John Dougherty is a hydrogeologist with 28 years of experience in environmental consulting and has been working at CDM since 1999. At CDM he has been concentrating on hydrogeologic characterization of U.S. EPA Superfund sites in Region II. Many of these sites are situated in fractured bedrock terrain. He has experience in many aspects of site investigation, borehole geophysical investigations, and has designed and supervised the installation of monitoring wells at Superfund sites around the United States. Dougherty holds a B.S. in Geosciences from Pennsylvania State University.