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III IIIIIIIIIIIII III <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1317 Sherman St., Room 215 <br />Denver, CO 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />April 30, 1993 <br />Mr. Ron Thompson <br />Senior Mine Engineer <br />Basin Resources, Inc. <br />14300 Highway 12 <br />Weston, CO 81091 <br />Re: New Elk Mine, Permit No. C-81-012, Basin Resources, Inc., <br />Approval for TR-25 Modifications. <br />Dear Mr. Thompson: <br />OF' COQ <br />,~~ - 4 <br />Me ,,~ <br />•'.~~~. <br />•'`...d <br />~ 1B]6 <br />Roy Rumer <br />Governor <br />Michael B. Long, <br />D rvis ion Director <br />The Division approves the proposed modifications to the approved designs for <br />containment Pond No. 1 and containment Pond No. 2. The Division also approves <br />the modification to the as-built for pond RDA-SW. <br />As per our telephone conversation of Thursday morning, April 29, 1993, there <br />seems to be discrepancies on the stage-capacity curves for the as-builts and <br />designs regarding the 25 year - 24 hour volume and the sediment storage <br />volume. These discrepancies, however, do not adversely affect the ability of <br />the ponds to contain the 25 year event. These stage-capacity curves may have <br />to be changed. <br />If you have any questions, please call me. <br />Sincerely, <br />d.~ <br />Joseph J. Dudash <br />Reclamation Specialist <br />JJD/amm <br />cc: Dan Hernandez, DMG <br />7341E <br />