Award winning toxicologist and scientist. 10+ years’ experience as a toxicologist employed by the Environmental Protection Agency (EPA). Served as EPA’s senior toxicologist in the waste management division working on risk and soil cleanup. Expertise in toxicology, risk assessment, mathematical modeling, statistics, neuroscience, and environmental/ecological health issues. Extensive national and international public speaking experience. 15+ years teaching experience. Well published, including author of textbook on toxicology and environmental risk assessment. Experienced expert witness on issues including environmental risk, drug and alcohol cases, DUI, accidental poisoning, and intellectual property. 10+ years consulting experience. Special interest and expertise in dioxin-like chemicals and polychlorinated biphenyls (PCBs).