TagSea-Tac Airport(2023)

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.

A Port of Seattle presentation slide dated February 26, 2025, providing an update on the Sound Insulation Repair and Replacement Pilot Program. The slide features a photograph of a residential home at address 12036, illustrating a property subject to the airport noise insulation program near Sea-Tac Airport.

Slide 13 of a presentation titled 'Acoustic Testing Overview and Results' shows two field photographs: an exterior loudspeaker on a tripod set up in front of a residential house, and an interior shot of a technician using a measurement microphone on a pole inside a kitchen. The setup depicts standard residential sound transmission testing methodology.

A presentation slide titled 'Next Steps' listing two bullet points: 'Implementation Workshops' and 'Design/Construction Phase.' The slide is numbered 17 and uses a teal/blue color scheme with a green and blue wave graphic at the bottom, consistent with a planning or project-status presentation.

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.

A presentation slide states that third-party consultants conducted field assessment and acoustic testing concurrently at 30 homes over a two-week period beginning August 19, 2024. The 30 homes were selected to reflect the distribution of manufacturers by year for sound insulation packages installed between 1986 and 2014.

Slide 8 from a Port of Seattle / ESA 2024 report presents two tables summarizing 1,067 survey responses about sound insulation packages installed at Sea-Tac Airport. The left table compares response distribution by manufacturer (e.g., Alpine STC44 leading at 21.1%), while the right table breaks down installations by year, with Pre-1993 representing the largest share at 21.4% of survey responses, out of a total program baseline of 3,200 packages.

Official meeting agenda for the SEA Stakeholder Advisory Round Table (StART), scheduled February 26, 2025, 5:00–7:00 PM via Zoom. Key agenda items include a Presentation/Q&A on the Sound Insulation Repair and Replacement Pilot Program Assessment led by Ryan McMullan (Noise Programs Senior Manager, POS), an update on StART's February 12 Olympia Day on the Hill, Aviation Noise Working Group Activities, and a Sustainable Airport Master Plan Update; the tentative next meeting is April 23, 2025.

Slide 7 from a Sea-Tac Airport presentation titled 'Survey Overview and Results (cont.)' showing a geographic map of properties around Seattle-Tacoma International Airport color-coded by sound mitigation contractor (Other, Milgard, Alpine, CDI/Peerless/Devac). The map is dated September 2022 and includes a note directing homeowners to contact the Noise Programs office at 206-787-5393 to determine eligibility for sound mitigation programs.

Official agenda for the SEA Stakeholder Advisory Round Table (StART) meeting scheduled February 26, 2025, 5:00–7:00 PM via Zoom. The meeting covers a report on the Sound Insulation Repair and Replacement Pilot Program assessment and a recap of StART's February 12 Olympia Day on the Hill, with leads including Ryan McMullan (Noise Programs Senior Manager, Port of Seattle) and facilitator Andrés Mantilla of Uncommon Bridges.