2011-02-15_REVISION - C1980004 (2)

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Corey Heaps McClane Canyon Mining, LLC February 15, 2011 Page 19 96. In the Structure Summary on page 30 and 35 of Appendix M, there are several structures with asterisks. The footnote on page 35 explains that these structures have incomplete design parameters. Please explain. 97. It appears that several revisions need to be made to Table 3.1 -1: • The side slopes for ditch R11 should be 1.5 instead of 2.0. Please revise accordingly. • The ditch depth for ditch D -R13 -1 should be 1.03 feet instead of 1.3 feet. Please revise accordingly. • The values for the right side slope and the left side slope need to be switched for ditches R17, R18 and R20. Please revise this table. • The side slopes for ditch R22 -b should be 6.0 instead of 2.0. Please revise accordingly. • The flow values for ditches R22 -a, R22 -b and R22 -c should be 11.4cfs, 38.3 cfs and 39.3 cfs respectively instead of the listed values of 17.5 cfs, 42.1 cfs and 43.1 cfs. Please revise these values. 98. It appears that Table 4.2 -12 needs a couple of revisions: • In Table 4.2 -12, it appears that the values for the right side slope and the left side slope for ditch D -20 have to be switched. If this is correct, please revise Table 4.2 -12 accordingly. • In Table 4.2 -12, it appears that the D50 value for ditch D -24b should be 9 inches instead of 12 inches. If this is correct, please revise Table 4.2 -12 accordingly. 99. It appears that there are several culverts listed in Table 4.2 -13 that do not have Sedcad design runs showing their peak flow calculations. These culverts are C -1 through C -4, C -8 through C- 11, C -13 and C -16 through C -18. Please provide these Sedcad designs or point out where in the submittal these designs are located. 100. It appears that several revisions need to be made to Figure 2.2 -3: • It does not appear that ditch D -10 is depicted on Figure 2.2 -3, although the label for this ditch is shown. If this is correct, please revise accordingly. • It does not appear that ditch D -27 is shown on Figure 2.2 -3. Please revise this figure if this is correct. • It does not appear that ditch D -36 is labeled on Figure 2.2 -3. If this is correct, please revise Figure 2.2 -3 accordingly.