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surface water runoff from the ore pad. Mitigation measures include adjusting the <br />treatment system if any parameters exceed permit limits. <br />b. Surface water runoff from the mine facilities area, including the waste pile, is <br />directed to the sediment pond. As discussed in Item 16 above, the sediment pond will <br />be sampled quarterly. In the event of an exceedance of surface water standards, <br />Energy Fuels will notify the DRMS and BLM within 30 days. Energy Fuels will <br />identify and mitigate the source of the exceedance. Mitigation may include repairs or <br />modifications to the waste pile, pad areas, and/or ditches. If the source cannot be <br />mitigated, stormwater will be treated in the treatment plant before being discharged. <br />Ground Water <br />a. The proposed monitoring well (Well W-1) is located immediately downgradient of <br />the Whrilwind Mine surface facilities near 5/10 Road. The well will be completed and <br />screened in the lower Brushy Basin sandstone aquifer if this sandstone unit is present. <br />Baseline conditions will be established with four quarters of sampling and water level <br />measurements. Subsequently, water levels will be measured quarterly and water <br />samples will be collected and analyzed on an annual basis. Previous sampling of this <br />aquifer indicates that the ground water does not meet all state ground water quality <br />standards. Should monitoring indicate that the water quality is deteriorating compared <br />to the established baseline conditions, Energy Fuels will notify DRMS and the BLM. <br />Potential causes will be evaluated and a mitigation plan that is acceptable to both <br />agencies will be developed. <br />b. Water inflows within the mine will be monitored and reported on a quarterly basis. <br />Mitigation measures include point source control during mining and additional water <br />control measures at the time of closure (e.g., decline bulkhead). Water seepage rates <br />at the PR Spring outlet pipe will be measured quarterly and water samples will be <br />collected and analyzed on an annual basis. PR Spring is naturally of poor quality <br />because it emanates from the Salt Wash, which is highly mineralized. This spring, as <br />discussed in Appendix C of the 112d Application is separated from the mine <br />workings by aloes-permeable mudstone zone. The DRMS and BLM will be notified <br />if the flow rates or water quality at PR Spring change in a statistically significant <br />manner. <br />Summary <br />The surface water monitoring program at the treatment plant discharge point and the <br />sedimentation pond provide monitoring of the entire Whirlwind surface area. Surface <br />water sampling is not proposed for the Packrat pad because ore and waste will be <br />placed in bins for transfer to the Whirlwind. However, the site's stormwater <br />management plan will include periodic inspections of the Packrat diversions ditches <br />and sumps. <br />The ground water monitoring plan includes installation and monitoring of a <br />downgradient well in the lower Brushy Basin aquifer (Well W-1). Underground <br />monitoring of water inflows and source control measures are designed to limit the <br />1:~1er~1 [='ue;ls Resour~e5 C;crr~orati«~~ =1=1 1~niorl I3cnrlevard, Suite Ei00 16 <br />i.,,~l:~;r~-cacx3. C~;C) 8Ot2Y t'hc~~ze: 3f}3-~)7~-2144 <br />