BEELER, Scott, BRANNEN, Kathleen, and ENGEL, Annette Summers, Dept. of Earth and Planetary Sciences, University of Tennessee, 1412 Circle Dr, Knoxville, TN 37996, sbeeler4@utk.edu

BEKER, Hannah, Shippensburg, PA 17257, hb4287@ship.edu

KNIERIM, Katherine J., Environmental Dynamics, University of Arkansas, 113 Ozark Hall, Fayetteville, AR 72701, Katherine.Knierim@gmail.com, POLLOCK, Erik D., University of Arkansas Stable Isotope Laboratory, University of Arkansas, 116 Ferritor Hall, Fayetteville, AR 72701, and HAYS, Phillip D., Arkansas Water Sciences Center, U.S. Geological Survey, 700 W. Research Center Blvd, Fayetteville, AR 72701

NEDVIDEK, Daniel, Geography and Geology, Western Kentucky University, 1906 College Heights Blvd, Bowling Green, KY 42101, daniel.nedvidek@topper.wku.edu, POLK, Jason, WKU Hoffman Environmental Research Institute/Dept. Geog & Geol, 1906 College Heights Blvd. #31066, Bowling Green, KY 42101, SLATTERY, Tim, Department of Public Works, City of Bowling Green, Kentucky, Bowling Green, KY 42101, and NORTH, Leslie, Hoffman Environmental Research Institute, Department of Geography and Geology, Western Kentucky University, 1906 College Heights Blvd, Bowling Green, KY 42101

FEENEY, Thomas P., Geography & Earth Science, Shippensburg University, 1871 Old Main Dr, Shippensburg, PA 17257, tpfeen@ship.edu

ZHANG, Ya, Civil and Environmental Engineering, University of Illinois, 4123 Newmark Civil Engineering Laboratory, 205 N. Mathews Ave, Urbana, IL 61801, zayayalisa@gmail.com, KELLY, Walton R., Illinois State Water Survey, Prairie Research Institute, University of Illinois, 2204 Griffith Drive, NA, Champaign, IL 61820, LIU, Wen-Tso, Civil and Environmental Engineering, University of Illinois, 3207 Newmark Civil Engineering Laboratory, 205 N. Mathews Ave, Urbana, IL 61801, and PANNO, Samuel V., Illinois State Geological Survey, Prairie Research Institute, University of Illinois, 615 E Peabody Dr, Champign, IL 61820

PHIPPS, Jacob D., Department of Chemistry and Applied Biological Sciences, South Dakota School of Mines and Technology, 501 E St.Joseph St, Rapid City, SD 57701, jacob.phipps@mines.sdsmt.edu, LAQUA, Alexa J., College of Engineering and Mines, University of North Dakota, Upson 2, Room 165, stop 8155, 243 Centennial Dr, Grand Forks, ND 58202, and ALEXANDER, E. Calvin Jr, Department of Earth Sciences, University of Minnesota, 310 Pillsbury Dr. SE, Minneapolis, MN 55455

GAO, Yongli, Geological Sciences, University of Texas at San Antonio, San Antonio, TX 78249, yongli.gao@utsa.edu and LEI, Mingtang, Institute of Karst Geology, CAGS, 50 Qixing Rd, Guilin, 541004, China

SPELLMAN, Patricia¹, GRIFFIS, Veronica¹, GULLEY, Jason², MANKOFF, Ken³, and BROWN, Amy L.⁴, (1) Department of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Dr, Houghton, MI 49931, pdspellman@gmail.com, (2) Geological Mining and Engineering Sciences, Michigan Technological University, 1400 Townsend Dr, Houghton, MI 49931, (3) Earth and Planetary Sciences, University of California Santa Cruz (UCSC), 1156 High Street, Santa Cruz, CA 95060, (4) Department of Geological Sciences, University of Florida, 241 Williamson Hall, Gainesville, FL 32611