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.'~' , <br />INSPECTION REPORT <br />Site: National King Coal Mine, Hesperus, Colorado <br />Inspected By: Don R. May, P.E., Project Engineer <br />Inspection Date: Quarterly Inspection, July 6, 1996 <br />Ponds: The east and west sedimentation ponds and their embankments are in good <br />condition. There are no signs of excessive erosion of the inlet channels or outlet <br />spillways and all pipes are in good condition. As seen in photographs 1 and 2 the <br />pond both have standing water from recent rains. The low flow outlet for the west <br />pond ,right side middle of photo 1, is several feet above the bottom preventing <br />this water from draining. Harry Ranney's most recent survey of this pond should be <br />checked to verify that this is adequate. <br />Drainace Ditches; Photograph 3 shows the eastside drainage channel adjacent to <br />the waste pits. It is in good condition. Photographs 4 and 5 show the drainage <br />ditch along the top and tow of the waste pile. These are in good shape and appear <br />to operating properly. Photograph 6 shows the yard looking from the waste pile. <br />The yard is dry and drainage structures are in good shape. <br />All other ditches and structures were inspected and appear in good operating <br />condition. Except for the conditions mentioned above, all drainage features have <br />been constructed and are operating as stated in the drainage plan submitted to the <br />Division of Minerals and Geology. <br />Coal Waste Pile: There are no signs of structural instability on the waste pile. <br />Photograph 5 shows the front face of the waste pile. The slope of the face <br />appears to exceed the design slope of 3:1 (horz:vert). This should be confirmed <br />and adjustments made to the face as needed to assure the design slope is met. <br />The highwall and other slopes at the site appear stable. <br />It appears that waste material is being generated in larger amounts that <br />initially expected and hence the waste pile is approaching the final design volume <br />prematurely. <br />Except for the items mentioned above the fill on the waste pile has been <br />constructed as specified in the design approved by the Division of Minerals and <br />Geology, <br />