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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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  • 2003-08-29

    Plaintiff ACC’s motion for reconsideration

    The Airport Communities Coalition (ACC) asked a federal court to reconsider its ruling that allowed the Army Corps of Engineers to issue a wetlands fill permit for a Port of Seattle project. ACC argued the court overlooked a December 2001 Washington State Pollution Control Hearings Board order that effectively blocked the required water quality certification within the legally allowed one-year window, which under the Clean Water Act should have prevented the permit from being granted.
    TagsACC, Airport Communities Coalition, Army Corp of Engineers, Clean Water Act, PCHB, Port Of Seattle, RCAAFolderRCAA
  • 2003-08-26

    Request for authorization to implement sound insulation of 98 single family residences in the 2010 65 DNL noise contour

    In September 2003, the Port of Seattle Commission considered authorizing a $3.69 million program to sound-insulate 98 single-family homes near Sea-Tac Airport that fell within the projected 2010 65 DNL noise contour and were built before local noise codes took effect. The project, stemming from a 1997 Environmental Impact Statement related to the airport's third runway, aimed to reduce interior noise levels by at least 5 decibels in eligible homes in Des Moines and unincorporated King County. Funding was to come primarily from federal Airport Improvement Program grants (80%), with the remainder drawn from the Airport Development Fund, and homeowners were required to grant the Port an avigation easement in exchange for the insulation work.
    TagsAIP, Noise Remedy Program, Port Of Seattle, RCAA, Sound Insulation, Third RunwayFolderRCAA
  • 2003-08-18

    Order granting defendants’ motions for summary judgment and denying plaintiff’s motion for summary judgment

    A federal court ruled in favor of the U.S. Army Corps of Engineers and the Port of Seattle, rejecting a legal challenge by the Airport Communities Coalition — a group of cities near Sea-Tac Airport — over a Clean Water Act permit issued in December 2002 for the airport's Third Runway Project. The permit authorizes filling approximately 50 wetlands with over 23 million cubic yards of material to support construction of a new 8,500-foot runway. The court found the Corps' decision was not arbitrary or capricious under the Administrative Procedures Act's standard of review.
    TagsAirport Communities Coalition, Army Corp of Engineers, Clean Water Act, Port Of Seattle, RCAA, Third RunwayFolderRCAA
  • 2003-07-22

    Brief of amicus curiae State of Washington

    The State of Washington filed a friend-of-the-court brief in a 2003 federal case concerning the Port of Seattle's proposed third runway at Seattle-Tacoma International Airport. The case centered on whether the U.S. Army Corps of Engineers was required to include all conditions set by the Washington State Department of Ecology in its Clean Water Act Section 404 permit, after a state appeals board added sixteen conditions to the original water quality certification. Washington argued that federal law gives states sole authority to enforce their own water quality standards on federally permitted projects, and that the Corps improperly ignored nine of those sixteen conditions.
    TagsAirport Communities Coalition, Army Corp of Engineers, Clean Water Act, Pollution Control Hearings Board, RCAA, Third RunwayFolderRCAA
  • 2003-07-03

    Documents catalogued as published in 2003

    This is a library catalog page listing five legal and regulatory documents from 2003 related to environmental permitting and litigation. The documents include an NPDES water discharge permit (No. WA-002465-1) issued by the Department of Energy, and three entries related to a legal case (ACC v. Colonel Graves) involving a Section 404 appeal and motions for summary judgement filed through the Army Corps of Engineers. A comment letter on the NPDES Draft Permit is also catalogued.
    TagsACC, Airport Communities Coalition, Army Corp of Engineers, Clean Water Act, NPDES, RCAAFolderRCAA
  • 2003-06-24

    Third Runway project budget update

    A 2003 Port of Seattle memo updates the Commission on the ballooning costs of the Sea-Tac Third Runway project, which had grown from an approved budget of $773 million to an estimated $1.1–1.15 billion due to environmental permitting delays, litigation, and stricter regulatory requirements. The project, intended to reduce airport congestion by allowing simultaneous landings on two runways during poor weather, was projected for completion in 2008 if construction contracts were advertised promptly. Key cost drivers included $151 million in additional environmental permit requirements, $55 million in delay costs, and $55 million in project scope additions.
    TagsBudget, Environmental Impact Statement, Port Of Seattle, RCAA, Sea-Tac Airport, Third RunwayFolderRCAA
  • 2003-06-24

    Third runway update: Capital Improvement Program (CIP) briefing

    This June 2003 Capital Improvement Program briefing provides an update on the Third Runway project at Seattle-Tacoma International Airport. It outlines the revised 1999 project cost of $773 million, a target completion date of Fall 2006, and the assumption that an Army Corps of Engineers 404 Permit would be obtained by December 1999. A project schedule chart shows the planned phases—permitting, runway embankment, and runway pavement—spanning from 1999 through 2006, along with progress made to date.
    TagsPort Of Seattle, Port Of Seattle Commission, RCAA, Sea-Tac Airport, Third RunwayFolderRCAA
  • 2003-05-16

    Fly Quiet Committee Report: Port Introduces Fly Quiet Committee at Seattle-Tacoma International Airport, Third Quarter 2002

    The Port of Seattle introduced the Fly Quiet Committee at Seattle-Tacoma International Airport to find innovative ways to reduce aircraft noise impacts on surrounding communities. The committee, made up of local citizens, city staff, and aviation representatives, developed seven key recommendations including creating detailed compliance reports, launching an airline incentive program modeled after Chicago O'Hare's point-based system, and addressing ground run-up noise through increased fines and new technologies. The report also outlines existing noise abatement flight procedures governing how aircraft depart and arrive at Sea-Tac to minimize noise over residential areas.
    TagsFly Quiet, Fly Quiet Committee, Noise Abatement Procedures, Port Of Seattle, RCAA, Sea-Tac AirportFolderFlyers
  • 2003-04-21

    RCAA comments on the draft of a renewed NPDES permit for Seattle-Tacoma

    In April 2003, the Regional Commission on Airport Affairs (RCAA) submitted formal comments criticizing a proposed water pollution permit renewal for Seattle-Tacoma International Airport, arguing that it failed to adequately protect local waterways from airport runoff and industrial wastewater. Key concerns included excessive delays in enforcing limits on harmful chemicals from aircraft de-icing operations, insufficient monitoring of stormwater containing copper and zinc harmful to fish, and a compliance schedule for wastewater treatment that stretched years beyond what regulators considered acceptable. The RCAA urged the Washington Department of Ecology to strengthen the permit's requirements and accelerate deadlines for bringing the airport into compliance with water quality standards.
    TagsRCAA, Regional Commission On Airport AffairsFolderRCAA
  • 2003-03-31

    Response to comments: NPDES proposed waste discharge permit no. WA-002465-1, Port Of Seattle, Seattle-Tacoma International Airport

    This document is a public responsiveness summary from Washington State's Department of Ecology regarding an NPDES wastewater discharge permit issued to the Port of Seattle for Seattle-Tacoma International Airport. It compiles and responds to comments received during a March 2003 public meeting and hearing, covering concerns about the airport's treated industrial wastewater, stormwater runoff, and construction runoff discharges. The summary addresses feedback from a range of stakeholders, including the Port of Seattle, local legislators, advocacy groups, and individual residents.
    TagsNPDES, Port Of Seattle, RCAA, Sea-Tac Airport, Stormwater, Water QualityFolderRCAA

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Upcoming Events

  • Stay Grounded Event: Night trains, not night planes!
    Add to CalendarMSunday Sep 13: 12:00am
    Ntnnp social media3

    For the past two years, more than 220 initiatives from 15 countries have declared September 13th as the International day for the ban of night flights at airports. In parallel, activists across Europe have been gathering for pyjama parties for night trains – coordinated in 2024 and 2025 by Back on Track and Stay Grounded.

    [...]
  • Burien Airport Committee Meeting September 15, 2026
    Add to CalendarMTuesday Sep 15: 6:00pm
    400 SW 152nd St, Burien, WA 98166
    Burien airport committee 15 sep 2026 agenda pdf pdf

    a) Part 150 Noise Study (Emily Inlow-Hood) — 15 minutes
    b) SAMP Update and Next Steps (Brian Davis and Sarah Moore) — 15 minutes
    c) Legislative Updates — 10 minutes
       • SCA (Sarah Moore)
       • Work with Sen. Orwall (Brian Davis)
    d) StART Reorganization (Jeff Harbaugh and Karen Veloria) — 10 minutes

    [...]

[See all...]


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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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