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SNOWCAP COAL COMPANY <br />NORTH AND SOUTH PORTALS <br />IMPOUNDMENT YEARLY INSPECTION <br />In accordance with Rule 4.05.9(14), all impoundments shall be inspected at least yearly <br />to determine if the impoundment has been maintained as designed, and in accordance <br />with the approved plan and the applicable regulations. This yearly inspection is for the <br />impoundments located at the North and South Portals, North Decline and Refuse <br />Disposal Areas. <br />On March 16, 2011, 1 performed the required yearly inspections. I, J. E. Stover, have a <br />wide variety of experience in the design and construction of earth fill embankments. <br />Nothing was observed during the inspection that would indicate the ponds have a <br />potential for failure. There was no appearance of erosion, instability, structural <br />weakness or other hazardous conditions. There are no required monitoring procedures <br />or instrumentation other than quarterly and yearly inspections. Unless noted below in <br />the discussion of each pond, there are no aspects which might affect stability and there <br />is no required maintenance. None of the pond/impoundments were discharging during <br />the inspection. <br />Pond 6 collects run-off from CRDA-1. The pond was dry during the inspection. There <br />are approximately 2.3-feet of sediment buildup in the pond. This figure is derived from <br />the average length of the three sediment poles located in the pond minus the design <br />depth. The percent of sediment buildup is 43% (2.3' deep divided by 5.4' maximum <br />depth). Based on this sediment buildup and aerial topo maps, the pond has the <br />following estimated capacity: <br /> Water Sediment Total <br />Pond 6 - A-F 1.33 0.95 2.28 <br />The estimated water capacity of Pond 6 is less than the original design requirement of <br />1.49 acre feet. However, calculations presented in Volume III, Appendix 13-2, page <br />CDRA-1-1 ii, based on the partially reclaimed and vegetated refuse pile indicate the <br />required water capacity of Pond 6 is only 0.68 acre-feet. <br />Pond 7 collects run-off from the North Decline. The pond was dry during the <br />inspection. Volume III, Appendix 13-2, page NDEC-1 shows that its design water and <br />sediment capacities are 0.23 A-F and 0.03 A-F respectively. It is a dugout pond which <br />must be dewatered with a pump. There is little if any sediment buildup in the pond. <br />Therefore, the pond's capacity is obtained from the most recent pond certification <br />performed by Larry M. Reschke, P.E., on June 1, 1995. <br /> Water Sediment Total <br />Pond 7 - A-F 0.34 N/A 0.34 <br />-1- <br />