Ms. Lisa Tolbert is a consultant with more than 10 years of broad technical experience in the fields of environmental health science and toxicology, risk assessment, remedial site investigation and characterization, regulatory compliance, and engineering. As an environmental health scientist, she has executed human health risk assessments for cancer and noncancer health endpoints from exposures to numerous environmental chemicals in multiple media, and provided toxicological, regulatory, and data analysis support for private clients and public agencies for contaminated sites throughout the U.S. As a chemical/environmental engineer, she has provided engineering support during the research, development, design, implementation, closeout, and documentation stages of environmental remediation and construction projects. Ms. Tolbert has contributed to a wide variety of projects, including those involving deterministic and probabilistic (i.e., Monte Carlo) human health and ecological risk assessment, development of screening and cleanup levels, and soil and groundwater remediation. Other projects have involved excavation, dredging, vapor intrusion, post-application pesticide volatilization, leaking underground storage tanks (USTs), landfills, stormwater monitoring, the State of California’s Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65), and sampling of ambient air, groundwater, soil, soil vapor, and sediment in support of site evaluation activities. She has experience primarily working on sites contaminated with petroleum hydrocarbons, chlorinated solvents, arsenic, lead, PCBs, pesticides, and dioxins and furans. In addition, Ms. Tolbert has experience evaluating sites with contaminants of emerging concern, such as perfluoroalkyl substances (PFAS).