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STATE OF COLORADO - <br />rU?} DIVISION OF RECLAMATION, MINING AND SAFETY <br />f Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />April 11, 2008 <br /> <br />Bill Ritter, Jr. <br />Governor <br />Harris D. Sherman <br />Executive Director <br />Christy Woodward Ronald W. Cattany <br />Division Director <br />Denison Mines (USA) Corp. Natural Resource Trustee <br />1050 17th Street, Suite 950 <br />Denver, CO 80265 <br />V <br />I/ '? ? <br />Re: West Sunday Mine, Permit M-1981-021, Technical Revision TR-5, Preliminary Adequacy <br />Review. <br />Dear Ms. Woodward, <br />I have reviewed the technical revision request submitted to this office on March 14, 2008, regarding <br />the new topsoil stockpile. At this time there are a few questions that must be answered before this <br />office may consider approving the technical revision. Please provide adequate responses to the items <br />listed below. <br />1. What is the approximate present volume of topsoil in the new topsoil pile? <br />2. What is the configuration of the stockpile, such as side slope gradient and height? <br />3. How will potential water erosion of the topsoil be controlled, such as seeding? If seeding is <br />planned, please provide the seeding specifications. <br />4. How will sediment transport from the stockpile be controlled, such as use of silt fence? <br />5. Is more topsoil anticipated to be added to the stockpile in the future? If so, please describe the <br />anticipated stockpile configuration, such as area and height. If more topsoil is anticipated to be <br />generated, but not placed in this stockpile area, where will future topsoil be placed? <br />6. Is there a specific portion of the affected area where the topsoil in this pile will be respread during <br />final reclamation? If so, please describe it and also depict it on a revised reclamation map. <br />This office is pleased that Denison is carefully salvaging topsoil to enhance its future reclamation, <br />during its present mining operations. However (and this should not be interpreted to unduly punish <br />Denison for the extra reclamation efforts of topsoil salvage) this office may recalculate the bond <br />amount to account for a larger topsoil replacement task. If there is a significant difference, I will send <br />you the figures for review. <br />COLORADO <br />D I V I S I O N O F <br />RECLAMATION <br />MINING <br />SAFETY <br />Office of Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines