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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 Regional Council(191)

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  • Acc flight plan brochure pdf
    2026-09-18

    Flight Plan: Real Solutions to Meet Air Transportation Needs

    Airport Communities Coalition (ACC) advocacy brochure opposing the Port of Seattle’s proposed third runway at Sea-Tac Airport. Argues that a third runway won’t stop flight delays caused by bad weather, is too physically constrained at Sea-Tac (citing Sea-Tac as one of the 100 largest U.S. airports operating on the smallest land area), and would be
    TagsACC, Airport Communities Coalition, Puget Sound Regional Council, Sea-Tac Airport, Third RunwayFolderFlight Plan Campaign
  • 2026-09-18

    Flight Plan: Real Solutions to Meet Air Transportation Needs

    Airport Communities Coalition (ACC) advocacy brochure opposing the Port of Seattle’s proposed third runway at Sea-Tac Airport. Argues that a third runway won’t stop flight delays caused by bad weather, is too physically constrained at Sea-Tac (citing Sea-Tac as one of the 100 largest U.S. airports operating on the smallest land area), and would be
    TagsACC, Airport Communities Coalition, Puget Sound Regional Council, Sea-Tac Airport, Third RunwayFolderFlight Plan Campaign
  • 2026-08-28

    Chapter 8 Parks, Recreation, and Open Space Element

    Chapter 8 of SeaTac's Envision 2044 Comprehensive Plan outlines the city's goals for parks, recreation, and open space through the year 2044, including ensuring all residents have a neighborhood park within walking distance and creating new village squares in urban and residential areas. The element is guided by Washington State Growth Management Act requirements and aligns with regional and King County planning policies that prioritize parks access for historically underserved communities. Note that this document addresses city land use and recreation planning, not airport noise policy.
    TagsCity Of SeaTac, Comprehensive Plan, Parks, Puget Sound Regional CouncilFolderComprehensive Plan
  • 8 pros pdf
    2026-08-28

    Parks, Recreation, and Open Space Element

    Chapter 8 of SeaTac's Envision 2044 Comprehensive Plan outlines the city's goals for parks, recreation, and open space through the year 2044, including ensuring all residents have a neighborhood park within walking distance and creating new village squares in urban and residential areas. The element is guided by Washington State Growth Management Act requirements and aligns with regional and King County planning policies that prioritize parks access for historically underserved communities. Note that this document addresses city land use and recreation planning, not airport noise policy.
    TagsCity Of SeaTac, Comprehensive Plan, Parks, Puget Sound Regional CouncilFolderComprehensive Plan
  • 2026-08-28

    Chapter 3 Urban Center Background Report

    This document is Chapter 3 of the City of SeaTac's Envision SeaTac 2044 Comprehensive Plan, providing background on the city's designated Urban Growth Center. It outlines regional planning requirements from the Puget Sound Regional Council (PSRC) and King County, including growth targets, housing, transportation, and equity considerations for the urban center surrounding the SeaTac/Airport area. The chapter also describes three subareas — City Center, South 154th Street Station Area, and Angle Lake Station Area — and their projected growth capacity through 2044.
    TagsCity Of SeaTac, Comprehensive Plan, King County, PSRC, Puget Sound Regional CouncilFolderComprehensive Plan
  • 3x urban center br pdf
    2026-08-28

    Chapter 3 Urban Center Background Report

    This document is Chapter 3 of the City of SeaTac's Envision SeaTac 2044 Comprehensive Plan, providing background on the city's designated Urban Growth Center. It outlines regional planning requirements from the Puget Sound Regional Council (PSRC) and King County, including growth targets, housing, transportation, and equity considerations for the urban center surrounding the SeaTac/Airport area. The chapter also describes three subareas — City Center, South 154th Street Station Area, and Angle Lake Station Area — and their projected growth capacity through 2044.
    TagsCity Of SeaTac, Comprehensive Plan, King County, PSRC, Puget Sound Regional CouncilFolderComprehensive Plan
  • 2026-08-28

    Chapter 1 Introduction, City Vision, and Planning Framework Background Report

    This document is Chapter 1 of the City of SeaTac's Comprehensive Plan (Envision SeaTac 2044), providing an introduction to the city's planning framework, urban growth area designations, and community profile. It outlines how the plan was developed in accordance with Washington State's Growth Management Act, the Puget Sound Regional Council's Vision 2050 strategy, and King County Countywide Planning Policies. Note that this chapter focuses on land use planning and demographic data rather than airport noise policy specifically.
    TagsCity Of SeaTac, Comprehensive Plan, King County Council, Puget Sound Regional Council, RCWFolderComprehensive Plan
  • 1x intro planning framework br pdf
    2026-08-28

    Introduction, City Vision, and Planning Framework Background Report

    This document is Chapter 1 of the City of SeaTac's Comprehensive Plan (Envision SeaTac 2044), providing an introduction to the city's planning framework, urban growth area designations, and community profile. It outlines how the plan was developed in accordance with Washington State's Growth Management Act, the Puget Sound Regional Council's Vision 2050 strategy, and King County Countywide Planning Policies. Note that this chapter focuses on land use planning and demographic data rather than airport noise policy specifically.
    TagsCity Of SeaTac, Comprehensive Plan, King County Council, Puget Sound Regional Council, RCWFolderComprehensive Plan
  • 2026-08-21

    PSRC Public Records Request Search Log: PRR20260730-Harris, Installment 2

    This is a Public Records Request Search Log from PSRC (Puget Sound Regional Council) documenting searches conducted in August 2026 for records related to Sea-Tac Airport noise policy, including documents about an Expert Arbitration Panel, RCAA, Port of Seattle compliance reports, and demand/system management. Searches were carried out by Casey Moreau and Hila Keller across locations including a library catalog, digital archives (J: drive), and a physical archives room, using tools such as Soutron. The log provides a structured record of search terms, locations, dates, and searcher names, with rows 5–22 left blank for additional entries.
    TagsExpert Arbitration Panel, PSRC, Public Records, Puget Sound Regional Council, RCAAFolderPRR-2026-07-30
  • Prr20260730 harris search log installment2 pdf
    2026-08-21

    PSRC Public Records Request Search Log: PRR20260730-Harris, Installment 2

    A Search Log form from the Puget Sound Regional Council (PSRC) documenting four completed public records searches conducted in August 2026 by Casey Moreau and Hila Keller. Search terms include 'Expert Arbitration Panel,' 'RCAA,' 'Port of Seattle Compliance Report,' and 'Demand/System Management,' with locations searched including the Library Catalog Knowledge Center, J: drive, and Archives room.
    TagsExpert Arbitration Panel, PSRC, Public Records, Puget Sound Regional Council, RCAAFolderPRR-2026-07-30

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Upcoming Events

  • Part 150 NCP Workshop — Burien
    Add to CalendarMSaturday Oct 17: 10:00am

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — SeaTac
    Add to CalendarMMonday Oct 19: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — Des Moines
    Add to CalendarMTuesday Oct 20: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]

[See all...]


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.
read more...

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.
continue...

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