1. School of Geology and Geophysics, University of Oklahoma, 100 E. Boyd Street, SEC 710,
Norman, Oklahoma 73019, United States
2. National Risk Management Research
Laboratory, Ground Water and Ecosystems Restoration Division, U.S. Environmental Protection Agency, 919 Kerr Research
Drive, Ada, Oklahoma 74820, United States
3. R.S. Kerr Environmental Research
Laboratory, National Research Council,
919 Kerr Research Drive, Ada, Oklahoma 74820, United States