2010-06-03_REVISION - M1977211 - Laserfiche WebLink

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w 4'w` " Technical Revision Pikeview Quarry M-77-211 Castle Concrete Company May 2010 , //s- RECENE JUN 0, 2010 Division of kecr nation, Mining and Safety PURPOSE OF REVISION: To allow Castle Concrete to go back into the Pikeview Quarry for the purpose of investigating the geologic conditions within the permit boundary to better be able to formulate a comprehensive mining and reclamation amendment. In June of 2009 The Maine Land Reclamation Board issued a Cease and Desist Order with regard to any mining within the affected slide area of the Pikeview Quarry. Since the landslide in December of 2008 the slopes within the Pikeview Quarry continue to be very unstable. The Mine Land Reclamation Board granted a one year extension of their Board Order of June 2009 requiring Castle Concrete to submit a new amendment to the above referenced permit by May of 2010. This extension was granted based on the inability of Castle Concrete to be able to conduct a. thorough investigation due to the fact that numerous areas within the quarry are moving and unable to be examined as to the best way to reclaim the quarry in its current condition. REASON FOR REVISION: Castle Concrete was in the process of mining and reclaiming the Pikeview Quarry under the above referenced permit at the time of the original slide in 2008 (See Exhibit 1). In December of 2008 a landslide occurred at the Pikeview Quarry, located in northwest Colorado Springs, Colorado (See Exhibit 2). In June of 2009 the Mine Land Reclamation Board issued a Cease and Desist order against Castle Concrete Company suspending its ability to continue operation. In the Board Order, Castle was also to prepare a new mining and reclamation plan for the Pikeview Quarry in the form of an amendment to the current mining and reclamation plan. The order called for the amendment to be submitted to the DRMS no later than May of 2010. As was previously stated, a one year extension was requested and approved by the Board to allow Castle Concrete to fully investigate the geologic conditions and the best approach to deal with them in the new amendment. In cooperation with the DRMS, Castle Concrete installed a Lieca monitoring system within the quarry to monitor the landslide (See Exhibit 3). In September of 2009 a second landslide occurred (See Exhibit 4). Portions of the southern and middle sections of the quarry continue to move and are unstable while other areas of the middle and north end of the quarry appear much more stable and currently are not moving. On