MORRISON, Jean, U.S. Geological Survey, Geology, Geophysics, & Geochemistry Science Center, Denver, CO 80225, MANNING, Andrew, U.S. Geological Survey, P.O. Box 25046, Mail Stop 973, Denver, CO 80225, WANTY, Richard B., U.S. Geological Survey, P.O. Box 25046, Mail Stop 964D, Denver, CO 80225, WALTON-DAY, Katie, U.S. Geological Survey, Box 25046, MS415, Denver Federal Center, Denver, CO 80225, RUNKEL, Robert L., Colorado Water Science Center, U.S. Geological Survey, U.S. Geological Survey, 3215 Marine St, Bldg 6, Boulder, CO 80309 and MCGEE, Ben Nevis, Crustal Geophysics and Geochemistry Science Center, U.S. Geological Survey, P.O. Box 25046, Denver, CO 80225-0046