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iiiiiiiiiiiiiiuiii <br />STATE OF COLORA~~ - <br />Roy Romer, Gove <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Director <br />January 12, 1989 <br />Mr. Dennis Conn <br />West Elk Coal Company <br />Box 591 <br />Somerset, Colorado 81434 <br />RE: Mt. Gunnison Flo. 1 Mine, File C-80-007 <br />Dear Mr. Conn: <br />After reviewing pages 42-45 of Volume 11 of the 1'It. Gunnison mining permit, it <br />is unclear to us if the collectors and diversions for the upper waste pile are <br />designed for a 100-year event. It is clear that they are designed for a <br />10-year event, and will pass a 100-year event. Therefore we believe no field <br />modifications will eb necessary. <br />Please submit updated designs for these ditches, showing the capability of <br />passing a 100-year event. <br />If you have any questions concerning this matter, please contact me or <br />Matt Hayes at the Division. <br />5ircerely, <br />~. . <br />Tim King <br />Physical Scientist,. <br />TK/scg <br />2587E <br />215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. (303) 866-3567 _ <br />