Environmental Expert Witnesses in California

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Environmental expert witnesses practice in a variety of fields, including environmental law, environmental engineering, environmental health and safety, and environmental science. Some of the most common specialties among environmental expert witnesses include hazardous waste management, air quality analysis, water pollution control, soil contamination assessment, and climate change impact studies. They can opine on the effects of industrial pollution, impacts of land development, natural resource depletion, waste disposal practices, and climate change policies.

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Dr Ryan Charles LewisView profile

ID: 6771104

Dr. Ryan Lewis, MS, PhD, CIH

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California

Dr. Ryan C. Lewis has 18 years of experience in the field of Industrial Hygiene and Environmental Epidemiology, specializing in Environmental Health Sciences, Occupational Health and Safety, and Exposure Science. He earned his BS in Anthropology from the University of Michigan, his MS in Environmental Health and Industrial Hygiene from the Harvard T.H. Chan School of Public Health, and his Ph.D....

Forklift Safety Expert WitnessView profile

E-008406

Forklift Safety Expert Witness

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California

This highly qualified expert has over 35 years of experience in providing safety training for forklift use. Certified as a Forklift Instructor by the National Safety Council and as an OSHA Authorized General Industry Trainer, his expertise includes various warehouse systems and industrial truck classes 1-7 including electric forklifts, pallet jacks, and tug tractors. He has authored two...

Dr Brent Daniel KergerView profile

ID: 144560

Dr. Brent Kerger, PhD, DABT

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California

Dr. Brent Kerger has over 35 years of experience in Toxicology and Epidemiology. He earned his BS in Chemistry from Florida State University and his PhD in Toxicology from the University of Arkansas for Medical Sciences. Today, this expert is board-certified in Toxicology. Formerly he served as the Director at Health Science Resource Integration, Inc and as a Senior Principal Health Scientist at...

Agriculture Expert WitnessView profile

E-012576

Agriculture Expert Witness

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California

This expert is one of two owners and a Principal Scientist at a major environmental firm. This firm specializes in providing solutions to challenging agricultural and environmental problems throughout the world. Their areas of expertise include soil science, water quality and demand evaluation and management, agricultural systems, salinity and nutrient management, ecosystem restoration,...

Dr Paul Edward RosenfeldView profile

ID: 72244

Dr. Paul Rosenfeld, PhD

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California

Dr. Paul E. Rosenfeld has 24 years of experience in Soil Science and Environmental Science. He earned his BA in Environmental Studies from the University of California, Santa Barbara, his MS in Environmental Studies from the University of California, Berkeley, and his Ph.D. in Soil Chemistry from the University of Washington. Formerly, this expert served as an Adjunct Professor and Assistant...

Environmental Safety Expert WitnessView profile

E-008419

Environmental Safety Expert Witness

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California

This expert is a highly qualified environmental risk expert. He earned his masters degree in Industrial Hygiene at the University of Michigan and is certified in numerous environmental mitigation capacities. He belongs to a number of prestigious societies in the environmental space, including the American Public Health Association and the American Industrial Hygiene Association. He has held...

Mr Thomas Wayne BlackburnView profile

ID: 141495

Mr. Thomas Blackburn, PE, GE, FASCE, FACEC

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California

Mr. Thomas W. Blackburn has 30 years of experience in Civil Engineering. He earned his BS and MS in Civil Engineering from Missouri University of Science and Technology. Today, this expert is licensed as a Professional Civil Engineer in the states of California and Nevada and as a Geotechnical Engineer in the state of California. Formerly, this expert served as the President of Anderson...

Weed Science Expert WitnessView profile

E-069765

Weed Science Expert Witness

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California

This expert is an endowed professor of Weed Science at a very prominent university in California. He is the author of 2 patents, 5 books, and over 100 scholarly publications in field of Weed Science and Agronomy. He earned his doctoral degree from Kansas State University and later served as an agronomist and weed specialist at Washington State University, as well as a lecturer in Urban...

Mark A Katchen, CIH-CP, FAIHA, MBA, MSView profile

ID: 19791

Mr. Mark Katchen, CIH-CP, FAIHA, MBA, MS

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California

Mr. Mark A. Katchen has 35 years of experience in Industrial Hygiene. He earned his BA in Psychobiology from the University of California Los Angeles, his MS in Environmental and Occupational Health from California State University Northridge, and his MBA in Organizational Management, and Marketing from Loyola Marymount University. Today, this expert is a Certified Industrial...

Environmental Toxicology Expert WitnessView profile

E-099404

Environmental Toxicology Expert Witness

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California

This highly qualified environmental toxicologist specializing in mechanisms of action of dioxins and dioxin-like chemicals. After earned his PhD in Toxicology, this expert went on to hold numerous research roles, most notably at UC Davis. He is prominent in literature and as a presenter in the space. Currently, this expert is an Environmental Toxicology Research Scientist at a university in...

Jeffrey Vahan Dagdigian, PhDView profile

ID: 86116

Dr. Jeffrey Dagdigian, PhD

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California

Dr. Jeffrey Vahan Dagdagian has over 33 years of experience in Engineering and Mechanics. He earned his BS in Biology and his Ph.D. in Chemistry from the University of Southern California. Formerly, this expert served as a Regional Manager and the Senior Vice President of West Coast Operations at McLaren-Hart, Inc., and as an Instructor of Environmental Management at the University of California,...

EHS / Industrial Hygiene Expert WitnessView profile

E-059189

EHS / Industrial Hygiene Expert Witness

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California

This expert has over 40 years of experience in the occupational health and safety field. He received his BS from Oakland University and MPH in Environmental Health from the University of Michigan. He has been certified by the American Board of Industrial Hygiene in the comprehensive practice of industrial hygiene since 1980. He is also certified by the State of California, Division of...

Dominik Dane Alexander, MSPH, PhDView profile

ID: 151753

Dr. Dominik Alexander, MSPH, PhD

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California

Dr. Dominik D. Alexander has 17 years of experience in the field of Epidemiology. He earned his BS in Public Health from the University of Minnesota, his MSPH in Epidemiology and Biostatistics from the University of South Florida College of Public Health, and his Ph.D. in Epidemiology from the University of Alabama Birmingham School of Public Health. Formerly, this expert served as the Senior...

Mold Inspection Expert WitnessView profile

E-136144

Mold Inspection Expert Witness

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California

This expert has over 19 years of experience in Mold and Home Inspections. He earned his BA and MA from California State University of Los Angeles, and has continued his education in Home and Mold Inspection through various courses and training. He is a certified Microbial Consultant, as well as Property Inspector by both the American Society of Home Inspectors and the California Real Estate...

Dallas Milo Cowan, CIH, DABT, PhDView profile

ID: 249245

Dr. Dallas Cowan, CIH, DABT, PhD

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California

Dr. Dallas Cowan has 14 years of experience in Toxicology and Industrial Hygiene. He earned his BA in Applied Physiology and Kinesiology from the University of Colorado Boulder, his MA in Industrial Hygiene from San Diego State University, and his Ph.D. in Toxicology from Purdue University. Today, this expert is certified as an Industrial Hygienist by the American Board of Industrial Hygiene....

Environmental Expert WitnessView profile

E-009358

Environmental Expert Witness

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California

For over 25 years, this expert has specialized in environmental risk management and insurance, including cost-of-risk evaluations, insurance underwriting, policy development, claims support & expert testimony, and development and evaluation of solutions for funding and transferring environmental risks. He has deep expertise in environmental insurance underwriting, and works with clients to...

David Allen Galbraith, MDView profile

ID: 365121

Dr. David Galbraith, MD

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California

Dr. David Galbraith has over 30 years of experience in the field of Occupational Health and Safety and Health Risk Assessment. He earned his BS in Chemistry from Stanford University and his MD from Yale School of Medicine. He then went on to a residency at the University of Washington Medical Center and then Swedish Medical Center. Formerly, this expert held roles as the Associate Director at...

Energy, Climate, and Environmental Insurance Expert WitnessView profile

E-400914

Energy, Climate, and Environmental Insurance Expert Witness

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California

This highly-qualified expert has extensive experience in energy, climate, and environmental insurance. He earned his MBA from the University of Southern California and his LLM from the University of Cambridge. This expert is licensed in Surplus Lines insurance and is a fellow of the Risk Management Society. He has formerly served as an insurance broker for Lloyd's and in several management...

Mark Thomas Zeko, CHG, MS, PGView profile

ID: 5998353

Mr. Mark Zeko, CHG, MS, PG

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California

Mr. Mark T. Zeko has 35 years of experience in the field of Geology. He earned both his BS in Geology and his MS in Environmental Science from California State University, Fullerton. Today, this expert is a Licensed Professional Geologist in the States of Alabama, California, Florida, Illinois, Indiana, Mississippi, Missouri, North Carolina, and Texas. Moreover, he is a Licensed Professional...

Recycling, Demolition, and Auction Expert WitnessView profile

E-487993

Recycling, Demolition, and Auction Expert Witness

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California

This expert has over 50 years of experience in the recycling, demolition, and auction industries. He is active in his field as a member of the Copper Club and the Institute of Scrap Recycling Industries. He began his career as an assistant foreman with Diversified Metals Corporation, the largest non-ferrous trading and processing company. He has formerly served as the president of Diversified...

Specialties:

Andrew Gale Salmon, PhDView profile

ID: 6090772

Dr. Andrew Salmon, PhD

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California

Dr. Andrew G. Salmon has over 45 years of experience in the field of Environmental Toxicology. He earned his BA, MA, and PhD in Biochemistry from the University of Oxford. Formerly, this expert served as Chief and Senior Toxicologist of the Air Toxicology and Risk Assessment Section for the State of California Environmental Protection Agency. Currently, this expert is an independent consultant...

Jim Nathan Tarr, MS, PEView profile

ID: 6323980

Mr. Jim Tarr, MS, PE

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California

Mr. Jim N. Tarr has over 46 years of experience in the field of Environmental Engineering. He earned his BS in Chemical Engineering from the University of Texas Austin and his MS in Chemical Engineering from the University of Houston and today, he is a licensed Professional Engineer in the State of Texas. Formerly, this expert served as an Engineer for the Texas Air Control Board at the Texas...

Carla Turner Kagel, PhDView profile

ID: 6805383

Dr. Carla Kagel, PhD

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California

Dr. Carla T. Kagel has 40 years of experience in Analytical Chemistry and Consumer Product Testing and Analysis. She earned her BS in Biochemistry from Clemson University and her Ph.D. in Analytical Chemistry from the University of Idaho. Formerly, she served as the Director of Analytical Services at the Environmental Research Group and at Woodward-Clyde Consultants as a Senior Project Chemist,...

Mark Grey, PhDView profile

ID: 6890997

Dr. Mark Grey, PhD

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California

Dr. Mark Grey has 17 years of experience in Soil Science, Hydrology, and Water Resources. He earned his BA in English from Eastern Washington University, his MS in Forest Ecosystem Analysis, and his Ph.D. in Soil Chemistry from the University of Washington. Today, this expert is licensed as a Community Association Manager in the state of Florida. Formerly, this expert served as the Director of...

Joseph WangView profile

ID: 11855

Dr. Joseph Wang

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California

This distinguished expert is currently a professor of astronautics, aerospace, and mechanical engineering at a highly regarded university in southern California. He received his BS in engineering mechanics and thermophysics at Tsinghua University and his MS in aeronautics and astronautics and his PhD in plasma physics at the Massachusetts Institute of Technology. He has been an author on over 70...

Sam RahebView profile

ID: 31052

Mr. Sam Raheb

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California

This expert earned his BS in mechanical engineering from the California State University of Northridge. He previously served as an engineering program manager in market applications development for BP America Advanced Materials Group. He was also the program manager and design engineer as well as the corporate IT administrator for Sierracin Corporation. This expert then served as the internet...

Siamak KhorramView profile

ID: 31081

Prof. Siamak Khorram

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California

This expert has over 20 years of experience in geospatial sciences with an emphasis in remote sensing and image processing. He earned his PhD in Remote Sensing and Image Processing from UC Berkeley and remains active in his field holding several patents in data fusion techniques related to imagery payloads and platforms. He has published over 200 articles in peer-reviewed journals on...

Kyu Jung KimView profile

ID: 36480

Dr. Kyu Jung Kim

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California

This expert earned a BS in mechanical engineering from Seoul National University and a MS in mechanical engineering from Korea Advanced Institute of Science & Technology. He went on to complete a MS in bioengineering and a PhD in mechanical engineering at the University of Michigan, as well as a postdoctoral fellowship in orthopedic biomechanics at the Mayo Clinic. Previously, this expert served...

Edward KellerView profile

ID: 37997

Prof. Edward Keller

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California

This expert has more than 35 years of experience in surface water hydrology as well as environmental and engineering geology. He graduated with his BS in geology from California State University, Fresno, his MS in geology from the University of California, Davis, and his Ph.D. in geology from Purdue University. He was formerly an assistant professor at the University of North Carolina, Chapel...

Phong LeView profile

ID: 45278

Mr. Phong Le

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California

This expert has over 20 years of experience as a design engineer and received his BS from the University of Wisconsin-Madison. He previously held roles as a mechanical engineer at the Wisconsin Porcelain Company, a technical designer for The Carlson Company, a detailer at Design and Production, Inc., and was an engineering consultant at ANK Design, Inc. He was also a patent illustrator at Legal...

Adam BovieView profile

ID: 45542

Mr. Adam Bovie

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California

This expert located in Southern California specializes in origin and cause investigation for product failures. He has completed FEMA and IAAI coursework in fire and explosion investigations and is currently a certified EIT in California. After serving as a high school teacher, he started his current position at an engineering analysis company. He has experience investigating hybrid electric...

Dr Abby LiView profile

ID: 6447146

Dr. Abby Li, PhD

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California

Dr Abby Li has specialized experience in the fields of Business & Finance: Consulting and Environmental: Toxicology. They earned their PhD in Pharmacology and Physiology and BA in Chemistry from the University of Chicago. Formerly, they held roles such as Senior Science Fellow/Toxicologist and Registration Manager at Monsanto. Currently, they work as a Senior Managing Scientist at Exponent.

Ms Renee M. KalmesView profile

ID: 370948

Ms. Renee Kalmes, MSPH, CIH

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California

Ms. Renee M. Kalmes has specialized experience in the fields of Environmental: Industrial Hygiene, Environmental: Hazardous Materials. They earned their MS in Air and Industrial Hygiene from University of North Carolina at Chapel Hill, BS in Environmental Science from Purdue University. Formerly, they held roles such as Managing Scientist at ChemRisk. Currently, they work as a Office Director...

The Average Environmental Expert Witness
Charges $375 / Hour

Based on hourly rates. Compare expert witness rates across thousands of specialties in all 50 states.

  • Review Fee

    $325

    Fee info

    This represents an expert’s hourly rate for participating in depositions. Experts may charge more for depositions that require them to travel, and some experts choose to bill a flat, daily or half-daily rate for deposition appearances.

  • Deposition Fee

    $375

    Fee info

    This represents an expert’s hourly rate for participating in depositions. Experts may charge more for depositions that require them to travel, and some experts choose to bill a flat, daily or half-daily rate for deposition appearances.

  • Court Fee

    $425

    Fee info

    This represents an expert’s hourly rate for participating in depositions. Experts may charge more for depositions that require them to travel, and some experts choose to bill a flat, daily or half-daily rate for deposition appearances.

Environmental Expert Witness FAQs

An environmental expert witness provides specialized knowledge and insights on environmental matters, such as pollution, conservation, climate change, and sustainability. They can help interpret complex scientific data and provide credible testimony.

Environmental expert witnesses are often needed in cases involving land use disputes, contamination issues, natural resource damages, regulatory compliance, hazardous waste management, and environmental impact assessments.

Yes. Environmental experts with a focus on climatology can provide valuable insights into climate change-related disputes, including those related to carbon emissions, sea-level rise, and extreme weather events.

Absolutely. Subspecialties can include air quality, water quality, soil science, toxicology, ecology, geology, meteorology, and many others. The choice of expert depends on the specifics of the case.

In construction disputes, an environmental expert can assess potential impacts on local ecosystems or evaluate compliance with environmental regulations. They may also analyze soil stability or contamination risks.

Expert Institute offers a personalized approach to help you find the highest quality experts. We source actively-practicing professionals who match all your requirements for specialty areas, work experience, litigation history, fee range, certifications, location, and more.

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