Thomas Dydek

Dr. Thomas Dydek

Dydek Toxicology Consulting, LLC
5208 Avenue H
Austin , TX 78751
Mobile: 512-663-7836
Office: 512-280-5477


Dr. Thomas M. Dydek is a Ph.D., Board-Certified Toxicologist (D.A.B.T.) and Licensed Professional Engineer (P.E.) with more than 30 years of continuous experience in the environmental field. He has served as an expert witness in more than 250 toxic tort and related cases, has given 50 depositions, and has testified at trial ten times in the last 20 years.

Dr. Dydek is an expert in evaluating the effects of exposures to chemicals and microbial agents on human health. He has given expert witness testimony concerning the health effects of exposure to metals, pesticides, petroleum products, solvents, oil and gas fracking chemicals, toxic gases, as well as to molds and bacteria. He has also worked on product safety/liability projects, alternative fuels registrations, tobacco litigation, and is a peer-reviewer for books and EPA human health risk assessment documents.

Areas of Expertise

  • Asbestos
  • Carbon Monoxide Poisoning
  • Chemicals
  • Environmental
  • Environmental Toxicology
  • Hazardous Materials
  • Lead Poisoning
  • Occupational Medicine
  • Pesticides
  • Petrochemicals

Expert Background

Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
A: B.A. in Mechanical Engineering from Rice University, Houston Texas
M.S. in Environmental Science and Engineering, Rice University
PhD in Environmental Science from University of Carolina School of Public Health
Post-Doctoral Fellowship in Toxicology, University of Texas College of Pharmacy
Board Certified as a Diplomate of the American Board of Toxicology (DABT)
Licensed Professional Engineer (PE)
Q: Please list your affiliations or memberships in any professional and/or industry organizations:
A: Member of the Society of Toxicology, the American College of Toxicology, the Roundtable of Toxicology Consultants, the American Conference of Governmental Industrial Hygienists, and the Air and Waste Management Association (Vice-Chair of the Air Toxics Committee, International AWMA; Treasurer of Central Texas Chapter of AWMA; Membership Chair of Central Texas AWMA).
Q: Please list any teaching or speaking experience you have had, including subject matter:
A: Saint Edward's University, Austin, Texas. Dr. Dydek taught several undergraduate courses in the Environmental Studies Program in the Department of Physical and Biological Sciences. These courses included Environmental Studies, Toxicology, Industrial Hygiene, and Urban Planning. Dr. Dydek served for 13 years as an Adjunct Professor at the University of Texas School of Public Health in San Antonio, Texas.

"Effects of Dynamic Operating Parameters on the Calibration Stability of CHAMP Aerometric Sensors".
"Neutralization and Size Changes of Sulfuric Acid Mist Particles in a Model of the Human Upper Airways".
"Studies of the Behavior of Sulfuric Acid Mist in a Model of the Human Upper Airways".
"Human Exposure to Potentially-Toxic Elements Through Ambient Air in Texas"
"Ozone Health Effects", Ozone-Its Environmental and Economic Impact on Southeast Texas"
"Risk Assessment in Health Effects Review of Air Permits in Texas".
"Effects Evaluation of Non-Criteria Air Pollutant Emissions from Hazardous Waste Management Facilities in Texas".
"Texas Procedure for Assessing Air Toxics".
"Texas Experience in Hazard, Exposure, and Risk Assessment Methods".
"Texas Procedure for Assessing Air Toxics".
"Effects Evaluation of Hazardous Waste Handling Facilities".
"Air Toxics Regulation- Federal and State".
"Effects Evaluation of Accidental Releases or Air Toxics: A Case Study of a Vinyl Chloride Release".
"Risk Communication in Air Permitting in Texas".
"Air Toxics".
"Update on the Gulf Coast Community Exposure Study".
“Air Toxics Review”.
"Comparison of Health Risk Assessment Approaches for Carcinogenic Air Pollutants".
"Texas Air Control Board Programs Concerning Air Toxics".
"Essentials of Quantitative Risk Assessment".
"Epidemiology: The Discipline and Its Uses".
"Introduction to Risk Assessment and Risk Reduction".
"Toxicology, Epidemiology and Risk Assessment in Environmental Programs".
"Overview of Environmental Risk Assessment Programs".
"Quantitative Risk Assessment and its Applicability to Industrial Hygiene".
“Adventures of an Expert Witness Toxicologist”.
“So You Want to be a Toxicology Consultant”.
“Working with an Expert Witness”.
“Toxicology in the Media”.
“The Toxicologist as an Expert Witness”.
“Toxicology Consulting for the Chemical Industry”.
Q: Have any of your accreditations ever been investigated, suspended or removed? (if yes, explain)
A: No.
Q: On how many occasions have you been retained as an expert?
A: Approximately 250.
Q: For what area(s) of expertise have you been retained as an expert?
A: Evaluating the potential human health effects associated with exposure to toxic chemicals such as metals, gases, pesticides, petroleum products, solvents, oil and gas fracking chemicals, and many other chemicals in occupational and community settings.

Evaluating the potential for odor nuisance conditions caused by airborne emissions of industrial chemicals. I have served as an expert in tobacco litigation cases where smokers had occupational exposures to chemicals that could cause similar diseases. I have been retained on serveral cases of lead-based paint exposure.

Evaluating the potential for adverse health effects of implanted medical devices and consumer products.

Preparing Baseline Risk Assessments, establishing clean-up guidelines or standards, conducting state of the art reviews, and doing chemical exposure assessments.

Investigating indoor air quality including projects involving exposure to molds and/or bacteria, and

Functioning as an expert witness in toxic tort cases, criminal proceedings, worker’s compensation matters, and administrative hearings before environmental agencies.
Q: In what percentage of your cases were you retained by the plaintiff?
A: About 40%
Q: In what percentage of your cases were you retained by the defendant?
A: About 60%
Q: On how many occasions have you had your deposition taken?
A: About 50 over the past 20 years.
Q: When was the last time you had your deposition taken?
A: July 22, 2015.
Q: On how many occasions have you been qualified by a court to give expert testimony?
A: I have testified at trial 10 times over the past 20 years.
Q: On how many occasions have you testified as an expert in court or before an arbitrator?
A: 10 times.
Q: For how many years have you worked with the legal industry as an expert?
A: 25 years.
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: Consulting, review of medical records, review environmental test results, preparation of expert reports, deposition and trial testimony.
Q: What is your hourly rate to consult with an attorney?
A: $350
Q: What is your hourly rate to review documents?
A: $350
Q: What is your hourly rate to provide deposition testimony?
A: $525
Q: What is your hourly rate to provide testimony at trial?
A: $525
Q: Please list any fees other than those stated above (E.g.: travel expenses, copy fees, etc.)
A: Major out-of-pocket expenses: airfare, hotels, rental car, large copying jobs, etc. are charged at cost.


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Richards, Rodriguez & Skeith
816 Congress Avenue, Suite 1200
Austin, Texas 78701
(512) 476-0005

Mr. Rod Johnson
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600 Congress Avenue, Suite 2800
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Mr. Danny Worrell
Katten Muchin Rosenman L.L.P.
111 Congress Avenue, Suite 1000
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(512) 691-4000