Laserfiche WebLink
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 /> <br />Phone: (303) 866-3567 IV IS ION OF <br />D IRECLAMATION <br />FAX: (303) 832-8106 MINING <br /> <br /> SAFETY <br /> Bill Ritter, Jr. <br /> Governor <br />INTEROFFICE MEMORANDUM <br /> Harris D. Sherman <br /> Executive Director <br /> Ronald W. Cattany <br /> <br />Date: 27 January 2009 Division Director <br /> Natural Resource Trustee <br />To: Michael P. Boulay <br />From: Marcia L. Talvitie, P.E.G%l!.G>/L v?°?LZ?ci <br />Subject: Permit No. C-2008-086 - Red Cliff Mine <br />Preliminary Adequacy Review - Engineering and Geotechnical <br />I have reviewed the information submitted to date by J. E. Stover & Associates on behalf <br />of CAM Colorado for the Red Cliff Mine north of Loma, Colorado. My comments are <br />provided below, for your consideration. <br />Rule 2.05.3 Operation Plan - Permit Area <br />2.05.3(3) Mine Facilities <br />On page 2.05-6, the gradient of Haul Road #3 is given as 6%. This correlates <br />with the information shown on.Map 16-2, but is contrary to the text on page 2.05- <br />21. Please review the pages mentioned, and revise as necessary. <br />2. On pages 2.05-6 and 2.05-21, the average gradient of Haul Road #4 is given as <br />5%. The profile depicted on Map 16-2 lists grades of 10%, 6% and 7%, which <br />seem to be contrary to the stated average gradient. Please review and compare <br />the text and profile, and revise the text as appropriate. <br />3. Item 5 on page 2.05-7 and the second paragraph on page 2.05-9 describe the <br />"Gob" pile. Please revise the text in each location to communicate that "Gob " is <br />equivalent to "Coal Mine Waste". <br />4. The rail system appears in plan view on Map 15-5, and is featured in Section H-H <br />on Map 19-2. However, no profile or typical section have been provided to <br />illustrate the dimensions of the railway, including width, thickness of ballast, <br />ditches, H:V proposed for the cut slopes, etc. Please provide a profile and typical <br />section for the portion of the rail system that lies within the permit area. <br />Office of <br />Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines