Greg Garvey is a public health toxicologist with more than 25 years of experience evaluating exposures to chemicals in relation to both human and ecological adverse effects. His experience includes human and ecological risk assessment, toxicology, vapor intrusion, anthropogenic and natural background evaluations, environmental site assessment, and field studies. He has conducted screening level and baseline risk assessments, both deterministic and probabilistic, in support of remedial investigations and feasibility studies throughout the United States and internationally. On behalf of clients, he reviews and provides context for regulatory developments associated with standard and emerging contaminants, such as per- and polyfluoroalkyl substances (PFAS) and 1,4-dioxane.