2013-04-17_HYDROLOGY - C1996083 (3)

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BOWIE RESOURCES, LLC BOWIE NO. 2 MINE IMPOUNDMENT YEARLY INSPECTION In accordance with Rule 4.05.9(14), all impoundments shall be inspected at least yearly to determine if the impoundment has been maintained as designed, and in accordance with the approved plan and the applicable regulations. This yearly inspection is for the impoundments located at the Bowie No. 2 Mine. On March 29, 2012, I performed the required yearly inspection. I, J. E. Stover, have a wide variety experience in the design and construction of earth fill embankments. Nothing was observed during the inspection that would indicate the ponds have a potential for failure. There was no appearance of erosion, instability, structural weakness or other hazardous conditions. There are no required monitoring procedures or instrumentation other than monthly and yearly inspections. There are no aspects which might affect stability. None of the ponds were discharging during the inspection. Pond B had a pool of water about 5 -feet below the emergency spillway at approximate elevation of 5947. Sediment was visible near the emergency spillway. Pond B needs dewatered. Sediment removal does not appear to be required at this time. The water level of Pond C was at the level of the primary spillway at approximate elevation of 5992.75. Because of the water level in the pond, it is not possible to determine the sediment level. Estimate 10% sediment build up since the pond was recently cleaned of sediment. Pond D had a pool of water standing at the level of the primary spillway at approximate elevation of 5973.4. Some sediment build up was visible on the east and west ends of the pond. Estimate 20% sediment build up since sediment was recently removed from the pond. Pond F had a pool of water standing about 6 -feet below the elevation of the emergency spillway at approximate elevation 5948. Sediment has built up at the west end of the pond. It is estimated the sediment build up is over 60% of the design capacity. Pond J was dry with no apparent sediment build up. Pond K had was damp with an estimated sediment build up of 20 %.