Stephen Dyment, Technology Innovation and Field Services Division, Office of Superfund Remediation and Technology Innovation, EPA
Mr. Dyment is a chemist with more than 15 years experience including 4 years in a commercial analytical laboratory and 8 years in environmental consulting. He joined EPA in 2005 with a focus towards enhancing acceptance and use of emerging analytical technologies and sampling strategies. His perspective draws upon years of practical laboratory and field experience to apply EPA's Triad approach at sites in Superfund, Brownfields, Resource Conservation and Recovery Act (RCRA), underground storage tanks, and state programs. Mr. Dyment's efforts have resulted in the development of numerous EPA case studies, profiles, and training courses that outline successful strategies for the use and understanding of collaborative data sets, adaptive quality control programs, and real time analytics. He holds a B.S. in Environmental Science/Toxicology from the University of Massachusetts at Amherst.

Robert A. Howe, Tetra Tech EM Inc.
Mr. Howe has 25 years of experience in environmental sciences and 20 years of experience in implementation of environmental restoration projects. Mr. Howe is one of Tetra Tech's technical leads in support of EPA OSTRI's technical support centers. Under three contracts with EPA Headquarters OSTRI, he has developed extensive training materials and supported projects nationwide. At various levels in management, Mr. Howe has played a major role in cleanup and closure at several hundred hazardous waste sites ranging in size from small brownfields sites to some of the largest Superfund and brownfields property developments in the U.S.

Dr. Tom Purucker, Ecosystems Research Division, National Exposure Research Laboratory, Office of Research and Development, EPA
Dr. received his PhD in Ecology and Evolutionary Biology in 2006 from the University of Tennessee. He is a post-doctoral ecologist for the EPA in the Ecosystems Research Division of the National Exposure Research Laboratory in Athens, Georgia and also is an adjunct faculty member at Gainesville State College. Particular areas of interest include spatial statistical applications to environmental contamination problems, exposure assessment development, fate and transport of contaminants, ecological population models, and applications of uncertainty analysis to these areas in a decision-making context.