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

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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.

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Letter dated December 18, 2025 from Port Of Seattle Commission President Toshiko Hasegawa to Des Moines Mayor Traci Buxton responding to City Council concerns about the Sound Insulation Repair and Replacement Pilot Program (SIRRPP). Details eligibility requirements: homes inside FAA-approved Noise Remedy Boundary, sound-insulated prior to January 1, 1993, testing at or above 45 dB DNL interior noise levels. Reports 262 homes in 66-69 DNL contours targeted, 135 homeowners applied, 117 received acoustic testing, 5 homes tested eligible. Describes $5 million Port tax levy funding, FAA Airport Improvement Program (AIP) grant approval covering up to 80% of design and construction costs, and Part 150 Noise and Land Use Compatibility Study underway. Expansion to remaining 209 homes planned for early 2026.

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