2014-07-29_REVISION - C1981010 (3)

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Forrest Luke, TMI Page 4 7/29/2014 b. For the expansion area please update the surface water information contained in permit section 2.7.4 with the information required from Rule 2.04.7(2)(a) and (2)(b)(1). i. Trapper's Response: The surface water regime of the expansion area is similar to the existing permitted mine area. Enclosed Table 2.7 -12 of section 2.7.4 has been updated with new information in regard to the expansion area. The remaining discussion within section 2.7.4 is still applicable to the expansion area. Enclosed revised Map M -51 (sheet 3) and Map M -31 (included in the original PR -7 submittal) depict relevant surface water courses and surrounding water resources in the area. Prior studies and information gathered on the characteristics of the surface water regimes of the Williams Fork Mountains would pertain to the expansion area. Trapper will submit additional relevant information as needed once monitoring of the affected drainages is conducted. ii. Division's Response: The minimum surface water information required in accordance with Rule 2.04.7(2)(b)(1) is the minimum, maximum and average flow which identify critical low flow and peak discharge rates of streams sufficient to identify seasonal variations. Trapper has identified two additional subdrainage basins within the expansion area; Deacon and Jeffway. For surface water within these subdrainage basins, Trapper will need to submit the information required by Rule 2.04.7(2)(b)(1). If new surface water monitoring sites are established, map M30 will need to be updated. iii. Trapper's Response #2: Permit page 2 -4141 has been updated with current preliminary baseline information for Jeffway and Deacon Gulch. Further information relevant to this section will be added as it is obtained. Map M30 will be updated at a later time when observation flumes are installed. iv. Division's Response: This item is considered resolved. 11. For the expansion area, please submit a map that depicts the location and extent of sub - surface water, if encountered within the proposed permit and adjacent areas, including but not limited to areal and vertical distribution of aquifers, and an estimate of seasonal variations of aquifer characteristics on cross section and contour maps as appropriate; in accordance with rule 2.04.7(4)(c). a. Trapper's Response: The required information will be contained within the upcoming 2013 Annual Hydrology Report. The location and extent of sub - surface water will be included in the Water -Level Elevation maps in the 20 13 AHR. The proposed new permit