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Charles A. Menzie, Ph.D.

Principal Scientist


Professional Profile

Dr. Menzie’s primary area of expertise is the environmental fate and effects of physical, biological, and chemical stressors on terrestrial and aquatic systems. This includes work on chemicals in the environment, oil and gas operations, fossil fuel and nuclear power plants, alternative energy projects, invasive species, and climate change impacts. Dr. Menzie has worked at more than 100 hazardous waste sites, including many high-profile Superfund Sites and NRDA-related cases. He has been called upon to evaluate environmental damage claims related to the use of pesticides, herbicides, and other chemicals. He has provided expertise related to the environmental implications of atmospheric emissions and of point and nonpoint sources of nutrients and toxic chemicals to aquatic and marine environments (through Total Maximum Daily Loads or TMDL programs). Dr. Menzie has worked on a broad range of contaminants, including solvents (TEC, PCE, TCA, and others), persistent chlorinated compounds such as PCBs, dioxins, and pesticides, as well as hydrocarbons including PAHs, cyanides, and metals such as lead, hexavalent chromium, mercury, and cadmium. Employing his deep understanding of risk-based studies and remediation, Dr. Menzie has directed the development of work plans, the implementation of remedial investigations, and the selection of remedial measures, on behalf of individual potentially responsible parties (PRPs), as well as PRP groups. Dr. Menzie has worked in all EPA Regions, including the Midwest and South (Regions 4, 5, and 6), the Northeast and East Coast (Regions 1, 2, and 3), and the West (Regions 8, 9, and 10). He has an active international practice including projects in Ecuador, Uruguay, and Yemen. He has extensive litigation experience and has provided steady and compelling advice and guidance in many controversial and contentious situations. He is the co-inventor of SediMiteTM, a low-impact method for remediating contaminated sediments.

Dr. Menzie is recognized as one of the leaders in the field of risk assessment and was awarded the Risk Practitioner Award by the Society for Risk Analysis and the Lifetime Achievement Award from the Association for the Environmental Health of Soils. He has served on the Councils of SRA and SETAC, the two major professional organizations in this field. Dr. Menzie has led numerous peer reviews for industry and for government. He has taken the lead in developing guidance documents for industry and government and has focused on methods that are workable and acceptable to a broad range of parties. He has developed and applied a formal causal-analysis methodology for assessing causation in cases of environmental impairment and contributions of chemical contamination. He was one of the committee members to draft the ASTM Standard for risk-based corrective action (RBCA) for chemical release sites and extended that standard to ecological considerations. He served on the National Research Council’s Committee on Bioavailability of Chemicals in Soils and Sediments. In addition to his work on chemical risk-related matters, Dr. Menzie has developed and applied methods for identifying third parties who have contributed to contamination in aquatic and terrestrial environments. These projects have involved meshing historical information with transport-and-fate analyses, risk considerations (remediation drivers), and forensic analyses. He has provided expert advice on historical use and disposal of asbestos products and historical assessments of asbestos in fill.

  • Ph.D., Biology, City University of New York, 1978
  • M.A., Biology, City College of New York, 1974
  • B.S., Biology, Manhattan College, 1971

    • OSHA Certified Eight-Hour HAZWOPER Annual Refresher Training in Hazardous Waste Operations and Emergency Response, updated annually
    • OSHA Certified 40-Hours of Training in Hazardous Waste Operations and Emergency Response

    • Adjunct Professor, University of Maryland at Baltimore County

    • U.S. Patent # 7,824,129: A Low-Impact Delivery System for In-Situ Treatment of Contaminated Sediment.