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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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  • 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
  • 2026-08-22

    Jerry Dinndorf Airport Files Box 4: Expert Arbitration Panel on Demand/System Management and Noise at Sea-Tac — Verbatim Record of Proceedings, May 3–5, 1995 (1992–1996)

    This archival record (Box No. 01421) contains Jerry Dinndorf's airport files covering the years 1992–1996, including verbatim proceedings from an expert arbitration panel on demand, system management, and noise at Seattle-Tacoma International Airport (May 3–5, 1995), along with original documents and returned envelopes related to the mailing of an addendum notice. The record was prepared by Doris Dungan on 21 July 2005 and is held in offsite storage under the Airport Information Resources (AIR) department. It was scheduled for review in 2011 and remains on long-term loan.
    TagsExpert Arbitration Panel, Noise, PSRC, Sea-Tac Airport, TranscriptFolderPRR-2026-07-30
  • 194242352 staff files verbatim transcript pdf
    2026-08-22

    Jerry Dinndorf Airport Files Box 4: Expert Arbitration Panel on Demand/System Management and Noise at Sea-Tac — Verbatim Record of Proceedings, May 3–5, 1995 (1992–1996)

    This Archives and Storage record (Box No. 01421, Department Code AIR, CID 11128) was prepared by Doris Dungan on 21 July 2005 and covers Jerry Dinndorf airport files box 4, including a verbatim record of proceedings from an Expert arbitration panel on demand/system management and noise at Sea-Tac (May 3–5, 1995) and returned envelopes related to notice of addendum issuance and availability, spanning 1992–1996. The record copy is held at Offsite Storage under a Long Term Loan status.
    TagsExpert Arbitration Panel, Noise, PSRC, Sea-Tac Airport, TranscriptFolderPRR-2026-07-30
  • 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
  • Cawg agenda jul 08 26 pdf
    2026-07-08

    Commercial Aviation Work Group

    Commercial Aviation Work Group Meeting 10:00 a.m. – 10:10 a.m. | Welcome a. Introductions and Agenda Review b. Governance update; status of appointments and non-voting member invitations c. Other updates as necessary Presenter: Evan Nordby, Chair 10:10 a.m. – 10:20 a.m. | Review Work Group Role and Re-Cap April Meeting Presenter: Consultant Team 10:20 a.m.
    CategoriesEvents TagsCapacity, Commercial Aviation Work Group, PSRC, Puget Sound Regional Council, WSDOT
  • 2026-07-08

    Commercial Aviation Work Group meeting agenda – July 8, 2026

    Meeting agenda for the Commercial Aviation Work Group (CAWG) hybrid meeting held at Centralia College’s TransAlta Commons. The agenda covers discussions on the capacity gap including PSRC and state reports, YVR and PDX impacts, and planned capacity enhancements. Additional topics include annual report considerations, next work plan, and a post-meeting tour of CLS airport for
    TagsCACC, Capacity, Commercial Aviation Work Group, PSRC, Puget Sound Regional Council, WSDOTFolderCACC
  • 2025-09-01

    PSRC Fiscal years 2026-2027 biennial budget and work plan: July 2025 – June 2027

    This document is the Puget Sound Regional Council's Fiscal Years 2026–2027 Biennial Budget and Work Plan, covering July 2025 through June 2027, which outlines the agency's revenues, expenditures, staffing, and regional planning priorities for the greater Seattle–Tacoma area. It includes demographic data on population, housing, and employment growth across member jurisdictions, along with financial tables and an integrated planning timeline. Note that this budget document does not address Sea-Tac Airport noise policy; researchers seeking noise-related planning materials should consult dedicated airport or environmental planning resources.
    TagsBudget, PSRC, Puget Sound, Puget Sound Regional Council, work planFolderPuget Sound Regional Council
  • 2025-01-16

    Sustainable Airport Master Plan: Near-Term Projects Environmental Review — Release of the FAA NEPA Draft Environmental Assessment and Public Comment Period

    Jan 16 2025 presentation to PSRC by Dave Kaplan, Clare Gallagher. Port of Seattle presentation covering the Sustainable Airport Master Plan (SAMP) Near-Term Projects (NTPs) Environmental Review, released October–November 2024. Covers the FAA NEPA Draft Environmental Assessment (Draft EA) and public comment period for Sea-Tac Airport (SEA). Includes historical passenger growth data from 1949 (130,600
    TagsNEPA, Port Of Seattle, PSRC, SAMP, Sea-Tac AirportFolderPuget Sound Regional Council

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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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