HIBBS, Barry J. and HU, Wynee, Geological Sciences, California State University, Los Angeles, 5151 State University Drive, Los Angeles, CA 90032, bhibbs@calstatela.edu, bhibbs@calstatela.edu

KELLY, Walton R.¹, PANNO, Samuel V.² and HACKLEY, Keith C.², (1)Institute for Natural Resources Sustainability, Illinois State Water Survey, University of Illinois, 2204 Griffith Drive, Champaign, IL 61820, (2)Illinois State Geological Survey, University of Illinois, 615 E. Peabody Drive, NA, Champaign, IL 61820, wkelly@illinois.edu, wkelly@illinois.edu

KAUFMAN, Martin, The University of Michigan-Flint, 516 Murchie Science Building, Flint, MI 48502, MURRAY, Kent, Earth Science Department, University of Michigan, Dearborn, 4901 Evergreen Road, Dearborn, MI 48128 and ROGERS, Daniel, Amsted Industries, 180 Stetson, Suite 1800, Chicago, IL 60601, martyk@umich.edu, martyk@umich.edu

HON, Rudi, Earth and Environmental Sciences, Boston College, 140 Commonwealth Ave, Chestnut Hill, MA 02467, XIE, Yu, Geology & Geophysics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, TEDDER, Newton, Geology & Geophysics, Boston College, 140 Commonwealth Ave, Chestnut Hill, MA 02467 and COEFER, Josh, Earth & Environmental Sciences, Boston College, 140 Commonwealth Ave, Chestnut Hill, MA 02467, hon@bc.edu, hon@bc.edu

ABSHIRE, Kate E. and HERMAN, Janet S., Dept. of Environmental Sciences, University of Virginia, P.O. Box 400123, Charlottesville, VA 22904-4123, kea8r@virginia.edu, kea8r@virginia.edu

SIMPKINS, William W., Department of Geological and Atmospheric Sciences, Iowa State University, 253 Science I, Iowa State University, Ames, IA 50011, bsimp@iastate.edu, bsimp@iastate.edu

HAYS, Phillip D., Department of Geosciences, University of Arkansas, 113 Ozark Hall, Fayetteville, AR 72701, BOLYARD, Susan Elizabeth, U.S. Geological Survey, Arkansas Water Science Center, 700 W. Research Center Blvd, MS36, Fayetteville, AR 72701, HAUSMANN, Sonja, Geosciences, University of Arkansas, Fayetteville, AR 72701 and VARDY, Renee L., Geosciences, University of Arkansas, 113 Ozark Hall, University of Arkansas, Fayetteville, AR 72701, rvardy@uark.edu, rvardy@uark.edu

MAYO, Alan L.¹, RITTER, Daniel², BRUTHANS, Jiri³ and TINGEY, David¹, (1)Geological Sciences, Brigham Young University, Provo, UT 84602, (2)Geology, Brigham Young University, S-389 ESC, Provo, UT 84602, (3)Faculty of Science, Charles University in Prague, Prague, 2, Czech Republic, alan_mayo@live.com, alan_mayo@live.com

BRADBURY, Kenneth R.¹, BORCHARDT, Mark A.², GOTKOWITZ, Madeline B.³, HUNT, Randy⁴ and SPENCER, Susan K.², (1)Wisconsin Geological and Natural History Survey, University of Wisconsin-Extension, Madison, WI 53705, (2)USDA-Agricultural Research Service, 2615 Yellowstone Drive, Marshfield, WI 54449, (3)Wisconsin Geological and Natural History Survey, 3817 Mineral Point Rd, Madison, WI 53705, (4)Wisconsin Water Science Center, USGS, 8505 Research Way, Middleton, WI 53562, krbradbu@wisc.edu, krbradbu@wisc.edu

GELLASCH, Christopher A., Department of Geoscience, University of Wisconsin, 1215 W. Dayton St, Madison, WI 53706, BRADBURY, Kenneth R., Wisconsin Geological and Natural History Survey, University of Wisconsin-Extension, Madison, WI 53705, BAHR, Jean M., Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706, BORCHARDT, Mark A., USDA-Agricultural Research Service, 2615 Yellowstone Drive, Marshfield, WI 54449 and ALEXANDER Jr., E. Calvin, Department of Earth Sciences, University of Minnesota, 310 Pillsbury Dr. SE, Minneapolis, MN 55455, gellasch@wisc.edu, gellasch@wisc.edu

HSU, Kenneth J., Center for Health and Environmental Engineering, Henan University, Kaifeng, China and DICKSON, Frank W., Geological Sciences and Engineering, University of Nevada, Reno, NV 89557, kenjhsu@aol.com, kenjhsu@aol.com