for the Geophysical Research Board of the National Research Council. His research interests include hazardous waste disposal and ground water transport modeling.

Russell Christman is professor of environmental sciences at the University of North Carolina-Chapel Hill. Dr. Christman received his B.S., M.S., and Ph.D. in chemistry from the University of Florida. He has taught sanitary and civil engineering at the University of Washington, where he also served as Associate Professor of the Applied Sciences. His research focuses on the chemical structures of natural product organic materials in water; methods of organic analysis in water samples; and mechanisms of colloidal destabilization with hydrolysis products of aluminum III.

James Crook is director of water reuse for the firm Black & Veatch. He was previously with Camp Dresser & McKee Inc. Prior to that he was with the California Department of Health Services, where he directed the department's water reclamation and reuse program. Dr. Crook has served on several water reuse advisory panels and has been an advisor to the National Sanitation Foundation, Pan American Health Organization, United Nations Development Programme, and U.S. Agency for International Development. He was the principal author of water muse guidelines published by the U.S. Environmental Protection Agency and has assisted in the development of water reclamation and reuse criteria for several sates. Dr. Crook received his B.S. in civil engineering from the University of Massachusetts; he received his M.S. and Ph.D. in environmental engineering from the University of Cincinnati.

Anna Fan is chief, Pesticide and Environmental Toxicology Section, Office of Environmental Health and Hazard Assessment, California Environmental Protection Agency, State of California. She received her Ph.D. in toxicology from Utah Sate University. Dr. Fan has worked to develop water standards for the state. Her responsibilities include evaluating and establishing California's safe drinking water standards, conducting risk-based assessments of chemical contamination in various environmental media, and conducting epidemiological investigations of pesticide health effects. Dr. Fan chairs a public health working group and has worked on contaminants in drainage water in the San Joaquin Valley. She is a member of the Drinking Water Committee, Science Advisory Board, United States Environmental Protection Agency. She is also an adjunct professor at San Jose State University.

Denise Fort is director of the Water Resources Administration Program at the University of New Mexico and a member of the faculty of the School of Law. Previously she was a consultant with the Natural Heritage Institute in California. She has served as attorney for the New Mexico Public Interest Group, the Southwest Research and Information Center, and the Taxation and Revenue Department of New Mexico. She was also Cabinet Secretary of the New Mexico Department of Finance and Administration where she was responsible for management of the state's budget, fiscal controls, public school and local govern-

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