RSG, in cooperation with Northeast Wind, Inc. (NEWind) and Epsilon Associates, Inc. (Epsilon), is working with the Massachusetts Clean Energy Center (MassCEC) and the Department of Environmental Protection (MassDEP) to understand the special factors related to the prediction and measurement of wind turbine noise. The project team is working to develop a comprehensive data collection scheme involving overall sound levels, spectral sound levels, and amplitude modulation at multiple sites, concurrent with meteorological data. Once the data collection is concluded, the analysis will involve correlations of these various acoustical parameters with site and weather conditions. RSG will then translate this information into analyses to help inform MassCEC and MassDEP of the variance and sensitivity around certain parameters that could be used in their efforts to establish pre- and post-construction evaluation protocols and standards.