A Technical Expert

Dr. Daniel B. Stephens is an internationally recognized expert in hydrogeology, including water resources development, water quality, and vadose zone hydrology. He has more than 40 years of experience on projects ranging from site characterization to mathematical modeling of flow and transport, and is the author of the textbook Vadose Zone Hydrology.

Dr. Stephens has experience in federal and state courts, as well as in administrative hearings on water rights and groundwater and soil contamination cases. As a litigation expert, he has provided testimony in more than 70 depositions and trials in the field of hydrology, involving characterization of the vadose zone and site hydrogeology, numerical modeling, environmental forensic investigations, and expert testimony for dozens of cases involving contamination of soil and groundwater, more than 30 of which involved allocation of remediation costs among potentially responsible parties (PRPs).