This October 2021 progress update presents findings from a Ground Noise Study conducted at Seattle-Tacoma International Airport (SEA). The presentation covers key acoustic concepts—including Maximum Sound Level (Lmax), Sound Exposure Level (SEL), and Equivalent Sound Level (Leq)—alongside topics such as sound propagation, the study's scope of work, noise monitoring activities, and planned next steps. The study aims to better understand and document ground-level noise impacts in and around the airport.

Notes

A progress update presentation on a ground noise study conducted at Seattle-Tacoma International Airport (SEA) in October 2021. The document covers acoustic terminology including sound measurement metrics, sound propagation principles, scope of work, noise monitoring procedures, and next steps for the ongoing study.

Sidebar On/Off

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...

V V

Notes

Message