Dr. Dallas Cowan is a board-certified toxicologist (DABT) and Certified Industrial Hygienist (CIH) with consulting experience in occupational toxicology, industrial hygiene, exposure and human health risk assessment. Dr. Cowan completed his PhD in Toxicology at Purdue University, where his principal research focus involved biomarkers of manganese (Mn) exposure and early-onset manganism in Chinese smelting workers. Dr. Cowan completed his MS in industrial hygiene at San Diego State University in 2005 where his research investigated the effect of anthropometric facial characteristics on the efficacy of disposable dust masks.

Dr. Cowan’s industrial hygiene and safety experience includes a variety of exposure assessment techniques, qualitative and quantitative fit testing for respiratory protection programs, development of safety bulletins, preparing and conducting safety briefings regarding permit required confined space entry, fall protection, respiratory protection, and personal protective equipment. He has been involved in several air sampling campaigns aimed at characterizing air concentrations of various chemicals including asbestos, VOCs, and particulates. He was also involved in preparing for a Cal-OSHA Voluntary Protection Program (VPP) STAR recertification.

More recently, Dr. Cowan has provided technical and litigation support on various projects involving exposure and human health risk assessment of chemicals in a variety of occupational, environmental, and consumer product settings. His experience includes investigating the health effects of exposure to a variety of compounds, including benzene, styrene, vinyl chloride, and other VOCs, metals including manganese, and asbestos. He also has expertise and has published in the area of respiratory protection, biological modeling of drugs and alcohol, product stewardship and sustainability involving methods for comprehensive product safety assessments. Dr. Cowan has published more than 25 abstracts, book chapters, and peer-reviewed papers on various industrial hygiene, consumer products safety, environmental exposure, toxicology, and risk-related topics.