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June 10, 2014 C- 1982 - 056 /Foidel Creek Mine JDM <br />PROCESSING WASTE /COAL MINE WASTE PILES — Rule 4.10 and 4.11 <br />Drainage Control; Surface Stabilization; Placement: <br />The coal refuse disposal area (CRDA) and coal refuse disposal area expansion are constructed west of the <br />reclaimed valley and to the west of the Area 1 Pit. The CRDA and expansion continues to be an active refuse pile <br />in construction. <br />Refuse material continues to be placed in the RDA expansion area. Material was being stockpiled at the North end <br />of the RDA at the time of the inspection. The RDA was dry and compacted at the time of the inspection. The <br />refuse material had not yet reached the head of the under -drain of the RDA and the D50/9" drain rock and the two <br />filter layers were observed. The exposed under -drain was stable and constructed as designed. The underdrain is at <br />the edge of the topsoil stripping area. Phase 1 of the RDA expansion is nearing completion. <br />The first bench has been completed and the second bench is near elevation. The out slope of the first bench is <br />stable with suitable material placed on the slope and the first bench and the slope of the second bench is stable. <br />The construction of the east perimeter ditch RDA -4 has been completed and is stable. <br />Minor rilling ( -6 " -8" deep) was observed on the east side of the RDA as the material ties into the RDA expansion <br />area. No problems were noted and monitoring should continue as noted in the quarterly refuse pile inspection <br />reports. <br />The east side outslope established drain has been constructed to the first bench and was stable with no problems <br />noted. <br />RDA Underdrain <br />Number of Partial Inspection this Fiscal Year: 10 <br />Number of Complete Inspections this Fiscal Year: 4 <br />Page 8 of 13 <br />