Skip to content
  • STNI
  • Statistics
    • Ops and Passengers
      • King County International Airport (Boeing Field) Annual Operations
    • Financials
    • Aviation fuel uplift in the State of Washington 2018 – 2025
      • Aviation Fuel Tax Revenue in the State of Washington 1983-2025
      • Aviation Fuel Uplift at Sea-Tac Airport
    • Air Quality Monitoring
    • Flight Tracking
      • Flow and Flight Tracks
      • Five Year Comparison
      • Busiest Hours and Days
    • SEL Noise Reports & Graphs
      • About The Permanent Noise Monitors
      • Minutes of Quiet by Noise Monitor
      • Noise Events mapped
      • Noise Events (SEL)
    • Runways
    • Employees
    • Real Estate
      • Port Properties and Trees mapped
    • Parking
  • Events
  • Protest
    • Regular Events
    • Policy
      • Legislative Agenda 2027
      • Airport mitigation for the twenty first century
      • Port Dracula
    • Complain about a particular flight
    • Advocacy Organizations
    • Media Outlets
    • People
    • The Port of Seattle
      • Commission Meetings
      • Public Records Requests
      • StART
      • Highline Forum
    • Contact Your Electeds
  • Resources
    • FAQs
      • FAA Occurrences/Accidents/Indents
    • The SAMP
      • SAMP Public Comment Template
        • Two versions of Appendix K: NEPA/SEPA 2018 vs 2023
      • SAMP NTP: 31 projects by the numbers
      • SEPA Draft EIS (2026)
      • SAMP Record of Decision/FONSI (2025)
      • SAMP Draft EA (October 2024)
      • 2018 Scoping
    • Port Packages
      • Port Package Property Costs
      • Port Packages mapped
      • The Port Package Explainer
      • So you want a (first-time) Port Package? Start here
      • Port Package Looker Upper
      • How do I determine if I have a Port Package or Avigation Easement?
      • Progress on Port Package Update legislation
      • Having a Port Package Problem?
      • Port Package Site Visit Follow-Up
    • Document Library
    • Explainers
      • The Airport Law Cheat Sheet
      • The Grant Explainer
    • External Articles
    • History
      • Timeline
      • The Sea-Tac Communities Plan
        • Sea-Tac Communities Plan – Planning Maps
      • PSRC Third Runway Decision Process
    • Studies
    • Videos
  • Stories
  • Mission
  • Subscribe
  • Contact
Scroll down to content

Get InformedStay Informedx

I understand that you will never share my information with anyone, you will only use it to keep me updated on relevant events and that I may unsubscribe at any time.

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.

TagClean Air Act(22)

Advanced Search Options

  • Dates
  • Media
    • External Articles
    • Images
    • PDFs
    • Video
    • Audio
  • Order By
  • 2026-09-23

    Codoni v. Port Of Seattle, No. 25-2830 (9th Cir. 2026)

    Ninth Circuit Court of Appeals published opinion in Codoni v. Port of Seattle, No. 25-2830 (D.C. No. 2:23-cv-00795-JNW), filed September 23, 2026, authored by Judge Paez, reversing the Western District of Washington (Judge Jamal N. Whitehead) denial of defendants’ motion to dismiss. Plaintiffs Cindy Codoni, Michelle Geer, Horace Cathcart, Amy France, and Tamara Chakos, residents
    TagsAlaska Air, Clean Air Act, Codoni v Port of Seattle, Delta, Hagens-Berman, Ninth Circuit Court of AppealsFolderHagens-Berman
  • 2026-04-01

    2030 climate action plan

    The City of Boston’s 2030 Climate Action Plan outlines strategies to achieve carbon neutrality by 2050, improve climate resilience, and advance environmental justice. The plan integrates greenhouse gas reduction and resilience measures while targeting health, justice, and quality-of-life outcomes for Boston residents.
    TagsClean Air Act, Climate, community engagement, Environmental JusticeFolderBoston/Logan
  • Powerplants Socialfeature 1
    2025-11-25

    EPA asks court to strike down fine particulate air pollution standard, threatening public health and undermining obligation under Clean Air Act

    WASHINGTON – The U.S. Environmental Protection Agency (EPA) filed a motion for vacatur in the Court of Appeals for the D.C. Circuit, asking the court to strike down the health-based fine particulate matter (PM2.5) standard the agency had strengthened last year. Kentucky V EPA Motion Vacatur “EPA’s motion is a blatant attempt to avoid legal
    CategoriesFrom The Web TagsClean Air Act, Clean Air Task Force, EPA, NAAQS
  • 2025-11-24

    Respondents’ motion for vacatur

    This is a legal filing in the U.S. Court of Appeals for the D.C. Circuit in which the U.S. Environmental Protection Agency asks the court to vacate its own previously issued air quality standard, arguing that EPA lacked the statutory authority to revise the standard without completing a full review process. The case centers on National Ambient Air Quality Standards (NAAQS) under the Clean Air Act, not airport noise policy. This document does not contain information relevant to Sea-Tac Airport noise policy.
    TagsCEQ, Clean Air Act, Environmental Impact Statement, EPA, FAA, NAAQSFolderEPA
  • 2025-01-23

    Bill analysis: HB 1303 — Increasing environmental justice by improving government decisions

    HB 1303 is a Washington State bill focused on environmental justice, not Sea-Tac Airport noise policy. It proposes adding environmental justice considerations to the State Environmental Policy Act (SEPA) review process and prohibiting certain air pollution permits in overburdened communities. This document does not contain relevant content for a Sea-Tac Airport noise policy archive.
    TagsClean Air Act, Environmental Justice, HB1303, SEPA, Washington State LegislatureFolderLegislation
  • 2024-12-13

    Comments on the FAA EA: SAMP Draft Environmental Assessment (Debi Wagner)

    This document presents formal public comments opposing an FAA Environmental Assessment for expansion projects at Seattle-Tacoma International Airport. The author argues that the stated justification for expansion is misleading, contending that airport growth would not automatically occur without new gates and terminals since FAA safety rules already cap the number of aircraft operations. Additional concerns raised include disproportionate health burdens on nearby communities, unreliable air pollution modeling, inadequate environmental justice analysis, and failure to properly assess cumulative public health and climate impacts.
    TagsClean Air Act, Debi Wagner, Environmental Impact Statement, Environmental Justice, FAA, NAAQS, NEPA, SAMP, SAMP Draft EA, Sea-Tac Airport, Sustainable Airport Master PlanFolder2024 Comment
  • 2024-05-13

    RCW 70.94.037: Transportation activities—”Conformity” determination requirements

    Washington State law RCW 70.94.037 requires that any transportation plan, program, or project in areas that don't meet federal air quality standards must be shown to conform with the state's air quality implementation plan before it can be approved or funded. The conformity determination must be made by the responsible state agency, local government, or metropolitan planning organization overseeing the project. Projects limited strictly to preservation or maintenance work are exempt from this requirement.
    TagsClean Air Act, Conformity, RCW, transportation, Washington State LegislatureFolderSP #2
  • 2024-02-16

    Port Of Seattle’s Reply in Support of Motion to Dismiss Plaintiffs’ Second Amended Complaint

    The Port of Seattle filed this legal reply brief seeking dismissal of a lawsuit brought by five plaintiffs (Codoni, Geer, Cathcart, France, and Chakos) related to Seattle-Tacoma International Airport operations. The Port argues that the plaintiffs' claims are barred by federal preemption under the Civil Aeronautics Act, the Airline Deregulation Act, and the Federal Aviation Act, which collectively give the federal government exclusive authority over aviation and airport operations. The Port also contends that the plaintiffs lack legal standing to bring inverse condemnation claims under the 'subsequent purchaser rule.'
    CategoriesLitigation TagsAirline Deregulation Act, Clean Air Act, Hagens-Berman, Litigation, Port Of Seattle, Sea-Tac AirportFolderHagens-Berman
  • 2024-02-16

    Alaska Air Group and Delta Air Lines, Inc.’s Joint Reply in Support of Motion to Dismiss Plaintiffs’ Second Amended Complaint

    Alaska Air Group and Delta Air Lines filed a joint reply in federal court seeking dismissal of a class-action lawsuit brought by Seattle-area residents over noise and air quality impacts from flights at Seattle-Tacoma International Airport. The airlines argue that federal law—including the Airline Deregulation Act and the Clean Air Act—preempts the plaintiffs' state-law claims, leaving no room for local or state courts to regulate airline flight operations. The case, heard in the U.S. District Court for the Western District of Washington, centers on whether residents can use state law to challenge airline service to Sea-Tac Airport.
    TagsAirline Deregulation Act, Alaska Air, Clean Air Act, Delta, FAAFolderHagens-Berman
  • 2022-09-01

    Destination 2030: Air quality conformity

    This document outlines the air quality conformity analysis for Destination 2030, the long-range transportation plan for the central Puget Sound region, ensuring that planned transportation projects meet federal and state clean air standards. The region, previously designated as a nonattainment area for carbon monoxide, ozone, and particulate matter, was redesignated as a maintenance area after meeting federal air quality standards, with EPA approvals granted between 1996 and 2001. The conformity process involved consultation with agencies including the EPA, FHWA, and Washington State Department of Ecology to ensure new transportation projects do not cause or worsen air quality violations.
    TagsClean Air Act, Conformity, NAAQS, PSRC, Puget Sound Regional CouncilFolderDestination 2030 CD

Posts pagination

Page 1 Page 2 Page 3
Sidebar On/Off

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...

  • Sea-Tac Noise.Info
  • Connect with STNI

    • Subscribe
    • Port Package Problem?
    • Donate
    • Podcast
    • Socials
      • Facebook
      • X (Twitter)
      • Bluesky
      • Instagram
  • Learn

    • Frequently Asked Questions
    • Explainers
    • Youtube
    • Research Requests
    • Complain about one flight
  • Goals

    Fulfill the promises of 1976:
    • Compensation
    • Reduced noise
    • Improved air quality
    • Environmental remediation
Login/Register
©2026•Data Privacy

Message

We use cookies to provide basic functionality. We also provide access to search engines in order to provide site analytics. We do not sell or share your data.
V V