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Mr. Paul Turnham is a Managing Scientist in Exponent’s Health Sciences practice. He is a civil engineer and a licensed professional engineer. He has over 15 years experience working in the fields of quantitative human health risk assessment site characterization and remediation and environmental fate and transport. He specializes in the development and application of site and case specific approaches to risk and exposure assessment. He has performed and provided day-to-day management of risk and exposure assessments for private clients and in support of litigation. Projects he has managed include residential sites CERCLA (Superfund) sites both for risk assessment-related services and in support of PRP groups for share allocation issues a RCRA clean closure site sites subject to state oversight and combustion sources such as a hazardous waste-burning cement kiln a coal-fired power plant and coke oven batteries.
Mr. Turnham has evaluated health risks arising from actual and hypothetical exposures to environmental media and indoor air impacted by chlorinated solvents petroleum compounds metals (in particular arsenic and chromium) polychlorinated biphenyls and dioxins and asbestos and man-made vitreous fibers. He has assessed the potential risks from the vapor intrusion exposure pathway at residential commercial and industrial properties. This work included development of a risk assessment and sampling and analysis work plan for potential residential exposures at Superfund site. Mr. Turnham has also led site investigations and remedial actions at sites subject to state regulations and voluntary cleanup programs. | 