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cp <br />Colorado <br />December 14, 2010 <br />Mr. Bob Oswald <br />State of Colorado <br />Division of Reclamation, Mining, and Safety <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Re: Permits: M-1981-114 Crader Pit (La Plata County-Operator) <br />M-1980-146 Montoya Pit (C&J Gravel-Operator) <br />Subj: Mining of boundary between Crader Pit and Montoya Pit <br />Dear Mr. Oswald, <br />EC 212010 <br />?i3MtiSW at ROGWWOM <br />M AIAI ow alA* <br />The operators of the two adjacent gravel pits named above are hereby jointly requesting <br />permission to mine the north/south boundary between these two gravel pits. This <br />boundary line lies along the bearing N89°03'27"W, and separates the south portion of the <br />recently permitted 15 acre Montoya Pit expansion from the existing North portion of the <br />Crader Pit Phase 1 excavation. <br />The intent is to remove all ridges and leave the two pits in a reclaimed condition where <br />no slope exists. The Crader Pit mining plan includes an existing 30 ft. set back from the <br />boundary location, which would be mined through to the boundary limit. The Montoya <br />Pit mining plan requires a 3:1 slope along this boundary. <br />The reason for the request is to obtain resources which would otherwise be unrecoverable <br />from a practical standpoint. Given the set-back and reclamation standards for both gravel <br />pits, as well as the depths of each pit, the un-mined berm or ridge which would otherwise <br />remain in place between the two pits along this boundary would result in significant loss <br />of usable gravel resources. This ridge would serve no other practical purpose and would <br />possibly hamper future long term development plans for the area. <br />The operators recognize that there may be differences in the elevations of each pit floor <br />and that there is the potential for causing slope instability and drainage issues due to <br />different mining schedules and processes. In the current configuration, Crader Pit has <br />been mined to an elevation approximately 10 ft. lower than Montoya Pit to the north. <br />This may or may not be the final configuration depending upon the depth of gravel <br />resources encountered, which vary greatly in this area. Regardless of the existing floor <br />vRnN