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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 in <br /> the Section 11 Pit. Further, highwall mining in the East Pit, West Pit, South Taylor Pit, and Collom <br /> Pit has been approved(PAP, Section 4.23). <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 7; <br /> and Maps 7, 11, 11A, 1113, 11C, 12, 12A, 1213, 12C 17, 32 and 37 of the PAP. A detailed summary of <br /> alluvial valley floors identified during the original permitting of the Mine can be found in the original <br /> findings 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 four drainages with segments in or adjacent <br /> to the permit area are considered alluvial valley floors: Good Spring Creek, Wilson Creek, Lower <br /> Elkhorn Creek, and Jubb Creek. These stream valleys are shown on Map 1 IA of the PAP. The <br /> following stream valley segments have been determined to be alluvial valley floors: <br /> • Good Spring Creek valley deposits mapped as Qa on Map 1 IA of the PAP, extending <br /> from the West Fork Good Spring Creek confluence downstream for the entire length of <br /> the valley. <br /> • Upper segment of Wilson Creek valley deposits mapped as Qa on Map 11A of the PAP, <br /> from the confluence of East and West Forks of Wilson Creek, downstream to the <br /> approximate center of Section 7, T3N, R93W. <br /> • Lower segment of Wilson Creek valley deposits mapped as Qa on Map 11A of the PAP, <br /> extending from lower boundary of"Area Affected by 1985 Erosion and Mass Wasting <br /> Event." <br /> • Lower Elkhorn Creek valley deposits mapped as Qa on Map l IA of the PAP. <br /> • Jubb Creek and its tributary valleys with deposits mapped as Qa on Map 11A of the PAP. <br /> Flood irrigation may have occurred in the past along portions of Wilson Creek within the permit area. <br /> Small cropland parcels within a mile or so to the north (downstream) of the permit <br /> 53 <br /> Permit Revision No.5(PR-05),C-1981-019 <br />