CORBETT, Matthew, Department of Earth and Atmospheric Sciences, University of Nebraska Lincoln, 214 Bessey Hall, Lincoln, NE 68583, LOWERY, Christopher M., Institute for Geophysics, University of Texas, JJ Pickle Research Campus, Bldg 196, 10100 Burnet Rd, Austin, TX 78758, MICELI ROMERO, Andrea, College of Earth and Energy, University of Oklahoma, 100 E. Boyd St, Norman, OK 73019, WATKINS, David K., Department of Earth & Atmospheric Sciences, University of Nebraska, 214 Bessey Hall, Lincoln, NE 68588-0340, LECKIE, R. Mark, Department of Geosciences, Univ of Massachusetts, 611 North Pleasant Street, Amherst, MA 01003, LI, Weiguo, BP, 501 Westlake Park Blvd, Houston, TX 77079, PRAMUDITO, Aris, North America Gas, BP America Inc, 501 Westlake Park Blvd, Houston, TX 77079, DONOVAN, Art, North American Gas, BP America, 501 Westlake Park Blvd, Houston, TX 77079 and STAERKER, Scott, EPT, BP America Inc, 501 Westlake Park Blvd, Houston, TX 77079, mcorbett@huskers.unl.edu, mcorbett@huskers.unl.edu