1. Department of Civil and Environmental Engineering, Texas Tech University, Lubbock, Texas 79409-1023, The Institute of Environmental and Human Health, Texas Tech University, Lubbock, Texas 79409-1163, U.S. Geological Survey, Tucson, Arizona 85719, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, Bureau of Economic Geology, University of Texas at Austin, Austin, Texas, 78713-8924, U.S. Geological Survey, Menlo Park, California 94025, and U.S. Geological Survey, Lakewood, Colorado...