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Expertise Description

I have over 35 years experience in the fields of Toxicology and Pharmacology. My areas of expertise include medical, human and environmental exposure / risk assessments and regulatory toxicology evaluations. I also specialize in pesticides and environmental chemicals. I have more than 25 years expert witness experience with consultations, deposition, and courtroom testimony.

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Expert Witness

My expert witness experience includes: valuation of exposure to natural gas, exposure to liquid nitrogen on adult, fumigation effects on adults, asphalt fumes on farms, household lead poisoning in child, and leukemia risk in fireman. My experience also includes the exposure of: ammonia in hotel room, evaluated long-term effects of tear gas, workers to molds, lead to child in old home, homeowners to CS (tear) by police, vacationer to detergents as cause of skin loss, workers and dental patients to isocyantes in polyurethane molds, nature gas in apartments, petroleum advents in municipal yards, formaldehyde in pig barns and sarcoidosis of lung, depilatory agents-effect of pH on alleged skin effects, toxic molds and evaluation of physical effects in homeowner, worker to acid fumes in hardware store, schools to pesticides, school to methyl bromide, PVC fumes exposure in automobile electrical fire, and occupational respiratory irritants from gas fired peaking plant.

Consulting Experience

My consulting services include: Human and environmental exposure / risk assessments; Regulatory toxicology evaluations; Regulatory defense of studies and products; Development of guidelines for evaluation of data; Chronic and special study director


Ph.D.Toxicology & PharmacologyUniversity of California Davis
B.S.BiologyCalifornia State University Hayward

Licenses Certifications

Diplomate of American Board of Toxicology

Awards & Affiliation

Environmental Protection Agency (EPA) Outstanding Achievement Award

Primary Affiliation

Society for Environmental Toxicology and Chemistry

Partial List of Consulting Expert Witness Cases