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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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  • 2025-10-24

    Permitting Reform in Action: CEQ Updates Roadmap for Agency NEPA Compliance

    In September 2025, the Council on Environmental Quality (CEQ) issued updated non-binding guidance to federal agencies on how to conduct environmental reviews under the National Environmental Policy Act (NEPA), replacing earlier guidance from February 2025. The update streamlines the permitting process by incorporating a recent Supreme Court ruling limiting the scope of required environmental analysis, removing climate change and environmental justice considerations, and introducing an optional fee-based program that cuts review timelines in half. Agencies are encouraged to revise their own NEPA procedures using a provided template while continuing existing review processes without delay.
    TagsCEQ, Council on Environmental Quality, Environmental Impact Statement, NEPA, Permitting
  • 2025-10-24

    Permitting Reform in Action: CEQ Updates Roadmap for Agency NEPA Compliance

    Holland & Knight alert by Jennifer L. Hernandez, Rafe Petersen, Jason A. Hill, Alexandra E. Ward, Aaron Aber, and Maggie P. Pahl analyzing the Council on Environmental Quality (CEQ) September 29, 2025 updated nonbinding NEPA guidance memorandum (90 FR 47734) that supersedes the February 2025 guidance. Covers incorporation of Seven County Infrastructure Coalition v. Eagle
    CategoriesLegislation TagsCEQ, Council on Environmental Quality, Environmental Impact Statement, NEPA, Permitting
  • 2025-10-23

    Ep #12 The Westside Hilltop Survival Committee

    The Airport Communities Podcast Last week we talked about how the SAMP EA can say that the air quality is within standards. There was this (brief) ‘golden age’ of NEPA where you could get pollutants reviewed and problems fixed. It made dramatic improvements to the environment and public health. This week, we start providing some
    CategoriesNews Stories TagsNEPA, The Airport Communities Podcast!
  • 2025-10-16

    Ep #11 No Data? No Problem.

    The Airport Communities Podcast Last week we answered a series of questions from the previous week.  (We get many of the same questions every week.) We had intended to talk about the Port of Seattle’s recent SAMP Webinar, but host JC came across the book Particles of Truth at a recent UWDEOHS seminar on community
    CategoriesNews Stories TagsNEPA, The Airport Communities Podcast!
  • 2025-10-14

    Sustainable Airport Master Plan Near-Term Projects Update

    Port of Seattle presentation updating on the FAA’s completion of NEPA Environmental Assessment for 31 proposed SAMP projects, finding no significant environmental impact. Covers regional growth driving air travel demand, project details, and next steps including Port-led environmental review and public engagement.
    TagsFAA, NEPA, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master Plan
  • 2025-10-14

    Final EA Impact Classification Chart

    A slide titled 'In the FINAL EA, A Few Items Changed' presents a tiered matrix of environmental impact categories ranging from 'Significant impacts requiring mitigation' down to 'Not present.' Notable changes shown include 'Climate' being struck through and replaced with 'Greenhouse Gas Emissions,' and 'Environmental Justice' similarly struck through within the Socioeconomic category, indicating terminology revisions between draft and final Environmental Assessment versions.
    Tagsenvironmental assessment, Environmental Justice, NEPA, Port Of Seattle Commission
  • 2025-09-30

    HCM Signalized Intersection Capacity Analysis: SR 509 SB Ramps, NB SR 509 Ramps, and Des Moines Way S at S 128th St — 2032 No Action PM Peak

    This traffic engineering report analyzes three signalized intersections along S 128th Street near SR 509 in the Sea-Tac area under projected 2032 No Action conditions during the PM peak hour. The study finds that the SR 509 ramp intersections are operating well over capacity, with an Intersection Capacity Utilization of 104.6% and an ICU Level of Service G, while the Des Moines Way S intersection operates more acceptably at 63.3% ICU. Overall intersection control delays range from approximately 19 to 27 seconds, with most approaches functioning at Level of Service B or C.
    TagsDes Moines, Environmental Impact Statement, NEPA, SAMP, SR509, Sustainable Airport Master Plan, WSDOT
  • 2025-09-30

    HCM Signalized Intersection Capacity Analysis: SR 509 SB Ramps, NB SR 509 Ramps, and Des Moines Way S at S 128th St — 2032 No Action PM Peak

    This traffic engineering report analyzes three signalized intersections along S 128th Street near SR 509 in the Sea-Tac area under projected 2032 No Action conditions during the PM peak hour. The study finds that the SR 509 ramp intersections are operating well over capacity, with an Intersection Capacity Utilization of 104.6% and an ICU Level of Service G, while the Des Moines Way S intersection operates more acceptably at 63.3% ICU. Overall intersection control delays range from approximately 19 to 27 seconds, with most approaches functioning at Level of Service B or C.
    TagsDes Moines, Environmental Impact Statement, NEPA, SAMP, SR509, Sustainable Airport Master Plan, WSDOT
  • 2025-09-29

    Appendix I: Natural Resources & Energy Supply — Bonneville Power Administration Strategic Plan Progress Update 2018–2023

    The Bonneville Power Administration's 2018–2023 Strategic Plan Progress Update outlines the agency's efforts to improve its financial health, modernize its power grid assets, and better serve customers across the Pacific Northwest. The plan identifies five strategic goals, including strengthening financial performance, providing competitive power products, and valuing its workforce. This update, issued nearly three years after the original 2018 plan, documents accomplishments and highlights areas needing further attention.
    TagsEnergy, NEPA, SAMP, strategic plan, Sustainable Airport Master Plan
  • 2025-09-29

    Appendix I: Natural Resources & Energy Supply — Bonneville Power Administration Strategic Plan Progress Update 2018–2023

    The Bonneville Power Administration's 2018–2023 Strategic Plan Progress Update outlines the agency's efforts to improve its financial health, modernize its power grid assets, and better serve customers across the Pacific Northwest. The plan identifies five strategic goals, including strengthening financial performance, providing competitive power products, and valuing its workforce. This update, issued nearly three years after the original 2018 plan, documents accomplishments and highlights areas needing further attention.
    TagsEnergy, NEPA, SAMP, strategic plan, Sustainable Airport Master Plan

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  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
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    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

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  • Commercial Aviation Work Group
    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
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    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

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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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