Biography: Roberta L. Grant, Ph.D.
Toxicology Division
Texas Commission on Environmental Quality
Current Position
Roberta is the manager of the Toxicology Section within the Toxicology Division.
Prior Experience and Education
Roberta received a Ph.D. in toxicology from the College of Pharmacy, University of
Texas at Austin, in 1995. Upon graduation, she completed a postdoctoral fellowship in
the Integrated Toxicology Program at Duke University before joining the Texas Natural
Resource Conservation Commission in January 1997 as a toxicologist. Roberta was
promoted to manager of the Toxicology Section at the Texas Commission on
Environmental Quality in 2010. In her current position, Roberta manages staff
conducting the toxicological evaluation of air permit applications, monitoring projects,
risk assessments, and for conducting toxicity assessments to develop acute and chronic
inhalation toxicity factors. Roberta participated with other staff toxicologists in writing
2012 TCEQ Guidelines for Developing Toxicity Factors (revised RG-442). She is also
the toxicology project coordinator for developing chemical-specific Development
Support Documents, a technical document that outlines the hazard identification and
dose-response procedures for development of chemical-specific toxicity factors. Dr.
Grant has developed inhalation acute and chronic toxicity factors for several chemicals:
1,3-butadiene, three butene isomers, methacrolein, 4-vinylcyclohexene, crotonaldehyde,
pentene isomers, crystalline silica, nickel compounds, and arsenic compounds. She has
served on USEPA’s National Advisory Committee for Developing Acute Exposure
Guideline Levels (AEGLs), as a member on three Federal Insecticide, Fungicide, and
Rodenticide Act (FIFRA) Scientific Advisory Panels and on a National Academy of
Science peer review committee. Dr. Grant is a member of the Science and Decisions
Dose-Response Advisory Committee as well as other scientific planning committees.
She is on the editorial board of Toxicology in Vitro and is an adjunct professor in the
College of Pharmacy, UT Austin. She has published numerous scientific articles and
book chapters.
Contact Information
Telephone: (512) 239-4115
E-mail: roberta.grant@tceq.texas.gov