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W.A. Bear, Bowie Resources, LLC <br />4th Qtr 2013 CMWB Review <br />12- Feb -2014 <br />Page 2 of 2 <br />report, and specific data regarding pore pressures would be more informative. Please give the actual <br />pore pressure measured from each VWP, and address the results (and history) individually. <br />The final sentence of the second VWP paragraph says that all measured pore pressures are "well below" <br />the pore pressures at failure for similar confining pressures for the CU triaxial shear tests that have been <br />conducted. Please enhance this general statement by identifying the threshold at which the pore <br />pressure for each VWP installation might generate concern for the stability of the pile. <br />We have no further comments on the 4th Quarter Coal Mine Waste Bank Inspection and Instrumentation <br />Monitoring reports as submitted. If you have any questions or need additional information, please contact <br />me. <br />Sincerely, <br />Susan L. Burgmaier <br />Environmental Protection Specialist <br />cc: Jim Stover, J.E. Stover & Associates <br />Marcia Talvitie, DRMS <br />