A predictive noise study regarding the proposed Cincinnati Muncipal Airport expansion

A noise study was performed on the landing path of runway 21L of Cincinnati Municipal Airport to determine the effect of the runway expansion project set to begin in 2005. Sound pressure levels were acquired along the landing path branches to evaluate the eight-hour Leq and the test data were compared to those predicted by the Integrated Noise Model (INM) software. The test data line up to the modeled results within 3.5 dB, an amount that can be explained by weather patterns and other environmental noise variables. The model shows that the 65 dB Day/Night Level (DNL) contour area could negatively affect 46 residents near the airport. Suggestions for the expansion plans include a detailed review of all relevant noise issues using an appropriate computer model.