Dimitri Vlassopoulos has been a geochemist with S.S. Papadopulos and Associates in Bethesda, Maryland for 10 years, where he conducts and supervises applied research in contaminant hydrology and in-situ groundwater remediation technologies. His areas of expertise include analysis of the environmental fate and transport of contaminants under natural and engineered conditions, development and application of computer simulation models, and environmental forensic techniques. He received a Ph.D. in environmental geochemistry from the University of Virginia (2000), an MS in Geochemistry from the California Institute of Technology (1993), and an MS in Geological Sciences (1989) from McGill University.