As part of quarry operations proposed at Okemo Mountain in Ludlow, Vermont, Epsilon modeled expected ore truck movements on area roads. Background noise data and concurrent traffic counts were obtained to calibrate the TNM computer noise model, and establish background levels for evaluating future noise impacts. Epsilon then modeled proposed future truck operations for trucks servicing the proposed quarry. The noise level results were then added to the noise expected from the quarry operations to determine overall quarry operational impacts. The results showed that no noise impacts from combined proposed quarry operations would occur.

A site on Martha's Vineyard was studied to determine the feasibility of noise barrier construction at a location where traffic noise was considered a problem. Using noise measurements and concurrently collected traffic counts of various types of vehicles on the adjoining roads, a computer noise model of the existing site was constructed using the FHWA's TNM traffic noise model. The model incorporated highway vehicle types, volumes, and speeds, ground terrain elevations, and tree zones to accurately reproduce existing measured sound conditions. This model was then used to predict expected noise levels at the study location for ten possible barrier designs of various heights and layouts. A preferred noise barrier fence design was recommended to the client which optimized both acoustic and visual considerations at this location.

Epsilon conducted a noise analysis at a proposed new road for the redevelopment of the former South Weymouth Naval Air Station in Weymouth, MA. Noise level measurements and concurrent traffic counts were collected at locations near the proposed highway alignment. Using these data, and CAD drawings of the project area supplied by the client, Epsilon constructed a TNM computer noise model of the project area and proposed new road. The model was then run for future conditions expected in the year 2019, using noise data supplied by MassHighway to predict future noise levels from the proposed alignment.