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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.

TagEnvironmental Impact Statement(325)

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  • 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
  • 2001-08-09

    EXH AR051001: NMFS Salmon Essential Fish Habitat Consultation Letter for Sea-Tac Airport Master Plan Update Improvements

    NMFS No. WSB-00-318. Letter dated August 9, 2001 from NOAA National Marine Fisheries Service (NMFS) Acting Regional Administrator Donna Darm to Lowell H. Johnson, Manager Airport Division, Federal Aviation Administration (FAA), regarding Essential Fish Habitat (EFH) consultation under Magnuson Stevens Fishery Conservation and Management Act (MSA) Section 305(b)(2) and 50 CFR 600 for Master Plan
    TagsACC, Army Corp of Engineers, Environmental Impact Statement, FAA, Pollution Control Hearings Board, Salmon, Sea-Tac AirportFolderBox 21
  • 2001-08-09

    EXH AR051004: FAA Letter to Army Corps of Engineers Re: STIA Third Runway Environmental Re-Evaluation

    FAA Northwest Mountain Region letter dated August 9, 2001, from Lowell H. Johnson (Manager, Airports Division) to Colonel Ralph Graves (District Engineer, U.S. Army Corps of Engineers, Seattle District Office) regarding Seattle-Tacoma International Airport third runway project. References May 22 meeting and April 30 Memorandum for Record. Describes two written environmental re-evaluations of the Final
    TagsACC, Army Corp of Engineers, Environmental Impact Statement, FAA, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 21
  • 2001-08-08

    EXH AR1270: FAA Record of Decision — Environmental Reevaluation for Master Plan Update Development Actions, Sea-Tac International Airport

    FAA Northwest Mountain Region Record of Decision (ROD) dated August 8, 2001, determining that no supplemental EIS is required for Port of Seattle Master Plan Update (MPU) development actions at Seattle-Tacoma International Airport, including the Third Runway project. Relies on 1996 Final EIS and 1997 Supplemental EIS (FSEIS). Two environmental reevaluations (Appendix A and Appendix
    TagsACC, Environmental Impact Statement, FAA, NEPA, Pollution Control Hearings Board, Sea-Tac Airport, Third RunwayFolderBox 21
  • 2001-08-01

    EXH AR050792: Supplemental Information — Cumulative Impacts to Wetlands and Streams, STIA Master Plan Update Improvements

    Parametrix, Inc. report prepared for Port Of Seattle on cumulative impacts to wetlands and streams from Seattle-Tacoma International Airport Master Plan Update improvements, August 2001 (AR 050792, Exhibit 1267). Covers land use changes in Miller Creek and Des Moines Creek watersheds, wetland inventories, soil survey maps, aerial photograph analysis, stream conditions and fish habitat in
    TagsACC, Des Moines Creek, Environmental Impact Statement, Miller Creek, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac AirportFolderBox 21
  • 2001-06-22

    Exhibit 73: TCP Recommendations for 401 Certification — Port Of Seattle Third Runway

    Memorandum from Ching-Pi Wang to Ann Kenny (cc: Ray Hellwig, Roger Nye, John Wietfeld, Steve Alexander) dated June 22, 2001, outlining Toxics Cleanup Program (TCP) recommendations for 401 certification related to the Port Of Seattle Third Runway project. Three recommendations: (1) Port Of Seattle to develop a plan by September 14, 2001 to monitor contaminant
    TagsACC, Ecology, Environmental Impact Statement, MTCA, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 08
  • 2001-06-19

    EXH AR1255: FAA Letter to U.S. Army Corps of Engineers on Third Runway — New Technologies, MSE Wall, and Section 106 Activities

    FAA Northwest Mountain Region letter dated June 19, 2001, from FAA to Ms. Muffy Walker, U.S. Army Corps of Engineers Regulatory Branch Seattle District Office, following up on May 31, 2001 letter. Addresses three issues raised in April 30, 2001 Memorandum for the Record regarding the Port of Seattle third runway at Seattle-Tacoma International Airport
    TagsACC, Environmental Impact Statement, FAA, Mechanically Stabilized Earth, Miller Creek, Pollution Control Hearings Board, Third RunwayFolderBox 21
  • 2001-06-18

    EXH AR050666: Letter of Transmittal — Borrow Area 3 Wetland Protection Swale, Third Runway Project

    Letter of transmittal dated June 18, 2001 from Michael Bailey, P.E. (Senior Principal, Hart Crowser) to Jim Kelley at Parametrix, Job No. 4978-06, transmitting four draft figures for the Third Runway Project Borrow Area 3 Wetland Protection Swale: Figure 1 Post-Reclamation Topography and Drainage Facilities, Figure 2 Typical Cross Sections, Figure 3 Post-Reclamation Topographical Detail,
    TagsACC, Ecology, Environmental Impact Statement, Pollution Control Hearings Board, Port Of Seattle, Third RunwayFolderBox 21
  • 2001-05-31

    EXH AR050568: NMFS Biological Opinion Letter — STIA Master Plan Update Improvements, Chinook Salmon ESA Section 7 Consultation and Essential Fish Habitat

    Letter dated May 31, 2001 from NMFS Northwest Region (Seattle, WA) to Lowell H. Johnson, FAA Airport Division Manager, concurring with the ‘may affect, not likely to adversely affect’ determination for threatened Puget Sound chinook salmon (Oncorhynchus tshawytscha) and designated critical habitat under ESA Section 7(a)(2) for Seattle-Tacoma International Airport (STIA) Master Plan Update Improvements
    TagsACC, Environmental Impact Statement, FAA, Pollution Control Hearings Board, Salmon, Sea-Tac AirportFolderBox 21
  • 2001-05-09

    EXH AR029170: 401 Permit Decision-Making Sea-Tac Airport Third Runway — Low Flow Analysis Meeting Notes, May 9, 2001

    Final draft meeting notes prepared by Kate Snider (Floyd & Snider Inc.) from a May 9, 2001 technical meeting on Low Flow Analysis for the Sea-Tac Airport Third Runway 401 Permit Decision-Making process. Attendees included Ann Kenny and Dave Garland (Dept. of Ecology), Kelly Whiting (King County), Keith Smith (Port Of Seattle), Joe Brascher (AquaTerra),
    TagsACC, Ecology, Environmental Impact Statement, Pollution Control Hearings Board, Port Of Seattle, Third Runway, Water QualityFolderBox 11

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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

    [...]

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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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    "Seattle-Tacoma International Airport Environmental Assessment for the Sustainable Airport Master Plan Near-Term Projects: Chapter 1, Introduction and Purpose & Need" — , 2025

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