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INSPECTION REPORT Site: National King Coal Mine, Hesperus, Colorado Inspected By: Don R. May, P.E., Project Engineer Inspection Date: Quarterly InspectionA~966- MA4cN~ 200 r/ Ponds: Photograph 1 shows the west pond And photo 2 the east pond. Both appear to operating properly. The inlets, outlets and embankments of both ponds were inspected and appear in good condition. Both ponds are relatively Dean of sediment and appear to have adequate storage volume. Drainaoe Ditches: The drainage channels, on the north and south sides of the waste pile, appear in good general condition_All other drainage channels on the site war's inspected and are in good condition, Routine maintenance should be cerried out to ensure that the entrances to all pipes are free of debris. Photo 3 shows a partially blocked entrance located on the rock channel above the coal storage pile. Drainage in and around the upper and lamer yards is working well and both are in good shape. Photo 4 shows the relatively new work completed behind the shower room. This appears to be a new leach field. As seen this harmed area will collect runoff and act as a pond. Regardless of what is buried here, retaining water at this site is not desirable. The area should be backfiiled and graded so that it flows to the nearby drainage ditch. Except where noted, atl drainage features have been constructed and are operating as stated in the drainage plan submitted to the Division of Minerals and Geology. Coal Waste Pile: The upper portion of the waste pile (above the road} appears stable and in good condition. The retaining blocks placed at the toe of the waste pile can be seen in photo 5. Sediment has filled in behind the blocks and the slope is beginning to stabilize. A continuation of the blocks around the curve towards the photographer would help mediate the oversteepened section seen in the photo. The design slope of the face is 3:1. At some point the atlas! slope should be surveyed to confirm compliance. Uhimately another course of block may be needed. The top of the pile is in reasonably good condition, Photo 6. Drainage along waste rock pile access road up the face and around the pile is working well with no signs of undo erosion. Except for the items mentioned above the fill on the waste pile has been constructed as specified in the design approved by the Division of Minerals and Geology. ~~ ~ Fxi ~o ovc- Schematic diagam of low height retaining wall at tce of waste pile slope.