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.- <br />III IIIIIIIIIIIIIIII <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Duparlmem of Nalu ral Resources <br />1117 Sherman 8t., Room ?15 <br />Denver, Colorado 80203 <br />Phone: (3071 855-35fi7 <br />FA%: (}0)I 832-8106 <br />June 9, 1999 <br />James A. Kilter <br />Colowyo Coal Company L.P. <br />>731 State Highway 13 <br />Meeker, Colorado 81641 <br />Subject: Technical Adequacy, Technical Revision 48, Permit C-81-O19 <br />Deaz Mr. Kilter: <br />An adequacy review of the subject revision has been completed. Please confirm, modify the <br />submission, or clazify the instructions of the cover letter as itemized below. <br />Ttem 1: Page 2.05-36 Line 9 of the submission. "Approximately 40.0 million ..." should read <br />"Approximately 45 million ...". <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />R E C L A M A T I O N <br />MINING•SAFETY <br />gill Owens <br />Governor <br />Greg E watcher <br />Executive DveUOr <br />Michael B. Long <br />Division Dueaor <br />Instructions on page 2 of your submittal cover letter [Colowyo Coal Company L.P. (Colo~ryo) <br />letter of May 7, 1999] are to replace like pages in Volume 2D, Exhibit 7, Hydrology Information. <br />In this regazd: <br />Item 2. AutoCAD File WPTCHNSMDWG would be replaced. Please add a revision line to this <br />drawing and provide the Division with copies that are legible (copies received are blurred) in the <br />lower left corner areas. <br />The SEDCAD 4.0 Utility Runs for the West Pit Ditch Sta. 32 to 69: Q=102.4, for 1%, 7% and 8% <br />will be exchanged. <br />Item 3. The SEDCAD 4.0 run for the West Pit Ditch Sta. 32 to 69: Q=102.4 for a slope of 12.0% <br />would appear to remain. <br />Item 4. The SEDCAD 4.0 runs for the West Pit Ditch Sta 32 to 69: Q=102.4 for slopes of 14%, <br />15% and 20% appear to be additions. <br />Item 5. AutoCAD File ETCHNSMDWG would be replaced. Please add a revision line to this <br />drawing and provide the Division with copies that are legible (copies received are blurred) in the <br />lower left corner areas. <br />The SEDCAD 4.0 Utility Runs for the Taylor Tributary Ditch Sta. 0 to 65: Q=185.0 fur 5.0% and <br />10.0% are to be exchanged for those runs from 0 to 62. <br />