Search our environmental expert witness and consultant directory that includes expert listings for hazardous materials, environmental assessments, industrial hygiene, oil spills, asbestos, environmental testing, EPA compliance toxicology risk assessment and more. Browse our list of categories or use our search tool to find the right environmental expert witness or consultant for your case.

Toxicology Risk Assessment Expert Witness 

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Randy D. Horsak PE, 3TM Consulting, LLC  
Houston, TX                              
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Randy Horsak is President of 3TM Consulting, LLC, a consulting firm that provides environmental science, engi   full bio >

James C. Norris  
Benton, AR                                
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Dr. Norris has training in both pharmacology and toxicology and has been practicing toxicology for over 20 ye   full bio >

Richard Parent PhD, DABT, FATS, RAC, ERT, Consultox, Ltd.  
Damariscotta, ME                    
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Dr. Richard Parent has been engaged in support of litigants, both plaintiff and defense, since 1984 and his f   full bio >

Mitchell S. Stoller, Marex  
Rancho Santa Margarita, CA
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Captain Mitchell Stoller is a former supertanker captain and LA Harbor pilot with expertise in the field of m   full bio >

Susan E. Kegley, Pesticide Research Institute
Berkeley, CA
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Dr. Kegley is a PhD organic chemist and founder of Pesticide Research Institute (PRI). She has 11 years of ex full bio >

Richard Troast Ph.D., Troast Environmental Consulting, LLC
Locust Grove, VA
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Dr. Troast has over 30 years experience working for the USEPA as an environmental scientist in several progra full bio >

Brian Dementi
Richmond, VA
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Former employment from EPA specializing in reviewing EPA FIFRA Guideline toxicology studies [Subchronic, Chro full bio >

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