NEM is an acronym used in Part 150 planning. What does NEM stand for?

• A. Noise Exposure Map
• B. National Emissions Model
• C. New Emission Map
• D. Noise Evaluation Metric

Answer: (A)

Noise Exposure Map is the term used in Part 150 planning. It’s the map that shows how surrounding areas are exposed to aircraft noise, usually using contours of equal Day-Night Average Sound Level (DNL). This map establishes the baseline noise environment around the airport and projects future exposure under different scenarios, such as new flight procedures or mitigation measures. It helps determine where land use planning or mitigation is needed and allows comparison of how proposed changes would increase or reduce noise exposure.

The other options refer to emissions topics or generic metrics rather than the specific planning tool used in Part 150. National Emissions Model or New Emission Map would be related to emissions rather than noise mapping, and Noise Evaluation Metric is not the standard term for the planning document itself.