Interactive map showing Sea-Tac Airport noise contours, including the 1991 and 2018 DNL 65 boundaries, noise remedy properties (9,179 inside 1991 boundary; 2,454 inside 2018 boundary), and 24 permanent noise monitors. Three monitors are labeled on the map: Monitor 15 (Sylvester Middle School, high penalty event ratio), Monitor 14 (North Clear Zone, high), and Monitor 16 (Chinook Middle School, low), with the monitor legend indicating penalty events occur 10PM–7AM and Fly Quiet events 12AM–5AM.Open full document
Notes
Interactive map showing Sea-Tac Airport noise contours, including the 1991 and 2018 DNL 65 boundaries, noise remedy properties (9,179 inside 1991 boundary; 2,454 inside 2018 boundary), and 24 permanent noise monitors. Three monitors are labeled on the map: Monitor 15 (Sylvester Middle School, high penalty event ratio), Monitor 14 (North Clear Zone, high), and Monitor 16 (Chinook Middle School, low), with the monitor legend indicating penalty events occur 10PM–7AM and Fly Quiet events 12AM–5AM.