Bachelor, Cornell College, Mount Vernon, Iowa, 1985. Master of Science, Stephen F. Austin State University, Nacogdoches, Texas, 1989. Doctor of Philosophy, Texas Agricultural and Mechanical University, College Station, 1995.
Graduate teaching assistant Stephen F. Austin State University, 1988—1989, Texas Agricultural and Mechanical University. Post doctoral Seoul National University, 1996—1997. Journal editor Korean Radioactive Waste Society, Daejeon, Republic of Korea, since 2006.
With Korean Society Soil Groundwater Environmental, Seoul, since 2004, Korean Society Engineering Geology, Daejeon, since 2005, Korean Society Geosys. Engineering, Seoul, 2006—2008, Geological Society Korea, since 2007. Member of International Association Hydrological Sciences, American Geophysical Union, Sigma, Gamma, Epsilon (award 1987-1989).
Married Susan Hyun Kim, June 3, 1989. Children: Andrea Juhie, Dongue.