Dave Dahlstrom is a hydrogeologist at Barr Engineering Company. He has over 32 years of experience in environmental consulting and specializes in site characterization, process identification, conceptualization, and computer-based simulation of groundwater flow systems and contaminant transport. Dave’s work is focused on the design and evaluation of predictive uncertainty of computer models of hydrologic systems and the use of these models in addressing water supply and environmental issues. He has a BS in Geology from Notre Dame and an MS in Geology from the South Dakota School of Mines and is registered as a professional geologist in five states.