Our initial UTRC research project identified routes and road segments with predicted high volumes of truck traffic related to natural gas extraction in the Marcellus Shale region. Results also generated annual estimates of pollution emissions per route and road segment related to these transportation activities. The road segment results identified areas of potentially elevated pollution emissions due to incremental truck traffic resulting from natural gas development. The current UTRC project uses these "hot spot" data as source inputs for the AERMOD pollution dispersion model to begin the assessment of potential health impacts on local populations due to increased truck traffic.