Peter Salpas is the principal of Salpas Consulting in Oak Ridge, Tennessee. He received a Ph.D. in geochemistry from Washington University in St. Louis in 1985 and conducted two years of post-doctoral research at the University of Tennessee. He was a professor in the Department of Geology at Auburn University from 1986 through 1993 and was granted tenure in 1992. At Auburn he taught undergraduate and graduate geology courses, directed graduate student theses, and conducted research funded by the National Science Foundation and the National Aeronautics and Space Administration. Dr. Salpas entered the environmental consulting field with Science Applications International Corporation (SAIC) in 1993 and founded Salpas Consulting in 2003. At SAIC, Dr. Salpas was a project manager and lead scientist for Resource Conservation and Recover Act Facility Investigations at the Paducah Gaseous Diffusion Plant (PGDP) and Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Remedial Investigations, Technology Demonstrations, and Treatability Studies at the Oak Ridge Reservation (ORR) East Tennessee Technology Park and Bear Creek Valley and at PGDP. From 1999 to 2002 Dr. Salpas was the Chief Scientist for SAIC's Remedial Action Assessment contract at PGDP. In 2002, Dr. Salpas began co-developing the Dynamic Verification Strategy (DVS) for CERCLA soil characterization at the ORR East Tennessee Technology Park and completed that work with Salpas Consulting. Beginning in 2005 he and his DVS co-developer redesigned the DVS into the Dynamic Characterization Strategy (DCS) for CERCLA soil characterization at the ORR Bethel Valley and Upper East Fork Poplar Creek watersheds. Since 2003 he has co-written three DVS/DCS Remedial Action Work Plans and associated sample planning documents and written over 40 Technical Memoranda that describe DVS/DCS characterization activities, present analytical data, and evaluate and interpret the data in terms of risk-based evaluation criteria.