William (Bill) Rish, Ph.D.
Principal Engineer


Phone(828) 348-1111
Address31 College Place
Suite B118
Asheville, NC 28801




Professional Profile

Dr. William (Bill) Rish has more than 40 years’ experience in exposure assessment, risk assessment, site assessment and remediation, and probabilistic uncertainty analysis. He has prepared hundreds of risk assessments and managed numerous large, complex site investigations and remediation projects, and has been active for many years in the development of federal and state rules, guidance, and policy regarding risk assessment. Dr. Rish was a pioneer in the development of probabilistic methods for evaluating uncertainty in estimating chemical and radiological human health risk from environmental impacts.

Dr. Rish has worked across the nation on sites subject to CERCLA, RCRA Corrective Action and Closure, and state orders and voluntary action. He also has worked on Department of Energy and Department of Defense projects. In addition, he has a strong background in systems failure and accident analysis, including chemical and nuclear systems. He provides consulting and workshops to regulators, attorneys, and industry on communicating environmental risk to the public.

Dr. Rish has experience with the Toxic Substances Control Act (TSCA), including Section 6 experience preparing existing high-priority chemical risk evaluations, conditions-of-use development, life-cycle exposure assessment, and hazard assessment. He also has TSCA Section 5 experience with Premanufacture Notification (PMN) submittals, new chemical safety assessment and prioritization, and obtaining CAS designations.

Dr. Rish actively participates in working groups and committees. He was past chairman of the Health Risk Subcommittee of the Marcellus Shale Coalition, was a member of the Induced Seismicity Workgroup of state oil and gas regulators and co-author of their primer for state regulators, is a regular invited member of the Ohio EPA workgroup on human and ecological risk assessment procedures, and is a Steering Committee member for the Society of Environmental Toxicology and Chemistry (SETAC) human health risk assessment group.