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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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  • Pxl july 30, 2026 202901895
    2026-07-30

    Hydroworks and Habitat Interpretive Sign — Green/Duwamish River Watershed

    An outdoor interpretive sign titled 'Hydroworks and Habitat: Keeping It Clean' with a section labeled 'Water's Coming & Going,' featuring a map of the Green/Duwamish River Watershed. The weathered sign is located along a trail near a wetland or riparian area associated with the Green/Duwamish River system.
    TagsAuburn Wetland, City of Auburn, Duwamish River, Environment, Port Of Seattle, Water Quality
  • Pxl july 30, 2026 202916774
    2026-07-30

    Auburn Wetland Boardwalk Trail — July 30, 2026, 20:29:16

    TagsAuburn Wetland, City of Auburn, Environment, Port Of Seattle
  • Pxl july 30, 2026 203004847
    2026-07-30

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

    TagsAuburn Wetland, City of Auburn, Environment, Port Of Seattle
  • Event image
    2026-06-20

    2026 SoilSHOP Series – Des Moines

    By King Conservation District Midway CovenantDes Moines, WA Saturday, June 20 • 10 AM – 2 PM Overview Join us for free lead and arsenic soil testing at our SoilSHOP event at Midway Covenant in Des Moines! Puget Sound has a rich history of land and industry – but industrial practices from long ago may
    CategoriesEvents TagsArsenic, Des Moines, Environment, Health, King Conservation District
  • EPA forever chemicals 40165
    2026-05-18

    EPA to roll back PFAS limits for drinking water

    The Trump administration on Monday proposed rolling back limits on “forever chemicals” that contaminate millions of Americans’ drinking water and have been linked to a range of health problems. The proposal would partially rescind the first national drinking water limits for the chemicals — also known as per- and polyfluoroalkyl substances, or PFAS — set
    CategoriesFrom The Web, News Stories TagsEnvironment, Health, PFAS, Politico
  • Ecylogo news card 630
    2026-05-12

    State penalizes four organizations over $19,000 for fuel tank back fees at King County International Airport

      Department of Ecology News Release – May 13, 2026 SEATTLE  – After failing to pay a decade’s worth of back fees related to their underground storage tanks supplying King County International Airport – Boeing Field, Signature Aviation, Shultz, Inc., Sky Services, and King County have been penalized $19,681 by the Washington Department of Ecology. The
    CategoriesFrom The Web TagsAviation Fuel, Environment, KCIA, King County, pollution
  • 634447191 26140442278976531 5191433782839792025 n
    2026-05-08

    It All Adds Up Sea Change – Deploying Underwater Tech To Study How Noise Affects Marine Life

    A Port of Seattle promotional image featuring a dolphin or orca dorsal fin breaking the surface of calm water, with mountains visible in the background. The image promotes the Port's deployment of underwater technology to study how noise affects marine life, under their 'It All Adds Up Sea Change' environmental initiative.
    TagsEnvironment, Marine, Noise, Port Of Seattle
  • Holland Knight Logo
    2026-04-16

    New York’s Expanding Environmental Regulatory Framework: A 2026 Outlook

    Highlights Monitoring plan deadlines under New York’s mandatory greenhouse gas (GHG) reporting program (Part 253) begin September 1, 2026, with first emissions data reports due June 1, 2027. The New York State Department of Environmental Conservation’s (NYSDEC) 2026 Regulatory Agenda signals additional rulemakings ahead, including a potential statewide GHG emissions reduction program. NYSDEC finalized significant
    CategoriesFrom The Web TagsEnvironment, Holland & Knight, NEPA, Newsletter, PFAS
  • 2026-04-06

    Green Burien Partnership’s 2025 Annual Report Released – Burien Community Hub

    The City of Burien has released a 2025 annual report. We are so grateful in what you, community, partners, and funders have helped achieve this year. A crew of helpers set out to help clean up Hilltop Park. The Green Burien Partnership’s vision is to have a healthy urban forest supporting — and supported by
    CategoriesFrom The Web TagsCity of Burien, Environment, Green Cities Partnership, Parks
  • 2026-04-02

    EPA Boosts Biofuel Mandates in Final Renewable Fuel Standard Rule for 2026-2027

    Highlights The U.S. Environmental Protection Agency (EPA) has finalized a rule setting record-high levels for U.S. blending of biofuels. EPA estimates the rule will require a 60 percent increase of biodiesel and renewable diesel production and use compared to 2025 levels. This Holland & Knight alert summarizes policy changes in the final rule and their
    CategoriesFrom The Web TagsAirline Industry, Environment, EPA, Holland & Knight, Sustainable Aviation Fuels

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Upcoming Events

  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
    Zoom (Virtual Meeting)
    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

    [...]
  • Commercial Aviation Work Group
    Add to CalendarMThursday Sep 3, 10:00am - 1:30pm
    Virtual Meeting (Zoom)
    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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