Dr. Tyndall is a board-certified toxicologist with over 30 years of experience, specializing in the areas of toxicology, risk assessment, risk management, and development of risk-based cleanup levels. She has worked in both the environmental consulting and government sectors, has extensive experience evaluating potential human health risks associated with potential exposure to contaminants in environmental media (air, water, soil, sediment, and biota), and has helped clients navigate various state and federal remediation programs to limit liability and close contaminated sites. Dr. Tyndall has successfully proposed/used realistic and reasonable exposure scenarios at numerous sites, which resulted in a no further action designation or significantly reduced the scope of the recommended remedial actions.

Dr. Tyndall has a deep understanding of both human health as well as ecological risk assessment practices and has managed and conducted complex risk assessments for numerous Superfund and other non-NPL sites. Dr. Tyndall has experience evaluating various exposure scenarios, including those occurring in the workplace, those that might be associated with a proposed industry (e.g., surface coal mine), or those associated with a release, spill, or leak in an industrial setting. She has evaluated the toxicity of numerous chemicals of concern, including metals (e.g., mercury, arsenic, and lead); PAHs; nitrate, coal dust and dust suppressant compounds; propylene; ozone; particulate matter; ethylene glycol, volatile organic compounds (e.g., benzene and xylene); hydrocarbons, PFAS, and other organic compounds in soil, surface water, sediment, groundwater, and/or biota such as plants, livestock, wild game, and fish. Dr. Tyndall has evaluated epidemiological data for many chemicals as it relates to and supports toxicological evaluations, associated risk assessments, and the development of regulatory toxicity criteria.

Dr. Tyndall is well respected among her professional peers, regularly presents at scientific meetings, has taught classes/courses at several universities, and is an effective communicator in technical and/or public settings. She has served on a number of technical workgroups and advisory committees related to mercury and other compounds, remediation programs, and other environmental regulations and/or guidance document development. She also has significant experience communicating toxicology and environmental exposure/risk issues to the public, media, regulators, and different stakeholders, and providing expert testimony in a variety of public, legislative, legal,’ and administrative settings.