Pages from June 10, 2024 Aviation Noise Working Group Part 150 Study Technical Review Committee Meeting #1_0001

Slide 23 from a Port of Seattle presentation on aircraft noise at Seattle-Tacoma International Airport, explaining key noise metrics including Single Event Sound Level (SEL), Hourly LEQ, and Day-Night Level (DNL). The right panel illustrates that identical DNL 65 levels can result from 1 event/day at SEL 114.4 dBA, 10 events/day at SEL 104.4 dBA, or 100 events/day at SEL 94.4 dBA.
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