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~: l " <br />IIVSPECTION REPORT <br />Site: National King Coal Mine, Hesperus, Colorado <br />Inspected By: Don R. May, P.E., Project Engineer <br />Inspection Date: Quarterly Inspection, September 13, 1995 <br />P n • The east and west sedimentation ponds and their embankments are in good condition. <br />The west pond has been dug out, significantly increasing its volume. A staff gage has been <br />placed near the center of the pond. A survey currently being performed by Harry Raney will <br />establish the elevation of the gage and the volume of the pond. All inlet channels and outlet <br />spillways and pipes are in good condition. <br />Drainagg Ditches: Photograph JJ1 shows the small interceptor channel which extends from <br />behind the office to eastside channel near the base of the waste pile. It has been reformed <br />and is in good condition. The eastside channel still has some heavy vegetation which could <br />cause obswction, but it is generally in good condition. There are no signs of erosion and <br />recent maintenance has been performed. Photograph Jig shows the pipe intake at the north <br />end of the channel before it drops through a pipe to the yard. <br />The drainage ditch along the top back and tce of the waste pile has been reworked <br />since the last inspection. As seen in photos Ji3, #4 and Ji5, there is now a defined, continuous <br />channel as specified on the approved design plans. If maintained, this new channel should <br />adequately transport flows. All other ditches and pipes on the site appeazed in good condition <br />and are adequately handling flows. <br />All drainage features have been consWCted and are operating as stated in the drainage <br />plan submitted to the Division of Minerals and Geology. <br />Coal Waste Pile: There aze no signs of sWCturai instability on the waste pile. Recent fill <br />has been placed at the base of the pile as planned. Photograph ri3 shows new material at the <br />base of the pile and photograph M4 shows the north end of the pile. The highwall, shown in <br />figure li5, and other slopes at the site appear stable. The fill on the waste pile has been <br />constructed as specified in the design approved by the Division of Minerals and Geology. <br /> <br />..., <br />''~~`~'S;'piaq~ `..~.. <br />t:':.. .. <br />