Exhibit G-1: Future (2021) NEM/NCP Noise Exposure Contour

This map, prepared by Landrum & Brown on January 22, 2013 as part of the 14 CFR Part 150 Study for Seattle-Tacoma International Airport, shows projected future (2021) noise exposure contours around Sea-Tac Airport at DNL 65, 70, and 75 dBA levels. The contours extend across surrounding communities including SeaTac, Burien, Des Moines, Tukwila, and portions of Renton and Kent, with sensitive land uses such as schools, churches, hospitals, and residential areas identified within the noise impact zones. The study was conducted to inform noise compatibility planning and policy decisions aimed at reducing aviation noise impacts on affected neighborhoods.

Notes

Exhibit G-1 from the Seattle-Tacoma International Airport 14 CFR Part 150 Study, prepared by Landrum & Brown on January 22, 2013. Shows the Future (2021) NEM/NCP (Noise Exposure Map/Noise Compatibility Program) noise exposure contours at DNL 65 dBA, DNL 70 dBA, and DNL 75 dBA overlaid on existing land use for the Sea-Tac Airport study area. Map covers municipalities including Seattle, Burien, SeaTac, Tukwila, Des Moines, Renton, Normandy Park, and King County. Land use categories shown include single-family residential, two-family residential, multi-family residential, agriculture/open space, park/recreation, institutional, commercial/industrial, and mobile home park. Sensitive receptors marked include schools, churches, hospitals, nursing homes, and libraries. Contour file reference: SEA213xQSv2.

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