NEF contours and the City of Leduc

Developed using a Transport Canada model, NEF contours don’t measure decibel levels of individual flights. Instead, it’s a cumulative noise value of overall forecasted flights and noise annoyance that takes into account loudness, frequency, duration and time of occurrence.  

Lines are drawn on a map connecting points of equal noise impact representing 25, 30, 35, and 40 NEF contours. Transport Canada advises that an NEF level greater than 30 is likely to produce some level of annoyance and that above 35, complaints will likely be more numerous. 

According to the Edmonton International Airport Noise Advisory Committee, the airport received a total of 41 noise complaints that were attributed to aircrafts arriving/departing between January and November 2020. Of those, two were generated from within the City of Leduc. In all of 2019, the airport received 264 noise complaints, four of which came from within Leduc. 

To become more familiar with the NEF contours in the City of Leduc, as outlined in AVPA regulations, please review the map provided below. Overall, it is estimated that the contours cover roughly 80 per cent of our community.