This document presents the kickoff discussion for a Ground Noise Study at Seattle-Tacoma International Airport (SEA), delivered to the StART (Sea-Tac Airport Roundtable) on October 23, 2019 by Brad Nicholas of HMMH. The presentation covers foundational topics including acoustical terminology such as maximum sound levels, sound exposure levels, and equivalent sound levels, as well as how aircraft noise affects human activity and how sound travels. It also outlines the scope of the ground noise study, identifies ground noise sources, and discusses plans for noise monitoring.Open full document
Notes
A kickoff presentation by Brad Nicholas of HMMH to the StART (Sea-Tac Airport Roundtable) introducing the SEA Ground Noise Study. The presentation covers acoustical terminology, aircraft noise effects on human activity, sound propagation, ground noise study scope, ground noise sources, and noise monitoring discussion. Key metrics discussed include Maximum A-weighted Sound Level (Lmax), Sound Exposure Level (SEL), and Equivalent Sound Level (Leq).