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M MW Sorter <br /> this new water treatment. Please thoroughly discuss these plans for the water treatment system, <br /> providing specific design details and a discussion on the timeframes of construction and use as compared <br /> to the mining operation's timeframes. Depending on how the Applicant responds to this item, the <br /> foundation pad may need to be considered an Environmental Protection Facility and comply with all <br /> appropriate portions of Rule 6.4.21 and Rule 7 and the water treatment may need to be addressed in <br /> accordance with Rule 3.1.6(1). <br /> MW Sorter (Item#13 Response): The building being constructed is a multipurpose/general purpose <br /> industrial/commercial building which may contain: <br /> 1.) The sorter machinery <br /> 2.) Water treatment equipment fabrication and assembly <br /> 3.) Office area <br /> 4.) Equipment service area <br /> 5.) Commercial equipment storage <br /> 6.) Tourism support facilities(ATV/snowcat)when sorting uses are decommissioned. <br /> Note-No final water treatment designs has been completed as MineWater is currently performing all water <br /> treatment in-situ to the London Mine. No liquids will be contained in this building unless further <br /> modifications are made including provision for double-containment(precautionary against rupture)for any <br /> tanks that might be utilized. <br /> In addition, please see Appendix G at the end of this letter stating MineWater Finance's request to keep all <br /> permanent features on the site which are needed at the conclusion of this phase of the project. <br /> DRMS(Item#14): During the August 14, 2023 pre-operational inspection, the Division observed a water <br /> line from the well associated with P-2016-020, located west of the crusher area traveling east toward the <br /> London Mine water tunnel, likely crossing through the permitted area. Please provide details on the <br /> location of the water line in comparison to the proposed operation. If this line is within 200 feet of the <br /> permit boundary, please account for this additional structure in Exhibit 8 and update Exhibit C to include <br /> the size of pipe, depth,flow rates, and any proposed protective measures that are needed to ensure the <br /> operation does not damage the water line. <br /> MW Sorter(Item#14 Response): This water line is a 12" HDPE DR9 pipe, which carries water flow from <br /> the lower well from 600 gallons per minute (gpm)to 1,000 gpm. This pipeline is noted on Exhibit E and is <br /> bedded and buried at a depth greater than 5 feet within the permit area. There is no potential for crushing <br /> or damaging to this pipe,which is owned by the Applicant. <br /> DRMS(Item#15): Through discussions with the Applicant on ensuring the reclaimed site is stabilized as <br /> required by 3.1.5(3), 3.1.5(10), and 6.3.4(1)(e), the Applicant has stated the operation will now salvage <br /> the native material underneath the South London Stockpile Area and it will be used as a growth media for <br /> reclamation prior to seeding the site. Please update Exhibit C with this revised plan and provide details on <br /> the estimated depth of growth media to be salvaged during removal of the waste rock piles. <br /> MW Sorter(Item#15 Response): Exhibit C was updated with the following: <br /> As native horizons are uncovered,the fine material will be excavated and stockpiled around the American <br /> Shaft area both as fill for the water-filled collapse area and for subsequent use for final cover. Upon <br /> completion of the repository at the South London Stockpile, 3" of fine-grained growth medium will be <br /> 61 <br />