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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 <br />Phone: (303) 866-3567 <br />FAX: (303) 832-8106 <br />February 10, 2010 <br />Kathleen G. Welt <br />Mountain Coal Company, LLC <br />P.O. Box 591 <br />Somerset, CO 81434 <br />Re: West Elk Mine (Permit No. C-1980-007) <br />Technical Revision No. 120 (TR-120) <br />Refuse Pile Expansion East <br />Dear Ms. Welt: <br />COLORADO <br />D I V I S I ON OF <br />RECLAMATION <br />MINING <br />SAFETY <br />Bill Ritter, Jr. <br />Governor <br />James B. Martin <br />Executive Director <br />We have completed a preliminary adequacy review of the above-referenced submittal, and have the <br />following comments. <br />1. We are waiting for verification from the State Historic Preservation Officer (SHPO) that the <br />proposed refuse disposal area on private land will not adversely affect a place that is listed on or is <br />eligible for listing on the National Register of Historic Places. This verification from the SHPO is <br />required by Rule 2.07.6(2)(e)(i). Should additional site surveys be necessary, the Division will <br />consider the possibility of approving TR-120 with the stipulation that the surveys and SHPO <br />clearance be provided before disturbance occurs. We requested verification from the SHPO in a <br />letter dated January 11, 2010. <br />2. Please extend the areas shown on Maps 54C and 54D southward so that all proposed new <br />disturbance is shown. <br />3. Please revise Map 54C to show details of the sediment and drainage control features so they are <br />consistent with those shown on Drawing C-13 of Exhibit 82, and use the same symbol scheme <br />and line weights as shown on Map 54C in the Main Surface Facilities Area. <br />4. Will the clean water ditches drain to the sediment control ponds as shown on Map 54C? <br />5. Please explain how the maximum pitch grade limit of 15 percent [Rule 4.03.1(3)(a)(iii)] will not <br />be exceeded, given the steep grades shown for haul road switchbacks on Map 53. <br />6. Please add a table to Exhibit 82 showing culvert design information for the haul road culverts. <br />Office of <br />Mined Land Reclamation <br />Denver • Grand Junction • Durango <br />Office of <br />Active and Inactive mines