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Rob Zuber <br />Page 5 <br />March 10, 2016 <br />Please change the footer to refer to PR -04 throughout. <br />The footers have been corrected. <br />The response is sufficient. <br />72. In Volume 15, Rule 2, Page 14, it is stated that "The stratigraphic thickness of the Williams Fork <br />Formation in the Colowyo revised permit area is about 1,700 feet." Later, on Page 19, it is stated <br />that "The overlying Williams Fork Formation consists of up to about 1,200 ft of alternating beds <br />of sandstone, sandy shale, mudstone, and coal." <br />Please resolve the apparent inconsistency concerning the thickness of the Williams Fork <br />Formation, (see also Rule 2, Page 21). <br />The text of Volume 15, Rule 2 has been revised so that references to the thickness of the <br />Williams Fork formation are consistent (approximately 1,700 feet). <br />The response is sufficient. <br />73. Two faults are described in Volume 15, Rule 2, Page 21, but are not shown on Map 7A (or Map <br />1013). <br />Please draw the faults on Maps 7A and 10B. Please also update the text of section 2.04.6 to <br />include a description of these faults. <br />This item has not yet been adequately addressed. <br />CCC have retained discussion of faulting in Morgan Gulch on Page 15, and removed the text <br />discussing faults from Page 21, in the proposed revised text, rather than expanding other <br />sections to more fully describe these faults. Two references are cited in the text that CCC <br />proposes to remove: Reheis, 1981; and Dodd and Dodd Consulting, 2006. The first of these is <br />readily available to the public however the second is not. Please provide a copy of the <br />referenced report so that the Division may better evaluate the significance of faulting in the <br />Collom area. Please also show the faults in Morgan Gulch on Map 7A. <br />74. Under the subheading "Groundwater Occurrence", in Volume 15, Rule 2, Page 21, the text refers <br />to bedrock and valley fill monitoring wells relevant to PR -4 presented in Table 2.04.7-38. This <br />table contains 34 wells, whose locations are mapped on Map 1013. Several questions relate to <br />the table: <br />a. The MWC-04-05 wells are marked on the map as MWC-04-05FS and MWC-04-05FG. The <br />table also has a MWC-04-05H, but this is not shown on the map. Please clarify and <br />update either the map or the table accordingly. <br />CCC added an explanatory note to Table 2.04.7-38, and updated Map 10B. <br />The response is sufficient. <br />