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1111111111111111111 <br /> 999 STATE OF COLORADO <br /> DIVISION OF MINERALS AND GEOLOGY <br /> Department of Natural Resources P P r,W, <br /> 1 31 1 Sherman St, Room 215 <br /> Denver,Colorado 80203 <br /> Phone (101)866-3567 <br /> FAX (30 0 8 3 2-8106 <br /> DEPARTMENT OF <br /> NATURAL <br /> RESOURCES <br /> Roy Romer <br /> January 31, 1996 Governor <br /> James S Loc hhead <br /> Executive Director <br /> Mr. Bryce R. Romig /� Michael B Long; <br /> Climax Molybdenum Company (/ Division Director <br /> Climax Mine ff// <br /> Highway 91 <br /> Climax, CO 80429 <br /> RE: Robinson Seep Cut-Off Wall, Climax Mine, Permit No. M-77-693 <br /> Dear Mr. Romig: <br /> The Division has reviewed proposed modifications to the ground water cut- <br /> off wall currently under construction below Robinson Lake, and concurs <br /> with the plan to install a 24 inch wide concrete footer in those locations <br /> where bedrock is resistant to trenching of the previously approved keyway. <br /> Along the entire length of the cut-off wall the effectiveness of the <br /> installation hinges on the impervious nature of the bedrock. As such, if <br /> jointed or fractured bedrock is exposed, it must either be removed to <br /> expose competent bedrock, or further design modifications implemented to <br /> seal potentially transmissive fractures. Please contact the Division <br /> prior to pouring the footer so that an inspection of the prepared bedrock <br /> surface can be conducted. <br /> If you have any questions, please contact me. <br /> Sincerely, <br /> Allen C. Sorenson <br /> Reclamation Specialist <br /> C:\WP5I\CLIMAX.EPF <br />