Xin Song, Ph.D. and Zhihao Hu, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China

Audrey Levine, Ph.D., P.E., BCEE¹ and Shafick Adams, Pr.Sci.Nat. FGSSA², (1)National Science Foundation, Garrett Park, MD, (2)Water Research Commission, Pretoria, South Africa

Graeme Bowles, P.G.¹, Robert Schreiber, PE, BCEE, D.WRE², Stefania Hurtado³ and Sonya Cadle, P.G.⁴, (1)Tetra Tech, Inc., Tampa, FL, (2)Water Resources, CDM Smith, (3)Civil Engineering, Northeastern University, Boston, MA, (4)Tetra Tech, Louisville, CO

Rod Sheets¹, Janice Fulford, Dr.², William L. Cunningham³ and James Dubuisson, Dr.⁴, (1)Department of Interior, US Geological Survey, (2)Dept. of Interior, US Geological Survey, Stennis Space Center, MS, (3)Office of Groundwater, U.S. Geological Survey, Reston, VA, (4)Department of Interior, U.S. Geological Survey, Stennis Space Center, MS