Appendix H Official Noise Exposure Maps

This document presents the official Noise Exposure Maps (NEMs) for Seattle-Tacoma International Airport (SEA), developed as part of the FAA Part 150 noise study. It includes maps showing 2022 existing noise conditions and projected 2032 future conditions, along with the flight tracks used in the Aviation Environmental Design Tool (AEDT) modeling for both north and south flow operations. The maps illustrate the geographic extent of aircraft noise impacts across surrounding communities, including Seattle, Burien, SeaTac, Tukwila, and Des Moines.

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Appendix H of the Seattle-Tacoma International Airport (SEA) Part 150 Study containing official Noise Exposure Maps (NEMs) for 2022 Existing Conditions and 2032 Future Conditions, developed using the Aviation Environmental Design Tool (AEDT). Includes AEDT flight tracks with backbone and subtracks depicting arrival and departure dispersion at Sea-Tac Airport. Sub-appendices cover H-1 (2022 Existing Conditions NEM), H-2 (2032 Future Conditions NEM), H-3 (North Flow Model Flight Tracks), and H-4 (South Flow Model Flight Tracks). Map signed by Sarah Cox, Director of Aviation Environment & Sustainability, Port of Seattle, dated 06/29/26, covering communities including Burien, SeaTac, Normandy Park, Des Moines, Federal Way, Tukwila, Renton, and King County.

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