KONIKOW, Leonard, U.S. Geological Survey, 431 National Center, Reston, VA 20192, lkonikow@usgs.gov, lkonikow@usgs.gov

OELKERS, Eric, Cnrs, CNRS, 14, Avenue Édouard Belin, Toulouse, 31400, France, HERING, Janet, EAWAG, Überlandstrasse 133, P.O. Box 611, Dübendorf, 8600, Switzerland and ZHU, Chen, Department of Geological Sciences, Indiana University, Bloomington, IN 47405, oelkers@get.obs-mip.fr, oelkers@get.obs-mip.fr

EDMUNDS, W. Michael, Oxford University Centre for the Environment, Oxford University, South Parks Road, Oxford, OX1 3QY, United Kingdom, wme@btopenworld.com, wme@btopenworld.com

ZHU, Chen, Department of Geological Sciences, Indiana University, Bloomington, IN 47405 and SCHWARTZ, Franklin W., School of Earth Sciences, The Ohio State University, Columbus, OH 43210, chenzhu@indiana.edu, chenzhu@indiana.edu

JOHNSTON, Richard B.¹, BERG, Michael², TILLEY, Elizabeth¹, JOHNSON, C. Annette³ and HERING, Janet⁴, (1)Sandec - Department of Water and Sanitation in Developing Countries, Eawag - Swiss Federal Institute of Aquatic Science and Technology, Dubendorf, 8600, Switzerland, (2)Water Resources and Drinking Water, Eawag - Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, 7600, Switzerland, (3)Water Resources and Drinking Water, Eawag - Swiss Federal Institute of Aquatic Science and Technology, Dubendorf, 8600, Switzerland, (4)EAWAG, Überlandstrasse 133, P.O. Box 611, Dübendorf, 8600, Switzerland, richard.johnston@eawag.ch, richard.johnston@eawag.ch

GREGORY, Kelvin B.¹, VIDIC, Radisav² and DZOMBAK, David A.¹, (1)Civil & Environmental Engineering, Carnegie Mellon University, 119 Porter Hall, Pittsburgh, PA 15213, (2)Department of Civil and Environmental Engineering, University of Pittsburgh, 949 Benedum Hall, Pittsburgh, PA 15261, kelvin@cmu.edu, kelvin@cmu.edu

SIEGEL, Donald I., Earth Sciences, Syracuse University, Heroy Geological Laboratory, Syracuse, NY 13244, disiegel@syr.edu, disiegel@syr.edu