Tracy Greene, DABT, has more than 25 years of experience in the risk assessment industry. Her background includes work in all aspects of risk assessment including human health, ecological and carcinogenic risk assessment. Tracy has performed toxicological reviews and literature research including an investigation to identify the pharmacokinetic factors that may be used quantitatively to assess intraindividual variability across life stages (infant, child, adult, and elderly) and between genders. She has performed numerous quantitative dose response analysis utilizing the USEPA’s cancer and noncancer methodologies, and developed No Significant Risk Levels (NSRLs) and Maximum Allowable Dose Levels (MADLs) for various compounds using the methodology of California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment (OEHHA). She served as a technical reviewer and author for the development of toxicological data evaluation reviews (TDERs), including subchronic toxicity and reproductive/developmental studies, conducted with potential food additives for the FDA, Center for Food Safety and Nutrition, Office of Premarket Approval. She has also participated in the development of IRIS profiles and support documentation for several chemicals, which included the summarization of numerous toxicokinetic, animal toxicity, genotoxicity, and epidemiological studies.