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Corey Heaps <br />CAM Colorado LLC <br />August I0, 2011 <br />Page 9 <br />4) In the submittal dated April 12, 2011, the plan view drawings on Map 13 for <br />ponds 1 and 2 were small and difficult to read. However, in the July 11, 2011 <br />submittal, the plan view drawings on Figure 13 (Map 13 ?) are too small to read. <br />Please submit new plan view drawings of each sediment pond, at a scale that is <br />large enough to easily read the contour lines, contour intervals and elevations. <br />5) There appears to be an inconsistency as to what sediment control structures will <br />be constructed alongside the railroad spur line. The Map 21 plan view appears to <br />show berms in place but, the cross - section B -B' shows that ditches will be next to <br />the railroad track. However, on Map 16 and Figure 13 (Map 13 ?), there appear <br />to be ditches on both sides for only part of the spur line. Please explain or revise <br />the maps so that there is consistency among these maps. <br />6) Please add more detail to the discussion of pond reclamation in Section <br />2.05.3(4)(a)(ii)(D) and, as was done for the topic of road reclamation, please add <br />a reference in Section 2.05.4(2)(c) on page 2.05 -30 that a general discussion of the <br />reclamation of the sediment ponds is presented in Section 2.05.3(4)(a)(ii)(D). <br />7) There are two short purple line segments shown along the railroad loop on Figure <br />13 (Map 13 ?), Map 16 and Map 21, one between track locations 53 +00 and 64 +00 <br />and one between track locations 106 +00 and 110 +00. Please explain and add their <br />designations to the map legends or remove these lines. <br />8) Please update Section 2.05.6(b)(i) on permit text page 2.05 -54 to reflect that there <br />are three ponds and one SAE in the current sediment control plan. <br />9) Please change 20% slope to 0.2% slope for ditch 1 -d in the Ditch and Culvert <br />Design Summary on page Exh. 9 -2. <br />10) Please change "V- Ditch" to "Trapezoidal" and 0.5% slope to 8.0% slope for ditch <br />segment 3 -c in the Ditch and Culvert Design Summary on page Exh. 9 -2. <br />11) Please consider adding the bottom width for each trapezoidal ditch in the Ditch <br />and Culvert Design Summary on page Exh. 9 -2. <br />12) It appears that old Map 13 and Map 14 need to be deleted and the reference to <br />Maps 13 and 14 on revised page 2.05 -18 and the Table of Contents for Volume 11 <br />revised accordingly, if appropriate. <br />13) Please label ditches 1 -f and 1 -g on Figure 13 (Map 13 ?). <br />14) Please add the label for ditch 3 -c on Map 16. <br />