City of Eagan (Near Minneapolis) commissioned a study of existing and future noise levels. The goal was to analyze the future noise impact of Runway 17/35 on the City of Eagan, using the Integrated Noise Model (INM) input data from the MSP Part 150 noise study. Fifty noise modeling "grid points" were identified by City officials. A detailed analysis of noise exposure at these locations was conducted using the Day-Night Average Sound Level (DNL) metric, supplemented by metrics that focus on the noise impact of individual aircraft overflight events. To help the City of Eagan and the community better understand the expected future noise environment, in advance of the runway opening, the number and duration of aircraft operations that exceed a range of selected sound level thresholds at the fifty grid points was modeled.
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