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.% <br />INSPECTION REPORT <br />Site: National King Coal Mine, Hesperus, Cobrado <br />Inspected ey: Don R. May, P.E., Project Engineer <br />Inspection Date: Ouarterty Inspection, February 8, 2004 <br />Ponds: The east and west sedimentation ponds and their embankments and outlets <br />appear in good oondrtion although snow cover makes some of this assessment difficult. <br />The west pond is shown in photograph 1. <br />Drainage Ditdies: The large, rods lined east side and west side drainage channels <br />appear in good general condition. Drainage along the waste pile access road (shown in <br />photo 2) and other roads at the mine is performing according to the design plan. The <br />upper and kwNer yards are all in good shape_ Photogreph 3 shows a portion of the mine <br />entrance road looking toward the upper yard and photo 4 kxrlcs down on the upper yard <br />from near the adit. Although partially covered with snow, drainage grates, pipes and <br />ditdres appeared dear and functioning. A~ other ditdies and drainage structures were <br />inspected and appear in good operating condition. There are no apparent drainage <br />problems on the site. F~ccept where noted, all drainage features have been constructed <br />and are operating as stated in the drainage plan submitted to the Division of Minerals <br />and tseology. <br />Coal Waste Pile: The coal storage pile, in the upper yard, is much smaller than during <br />the last two inspections and is approaching the normal, historic sine. Removal of coal <br />that had been placid On top of the kwwer portron of the front face of the waste pile has <br />resulted in over-steepening of the tce of the pile. This can be seen in photo 5. To a <br />large e~dent, the toe of a slope controls the integrity of the entire slope. Care shoukt be <br />taken to assure that this area is regauded and compacted to design specificatlorrs. <br />Secondry, this area should be vegetated in acxordance with the approved mine plan. At <br />this time there are no visible signs of structural instat~lity on the waste pile. <br />The top of the waste pde, photograph 6, is in good condition but somewhat rough. The <br />surface should be kept as smooth as possible to faalitate unimpeded flow of surface <br />runoff to the drainage ditch. This area strould be graded with a 1%-296 cross slope to a <br />wall-tiormed dtch on the east side. <br />Except for the items mentioned above the fill on the waste pile has been constructed as <br />spedfied in the design approved by the Division of Minerels and Geology. <br />