Leslie Dumas, P.E., Woodard & Curran, Sacramento, CA

Douglas Hallum, P.G., Conservation and Survey Division, School of Natural Resources, University of Nebraska - Lincoln, North Platte, NE

S Andrew McGuire, Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI

Vincent White, Lower Mississippi-Gulf Water Science Center, United States Geological Survey, Baton Rouge, LA

Thad Kuntz, PG, Adaptive Resources Inc., Scottsbluff, NE

James Schneider, Ph.D., Brian Dunnigan, PE, Colby Osborn and Mallory Morton, Olsson Associates, Lincoln, NE

David S. Gould, P.E.¹ and William Greg Hamer, CHG, CEG², (1)Engineering, Crescenta Valley Water District, La Crescenta, CA, (2)AMEC, Irvine, CA

Andrew Stone, American Ground Water Trust, Concord, NH

Michael Grzybowski¹, Melissa Lenczewski, Ph.D.², Yee Yee Oo³ and Luis Marin⁴, (1)Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, IL, (2)Northern Illinois University, DeKalb, IL, (3)Physics, Mandalay University, Mandalay, Myanmar, (4)Instituto de Geofisica, Universidad Nacional Autonoma de Mexico, Mexico, Mexico

William Greg Hamer, CHG, CEG, AMEC, Irvine, CA

Fran Kremer, PhD¹, James Weaver, Ph D² and Andrew Murray³, (1)ORD, USEPA, Cincinnati, OH, (2)Office of Research and Development, U.S Environmental Protection Agency, Ada, OK, (3)ORISE, CIncinnati, OH

Todd Giddings, Ph.D., PG, Todd Giddings and Associates Inc., State College, PA

Javier Vilcaez, Geology, Oklahoma State University, Stillwater, OK

Yu-Feng Lin, Ph.D., P.G., GISP¹, Yingchun Ge, Ph.D.² and Andrew Stumpf, Ph.D., P.G.³, (1)Illinois State Geological Survey-Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL, (2)Northwest Institute and Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, (3)Illinois State Geological Survey-Prairie Research Institute, Universty of Illinois at Urbana-Champaign, Champaign, IL