Expert Details

Expert in Environmental Science, Risk Assessment

Expert ID: 734251 Texas, USA

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He has managed risk assessments and developed site sampling plans, data evaluation, calculation of risk estimates, and development of risk-based cleanup standards for commercial clients and governmental agencies.

He has extensive experience in the assessment of soil, groundwater, surface water, and air for risks associated with exposures to contaminants at for the affected locations. These assessments include: inorganic contaminants and metals, radioactive materials, organic compounds, including polynuclear aromatics (PAHs), dioxins, pesticides and herbicides, polychlorinated biphenyls (PCBs)], and explosives.

He developed risk-based cleanup levels to be protective of potential cancer risk and noncancer hazard health effects from exposure to contaminants. The cleanup levels for soil would be protective of groundwater if chemicals were leached from soil to groundwater.

He served on the National Council on Radiation Protection and Measurements, Task Group 15 on Uranium.

He provided statistical analysis of groundwater monitoring data that was used with hydrogeological information to infer contamination plume stability or the direction of plume migration.

He conducted statistical analysis of cleanup confirmation sampling data, which included isolated low concentrations of lead above regulatory cleanup levels, to demonstrate that the average lead concentration at a potential building site would not exceed the cleanup level.

He served on Advisory Committees of the Texas Commission on Environmental Quality (TCEQ) to develop guidance documents for the Texas Risk Reduction Program (TRRP) on Target Chemicals of Concern (TRRP-10) and Determining Representative Concentrations (TRRP-15)

He completed a site risk assessment under the Texas Commission on Environmental Quality (TCEQ) Risk Reduction Rules (RRR) and consulted on the client's decision to conduct further work under the newer Texas Risk Reduction Program (TRRP) rules. The TCEQ approved the risk assessment to satisfy the requirements of an Affected Property Assessment Report (APAR) and further work has progressed under TRRP rules.

Education

Year Degree Subject Institution
Year: 1972 Degree: Ph.D. Subject: Chemistry Institution: University of Illinois-Chicago
Year: 1965 Degree: B.S. Chem. Subject: Chemistry Institution: University of Michigan

Work History

Years Employer Title Department Responsibilities
Years: 1991 to Present Employer: Undisclosed Title: Sr. Risk Assessor Department: Environmental Services Responsibilities: Regulatory analysis, statistical sampling plan development, analytical data analysis, risk assessment, risk-based cleanup level development, cleanup level attainment assessment, remediation plan and closure document support.
Years: 1975 to 1991 Employer: Inhalation Toxicology Research Institute Title: Chemist Department: Radiobiology Group Responsibilities: Management of a multi-year project funded by the U.S. Nuclear Regulatory Commission (NRC) to investigate toxicity of inhaled refined uranium ore dust. Contribution to a project funded by the U. S. Department of Energy (DOE) to investigate the inhalation toxicology of industrial mixed uranium and plutonium oxide aerosols in laboratory animals. Management of a project funded jointly by three national laboratories (Los Alamos National Laboratory, Sandia National Laboratory and Lawrence Livermore National Laboratory) to characterize aerosols produced by plutonium combustion.
Years: 1973 to 1975 Employer: New Mexico State Univ. Title: Post-Doctoral Student Department: Chemistry Responsibilities: Conduct research to synthesize compounds that bind both proteins and metal ions and act as a probe of the binding site of trypsin.
Years: 1972 to 1973 Employer: Texas A&M Univ. Title: Post-Doctoral Student Department: Chemistry Responsibilities: Conduct research to describe the relationship between the circular dichroism and uv-visible absorption spectra of metal ion complexes of amino acids and Vitamin B6.

Government Experience

Years Agency Role Description
Years: 1991 to 2015 Agency: USA / US Army Corps of Engineers, US Air Force, US Navy Role: Site characterization, risk assessment, remediation support Description: He has provided risk assessments for sites at U. S. Air Force Bases, U. S. Navy Bases, U. S. Army Bases, former munitions manufacturing facilities in Ohio, Kansas, and Texas. These risk assessments were conducted according to U. S. EPA and state regulations of Ohio, California, Arkansas, Missouri, and Texas. He developed risk-based cleanup levels remedial goals for chemicals and radionuclide constituents detected at the Paducah Gaseous Diffusion Plant in Paducah, Kentucky according to criteria developed by the Department of Energy (DOE), EPA, and the state of Kentucky.

Career Accomplishments

Associations / Societies
Health Physics Society: Member from approximately 1976 through 2006

Society for Risk Analysis: Member from approximately 1992 through 2014

Additional Experience

Other Relevant Experience
He served on Advisory Committees of the Texas Commission on Environmental Quality (TCEQ) to develop guidance documents for the Texas Risk Reduction Program (TRRP) on Target Chemicals of Concern (TRRP-10) and Determining Representative Concentrations (TRRP-15).

Language Skills

Language Proficiency
English Fluent spoken and written

Fields of Expertise

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