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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.

TagSea-Tac Airport(2025)

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  • 2002-01-28

    EXH AR027041: Photographs by Peter Eglick During Site Visit on January 28, 2002

    Photographs taken by Peter Eglick during a site visit on January 28, 2002, filed as part of the Administrative Record (AR 027041–027043). The images show ground-level views of a dark gravelly or paved surface with water pooling and streaking, possibly documenting stormwater, contamination, or site conditions at or near Sea-Tac Airport.
    TagsACC, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport
  • 2002-01-22

    Resolution No. 3483: Port Of Seattle Commission Support for Highline School District Capital Facilities Improvement Ballot Measure

    In January 2002, the Port of Seattle Commission passed Resolution No. 3483 to formally support the Highline School District's $189.5 million Capital Facilities Improvement Bond, which was on the March 12, 2002 ballot. The resolution reaffirmed the Port's commitment to contribute $50 million as part of a $200 million partnership with Washington State and the FAA for noise insulation and ventilation improvements at the 15 Highline schools most impacted by Seattle-Tacoma Airport aircraft noise. The funding partnership was contingent on Highline District voters approving the bond measure, which would also finance broader facility and technology upgrades across the district's aging school buildings.
    TagsFAA, Highline Schools, Port Of Seattle Commission, Sea-Tac Airport, Sound Insulation
  • 2002-01-17

    EXH AR053252: Third Runway FLAC Analysis of MSE Walls — Hart Crowser Draft Memorandum

    Draft memorandum dated January 17, 2002 from Hart Crowser engineers Doug Lindquist, Reda Mikhail, and Michael Bailey to Jim Thomson (HNTB Corporation), project number 4978-40, regarding FLAC (finite difference model) seismic analysis of three proposed mechanically stabilized earth (MSE) retaining walls for the Third Runway project at Seattle-Tacoma International Airport. Analyses cover four wall sections
    TagsACC, Earthquake, Mechanically Stabilized Earth, NEPA, Pollution Control Hearings Board, Sea-Tac Airport, Third Runway
  • 2002-01-11

    EXH AR053235: Geotechnical Input to MSE Wall Design, Third Runway Embankment

    Memorandum dated January 11, 2002, from Michael Bailey P.E. and Barry Chen P.E. of Hart Crowser, Inc. to Jim Thomson P.E. of HNTB Corporation, regarding geotechnical design parameters for Third Runway MSE (Mechanically Stabilized Earth) wall design at Sea-Tac Airport. Document AR 053235-053237 covers minimum factors of safety for static and seismic stability per 1996-2000
    TagsACC, FAA, Mechanically Stabilized Earth, Pollution Control Hearings Board, Sea-Tac Airport, Third Runway
  • 2002-01-11

    PCHB AR 005457: Port Of Seattle Memorandum in Support of Motion to Compel Depositions and for Limitation on Entry onto Land

    In early 2002, the Port of Seattle filed a legal memorandum seeking to compel the Airport Communities Coalition (ACC) to make its witnesses available for deposition and to place limits on a requested inspection of Port property near Sea-Tac Airport. The Port objected to ACC's demands for unrestricted site access for 17 people, unlimited environmental sampling across 18 acres of wetlands and multiple creeks, and refusal to disclose sampling locations or methods in advance. ACC, in turn, refused to schedule any depositions until the site visit dispute was resolved.
    TagsACC, Airport Communities Coalition, PCHB, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport
  • 2002-01-09

    EXH AR026627: Transmittal Form & Errata — STIA Master Plan Update Natural Resources Mitigation Plan Corrections (Jan 2002)

    This January 2002 transmittal from Parametrix, Inc. to the Washington State Department of Ecology submits corrections to the Seattle-Tacoma International Airport Master Plan Update Natural Resources Mitigation Plan (NRMP, November 2001). The corrections include a revised reference list, an errata sheet fixing citation errors throughout the report, and an updated Table 3.1-4 that adjusts the total acreage of wetlands affected by mitigation activities from 43.34 to 44.36 acres. Additional text corrections clarify wetland category designations and update various reference callouts across multiple sections of the report.
    TagsACC, Auburn Wetland, Ecology, Pollution Control Hearings Board, Port Of Seattle, SAMP, Sea-Tac Airport, Third Runway
  • 2002-01-09

    EXH AR053230: Hart Crowser Memorandum — Stability Review of RECo 30% Design, Sea-Tac Third Runway Embankment Project

    Memorandum dated January 9, 2002, from Barry S. Chen, P.E., and Michael Bailey, P.E., Hart Crowser, Inc., to Jim Thomson, P.E., HNTB (project 4978-30), reviewing RECo 30% design for NSA, West, and South/MSE walls of the Sea-Tac Third Runway Embankment Project. Hart Crowser performed independent limit equilibrium analyses (SLOPE/W) and FLAC finite difference modeling to
    TagsACC, Construction, Mechanically Stabilized Earth, Pollution Control Hearings Board, Sea-Tac Airport, Third Runway
  • 2002-01-01

    Sea-Tac Airport Third Runway Embankment Construction Earthwork (2002)

    Aerial photograph showing large-scale earthwork and grading operations during construction of Seattle-Tacoma International Airport's third runway (Runway 16C/34C). The image shows the runway surface and surrounding excavated terrain, with the existing airport facilities and control tower visible in the background.
    TagsAirport Expansion, Construction, Runways, Sea-Tac Airport, Third Runway
  • 2002-01-01

    FAR Part 150 Study Table: Airport Noise Restrictions and FAR Part 161 Compliance Requirements

    A table from the Sea-Tac International Airport FAR Part 150 Study listing airport actions (such as limiting aircraft by noise level, time of day, type, and runway use) and indicating whether each action definitively requires FAR Part 161 compliance or may potentially trigger it. Actions including limiting training activities, restricting runway use, and lease provisions indirectly affecting noise are marked with '?' under 'Requires Part 161' but 'Yes' under 'May Trigger Part 161.'
    TagsNoise, Part 150, Part 161, Richard Kennedy, Sea-Tac Airport
  • 2001-12-28

    EXH AR027061: Ecology Acknowledgment of Waste Discharge Permit Application WA-002465-1 and Port Of Seattle NPDES Permit Renewal Submission for Sea-Tac Airport

    AR027061. Two letters dated December 2001 regarding NPDES Permit WA-002465-1 for Seattle-Tacoma International Airport. First: Washington Department of Ecology (Tricia Miller, Permit Coordinator, Northwest Regional Office) acknowledges receipt of a waste discharge permit application from Michael Feldman, Director of Aviation Facilities, Port Of Seattle, received December 21, 2001; contact Ed Abbasi at (425) 649-7227. Second
    TagsACC, Ecology, NPDES, Pollution Control Hearings Board, Port Of Seattle, Sea-Tac Airport, Stormwater

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  • StART SEA Stakeholder Advisory Round Table
    Add to CalendarMWednesday Aug 26, 5:00pm - 7:00pm
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    START meetingagenda 2026826 final 0 pdf

    Meeting Objectives Introduce the primary feedback themes identified by StART members regarding StART’s Operating Procedures and determine areas that may warrant future discussion. 5:00 PM – Welcome Meeting Management Welcome Lead: Andrés Mantilla, Facilitator, Uncommon Bridges; Wendy Reiter, Airport Managing Director, POS 5:15 PM – Dinner: All participants eat. 5:30 PM – StART Operating Procedures

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    Cawg agenda sep 3 26 virtual pdf

    Meeting Agenda 10:00 a.m. – 10:15 a.m. | Welcome – Evan Nordby, Chair a. Introductions and Agenda Reviewb. Status of appointments and non-voting member invitationsc. Other updates as necessary 10:15 a.m. – 11:00 a.m. | Is it practical and legal to operate the western Washington [Puget Sound] airports as a single airport system? – Consultant

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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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