_INSPECTION - C1981018 (54) - Laserfiche WebLink

Home Browse Search

July 19, 2011 C-1981-018/Deserado Mine JRS HYDROLOGIC BALANCE(cont.) -Sediment Pond RP-4 contained water approximately three feet below the discharge pipe and was not discharging. The pond embankment was well vegetated and stable and no erosional problems were noted at the time of the inspection. - Sediment Pond RP-5a contained water approximately three feet below the combined primary and emergency spillway and was not discharging. The pond embankment was well vegetated and stable and no erosional problems were noted at the time of the inspection. The ditch from the prep plant bench to pond DP-1 remains stable. -Sediment Pond SS-1 contained a small amount of water and sediment pond SS-2 was dry at the time of the inspection. The pond embankments were well vegetated and stable and no erosional problems were noted. -The water level at the fresh water lagoon by the White River has receded and returned to a normal level. The lagoon appears to remain stable and does not show any signs of problems from the high water. -The ditches along the haul road were stable and appeared to be functioning as designed at the time of the inspection. The portion of the ditch that sides the paved entrance road needs to be cleaned. Sediment has built up behind the straw bales and in the catch basins in the ditch. There are also several spots along the haul road to the refuse pile that have an accumulation of sediment that need to be cleaned. -The ditches along the conveyor corridor are also stable and appear to be functioning as designed. There are several spots along the road(on both sides of the haul road)that have an accumulation of sediment and need to be cleaned. -The ditch along the light-use road to the slot storage facility was stable and appeared to be functioning as designed. The sump before the culvert into pond SS-1 was full and needs to be cleaned. GENERAL MINE PLAN COMPLANCE: The Deserado Mine was currently mining in longwall panel LWB-11. Mining in the panel is approximately 80% complete. They are also doing development work on the headgate for longwall panel LWB-12. They have almost completed this development work. According to mine plan Map 120, the Deserado Mine is progressing as approved and permitted. PROCESSING WASTE/COAL MINE WASTE PILES—Rule 4.10 and 4.11 Drainage Control; Surface Stabilization;Placement: -Refuse pile RP-1 has been reclaimed. The pile was well vegetated and stable at the time of the inspection. There were no erosional problems noted on the pile. -Refuse Pile RP-2/3/4 is generally used as the active pile at the Deserado Mine during the summer but it was not being used at this time. There were several piles of refuse on the pile waiting to be spread and compacted. There were no signs of water pooling on the surface of the pile and the pile appears to be graded to achieve positive drainage. We drove on the pile and the pile appeared to be well compacted, with no soft spots noted. -Refuse pile RP-5a is used as storage pile for the refuse produced in the winter. The refuse is then spread and compacted in the summer. Deserado began spreading and compacting the refuse stockpile in May of this year. All of the stockpiled refuse has been spread and compacted at this time. Deserado was grading and smoothing out the pile at the time of the inspection. There was no water pooling on the surface of the pile and the pile appears to be graded to have positive drainage. We drove on the pile and no soft spots were encountered. There was one spot on the south side of the pile that has been excavated. This was probably a soft spot that was being reworked. Number of Partial Inspection this Fiscal Year: 1 Number of Complete Inspections this Fiscal Year: 0 Page 3 of 5