Keith Tolson has over 17 years of professional experience in environmental sciences. His practice focuses on application of risk-based principles to support legal and regulatory requirements. Dr. Tolson provides expert technical and strategic consultation on matters related to regulatory compliance and litigation. He also develops and supports public risk communication concerning the health effects of chemicals in air, water, soil, sediments, consumer products, and the workplace.

Practice Specialties
Dr. Tolson is nationally recognized for his expertise in the development of innovative risk-based approaches to address complex problems and relaying this information to stakeholders. He has broad experience in the application of RCRA and CERCLA guidance for reports submitted to the U.S. EPA and state regulatory agencies and has served as principal technical advocate for clients seeking to gain regulatory acceptance and site closure. He is skilled at using environmental forensic techniques and application of environmental statistics for cost-effective and scientifically defensible site assessment. He has provided mode-of-action evaluations and non-cancer and cancer toxicology assessments used to support risk-based remedial alternatives.

Advancing the State-of-the-Practice
Dr. Tolson serves as an adjunct professor at the University of Florida in the Center for Environmental and Human Toxicology. Dr. Tolson teaches graduate courses in statistics, toxicology and risk assessment. He has authored or coauthored over 100 technical publications in the field and serves as an editorial reviewer for several journals. Prior to joining Geosyntec, Dr. Tolson served for eight years as a consultant to the Florida Department of Environmental Protection, and is co-author of the Department’s technical guidance for Brownfields, Drycleaning, Petroleum, and Soil & Groundwater Cleanup Target Rules. Dr. Tolson was appointed by Florida Governor Charlie Crist to serve as toxicologist (2007-2011) for the Department of Agriculture and Consumer Services Pesticide Review Council which is charged with advising the Governor on issues related to the sale, use, and registration of pesticides in the State.. He has been active at the state and national level with the development of environmental statistics and toxicological evaluations of recalcitrant environmental contaminants including chlorinated solvents (e.g. TCE, 1,4 dioxane), metals (e.g. lead, chromium, mercury), dioxins, PCBs, pesticides, and PAHs.