehensive Plan outlines the city's environmental goals and policies covering water quality, air quality, greenhouse gas reduction, wetlands, wildlife habitat, and shoreline management. The element also addresses environmentally sensitive areas such as steep slopes, floodplains, and groundwater aquifers, and includes recommended implementation strategies. Note that while this chapter covers broad environmental planning for the City of SeaTac, it does not specifically address Sea-Tac Airport noise policy.
    TagsCity Of SeaTac, Comprehensive Plan, Environment, Land Use, Water QualityFolderComprehensive Plan
  • 9 environment pdf
    2026-08-28

    Chapter 9 Environment Element

    Chapter 9 of SeaTac's Envision SeaTac 2044 Comprehensive Plan outlines the city's environmental goals and policies covering water quality, air quality, greenhouse gas reduction, wetlands, wildlife habitat, and shoreline management. The element also addresses environmentally sensitive areas such as steep slopes, floodplains, and groundwater aquifers, and includes recommended implementation strategies. Note that while this chapter covers broad environmental planning for the City of SeaTac, it does not specifically address Sea-Tac Airport noise policy.
    TagsCity Of SeaTac, Comprehensive Plan, Environment, Land Use, Water QualityFolderComprehensive Plan
  • 2026-08-28

    Chapter 9 Environment Background Report

    This document is Chapter 9 of the City of SeaTac's Envision SeaTac 2044 Comprehensive Plan, focusing on the Environment Background Report. It outlines key reference materials used to support environmental goals and policies, including wetland surveys, flood insurance maps, and soil conservation data from agencies such as King County, the U.S. Department of the Interior, and FEMA. The report also notes that SeaTac incorporates environmental information from adjacent jurisdictions and other agencies into its local regulations as appropriate.
    TagsCity Of SeaTac, Comprehensive Plan, Environment, King County, Port Of SeattleFolderComprehensive Plan
  • 9x environment br pdf
    2026-08-28

    Chapter 9 Environment Background Report

    This document is Chapter 9 of the City of SeaTac's Envision SeaTac 2044 Comprehensive Plan, focusing on the Environment Background Report. It outlines key reference materials used to support environmental goals and policies, including wetland surveys, flood insurance maps, and soil conservation data from agencies such as King County, the U.S. Department of the Interior, and FEMA. The report also notes that SeaTac incorporates environmental information from adjacent jurisdictions and other agencies into its local regulations as appropriate.
    TagsCity Of SeaTac, Comprehensive Plan, Environment, King County, Port Of SeattleFolderComprehensive Plan
  • Pxl july 30, 2026 203421669

    Auburn Wetland Boardwalk Trail — July 30, 2026, 20:34:21

    TagsAuburn Wetland, City of Auburn, Environment, Port Of SeattleFolderAuburn Wetland
  • Pxl july 30, 2026 203404537

    Auburn Wetland Boardwalk Trail — July 30, 2026, 20:34:04

    TagsAuburn Wetland, City of Auburn, Environment, Port Of SeattleFolderAuburn Wetland
  • Pxl july 30, 2026 203354748

    Auburn Wetland Boardwalk Trail — July 30, 2026, 20:33:54

    TagsAuburn Wetland, City of Auburn, Environment, Port Of SeattleFolderAuburn Wetland

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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...]


Help study childhood asthma. Get free HEPA filter!

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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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    "Exhibit 2098: Ecology Memorandum — Report of Discussion on Slice Model Integration Relating to Sea-Tac Airport Master Plan Update Low Streamflow Analysis" — , 2001

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