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reclaimed ponds have been on Phase III bond-released lands.For the revised PR-I I Table 4.8-1,a careful count,that <br /> included utilization of both aerial photographs and boots on the ground,resulted in the 55-stock pond count. <br /> Trappers' response adequately addresses the above cited rule. <br /> 7. Future Life ofMine stock ponds reduced to from 41 in PR7 to 10 in PRII,please discuss. <br /> Trapper Response to Comment 7: Given proposed changes in future mining that includes much more highwall <br /> mining the number of anticipated future stock ponds has significantly decreased. In addition,the 41 stock ponds <br /> proposed in PR-9 was probably a significant over estimate based on what was thought would be needed for post <br /> mine drainage stabilization. Since then,on the ground experience has shown that rock check dams have worked <br /> effectively without the need for multiple stock ponds. <br /> Trappers' response adequately addresses the above adequacy question. <br /> DRMS has the following questions regarding Water Depletion Table (4.8-1), Page 4-172a <br /> The value in PR11 Table for Average Annual Pit dewatering appears to be miscalculated, having <br /> ramifications for the Total adjusted Depletion. <br /> 8. Please double check the calculation and provide updated information as needed. <br /> Trapper Response to Comment 8: Trapper made a calculation error for pit dewatering. The correct <br /> number is 39.87 and is corrected in revised Table 4.8-1 (enclosed). In addition,a sediment pond was added <br /> to the evaporative loss section. With these two corrections the final water depletion number changed from <br /> 145.77 to 143.50 acre feet. <br /> Trappers' response adequately addresses the above adequacy question. <br /> Culverts Table 4.8-2 pa eg 4-174 <br /> 9. It appears that Culvert A13 may have been replaced. Please discuss the change from 36 <br /> cfs and 36 in diameter in RN7 to 2.4 cfs and 24 in diameter in PRII and provide updated <br /> information as necessary. <br /> Trapper Response to Comment 9: Culvert A-13 is located on the new Life-of-Mine road. It did not replace a <br /> former Culvert A-13 at the same location.Historic culvert A-13 was located on the old North A haulroad and no <br /> longer exists. We have used the A-13 culvert designation on a new culvert. <br /> Trappers' response adequately addresses the above adequacy question. <br /> Table 4.8-3 page 4-177 Diversion Ditch Table <br /> DRMS notes that the diversion ditch table updated in 2022 April indicates a diversion ditch for <br /> East Pyeatt No. 3. <br /> 10. In the table submitted with PRII East Pyeatt No 3 is omitted and replaced with East <br /> Pyeatt No.1. Please address the discrepancy. <br /> Trapper Response to Comment 10: The name of East Pyeatt No. 3 was in error on Table 4.8-3 and was corrected <br /> to the proper East Pyeatt No. 1.Map M-52 has consistently shown this diversion ditch as East Pyeatt#1. <br /> Trappers' response adequately addresses the above adequacy question. <br /> Table 4.8-6 Sediment Pond Summary page <br /> 11. For Deal Pond#2 criteria for the 10 year 24 hour storm event appears different from the <br /> current table in the permit submitted with PR9. Please address this. <br /> Trapper Response to Comment 11: The PR-9 pond criteria were for proposed pond construction.PR-11 criteria <br /> were for as as-built pond construction. The pond design was changed significantly from the proposed pond design to <br /> the as-built design. <br /> Trappers' response adequately addresses the above adequacy question. <br /> 5 <br /> Trapper Mine PR I ADQ No 2 <br /> 2023 February <br />