VENGOSH, Avner, Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC 27708, vengosh@duke.edu, WARNER, Nathaniel, Division of Earth and Ocean Sciences, Duke University, Old Chemistry Building, Durham, NC 27708, and JACKSON, Robert, Nicholas School of the Environment and Center on Global Change, Duke University, Box 90338, Durham, NC 27708

NICOT, Jean-Philippe, Bureau of Economic Geology, The University of Texas at Austin, 10100 Burnet Rd, Bldg 130, Austin, TX 78758-4445, jp.nicot@beg.utexas.edu

HITZMAN, Murray W., Chair, National Research Council Committee on Induced Seismicity Potential and Dept. Geology & Geological Engineering, Colorado School of Mines, Golden, CO 80401, mhitzman@mines.edu

BALDASSARE, Fred, 1229 Twelve Oaks Ct, Murrysville, PA 15668, fbaldassare@echelonagc.com, MCCAFFREY, Mark A., 3500 Oak Lawn Ave, Suite 205, Dallas, TX 75219, and HARPER, John A., Pennsylvania Geological Survey, 500 Waterfront Drive, Pittsburgh, PA 15222

DARRAH, Thomas¹, VENGOSH, Avner¹, JACKSON, Robert², WARNER, Nathaniel¹, and POREDA, Robert³, (1) Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC 27708, thomas.darrah@duke.edu, (2) Nicholas School of the Environment and Center on Global Change, Duke University, Box 90338, Durham, NC 27708, (3) Department of Earth & Environmental Sciences, University of Rochester, 227 Hutchison Hall, Rochester, NY 14627

MCINTOSH, Jennifer C., Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ 85721, mcintosh@hwr.arizona.edu

ENGELDER, Terry, Department of Geosciences, The Pennsylvania State University, 334A Deike Building, University Park, PA 16802, jte2@psu.edu

STEWART, Brian W.¹, CAPO, Rosemary C.¹, CHAPMAN, Elizabeth C.¹, HAMMACK, Richard W.², and SCHROEDER, Karl T.², (1) Department of Geology & Planetary Science, University of Pittsburgh, Pittsburgh, PA 15260, bstewart@pitt.edu, (2) National Energy Technology Laboratory, U.S. Department of Energy, Pittsburgh, PA 15236

BARBOT, Elise¹, VIDIC, Natasa S.², GREGORY, Kelvin B.³, and VIDIC, Radisav¹, (1) Department of Civil and Environmental Engineering, University of Pittsburgh, 949 Benedum Hall, Pittsburgh, PA 15261, vidic@pitt.edu, (2) Department of Industrial Engineering, University of Pittsburgh, 1032 Benedum Hall, Pittsburgh, PA 15261, (3) Civil & Environmental Engineering, Carnegie Mellon University, 119 Porter Hall, Pittsburgh, PA 15213