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Colowyo at the Mine, Colowyo is monitoring the possible movement or subsidence of the truck <br />parking lot through visual inspection; this is done to meet Mine Safety and Health Administration <br />(MSHA) requirements. <br />XIX. Coal Exploration - Rule 4.21 <br />Coal exploration outside the Permit boundary is not authorized by the mining permit with the <br />Division, and is not addressed in this finding. <br />XX. Concurrent Surface and Underground Mining - Rule 4.22 <br />No concurrent surface and underground mining is planned for the permit renewal period. <br />XXI. Auger Mining - Rule 4.23 <br />No auger mining is currently proposed in the mine plan. However, auger mining was done in 1993 <br />in the Section 11 Pit. Further, highwall mining in the East Pit, West Pit and South Taylor Pit has <br />been approved (PAP, Section 4.23). Highwall mining was not originally permitted for the South <br />Taylor Pit during the Permit Revision No. 2 review process, leading to the Division adding <br />Stipulation 9 to the permit. This stipulation was terminated with the submission of TR -77, which <br />permits limited highwall mining in the South Taylor Pit area. <br />XXII. Operations on Alluvial Valley Floors - Rule 4.24 <br />The Permit was found to be in compliance with Rule 4.24. <br />Information related to alluvial valley floors is found in Sections 2.04.7, 2.06.8 and 4.24; Exhibit <br />7; and Maps 11B, I IC, 12A, 17, 32 and 37 of the PAP. A detailed summary of alluvial valley <br />floors identified during the original permitting of the Mine can be found in the original findings <br />document. <br />A. Designation of Alluvial Valley Floors <br />Stream Valley Segments Determined to be Alluvial Valley Floors <br />The Division has made the determination that portions of two drainages with segments in or <br />adjacent to the permit area are considered alluvial valley floors: Good Spring Creek and Lower <br />Elkhorn Creek. These stream valleys are shown on Map 11 C of the PAP. The following stream <br />valley segments have been determined to be alluvial valley floors: <br />• Good Spring Creek valley deposits mapped as Qv on Map 11C of the PAP, extending <br />from the West Fork Good Spring Creek confluence downstream for the entire length of <br />the valley. <br />• Lower Elkhorn Creek valley deposits mapped as Qv on Map 11C of the PAP. <br />Revised Proposed Decision and Findings of Compliance August 2018 <br />Permit Renewal No. 7 P a g e 154 <br />