Michael J. Deible, Ph.D.

Dr. Michael J. Deible, a principal investigator at RJ Lee Group, is a leader in the field of chemistry consulting with a deep focus on Per- and Polyfluoroalkyl Substances (PFAS). Dr. Deible's expertise spans the domains of physical chemistry, materials science, analytical methods and environmental degradation.

As PFAS Team Lead at RJ Lee Group, Dr. Deible manages the laboratory that runs both standard and non-standard testing methods for PFAS analysis. His experience detecting and quantifying PFAS in all types of samples, evaluating impact on environmental contamination, advising on approaches to remediation, and analyzing capture and destruction technologies positions him as a fully-rounded authority in the field. He oversaw the establishment of the PFAS practice at RJ Lee Group, including instrumentation analysis, purchase and calibration, achieving accreditation and sourcing first clients.

Dr. Deible serves as a member of the American Society of Testing and Methods in multiple capacities, including as technical lead on the establishment of standard methods for quantifying PFAS in consumer products and serving as Vice Chair of Subcommittee D19.06, focused on the study of organic substances in water. As a consulting expert, clients rely on his insights into the analysis of test results, supply chain investigations and the operational dynamics of facilities and production.

Beyond PFAS-specific responsibilities, Dr. Deible's contributions extend to materials identification, failure analysis, patent infringement and method development. He has published research in multiple peer-reviewed journals and served as a testifying expert in litigation.

Dr. Deible holds a Ph.D. in Physical Chemistry and previously served as Assistant Professor at the US Military Academy at West Point.