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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 C O L O R A D O <br />Phone: (303) 866-3567 D t v t s t O N OF <br />FAX: (303) 832-8106 RECLAMATION <br />MINING <br />SAFETY <br />INTEROFFICE MEMORANDUM Bill Ritter, Jr. <br />Governor <br />James B. Martin <br />Executive Director <br />TO: Jim Stark <br />FROM: Mike Boulay P% <br />DATE: April 7, 2010 <br />SUBJECT: Elk Creek Mine Permit C-81-022, Technical Revision No. 68 <br />I am requesting your assistance in reviewing the bond liability cost estimate for Technical Revision <br />No. 68 (TR-68) for the Elk Creek Mine. The purpose of the TR is to construct a methane drainage <br />facility at the Elk Creek Fan Bench. This TR provides a plan for the installation of one steel cased <br />methane drainage borehole and construction of a twin electric driven methane exhauster system. <br />The application was deemed complete on March 29, 2010. <br />A complete copy of the technical revision is available for review in the Denver office..1 am sending <br />out an adequacy review letter next week. If possible, please provide your cost estimate to me by <br />April 14, 2010. Thank you for your assistance. <br />C: Sandy Brown <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and inactive Mines