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Mr. Zach Trujillo <br />November 20, 2015 <br />Page 9 <br />ITEM 71. In volume 1, some of the footer information gives the permitting action revising those pages as <br />PR -06. Please change the footer to refer to PR -04 throughout. <br />Response: The footers on submitted pages for Volume I have been revised to PR -04 as requested. <br />ITEM 72. In Volume 15, Rule 2, Page 14, it is stated that "The stratigraphic thickness of the Williams <br />Fork 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 feet of alternating beds of <br />sandstone, sandy shale, mudstone, and coal." Please resolve the apparent inconsistency concerning the <br />thickness of the Williams Fork Formation, (see also Rule 2, Page 21). <br />Response: The reference to the estimated thickness of the Williams Fork Formation in the Collom Mine <br />area on Rule 2, page 19 and 21 has been revised for consistency. <br />ITEM 73. Two faults are described in Volume 15, Rule 2, Page 21, but are not shown on Map 7A (or <br />Map 1013). Please draw the faults on Maps 7A and 1013. Please also update the text of section 2.04.6 to <br />include a description of these faults. <br />Response: There are no known major faults as described in Volume 15, Rule 2, Page 21. Therefore; the <br />entire paragraph has been removed. As noted in Exhibit 6, Item 7, page i, "No discernable faults have <br />been identified across the CMA [Collom Mine Area] ", and in Volume 15, Rule 2, Page 15, "No faults <br />have been identified in the Collom mine area ". <br />ITEM 74. Under the subheading "Groundwater Occurrence", in Volume 15, Rule 2, Page 21, the text <br />refers 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 the table: <br />a. The MWC-04-05 wells are marked on the map as MWC-04-05FS and MWC-04-05FG. The table <br />also has a MWC-04-05H, but this is not shown on the map. Please clarify and update either the map <br />or the table accordingly. <br />b. The map shows a well that is marked C-04-16. The table shows a well named C-04-1613. Please <br />clarify. <br />c. The map shows a well that is marked MWC-05-33. This well is not in the table. Please clarify. <br />d. The table contains 11 wells that are named "DHxxx." None of these are shown on the map. Please <br />clarify. <br />Response: A response for this comment will be submitted at a later date under a separate cover letter. <br />ITEM 75. Completion information for the monitoring wells was not readily located. Please refer, in the <br />text or as a footnote to table 2.04.7-38, to sources for well completion information, including the screened <br />interval, for all monitoring wells. (For example: Exhibit 26, Item 1 in Volume 20 has completion <br />information for 5 of the 34 wells described in table 2.04.7-38). <br />Response: A response for this comment will be submitted at a later date under a separate cover letter. <br />AN EQUAL OPPORTUNITY/AFF,RMATIVEACTION EMPLOYER <br />A Touchstone Energy'Cooperative <br />