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1111111111111111111 <br /> 999 <br /> STATE OF COLORADO <br /> DIVISION OF MINERALS AND GEOLOGY <br /> Department of Natural Resources °F_C--o" <br /> 1313 Sherman St., Room 215 ,-D 0; <br /> Denver,CO 80203 + �+ <br /> Phone:(303)866-3567 \*-1876 "" <br /> FAX:(303)832-8106 <br /> Roy Romer <br /> Governor <br /> Michael B Long <br /> Ugust 3 0, 1993 Division Director <br /> M Larry Perino <br /> nnyside Gold Corporation <br /> P.O. Box 177 <br /> Silverton, CO 81433 / <br /> RE: .Partial Approval, TR-014 , File No. M-77-378 <br /> Dear Mr. Perino: <br /> On July 27, 1993 , the Colorado Division of Minerals and Geology <br /> granted partial approval of technical revision TR-014 submitted on <br /> March 22 , 1993 , to allow installation of the Brenneman-Sunnyside <br /> connection bulkheads. As conditions to the partial approval, the <br /> Division will require that: <br /> 1 . Long-sections of the cleaned and scaled bulkhead locations be <br /> prepared, and that the locations demonstrate sufficient <br /> irregularity to cause concrete shear strength to be the <br /> controlling shear parameter for bulkhead performance. If <br /> tunnel wall irregularity is not sufficient at any location, <br /> design details will have to be submitted and approved, that <br /> will increase shearing resistance. <br /> 2 . The downstream ends of the bulkheads will be located to <br /> coincide with inward tapering tunnel dimensions. <br /> If you have any questions, please contact me. <br /> Since ely, <br /> Allen C. Sorenson <br /> Reclamation Specialist <br />