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1111111111111111111 <br /> 999 STATE OF COLORADO <br /> IX DIVISION OF MINERALS AND GEOLOGY . <br /> Department of Nalural Re"" JPM, <br /> 1 31 3 Sherman Sl , Room 215 <br /> Denver,Colorado 8020 3 <br /> Phone (30 3)866-3567 <br /> fib\ M 0 832-8106 WM <br /> DEPARTMENT OF <br /> NATURAL <br /> RESOURCES <br /> /Ctober 14, 1996 Roy Romer <br /> Governor <br /> James S.Loehhead <br /> Mr. Bryce Romig / <br /> Y g / Executive Director <br /> Climax Molybdenum Company /1 Michael B Long <br /> Climax Mine Division Director <br /> Climax, CO 80429 <br /> RE: Dam Seep Water Return System Modifications, <br /> Climax Mine, Permit No. M-77-493 <br /> Dear Mr. Romig: <br /> The Division has completed a review of the design for modifications to the <br /> 4-Dam seep water return system. These modifications are subject to <br /> Division review because the 4-Dam seep water return system is an <br /> Environmental Protection Facility as defined in the Hard Rock/Metal Mining <br /> Rules and Regulations of the Mined Land Reclamation Board. <br /> The Division is not going to specifically address seepage control measures <br /> related to the routing of the seep water pipeline through 4-Dam because <br /> this aspect of the plan is subject to review by the State Engineer. <br /> However, the Division will require that additional detail be provided <br /> regarding that aspect of the plan whereby the gravel pipe bedding at each <br /> end of the 4-Dam embankment will be hydraulically connected. Please <br /> provide a detail drawing and sufficient narrative to describe how the <br /> hydraulic connection will be accomplished while providing reliable <br /> containment of seep water that may leak from the primary pipeline. <br /> No other concerns were identified in the Division' s review of the proposed <br /> plan, so once the details of the leak collection system passing through <br /> 4-Dam are reviewed and accepted by the Division, the project may proceed. <br /> A certification report will have to be review and accepted by the Division <br /> prior to initial utilization of the new seep water return system. <br /> If you have any questions, please contact me. <br /> Sincerely, <br /> Allen C. Sorenson <br /> Reclamation Specialist <br /> C:\WP51\CLIMAX.4DM <br />