Dr. Chunmiao ZhengDr. Chunmiao Zheng is professor of hydrogeology in the Department of Geological Sciences at the University of Alabama. He holds a Ph.D. in hydrogeology from the University of Wisconsin-Madison. From 1988 to 1993, he was a senior hydrogeologist and director of software development at S. S. Papadopulos & Associates, Inc., an environmental and water-resource consulting firm. Since 1993, he has been leading the interdisciplinary hydrogeology program at the University of Alabama. Dr. Zheng is developer of MT3D/MT3DMS, a widely used contaminant fate and transport simulation model, and co-author of the textbook Applied Contaminant Transport Modeling, published by John Wiley & Sons and currently in the second edition. Dr. Zheng has published over 50 papers and book chapters on both applied and theoretical aspects of hydrogeology, contaminant transport, and optimal groundwater management. He is recipient of the 1998 John Hem Excellence in Science and Engineering Award from the National Ground Water Association for outstanding contributions to the understanding of groundwater, and is a fellow of the Geological Society of America. Dr. Zheng serves on the Groundwater Committee of the American Geophysical Union, the Standing Committee on Hydrologic Information Systems of the Consortium of Universities for Advancement of Hydrologic Science, and the editorial boards of Ground Water and Hydrogeology Journal.