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West Elk Mine <br /> <br />HydroGeo, Inc., Crested Butte, CO: <br /> Joe Frank, P.E., Principal <br /> <br />HydroGeology Solutions, Inc., Crawford, CO: <br /> Paul Holder, PG, President <br /> <br />Mayo and Associates, Salt Lake City, UT: <br /> Dr. Alan L. Mayo, Ph.D., Registered Geologist/Principal <br />Associated publications: <br />• Mayo, A.L., Morris, T.H., Peltier, S., Petersen, E.C., Payne, K., Holman, <br />L.S., Tingey, D., Fogel, T., Black, B.J., and Gibbs, T.D., 2004, Active and <br />inactive groundwater flow systems: Evidence from a stratified, <br />mountainous terrain; Geological Society of America, Bulletin, v. 115, p. <br />1456-1472. <br /> <br />• Mayo, A.L., and Koontz, W., 2000, Fracture flow and groundwater <br />compartmentalization in the Rollins Sandstone, Lower Mesaverde Group, <br />Colorado, USA: Hydrogeology Journal, v. 8. p. 430-446. <br /> <br />Mountain Coal Company, LLC, Somerset, CO: <br /> Ben Godwin, P.E., Mine Engineer <br /> Mark Peirce, P.E., Mine Engineer <br /> Cody Rapke, P.G., Mine Geologist <br /> Jessica Wilczek, P.E., Mining Engineer <br /> <br /> Wright Water Engineers, Inc., Denver & Glenwood Springs, CO: <br /> Kenneth R. Wright, P.E., Principal Engineer/CFO <br /> Jonathan Jones, CEO <br /> Jonathan M. Kelly, Vice President/ Sr. Water Resources Engineer <br /> Gary D. Witt, P.G., Vice President/Sr. Hydrogeologist/Geological Engineer <br /> C. Richard Dunrud, P.E., Engineering Geologist <br /> Ernest Pemberton, P.E., Adjunct Scientist, former Head of Sedimentation & River <br /> Hydraulics Section, U.S. Bureau of Reclamation <br /> E. Robert Weiner, Ph.D., Environmental Scientist <br /> Tetra Tech, Salt Lake City, UT: <br /> Michael Egan, P.G. Senior Geologist <br /> Chris Hayes, Geologist <br /> Tom Grey, Mine Engineer <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Government Agencies & Specialists Consulted: <br /> <br />2.03-3 Rev. 11/04- PR10; 03/06- PR10; 09/07- PR12; 10/08- PR14; 01/16- MR415; 03/17- MR421; 07/18- PR15; 01/22- MR459 <br /> <br />