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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 255 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832.8106 <br />April 29, 2005 <br />Mr. Robert J. Phillips <br />Phillips Stone Company <br />7850 Ute Hwy <br />Longmont, CO 80503 <br />RE: Adequacy Review Comments, Phillips Stone Company, Ameudmeut No. 1 <br />Permit No. M-1981-075, Class: Revision Type-Seq.: AM-1 <br />Deaz Mr. Phillips: <br />COLORADO <br />DIVISION O F <br />MINERALS <br />GEOLOGY <br />REC LAMATION•MI NING <br />SAFf TY•SCIENCE <br />Bill Owens <br />Governor <br />Russell George <br />Executive DIleCfO! <br />Ronald W. Cat[any <br />Division Director <br />Natural Resource Trustee <br />Listed below are adequacy review comments on the above-captioned amendment application to <br />increase the permitted acreage and disturbance from 3.0 to 9.9 acres. The decision date for your <br />application is scheduled for May 23, 2005. Therefore, I would appreciate a response from you on <br />or before May 18, 2005. Any public comments that we receive on your application during the <br />interim will be forwarded to you. Please be advised that your amendment application maybe <br />deemed inadequate and maybe denied on May 23, 2005 unless the following adequacy review <br />items aze addressed to the satisfaction of the Division. <br />6.3.3 EXHIBIT C - Mininff Plan <br />Please clarify the maximum height of solid vertical rock walls to be left in place during mining <br />and final reclamation. <br />2. Please clarify the maximum volume of overburden to be on site, then backfilled during a time <br />of maximum disturbance. (Exhibit E -Reclamation Map specifies average thickness of <br />overburden replaced is about 2 - 6 feet). <br />3. Please clarify the highwall configuration(s) to be left during final reclamation. <br />6.3.4 EXHIBIT D -Reclamation Plan <br />4. Please clarify the estimated acreage to be re-vegetated during final reclamation. <br />Office of 0f8ce of Colorado <br />Mined Land Reclamation Active and Inactive Mines Geological Survey <br />