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March 15,2022 C-1981-012/New Elk Mine JLE <br /> withdraws water from the Middle Fork of the Purgatorie River to supply the water to the mine. Mine water is then <br /> pumped to the surface into Pond 001a. To maintain adequate capacity in Pond 001a,this mine water is then <br /> pumped to the pumphouse where it is being diverted and discharged into ditch D15 where it is allowed to flow to <br /> Pond 007a. <br /> The sediment control ditching was walked from where culvert C-19 discharges to ditch D15 to where the water <br /> discharges to Pond 007a. Overall this ditch is clear and functional,but several areas were noted to have more <br /> sediment built up in the ditch and where the outer embankment of the ditch is less robust and slightly eroded. For <br /> example,just west of culvert C13 the sediment is built up in ditch D15 and the embankment of the ditch <br /> appears to be slightly eroding on the north side. NECC should repair this area to insure mine water does <br /> not over-top the ditch and discharge into the river without treatment. <br /> y.R � <br /> r <br /> Figure 3. Ditch D15, location of where sediment built-up was noted. Erosion on the out-slope <br /> of the ditch embankment is noted with a red arrow above. <br /> NECC appears to have previously placed hay bales and other sediment control devices to catch sediment and <br /> water from a small area north of the wash plant just under and adjacent to where the conveyor exits the plant. <br /> These hay bales were largely disintegrated and no longer functional. Water in the area is frozen. Mr.Massarotti <br /> indicated once the water has melted he plans to dig a small ditch in this location to direct water into the ditch that <br /> flows to Pond 007a and will also install sediment control devices,possibly hay bales,at this location again. <br /> NECC must re-establish proper drainage in this area and install these sediment control devices. <br /> Number of Partial Inspection this Fiscal Year: 6 <br /> Number of Complete Inspections this Fiscal Year: 3 <br /> Page 4 of 9 <br />