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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 />D I V I S I O N O F <br />Phone: (303) 866-3567 RECLAMATION <br />FAX: (303) 832-8106 MINING <br /> <br />May 29, 2009 SAFETY <br /> Bill Ritter, Jr. <br /> <br />Mr. Jim Stover, P.E. Governor <br /> <br />J.E. Stover & Associates, Inc. Harris D. Sherman <br />Executive Director <br />2352 North 7th Street <br />Unit B <br />, Ronald W. Cattany <br />Grand Junction, Colorado 81501 Division Director <br /> Natural Resource Trustee <br />Re: Munger Canyon Mine (Permit No. C-1981-020) <br />Portal Backfill Plan <br />Dear Mr. Stover: <br />The Division of Reclamation, Mining, and Safety (DRMS) has reviewed CAM Mining, <br />LLC's (CAM's) proposed portal backfill repair plan for the Munger Canyon Mine. The <br />DRMS noted the crack/opening at one of the portal entries during our Phase I bond <br />release inspection conducted on December 3, 2008 and requested that CAM repair the <br />sloughing at the former portal site. The DRMS reiterated our concem about the portal <br />opening in our May 13, 2009 complete inspection report and requested that CAM prepare <br />a plan to properly fill the opening in a manner that will prevent future surface collapse. <br />The DRMS has received CAM's proposed plan for repairing the portal entry in your <br />letter dated May 20, 2009. As proposed, Versa Foam System 15 will be sprayed into the <br />portal void. The outby section of the portal void will be filled with foam to provide a <br />back stop for dirt fill. The foam will be plated with nine to twelve inches of dirt and <br />rock. <br />CAM's portal backfill repair plan is hereby accepted. Please ensure that the work is <br />completed with minimal disturbance to established revegetation. As stated in your letter, <br />the repairs will be complete by the end of June 2009 or 30-days after plan approval. <br />Please call if you have any questions. <br />Sincerely, <br />"If <br />- 4-vil P. <br />Michael P. Boulay <br />Environmental Protection Specialist <br />C: Project File <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines