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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.

TagNoise Mitigation(218)

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  • Milgard Replacement Product Lifetime Limited Warranty

    Milgard Manufacturing LLC warranty document for windows and doors manufactured after January 1, 2026 for installation into existing structures. Provides lifetime coverage for original purchasers while they own and occupy their residential dwelling, and 10-year limited warranty for all other owners.
    TagsNoise Mitigation, WindowsFolderNoise
  • End of Block Seapart150 Colored

    GIS Parcel Map — Akinlosotu Short Plat Area Near 10th and 12th Avenue South, Sea-Tac Airport Noise Review

    A GIS map showing residential parcels in the Sea-Tac Airport vicinity, centered on 10th and 12th Avenue South between South 233rd Court and South 235th Place. Green-shaded zones with question mark markers appear to indicate properties under noise impact review or acquisition consideration, bisected by a blue diagonal line likely representing a noise contour or jurisdictional boundary; street addresses and the 'Akinlosotu Short Plat' label are visible.
    TagsLand Use, Map, Noise Mitigation, Part 150, Sea-Tac AirportFolder2024
  • 2025-12-12

    LAX Motion 25 1505 Misc LAWA Land Use

    Motion presented by Councilwoman Traci Park requesting the Department of City Planning to report back within 90 days on creating an Airport Noise-Contour and Environmental Exposure Overlay Zone. The motion addresses environmental and health impacts of airport-adjacent residential development, equity concerns for low-income communities, and best-practice standards for protecting residents in airport-impacted areas.
    TagsLAX, Noise MitigationFolderLos Angeles
  • 2025-12-12

    The Sound Insulation Treatment Repair and Replacement Program Act

    The Sound Insulation Treatment Repair and Replacement Program Act, introduced by Rep. Adam Smith (WA-09), would allow the FAA to waive a rule that currently prevents federal Airport Improvement Program (AIP) funds from being used more than once on the same home. The bill addresses problems caused by poor-quality materials and faulty installations from early noise mitigation programs in the 1980s and 1990s, which left some homeowners dealing with mold, structural damage, and non-functioning insulation at their own expense. Airports would not be required to participate, but those that choose to could repair or replace defective sound insulation in homes still within the 65 DNL noise contour, provided an FAA-compliant noise auditor verifies the issues stem from improper installation or faulty materials rather than homeowner neglect.
    TagsAdam Smith, Airport Improvement Program, FAA, Noise Mitigation, Sound InsulationFolderFederal
  • 2025-10-23

    DCA South of Airport Aircraft Noise and Mitigation Study: Recommendations and Noise Analysis

    This October 2025 report from the DCA South of Airport Aircraft Noise and Mitigation Study examines how post-Metroplex airspace changes increased aircraft overflights and noise exposure for residents south of Ronald Reagan Washington National Airport, including communities in Alexandria, Fairfax, and Prince George's Counties. The study, conducted by aviation consultancy Vianair, presents recommendations and noise analysis aimed at reducing the impact of arrival and departure flight paths on affected residential populations. Note: This document pertains to DCA (Washington, D.C.), not Sea-Tac Airport.
    TagsAirspace Study, Metroplex, Noise Mitigation, Reagan National Airport, VianairFolderVianair
  • Orwall, Lee, and Keiser — Port Package Window

    TagsNoise Mitigation, Port Packages, WindowsFolderNoise Mitigation
  • 2025-08-08

    Acoustical Testing Results for SIRRPP — August 2025

    This August 2025 technical report by Harris Miller Miller & Hanson Inc. (HMMH) presents the results of interior sound insulation testing conducted at 28 homes near Seattle-Tacoma International Airport (SEA) in July 2025. Using FAA-approved measurement methods, acoustical engineers tested every habitable room in each home to determine how much aircraft noise penetrates indoors, with a threshold of 45 decibels (dB) required for a home to qualify for sound insulation assistance. Of the 28 structures tested, only two met the 45 dB qualification threshold, while nine others had at least one room exceeding that level but did not qualify under current FAA policy.
    TagsFAA, HMMH, Noise Mitigation, Sea-Tac Airport, SIRRPP, Sound InsulationFolderSIRRPP HMMH Acoustic Testing
  • 2025-06-28

    Tweed New Haven Airport to get $11 million for improvements and to address noise

    By Mark Zaretsky, Staff Writer June 28, 2025 A rendering of the proposed new terminal  Tweed New Haven Regional Airport and its operator, Avports LLC and subsidiary The New HVN LLC, want to build on the East Haven side of the airport, as seen from the land side. Courtesy of Tweed New Haven Regional Airport
    CategoriesFrom The Web TagsAviation Fuel, New Haven, Noise Mitigation
  • 2025-06-17

    DCA South of Airport Aircraft Noise and Mitigation Study Project Update

    A Vianair project update presentation to the Fairfax County Board of Supervisors Land Use Policy Committee regarding the DCA South of Airport Aircraft Noise and Mitigation Study. The study addresses changes in flight paths after the Metroplex implementation that resulted in increased overflights of residential areas south of Reagan National Airport, with objectives to reduce
    TagsNoise Mitigation, Reagan National Airport, VianairFolderVianair
  • 2025-02-26

    StART SIRRPP Update: Interior DNL Eligibility Threshold and Acoustic Testing Results — Slide 14 (February 26, 2025)

    Slide 14 of a presentation on acoustic testing for a Sea-Tac Airport noise insulation program, explaining that interior DNL (calculated as Exterior DNL minus Noise Level Reduction) is the eligibility metric, with a threshold of 45dB DNL. All 30 homes tested fell below the FAA's 45dB DNL interior noise threshold, including five Pre-1993 homes evaluated under the FAA re-insulation program.
    TagsFAA, Noise Mitigation, Sea-Tac Airport, SIRRPP, Sound Insulation, StARTFolderSIRRPP 20250226

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Upcoming Events

  • 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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