TAYLOR, Cliff D., U. S. Geological Survey, Box 25046 Denver Federal Center, MS-973, Denver, CO 80225-0046, ctaylor@usgs.gov, BLISS, James D., U. S. Geological Survey, E.N.R. Building, Tucson, AZ 85719, DENNING, Paul D., U. S. Geological Survey, Box 25046 Denver Federal Center, MS-973, Denver, CO 80225-0046, HAYES, Timothy S., U.S. Geological Survey, E.N.R. Building, Tucson, AZ 85719, HORTON, John D., U.S. Geological Survey, Box 25046 Denver Federal Center, MS-973, MS 973, Denver, CO 80225, PARKS, Heather L., U.S. Geological Survey, 904 W Riverside Ave. Room 202, Spokane, WA 99201, WILSON, Anna B., U.S. Geological Survey, Central Mineral and Environmental Science Center, Box 25046, MS 973, Denver Federal Center, Lakewood, CO 80225, WINTZER, Niki E., USGS, 904 W. Riverside Ave., Rm. 202, Spokane, WA 99201, and ZIENTEK, Michael L., U.S. Geological Survey, 904 W Riverside Ave, Spokane, WA 99201