Steve Roberts is Professor and Director of the Center for Environmental and Human Toxicology at the University of Florida in Gainesville, Florida.  He has held university faculty appointments in health professions for over 30 years and currently teaches principles of toxicology to graduate and medical students.  He has authored more than 100 papers and book chapters on the toxic effects of drugs and chemicals.  In addition to teaching and research, Steve leads at team that provides technical support to regulatory agencies at the national, state, and local level regarding risk assessment of environmental contaminants.  He has developed regulatory guidance for risk-based cleanups and participated in the risk evaluation for nearly every major contaminated site in the state of Florida over the last 15 years.  He has been appointed to several federal advisory committees and currently serves on the Chartered Science Advisory Board of the U.S. EPA.  Steve has been a member of the ITRC ISM team since 2009 and was a member of the Statistics Workgroup. Steve earned a bachelor’s degree in pharmacy from Oregon State University in Corvallis, Oregon in 1973 and a Ph.D. in pharmacology from the University of Utah College of Medicine in Salt Lake City, Utah in 1977.