Predicting future sound levels and the associated impacts typically begins with monitoring of existing levels, then applying computer modeling techniques to develop estimated levels of project noise.

For example, a noise study for a "big box" retail project might include predicted levels of traffic noise in the approaches and parking lot, noise of delivery trucks and unloading operations, noise of mechanical equipment associated with the project (e.g. HVAC, refrigeration, compactors), and interior sound levels based on non-project-related noise (e.g. aircraft overflights).

Predicted noise levels are then evaluated with respect to allowable standards and/or existing conditions & acceptable impacts. If warranted, noise mitigation measures are developed to ensure that appropriate sound levels from all project sources and relevant non-project sources are achieved.

Click on the following subjects to learn more about environmental noise and how it can be controlled.

Noise Descriptors | Noise Studies and Limits | Environmental Noise Guidelines | Measurements and Predictions | Putting It Together