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TABLE 1 COORS ENERGY COMPANY KEENESBURG MINE <br />SEDIMENTOLOGY EVALUATION <br />CDRMS PHASE II BOND RELEASE 2010 SLOPE CHARACTERISTICS <br />PAGE 1 <br />CROSS SECTION ELEVATIONS ELEVATION O (ft) XS LENGTH (ft) % SLOPE SLOPE L (deg) <br />2-2' 4786-4778 8 400 2.0 1.15 <br />5-5' 4784-4783 1 200 0.5 0.29 <br />6-6'A 4806-4790 16 1000 1.6 0.92 <br />6-6' B 4790-4784 6 1000 0.6 0.34 <br />7-7' 4790-4789.5 0.5 500 0.1 0.06 <br />9-9' 4836.5-4806 30.5 700 4.4 2.49 <br />10-10'A 4808-4796 12 200 6.0 3.43 <br />10-10'13 4820-4815 5 600 0.8 0.48 <br />15-15' 4828-4824 4 750 0.5 0.31 <br />16-16' 4820-4814 6 540 1.1 0.64 <br />19-19' 4810-4794 16 600 2.7 1.53 <br />23-23' 4805-4804 1 200 0.5 0.29 <br />29-29' 4823-4812 11 800 1.4 0.79 <br />IF mean 9.00 576.15 1.71 0.98 <br />NATIVE B-B' (east) 4800-4770 30 2000 1.5 0.86 <br />NATIVE C-C' (north 4770-4760 10 2000 0.5 0.29 <br />NATIVE D-D' (west) 4860-4820 40 2000 2.0 1.15 <br />meanl i 1 1 26.67 2000.00 1.33 0.76