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0 <br />Colorado Division of Reclamation, Mining & Safety <br />March 31, 2016 <br />Page 7 <br />When MLC -04-02 and the Trout Creek Sandstone well have been drilled and completed, the <br />completion information for those two wells will be included in the exhibit also. <br />Colowyo stands by the footnote on Table 2.04-38 that references the Colorado Division of Water <br />Resources for well completion information for wells that were either not drilled by Colowyo or <br />were utilized as historic information (Exhibit 7, Item 21 Section 5.2.1). The pertinent <br />completion information for the Collom groundwater monitoring program is provided in Exhibit <br />7, Item 21 A which is more than sufficient for future hydrology evaluations. <br />ITEM 76. This item has not yet been adequately addressed. Please update Map IOB to show <br />the locations of all wells in Table 2.04.7-38. (See related Item 74) <br />Response: Please see response to Item 74. <br />ITEM 77. This item has not yet been adequately addressed. CCC responded that Map IOB had <br />been updated with the projected potentiometric surface of the Trout Creek Sandstone, and that <br />the text had been inserted into Volume 15, Rule 2 to discuss the wells that were used to <br />determine the surface. <br />Contour lines at intervals of 100, from 6600' to 6800', were projected onto Map IOB. They <br />indicate that the hydraulic gradient is such that groundwater would flow in in south-westerly <br />direction. The text on proposed Page 23 indicates that 5 points were considered in the <br />determination of this surface (C-05-33, DH -76-8, W-95-02, W-95-15 and UL -95-45). Of these, <br />C-05-33 and DH -76-8 were rightly discarded since they were dry and uncased respectively. <br />Several issues are evident: (1) W-95-15 is not shown on Map IOB; (2) There is potential <br />confusion over the location of W-95-02, since another point (also in the Wilson Creek drainage) <br />is labeled MW -95-02; (3) considering just UL -95-45 and W-95-02, since the location of W-95-15 <br />isn't shown, the potentiometric gradient is in the direction of W-95-02, (based on the data <br />summarized in the proposed text), which is approximately opposite to what has been drawn on <br />Map IOB. <br />Please address these issues and update Map IOB accordingly. <br />Response: Well DH -76-8 and W-95-15 have been added to Map lOB as requested. Colowyo <br />agrees with the Division assessment that the potentiometric gradient was incorrect. The contour <br />intervals were in error and have been corrected. All wells, as numbered, on Map 1 OB on Wilson <br />Creek are correct (i.e. W-95-02 and MW -95-02). Therefore, no changes were made to any wells <br />on Wilson Creek. <br />ITEM 78. This item has not yet been adequately addressed. In the letter of November 20, 2015, <br />AN EOUAL OPPORTUNITY/AFFIRIVATIVE ACTION EMPLOYER <br />A Touchstone Energy'Cooperative j� <br />