TagNoise Remedy Program(52)
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2025-09-12Acoustical Testing Results for SIRRPP — September 2025
In August 2025, acoustical engineering firm HMMH measured indoor noise levels at 31 homes near Seattle-Tacoma International Airport to assess eligibility for the airport's Sound Insulation Repair and Replacement Program. Testing found that only one of the 31 homes met the FAA's minimum threshold of 45 decibels interior Day-Night Average Sound Level required to qualify for full sound insulation treatment, while seven additional homes had at least one room exceeding that level. The study used FAA-approved methods, including a Boeing 737-800 aircraft noise spectrum, to calculate how much airport noise penetrates each habitable room with windows closed. -
2025-09-12
Acoustical Testing Results for SEA Repair and Replacement Program
Technical memorandum from Harris Miller Miller & Hanson Inc. (HMMH), authored by Eric Cox, to Julie Kinzie at Sea-Tac Airport (SEA), reporting acoustical testing results for the SEA Repair and Replacement Program conducted in August 2025. Covers median interior Day-Night Average Sound Level (DNL) measurements for 31 residential structures in SeaTac, Burien, and Des Moines -
2025-07-16Acoustical Testing Results for SIRRPP — July 2025
Harris Miller Miller & Hanson Inc. (HMMH) conducted sound insulation measurements at 30 homes near Seattle-Tacoma International Airport in June 2025 to determine whether interior noise levels meet the federal threshold for sound insulation assistance. Using FAA-approved testing methods, the study found that only 3 of the 30 homes had median interior Day-Night Average Sound Levels (DNL) at or above the qualifying 45 dB threshold, while an additional 3 homes had individual rooms exceeding that level. The results inform eligibility decisions under the SEA Repair and Replacement Program, which is governed by FAA Advisory Circular 150/5000-9B and the Airport Improvement Program Handbook. -
2025-07-16
Acoustical Testing Results for SEA Repair and Replacement Program
Technical memorandum from Harris Miller Miller & Hanson Inc. (HMMH), authored by Eric Cox and addressed to Julie Kinzie, reporting acoustical testing results for the Seattle-Tacoma International Airport (SEA) Repair and Replacement Program conducted in June 2025. HMMH measured median interior Day-Night Average Sound Level (DNL) values for 30 residential structures in SeaTac and Des -
2025-02-26StART SIRRPP Update — Acoustic Testing Procedures and DNL Metrics — Slide 12 (February 26, 2025)
This slide from a Seattle-Tacoma International Airport (SEA) noise remedy presentation summarizes acoustic testing procedures, stating that testing followed the FAA-approved 2017 Acoustic Testing Plan (ATP). Key metrics cited include a 70dB DNL exterior noise contour threshold within the 2014 SEA Noise Remedy Boundary and a 27dB Noise Level Reduction (NLR) example calculated from interior and façade measurements. -
2025-02-26StART SIRRPP Survey Overview and Results — Slide 4 (February 26, 2025)
Slide 4 from a Sea-Tac Airport (SEA) presentation titled 'Survey Overview and Results,' describing a noise insulation pilot survey designed to meet Order 2024-04, conducted within the 2014 SEA Noise Remedy Boundary. Outreach included mailings to approximately 3,200 single-family homes, a Port website page, Part 150 Study public meetings in June, StART Aviation Noise Working Group updates, and a Highline Forum meeting update. -
2024-02-13Order 2024-04: Sound Insulation Repair and Replacement Pilot Program
In February 2024, the Port of Seattle Commission proposed Order 2024-04, directing an assessment of previously installed noise insulation packages to be completed by end of 2024, with findings reported to Commissioners by January 21, 2025. The order also establishes a Sound Insulation Repair and Replacement Pilot Program, backed by an initial $5 million commitment, to identify and fix aging or ineffective insulation in homes near Seattle-Tacoma International Airport. Priority for repairs will be determined using the Port's equity index to ensure underserved communities are considered first. -
2023-05-09Second Chance Initiative Application Form (SC-1): San Francisco International Airport Residential Sound Insulation Program
The San Francisco International Airport (SFO) Second Chance Noise Insulation Initiative offers free acoustical improvements to eligible residential property owners who previously declined or did not respond to earlier phases of the Noise Insulation Program. To qualify, properties must fall within the 65-decibel CNEL noise contour, have been built before October 1, 1998, and owners must agree to grant a perpetual avigation easement to SFO and the City and County of San Francisco. Eligible improvements may include window and door replacement, caulking, weather-stripping, and central fresh air ventilation installation. -
Port Of Seattle Noise Remedy Program — Hand-Drawn Floor Plan for Single-Family Residence
A hand-drawn floor plan sketch produced under the Port of Seattle Noise Remedy Program, showing a single-family residence with labeled rooms including a garage (N/C), kitchen, dining room, living room, utility room, bathroom, and four bedrooms (BR1–BR4, with BR3 and BR4 noted as 'slant' roof areas). Numbered triangular symbols throughout the plan indicate window or door treatment locations; the address and drawn-by fields are redacted. -
Port Of Seattle Noise Remedy Program Floor Plan Sketch (No. S-8283)
A hand-drawn floor plan sketch (No. S-8283, Sheet 1 of 1) produced under the Port of Seattle Noise Remedy Program. The residence contains four bedrooms (BR1–BR4, with BR3 and BR4 noted as 'slant' ceiling), a living room, dining room, kitchen, utility room, bathroom, closet, fireplace, and an attached garage marked 'N/C' (not conditioned); numbered triangular symbols indicate window/door treatment locations.