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C-1980-007 TR-118 <br />Geotechnical PAR - mlt <br />14-Sep-2009 <br />Page 2 of 2 <br />corroborated by data obtained during construction of another large coal mine refuse facility <br />in the North Fork valley. Moisture-density compaction testing was conducted during <br />construction of the Lower Refuse Pile. The in place unit weights so measured were <br />substantially greater than the design values reported in Exhibit SI of the permit. Please! <br />re-calculate the anticipated stability of the LRP using appropriate material characteristics, <br />as they were measured and reported during construction of the pile. <br />This concludes my preliminary adequacy review of TR-118. Please do not hesitate to contact me <br />with any questions you may have. <br />cc: Sandy Brown, DRMS <br />Dan Hernandez, DRMS