GLEESON, Tom¹, SMITH, Leslie¹, JANSEN, Nils², HARTMANN, Jens², DÜRR, Hans³, MANNING, Andrew H.⁴, VAN BEEK, Rens³ and JELLINEK, Mark¹, (1)Earth and Ocean Sciences, University of British Columbia, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada, (2)Institute for Biogeochemistry and Marine Chemistry, University of Hamburg, Bundesstraße 55, Hamburg, D-20146, Germany, (3)Faculty of Geosciences, Utrecht University, P.O. Box 80115, Utrecht, 3508 TC, Netherlands, (4)U.S. Geological Survey, P.O. Box 25046, Mail Stop 973, Denver, CO 80225-0046, tgleeson@eos.ubc.ca, tgleeson@eos.ubc.ca

ALSAARAN, Nasser, Department of Geography, King Saud University, P. O. Box 2456, Riyadh, 11451, Saudi Arabia, alsaaran@ksu.edu.sa, alsaaran@ksu.edu.sa

KASHUBA, Roxolana¹, QIAN, Song², CUFFNEY, Thomas F.¹, MCMAHON, Gerard¹ and RECKHOW, Kenneth H.², (1)USGS, North Carolina Water Science Center, 3916 Sunset Ridge Rd, Raleigh, NC 27607, (2)Nicholas School of the Environment, Duke University, Durham, NC 27708, rkashuba@usgs.gov, rkashuba@usgs.gov

MCDOUGAL, Robert R., U.S. Geological Survey, Denver Federal Center, MS 964D, bldg. 20, Denver, CO 80225, HOLLOWAY, JoAnn M., U.S. Geological Survey, Denver Federal Center, MS 964D, Denver, CO 80225-0046, SCHMIDT, Travis S., USGS, 2150 Centre Ave Bldg C, Fort Collins, CO CO 80526, STILLINGS, Lisa L., USGS, University of Nevada, Reno, MS 176, Reno, NV 89557, TUTTLE, Michele L.W., U.S. Geological Survey, MS 964D, Box 25046, Denver Federal Center, Denver, CO 80225 and BLECKER, Steve W., U.S. Geological Survey, Western Minerals and Environmental Science Center, University of Nevada, MS 176, Reno, NV 89557, rmcdouga@usgs.gov, rmcdouga@usgs.gov

TRIERWEILER, Annette M.¹, MONDRO, Claire A.¹, RESTREPO, Carla² and CAREY, Anne E.³, (1)School of Earth Sciences, The Ohio State University, 275 Mendenhall Laboratory, 125 South Oval Mall, Columbus, OH 43210-1398, (2)Department of Biology, University of Puerto Rico-Rio Piedras, P.O. Box 23360, San Juan, PR 00931–3360, (3)School of Earth Sciences, The Ohio State University, Columbus, OH 43210, carey.145@osu.edu, carey.145@osu.edu

ZHU, Jun, Department of Environmental, Earth, and Ocean Sciences, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA 02125-3393, WILSON, Brittan, Department of Biology and Chemistry, Texas A&M International University, 5201 University Boulevard, Laredo, TX 78041, GONTZ, Allen M., Environmental, Earth and Ocean Sciences, University of Massachusetts - Boston, 100 Morrissey Boulevard, Boston, MA 02125, NITSCHE, Frank, Lamont-Doherty Earth Observatory, of Columbia Univ, Palisades, NY 10964 and OLSEN, Curtis, Environmental, Earth and Ocean Sciences, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA 02125-3393, jun.zhu@umb.edu, jun.zhu@umb.edu

MEYERHOFF, Steven, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80403 and MAXWELL, Reed M., Geology and Geologic Engineering, Colorado School of Mines, 1500 Illinois St, Golden, CO 80401, smeyerho@mines.edu, smeyerho@mines.edu

HADLEY, Heidi K., U. S. Bureau of Land Management, 125 S State St, Rm 6107 UC 247, Salt Lake City, UT 84138, HEPNER, George F., Department of Geography, University of Utah, 260 S Central Campus Dr Rm 270, Salt Lake City, UT 84112, KOLESAR, Peter T., Geology Department, Utah State University, 4505 Old Main Hill, Logan, UT 84322-4505 and GRAUCH, Richard I., US Geological Survey, Denver Federal Center, Denver, CO 80225, heidi_hadley@blm.gov, heidi_hadley@blm.gov

QUINN, John J., Environmental Science Sivision, Argonne National Laboratory, 9700 S. Cass Avenue, EVS- 240, Argonne, IL 60439, VAN LONKHUYZEN, Robert A., Environmental Science Division, Argonne National Laboratory, 9700 S. Cass, Argonne, IL 60439 and KAMIYA, Mark A., Environment, Safety, and Health, Argonne National Laboratory, 9700 S. Cass, Argonne, IL 60439, quinnj@anl.gov, quinnj@anl.gov