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DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866 -3567 <br />FAX: (303) 832 -8106 <br />September 17, 2013 <br />Danielle Wiebers <br />Pete Lien & Sons, Inc. <br />P.O. Box 440 <br />Rapid City, SD 57709 <br />STATE OF COLORADO <br />COLORADO <br />D I V I S ION OF <br />RECLAMATION <br />MINING <br />SAFETY <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Loretta E. Pineda <br />Director <br />RE: Rex Quarry — Sec 36; DRMS File No. M- 1977 -304; Technical Revision No. 6; Adequacy <br />Review No. 1 <br />Dear Ms. Wiebers, <br />The Division of Reclamation, Mining and Safety (Division) received Technical Revision — 6 <br />(TR -06) for the above referenced site on August 30, 2013. The decision date for this application <br />is September 29, 2013. The Division has reviewed the TR -06 proposal and has the following <br />comments. <br />1. Please provide the associated acreage for each of the mining /reclamation phases. <br />2. The map which was submitted with TR -06 includes both the Rex Quarry and the Owl <br />Canyon Quarry. This map serves as a good reference to illustrate the connection between the <br />two sites; however, the Applicant must provide a revised Mining Plan Map which solely <br />depicts the Rex Quarry. The map must conform to the following criteria: <br />a) Map scales shall not be larger than 1 inch = 50 feet, nor smaller than 1 inch = 660 feet. <br />b) The map shall contain the name of the operation (Rex Quarry -Sec 36). <br />c) The permit boundary must be labeled and clearly identified on the map. <br />3. Please specify if the reclamation plan, aside from the sequence of the phases, will change in <br />any way. If any portion of the reclamation plan will change, such as the final grade or areas <br />where highwalls will remain, then a revised Reclamation Plan Map must be submitted for <br />review. <br />4. The submitted map depicts the `PLS Boundary' which appears to coincide with the limits of <br />Section 36. The permit boundary must depict the 400 acre permit boundary for the Rex <br />Quarry. <br />5. The areas west of Backfill Area 1 and 2, which include the plant site and Robert's Road, <br />have not been included in any of the reclamation phases. Is there any backfilling required in <br />these areas? In addition, please identify the plant, office and shop on the revised map. <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines <br />