Todd Umstot received his B.S. in Geology and Environmental Science from the University of Massachusetts, Amherst in 1993 and an M.S. in Hydrogeology from the University of Nevada, Reno in 2002. Since 2002, he has worked as a hydrogeologist for Daniel B. Stephens & Associates in Albuquerque, New Mexico. His professional interests include the study of vadose zone processes, groundwater flow, NAPL migration, and the fate and transport of contaminants.