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Response to DRMS Adequacy Review (1) — Cotter JD -9 Mine Reclamation Plan Amendment <br />8. On page D -7 under item c., in regards to tree and shrub removal, the application states <br />that trees and other woody material will be removed and placed in separate piles. Please <br />specify this location(s) and provide revised figures for Exhibit C that show the proposed <br />location of the piles. <br />The trees and other woody materials will be removed and placed around the <br />lower permit boundary to be used as shelter by small mammals. Figures C3 <br />and C4 have been revised to show the location of these stockpiles are included as <br />Attachments #3 and #2 respectively. <br />9. On page D -7 under item d., it is stated that the new water treatment ponds located on <br />Figure C4. The only pond shown to be proposed on Figure C4 is a retention pond located <br />near the southwest corner. Please provide a revised figure that displays the proposed <br />water treatment ponds. <br />The proposed water treatment ponds are found in the northern permit area <br />shown on Figures Cl and C3 found in Attachment 3. <br />10. On page D -9 table D -1 displays 4 different treated water pond liners. Please specify <br />which one of the 4 liners listed will be used If Cotter is uncertain which liner will be <br />used an engineered design for each proposed liner will be required. <br />Cotter will submit an engineering plan to DRMS detailing the construction of <br />the liner and ponds prior to the commencement of mining operations. <br />11. On Page D -S under Item b, the applicant states that "A contractor will be used to haul <br />the ore from the surface ore stockpile area to the mill. The ore haulage contractor will be <br />responsible for a spill control plan. "Per the requirements of Rule 3.1.13 the mine <br />operator shall notify the Division of any toxic or hazardous substance, including spills of <br />petroleum products that occur within the permit area. Please commit to the requirements <br />of Rude 3.1.13. <br />3 <br />