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McClane Canyon Mining, LLC <br />McCLANE CANYON MINE <br />2019 IMPOUNDMENT YEARLY INSPECTION <br />In accordance with Rule 4.05.9(14), all impoundments shall be inspected at least yearly <br />to determine if the impoundment has been maintained as designed, and in accordance <br />with the approved plan and the applicable regulations. This yearly inspection is for the <br />impoundment located at the McClane Canyon Mine. <br />On March 20, 2019, 1 performed the required yearly inspection. I, J. E. Stover, have a <br />wide variety of experience in the design and construction of earth fill embankments. <br />Nothing was observed during the inspection that would indicate the pond has a <br />potential for failure. There was no appearance of erosion, instability, structural <br />weakness or other hazardous conditions. There are no required monitoring procedures <br />or instrumentation other than quarterly and yearly inspections. There are no aspects <br />which might affect stability and there is no required maintenance. The sediment pond <br />had a pool of water standing about one foot above the invert of the primary spillway at <br />elevation 5458. The pond/impoundment was not discharging during the inspection. <br />The required capacity of the sediment pond is 0.55 A -F. The required water capacity of <br />the sediment pond is 0.36 A -F and the required sediment capacity is 0.19 A -F (ref. old <br />Figure 2.2-3). The actual size of the pond exceeds the required capacities listed in the <br />permit. <br />The sediment pond has the following estimated capacity based on the existing water <br />level in the pond: <br />POND CAPACITY - ACRE FEET <br />Water <br />Sediment <br />Total <br />0.67 <br />0.28 <br />0.95 <br />To the best of my knowledge and belief, the impoundment/sediment pond at the <br />McClane Canyon Mine has been maintainqf as designed and in accordance with the <br />approved plan and applicable regulations#VZN,'16 t A <br />James E. Stover a <br />Colorado Professioineer 0 <br />Registration No. 1923 <br />