Charles Crocetti is a senior vice president and cofounder of Sanborn, Head & Associates, with more than 25 years of experience in hydrogeological, environmental, and remedial projects, in over 20 states and internationally. His particular expertise is the application of geochemistry to hydrogeological and environmental issues. Recent interests include assessment and control of impacts to groundwater due to blasting; emerging contaminant 1,4-dioxane; and geologic and geochemical influences on the success of geothermal/ground source heat pump systems. He earned a B.A. from Dartmouth College in earth sciences and an M.S. and doctorate in geological sciences from Harvard University.