TagNoise Mitigation(259)

The Port of Seattle launched a Sound Insulation Repair and Replacement Pilot Program to assess the effectiveness of previously installed noise insulation packages in homes near Seattle-Tacoma International Airport. Authorized under Commission Order 2024-04 with a $6.5 million tax levy-funded budget—$5 million of which is reserved for design and construction—the program involved community outreach, property owner surveys, and acoustic testing throughout 2024. Properties were prioritized using an equity index to ensure underserved communities were considered, with design and construction work expected to begin in 2025.

The StART Aviation Noise Working Group met in February 2025 to review Seattle-Tacoma International Airport's Late Night Noise Limitation Program, which tracks aircraft noise between midnight and 5 AM and found 8% of operations exceeded thresholds in Q4 2025. The group decided against expanding the program to cover 11 PM–midnight, as most flights in that hour already use quieter aircraft and the change would triple monitored operations with little noise-reduction benefit. Additional updates covered a significant drop in propeller aircraft turns over Burien, progress on the Sound Insulation Program, and action items including a new 5–6 AM operations analysis and a multi-year trends chart.

H.R. 898, the Aviation Noise and Emissions Mitigation Act, is a bill introduced in January 2025 that would direct the EPA to establish a three-year pilot grant program for measuring aircraft and airport noise and emissions—including greenhouse gases, particulate matter, and ultrafine particles—in communities near airports and flight paths. Grant recipients would use advanced monitoring technology to produce neighborhood- and ZIP Code-level data, helping identify disproportionately impacted communities. The data collected would then be used to develop mitigation strategies in coordination with local health agencies, tribal governments, and community organizations.

H.R. 897, the Aviation-Impacted Communities Act, introduced in January 2025, would require the FAA to provide noise mitigation funding to communities affected by airport noise even if they fall outside the current 65 DNL sound level threshold. The bill would make these communities eligible for Airport Improvement Program grants, allow them to establish local community boards to address airport noise, and direct the National Academy of Sciences to conduct a comprehensive study of aviation impacts at major hub airports—including Seattle's King County—and their surrounding neighborhoods.