2011-08-25_APPLICATION CORRESPONDENCE - C2010088

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Corey Heaps CAM Colorado LLC August 25, 2011 Page 2 In the August 19, 2011 submittal, CAM revised the permit text. However, please also revise the water depletion estimate in Section 2.04.11 on pages 2.04 -37 and 38 to include only the three proposed sediment ponds. 47.4 In the submittal dated April 12, 2011, the plan view drawings on Map 13 for ponds 1 and 2 were small and difficult to read. However, in the July 11, 2011 submittal, the plan view drawings on Figure 13 (Map 13 ?) are too small to read. Please submit new plan view drawings of each sediment pond, at a scale that is large enough to easily read the contour lines, contour intervals and elevations. Section 2.05.3(4)(a)(ii)(B) on permit pages 2.05 -19 and 2.05 -20 contains a description for the construction of pond embankments with discharge structures. However, referring to Map 13, revised in the August 19, 2011 submittal, it appears that ponds 1, 2 and 3 are completely incised, with no constructed embankment and no discharge structures. If all three ponds are completely incised with only pumped discharge, please revise Section 2.05.3(4)(a)(ii)(B) to describe the construction of the three incised ponds. 47.6 Please add more detail to the discussion of pond reclamation in Section 2.05.3(4)(a)(ii)(D) and, as was done for the topic of road reclamation, please add a reference in Section 2.05.4(2)(c) on page 2.05 -30 that a general discussion of the reclamation of the sediment ponds is presented in Section 2.05.3(4)(a)(ii)(D). In the August 19, 2011 submittal, CAM added additional information on pages 2.05 -20, 21 and 31. However, the Division requests an expanded discussion concerning pond reclamation, including where the fill will come from since the ponds will be incised, compaction of the fill material and whether or not topsoil will be applied. 47.10 Please change "V- Ditch" to "Trapezoidal" and 0.5% slope to 8.0% slope for ditch segment 3 -c in the Ditch and Culvert Design Summary on page Exh. 9 -2. In the August 19, 2011 submittal, "V- Ditch" was changed to "Trapezoidal" for ditch 3 -c. However, a slope of 0.8% is given for the ditch while the ditch design on page Exh. 9 -46 uses a slope of 8.0 %. Please reconcile this difference. NEW ITEMS — Aueust 2011 PAP Text A. Page 2.05 -16 describes the Light Use Roads. In the second paragraph, "from" is misspelled "form ", and I believe the road runs approximately 1,000 feet within the UP right -of -way. Please have CAM correct these two items. B. On page 2.05 -17, first paragraph, it might help clarify the intent to add the words, "from the east" following "Reed Wash ".