Laserfiche WebLink
November 20, 2019 C-1981-018/Deserado Mine CCW <br /> The Slot Storage has two ponds associated with it,the SS-1 Pond and the SS-2 Pond. Neither of the ponds were <br /> impounding water. The spillways at both of the ponds were clear of debris. The embankments were stable and <br /> vegetated. There were no indications of erosion observed. <br /> The B Seam Dewatering System No. 2 was observed to be holding water in its second cell. There was no water <br /> observed in the last cell of the pond. The embankments were stable with establishing vegetation. There were no <br /> erosional concerns identified. <br /> The B Seam Dewatering System No. 1 was holding water in all of its cells. Discharge from the Last Chance Pond <br /> (Photo 1)was observed. The spillways in the system were functioning as designed. There were no indications of <br /> erosion or instability on the embankments. Vegetation on the embankments was well-established. <br /> The RP-1 Pond is associated with the RP-1 Refuse Pile. The pond was dry during the inspection. The <br /> embankments were stable with established vegetation. There were no erosional features observed. The trash rack <br /> on the spillway was clear of debris. <br /> The RP-2/3 Pond and the RP-4 Pond are associated with the RP-2/3/4 Refuse Pile. The RP-2/3 Pond was only <br /> holding water in its east cell. There was no water in the west and main cells. The spillways for the pond were free <br /> from obstructions. The trash rack on the main spillway was clear of debris. The embankments of the pond were <br /> vegetated and stable. No indications of erosion were seen. The RP-4 pond was dry at the time of the inspection. <br /> The spillways were unobstructed. There were no erosional features or indications of instability observed. The <br /> embankments had established vegetation on them. <br /> The RP-5 Pond is associated with the RP-5a Refuse Pile. There was no water impounded in the pond. The <br /> embankments were stable and vegetated. There were no indications of erosional features. <br /> The Raw Water Lagoon(Photo 2)was impounding water during the inspection. The embankments were stable <br /> with established vegetation. No erosional features were observed. <br /> PROCESSING WASTE/COAL MINE WASTE PILES—Rule 4.10 and 4.11 <br /> Drainage Control; Surface Stabilization; Placement: <br /> Refuse was being actively placed on the RP-2/3/4 pile during the inspection. The pile was stable with no <br /> indications or major erosion. There is localized erosion on the outslopes of the pile in the form of rills. These rills <br /> have been documented in previous Division inspections. Depending on the amount of spring precipitation,the <br /> rills could enlarge to the size of gullies. If this occurs the Division will at that time recommend regrading the <br /> outslopes of the pile. Perimeter ditches for the pile were in good condition and no erosional concerns were noted. <br /> The RP-5a pile was stable with no major erosional features observed. Localized rills were observed on the <br /> outslopes of the pile. The rills may increase to the size of gullies due to spring precipitation. If this should occur, <br /> the Division will recommend regrading the outslopes. The perimeter ditches were clear of debris and no erosional <br /> features were observed. <br /> Number of Partial Inspection this Fiscal Year: 3 <br /> Number of Complete Inspections this Fiscal Year: 2 <br /> Page 3 of 8 <br />