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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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  • 2002-01-01

    PCHB Doc 002384: Order Granting Summary Judgment on Issue 14 — ACC and CASE v. Ecology and Port Of Seattle (PCHB 01-160)

    Pollution Control Hearings Board (PCHB) case PCHB 01-160 order granting summary judgment in favor of Port Of Seattle on Issue 14 (SEPA compliance). ACC (Airport Communities Coalition) and CASE (Citizens Against Sea-Tac Expansion) appealed the §401 water quality certification issued by Ecology, a prerequisite for a §404 dredge and fill permit from the U.S. Army
    TagsACC, CASE, PCHB, Pollution Control Hearings Board, SEPA, Third RunwayFolderBox 02
  • 2001-12-05

    EXH AR030790: Ecology Letter to San Juan County — Ayer Property Wetland Conversion Concerns, Orcas Island

    Letter dated December 5, 2001 from Sarah Suggs, Wetlands Specialist, Washington State Department of Ecology (Northwest Regional Office) to Grant Beck, Director, San Juan County Permit Center, regarding the Ayer property wetland restoration proposal on Orcas Island. Ecology characterizes the proposal as a wetland conversion (not restoration) under Chapter 90.48 RCW and Chapter 173-201A WAC,
    TagsACC, Ecology, Environment, Pollution Control Hearings Board, RCW, SEPA, Water QualityFolderBox 12
  • 2001-11-02

    PCHB AR006202: ACC’s Separate Statement of Legal Issues — Airport Communities Coalition v. Ecology and Port Of Seattle, PCHB No. 01-160

    ACC’s Separate Statement of Legal Issues filed by Airport Communities Coalition (ACC) in PCHB Case No. 01-160 before the Pollution Control Hearings Board for the State of Washington, against the State of Washington Department of Ecology and Port Of Seattle. Filed November 2, 2001 via fax, received November 5, 2001. Lists 28 legal issues challenging
    TagsACC, Airport Communities Coalition, Clean Water Act, Pollution Control Hearings Board, SEPA, Third RunwayFolderBox 03
  • 2001-10-17

    EXH AR024334: SEPA DNS — FAA Terminal Radar Approach Control (TRACON) Facility, STIA

    In October 2001, the Port of Seattle issued a Determination of Non-Significance (DNS) under the Washington State Environmental Policy Act (SEPA) for a proposed FAA Terminal Radar Approach Control (TRACON) facility at Seattle-Tacoma International Airport. The project involved leasing a 19-acre site to the FAA for construction of a new 50,000-square-foot, two-story building to replace the existing TRACON located in the airport's main terminal, with the facility tracking all aircraft within 60 miles of Sea-Tac. The Port concluded that the project would not have a probable significant adverse impact on the environment, meaning a full Environmental Impact Statement was not required.
    TagsACC, FAA, Pollution Control Hearings Board, Port Of Seattle, SEPA, TRACONFolderBox 10
  • 2001-08-10

    EXH AR051006: Addendum #4 to STIA Master Plan FEIS and FSEIS — Borrow Source Areas 3 and 4 and FAA NEPA Reevaluation Document

    Port of Seattle Addendum #4 (POS SEPA No. 01-16, August 10, 2001) to the Seattle-Tacoma International Airport Master Plan Final Environmental Impact Statement (FEIS) and Final Supplemental Environmental Impact Statement (FSEIS) issued May 13, 1997. Addresses project design changes to Borrow Source Areas 3 and 4 for third runway embankment fill material excavation, and incorporates
    TagsACC, Environmental Impact Statement, NEPA, Pollution Control Hearings Board, Port Of Seattle, SEPA, Third RunwayFolderBox 21
  • 2001-03-30

    EXH AR049973: Final SEPA Determination of Non-Significance (DNS) — Alaska Airlines Maintenance Facility Expansion

    Port of Seattle Final SEPA Determination of Non-Significance (DNS), POS SEPA No. 01-08, dated March 30, 2001, for the Alaska Airlines Maintenance Facility Expansion at Seattle-Tacoma Airport, north of South 188th Street and west of 28th Avenue South. The proposed project expands and remodels existing Alaska Airlines maintenance facilities including offices, repair shops, parts storage,
    TagsACC, Aircraft Maintenance, Alaska Air, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, SEPAFolderBox 21
  • 2001-03-26

    Exhibit 2063: Ecology CZMA Status Letter for Port Of Seattle Sea-Tac Master Plan Update (1996-4-02325)

    Washington State Department of Ecology mid-point status letter dated March 26, 2001, addressed to Tom Mueller (Army Corps of Engineers, Seattle District) and Elizabeth Leavitt (Port Of Seattle Aviation Environmental Programs), regarding Coastal Zone Management Act (CZMA) Consistency review for the Port Of Seattle’s Master Plan Update for SeaTac International Airport, project number 1996-4-02325. Ecology
    TagsACC, Clean Water Act, Ecology, Pollution Control Hearings Board, Sea-Tac Airport Master Plan, SEPAFolderBox 12
  • 2001-03-06

    EXH AR049967: Addendum to STIA North Electric Service Upgrade Determination of Non-Significance

    Port of Seattle SEPA addendum (POS SEPA No. 01-05, AR 049967) dated March 6, 2001, for the Seattle-Tacoma International Airport North Electric Service Upgrade project. Documents a revised proposal for the North Main Service Point site location and 12.5 kV cable route connecting to the Bow Lake Substation via International Boulevard near South 176th Street.
    TagsACC, Construction, Environmental Review, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, SEPAFolderBox 21
  • 2001-01-25

    EXH AR023689: Notes 3RW Public Meetings & Hearings Jan 26-27 2001

    These are prepared talking points for Washington State Department of Ecology officials attending public meetings on January 26-27, 2001, regarding the proposed Third Runway (3RW) at Seattle-Tacoma International Airport. The notes address 17 anticipated public questions covering topics such as Ecology's 401 Water Quality Certification review process, the use of Port-funded consultants, SEPA compliance, wetlands impacts, and whether the project was receiving special political consideration. Officials emphasized that no approval would be granted until the project demonstrated full compliance with all applicable environmental laws and regulations.
    TagsACC, Ecology, NPDES, Pollution Control Hearings Board, SEPA, Third Runway, Water QualityFolderBox 10
  • 2001-01-24

    EXH AR024356: Letter to Ecology Requesting Admin Order Lagoon #3 Bypass; SEPA Addendum IWS Lagoon #3 Upgrades & Expansion

    The Port of Seattle requested regulatory approval to temporarily take Lagoon #3, part of Seattle-Tacoma International Airport's industrial wastewater treatment system, out of service from April through December 2002 for remediation and expansion work. The project aimed to increase the lagoon's storage capacity from 26 million gallons to 76 million gallons, add a protective liner, and rebuild berms to prevent untreated wastewater from seeping into the ground. During the construction period, some untreated industrial wastewater flows could potentially be released into Des Moines Creek as unavoidable bypasses.
    TagsACC, Des Moines Creek, NPDES, Pollution Control Hearings Board, Port Of Seattle, SEPA, Water QualityFolderBox 10

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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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