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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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  • 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
  • 2026-06-01

    Night Flights in Europe: Trends, Impacts and Policy Responses

    Aviation Environment Federation report for UECNA (June 2026) analyzing night flight operations (23:00–07:00) at 31 key European airports. Documents approximately 210,000 more night arrivals and 140,000 more night departures at EU27+EFTA airports in 2023 compared to 2005, with night flights comprising 5.5% of total traffic. Night flights per airport in 2025 ranged from 7,578 to
    TagsEurope, Health, Noise, UECNA, WHOFolderUECNA
  • 2026-05-28

    Formal Comment by Jeffrey Bogen: Seattle-Area Metroplex (SAMP) Environmental Impact Statement — Health Effects of Aviation Noise: Deficiencies and Corrections

    A Des Moines resident submitted a formal comment arguing that the Seattle-Area Metroplex Environmental Impact Statement (SAMP EIS) significantly underestimates the health risks of aviation noise by omitting key peer-reviewed studies linking aircraft noise to cardiovascular disease, heart structural changes, and sleep disruption. The commenter contends that the EIS relies on outdated and methodologically flawed research, particularly FICAN studies using extrapolated rather than measured data, while ignoring more recent findings from the WHO, the HYENA Project, and a 2025 cardiac MRI study. The comment calls on the FAA to conduct a proper cumulative health effects analysis and require additional noise mitigation measures beyond the current DNL 65 dB contour threshold.
    TagsDes Moines, Environmental Impact Statement, Health, Noise, SAMPFolderAviation Committee 2025
  • 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
  • 2026-01-26

    South Korea tightens indoor air quality standards in public facilities

    Legal updates in Korea Published : Jan. 26, 2026 – 13:28:59 Jung Min-kyung Updated Law: Enforcement Rule of the Indoor Air Quality Control Act What it does: Lowers allowable indoor ultrafine dust levels in public-use facilities Took effect: Jan. 1 South Korea has strengthened indoor air quality rules for public facilities in an effort to
    CategoriesFrom The Web TagsEnvironment, Health, indoor air quality
  • Airport aerials 180928 629 3
    2025-12-02

    So you thought that Sea-Tac expansion was really underway?

    Transportation By Mike Merritt December 3, 2025 The Port of Seattle has embarked on a much-needed, massive Seattle-Tacoma International Airport expansion. But the plan is far from taking off. The projects, including a new passenger terminal with 19 new aircraft gates, still must undergo another year of environmental review and win approval by the Port
    CategoriesFrom The Web TagsAlaska Air, Health, Noise, Post Alley, SAMP, Sustainable Airport Master Plan, Third Runway
  • UWDEOHS air purifier in child’s bedroom

    A Winix-brand air purifier (logo visible on unit) sits on a hardwood floor against a teal wall in a child's bedroom, connected to a small air quality monitor device. The room contains a white nightstand and bed with patterned bedding.
    TagsAir Purifiers, Air Quality Monitors, Health, indoor air quality, UWDEOHSFolderUWDEOHS
  • 240626 Port FD PFAS 021
    2025-01-13

    Removing PFAS — Trading Forever Chemicals for a Safer Firefighting Foam

    Drawhorn, Omie January 13, 2025 Each day Port of Seattle firefighters work to keep people and property safe. Because the Port of Seattle Fire Department (POSFD) is located at Seattle-Tacoma International Airport (SEA), they protect aircraft, travelers, staff, and airport facilities. Now, in the midst of regular firefighting activities, POSFD is taking the lead on
    CategoriesFrom The Web TagsEnvironment, FAA, Health, Port Of Seattle, Press Release
  • 2024-10-24

    EPA imposes stricter standards to protect children from exposure to lead paint

    Oct. 24, 2024 at 2:04 am Updated Oct. 24, 2024 at 2:33 pm      1 of 2 | FILE – Contractors Luis Benitez, foreground, and Jose Diaz, background, clean up lead paint in a contaminated building, Feb. 23, 2006, in Providence, R.I. (AP Photo/Chitose Suzuki) By  MATTHEW DALY The Associated Press WASHINGTON (AP) — Two weeks
    CategoriesFrom The Web TagsEPA, Health, Lead
  • 2024-08-07

    Study suggests ultrafine particles linked to 1,100 deaths per year in Montreal and Toronto

    Study followed 1.5 million people over 15 years Joe Bongiorno · The Canadian Press · Posted: Aug 07, 2024 3:49 PM PDT | Last Updated: August 7 McGill professor breaks down how vehicle and industry pollution affect our health Duration 4:46 Scott Weichenthal is with McGill University’s department of epidemiology and biostatistics, and is the
    CategoriesFrom The Web TagsHealth, Ultrafine Particles

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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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