Helen Dawson currently serves as the Regional Hydrogeologist for the Superfund Program in Region VIII, US EPA. Prior to joining the US EPA four years ago, Helen worked for eight years as a professor of Environmental Science and Engineering at the Colorado School of Mines, seven years as a consultant and expert witness to private industry, and five years as a geochemist. Helen has a B.S. in Geology from Stanford University, an M.S. in Geochemistry from the Colorado School of Mines, and a Ph.D. in Environmental Engineering from Stanford University.