SeaTac Permanent Noise Monitors with HAWKZ8 final approach

A map of the Seattle-Tacoma area showing numbered noise monitoring station locations (numbered 1, 15–23, 25, 28) clustered around Seattle-Tacoma International Airport (SeaTac) and extending south through Des Moines, Federal Way, and toward Milton/Fife. The stations appear to track aircraft noise corridors along what is likely the primary north-south flight path, with a dark vertical line indicating the runway centerline or flight track.
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