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Fionna S. Mowat, Ph.D.

Principal Scientist

Exposure Assessment & Dose Reconstruction

Professional Profile


Dr. Mowat is a risk assessment practitioner who specializes in exposure assessment. She has 10 years of multidisciplinary experience in the fields of ecological and human health risk assessment, primarily focusing on exposure. Dr. Mowat has conducted human health risk assessments for various chemicals, including asbestos, hexavalent chromium, and manganese. Currently, her primary areas of interest are exposure assessment from various chemicals, mineral fibers, and nanoparticles in occupational settings, and evaluating potential exposures resulting from use (and misuse) of consumer products (e.g., mastics/adhesives, phenolic compounds, friction products, jewelry, roofing materials, gaskets, and children’s toys). In particular, Dr. Mowat has been involved in the design, conduct, and publication of exposure simulation tests designed to simulate historical exposures to products that were manufactured and used during a time when no air samples were collected and industrial hygiene data were unavailable. Dr. Mowat also has experience with chemical and toxicological characterizations of sediment mixtures bioavailability analysis of metals, and interpretation of bioassays. Dr. Mowat is also trained in biomedical engineering.

Prior to joining Exponent, Dr. Mowat was a toxicologist and senior ecological risk assessor at Tetra Tech EM Inc. She was the technical lead for five major screening-level and baseline ecological risk assessments at Naval bases in the Bay Area and southern California. She was the deputy installation coordinator for an active naval base in southern California, and the project manager for an inactive naval shipyard and former communications facility in the Bay Area. As part of this work, Dr. Mowat coordinated all activities at the site, including management of facility-wide investigations sampling and analysis, risk assessment efforts, and Navy program management support.

  • Ph.D., Biomedical Engineering, Tulane University, 2000
  • B.S.E., Biomedical Engineering, Duke University, 1994

    • Engineer-in-Training (EIT) certification, 1996
    • SCUBA certification, PADI, 1988

  • French
  • Spanish