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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.

TagSound Insulation(121)

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  • 2026-09-22

    Port Package single family homeowner sound insulation handbook and documents final 2021

    Port of Seattle Single-Family Home Sound Insulation Program (SFHSIP) Owner Handbook providing guidance to homeowners on aircraft noise reduction improvements at Sea-Tac Airport. Covers program eligibility requirements including Noise Remedy Boundary and Average Interior Noise Level thresholds, FAA design criteria (DNL 45 dB, minimum 5 dB NLR), required legal documents (Owner Participation Agreement, Avigation Easement
    TagsAvigation Easement, Noise Remedy Program, Port Of Seattle, Sea-Tac Airport, Sound InsulationFolderPort Packages
  • Smith 8211 pilot program for sound insulation repair and replacement page 3

    Smith 8211 pilot program for sound insulation repair and replacement page 3

    Congressional amendment to Rules Committee Print 119-8 offered by Rep. Adam Smith of Washington, adding a new section to title XVII establishing a pilot program for sound insulation repair and replacement under 49 U.S.C. sections 47109 and 47110. The FAA would establish a pilot program at up to 4 large hub public-use airports providing a
    TagsAdam Smith, FAA Reauthorization, Legislation, Noise Remedy Program, Sound InsulationFolderLegislation
  • Smith 8211 pilot program for sound insulation repair and replacement page 2

    Smith 8211 pilot program for sound insulation repair and replacement page 2

    Congressional amendment to Rules Committee Print 119-8 offered by Rep. Adam Smith of Washington, adding a new section to title XVII establishing a pilot program for sound insulation repair and replacement under 49 U.S.C. sections 47109 and 47110. The FAA would establish a pilot program at up to 4 large hub public-use airports providing a
    TagsAdam Smith, FAA Reauthorization, Legislation, Noise Remedy Program, Sound InsulationFolderLegislation
  • Smith 8211 pilot program for sound insulation repair and replacement page 1

    Smith 8211 pilot program for sound insulation repair and replacement page 1

    Congressional amendment to Rules Committee Print 119-8 offered by Rep. Adam Smith of Washington, adding a new section to title XVII establishing a pilot program for sound insulation repair and replacement under 49 U.S.C. sections 47109 and 47110. The FAA would establish a pilot program at up to 4 large hub public-use airports providing a
    TagsAdam Smith, FAA Reauthorization, Legislation, Noise Remedy Program, Sound InsulationFolderLegislation
  • 2026-08-10

    SEA Part 150 Technical Review Committee Meeting #7 Summary

    Meeting summary for TRC Meeting #7 of the SEA Part 150 Noise Study, held August 10, 2026 via Zoom, facilitated by Ryan McMullan and Tom Fagerstrom of Port Of Seattle with ESA consultants Chris Nottoli and Scott Tatro. Topics include analysis of Noise Compatibility Program (NCP) measures: increased glideslopes for arrivals (3.0 to 3.5 degrees
    TagsNoise Abatement Procedures, Part 150, Port Of Seattle, Sea-Tac Airport, Sound InsulationFolder2024
  • Trc mtg7 part150 08102026 pdf
    2026-08-10

    SEA Part 150 Technical Review Committee Meeting #7 Summary

    Meeting summary for TRC Meeting #7 of the SEA Part 150 Noise Study, held August 10, 2026 via Zoom, facilitated by Ryan McMullan and Tom Fagerstrom of Port Of Seattle with ESA consultants Chris Nottoli and Scott Tatro. Topics include analysis of Noise Compatibility Program (NCP) measures: increased glideslopes for arrivals (3.0 to 3.5 degrees
    TagsNoise Abatement Procedures, Part 150, Port Of Seattle, Sea-Tac Airport, Sound InsulationFolder2024
  • Stcp chapter unk pg 27 seatac communities plan south reinforcement area program application

    Sea-Tac Communities Plan South Reinforcement Area Program Application Map

    A planning map from the Sea-Tac Communities Plan, sponsored by the Port of Seattle and King County, showing the south reinforcement area and its program applications including cost-sharing insulation, acquisition, purchase guarantee, and limited cost-sharing insulation zones. The map (document reference 6.6.5, page 27, POS 1075) covers grid cells N/O/P/Q rows 35–41 along Puget Sound, identifying landmarks such as Mt. Rainier High, Pacific Junior High, Midway Elementary, Highline Community College, and Parkside Elementary.
    TagsMap, Port Of Seattle, Sea-Tac Communities Plan, Sound Insulation, STCPFolderChapter 6.6.5
  • 2026-06-05

    Acoustical Testing Results for SIRRPP — June 2026

    This technical memorandum from Harris Miller Miller & Hanson Inc. (HMMH), dated June 5, 2026, presents the results of interior sound insulation testing conducted in April 2026 for 30 homes near Seattle-Tacoma International Airport as part of the SEA Repair and Replacement Program. Acoustical engineers measured how well each room in these homes reduces outside aircraft noise, finding that only 4 of the 30 structures met the FAA's minimum threshold of 45 decibels of interior noise to qualify for sound insulation treatments. An additional 16 homes had at least one room exceeding that threshold, suggesting potential benefit from window and door upgrades, though current FAA policy does not require treatment based on individual room results alone.
    TagsHarris Miller Miller & Hanson, HMMH, Noise Mitigation, Sea-Tac Airport, SIRRPP, Sound InsulationFolderSIRRPP HMMH Acoustic Testing
  • 2026-05-04

    Acoustical Testing Results for SIRRPP — May 2026

    Harris Miller Miller & Hanson Inc. (HMMH) conducted sound insulation testing at 30 homes near Seattle-Tacoma International Airport (SEA) in March 2026 to measure how much aircraft noise penetrates indoors. The study found that none of the 30 homes exceeded the FAA's 45-decibel interior noise threshold required to qualify for sound insulation treatments under current federal policy. However, nine homes had at least one individual room where interior noise levels surpassed 45 decibels, suggesting those specific rooms could benefit from upgraded windows or doors.
    TagsFAA, HMMH, Noise Remedy Program, Sea-Tac Airport, SIRRPP, Sound InsulationFolderSIRRPP HMMH Acoustic Testing
  • 2025-12-18

    Port Of Seattle Response Letter to Des Moines Mayor Traci Buxton: Sound Insulation Repair and Replacement Pilot Program

    The Port of Seattle wrote to Des Moines Mayor Traci Buxton in December 2025 to explain its Sound Insulation Repair and Replacement Pilot Program, a $5 million initiative aimed at helping homeowners near Seattle-Tacoma International Airport whose aging sound insulation packages may no longer be performing adequately. The program focuses on homes that received insulation before 1993 and are located within the FAA-approved Noise Remedy Boundary, with eligibility determined by acoustic testing showing interior noise levels at or above 45 dB DNL. Of the 117 homes tested in the initial phase, five were found eligible, and the Port plans to expand outreach to an additional 209 homes in early 2026 while pursuing FAA grant funding that could cover up to 80% of design and construction costs.
    TagsCity Of Des Moines, Noise Remedy Program, Port Of Seattle, Port Packages, Sound Insulation, Toshiko HasegawaFolderPort Packages

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Upcoming Events

  • Part 150 NCP Workshop — Burien
    Add to CalendarMSaturday Oct 17: 10:00am

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — SeaTac
    Add to CalendarMMonday Oct 19: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]
  • Part 150 NCP Workshop — Des Moines
    Add to CalendarMTuesday Oct 20: 6:00pm

    Attend a Port of Seattle open house on the Part 150 Study Noise Compatibility Program (NCP). The Part 150 program determines the noise boundary around the airport and opportunities for noise mitigation such as sound insulation.

    [...]

[See all...]


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.
read more...

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.
continue...

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