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Loloff Mine <br />TR -01 Adequacy Letter <br />Page 3 of 6 <br />the ditch and specifications as to how much water the ditch can carry without experiencing <br />erosion. <br />12. The revision states Loloff Construction proposes to install a recharge ditch along the west side <br />of the pit to mitigate impacts if there are impacts from the dewatering to the other wells <br />adjacent to the pit that are within 600 feet of the mining limit. Please provide the design <br />criteria for installing the recharge ditch, provide the dimensions and describe how the ditch <br />would be constructed and reclaimed. <br />13. Please note the Division will require Loloff Construction to mitigate all impacts to permitted <br />wells affected by the dewatering activities, not just the wells within 600 feet of the mining <br />limit. <br />14. The revision does not identify groundwater monitoring locations along the north, south and <br />most of the west boundaries of the site. Please commit to installing piezometer along these <br />boundaries. <br />15. Please state if all registered alluvial wells within 600 feet were identified based on SEO <br />records and if field inspections conducted to identify ALL wells within 600 feet. Please <br />identify all wells within 600 feet of the pit on Exhibit C — Pre - Mining Plan map. <br />16. The Operator states should levels in the existing wells change by 2 -4 feet then Loloff <br />Construction, Inc. will mitigate by recharging at locations along the pit to increase the levels <br />of the groundwater so that the impact from dewater is minimized. Please provide <br />justification for the proposed 2 -4 feet trigger. Typically, a trigger point of a 2 feet change <br />from historic ground water levels is acceptable. The Operator must explain any mitigation <br />measures to be implemented and trigger points that would put mitigation measures into <br />effect if the recharging method of mitigation is not effective. <br />17. The revision states Mr. Don Loloff is pursuing agreements with the existing well owners <br />within 600 feet of the mining limit of the pit. Please provide the Division with signed copies <br />of the agreements when available or provide evidence the appropriate notice was provided <br />to the well owners. <br />18. The revision states Mr. Loloff is pursuing agreements to use the existing wells from Mr. <br />Harrell, Mr. and Mrs. Monroe and Mr. Francis to take groundwater level measurements to <br />monitor the depth of the groundwater adjacent to the pit. Please provide the Division with <br />signed copies of the agreements. <br />19. The revision states Loloff Construction will note the groundwater depths in the Derr Pit <br />monitoring wells, Mr. Harrell's well, Mr. And Mrs. Monroe's well and Mr. Francis's well to <br />monitor these levels throughout the course of the mining. Please commit to providing the <br />