This December 2019 report by ESA for the Port of Seattle analyzes two standard Noise Abatement Departure Profiles (NADPs) used at Seattle-Tacoma International Airport: the Close-in profile, which reduces noise near the runway end, and the Distant profile, which reduces noise farther along the departure path. The analysis finds that the Distant NADP provides the greatest noise relief to the residential and developed communities surrounding Sea-Tac Airport. The report includes background on departure profiles, noise analysis results, and recommendations for the airport's noise abatement policy.Open full document
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A presentation prepared by ESA for the Port of Seattle analyzing Noise Abatement Departure Profiles (NADPs) at Seattle-Tacoma International Airport. The analysis compares Close-in and Distant departure profiles, concluding that the Distant NADP provides the most noise reduction benefits for developed areas in the SEA environs. The presentation was delivered to StART members on December 11, 2019.