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ANNUAL SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: New Elk <br />NPDES ID. No.: None: Containment Area RDA-SE <br />Inspection Period: Second Quarter 2008 <br />Inspection Date: 06/30/08 <br />General Description or Reference to Site Plan: <br />This containment area lies East of the RDA refuse conveyor and south of Hwy. 12. It is designed <br />to contain run-off from this area of the RDA belt conveyor. Specifications are detailed on the <br />Containment Area RDA-SE As built drawing dated 2/26193. The stage storage curve shows <br />top of embankment at 7413' with sediment accumulation to 7412.1'. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. <br />2). Erosion forming Gullies: <br />3). Is wave action causing erosion: <br />On the Upstream embankment? <br />Excellent Moderate Few Poor <br />Extensive Some Few None <br />Yes No Gi <br />4). Erosion of the downstream toe of the embankment? Yes No Ll_? <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? <br />Could this seepage cause potential instability? <br />Yes No y <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes No <br />Elevation @ top of Elevation of Water Surface: <br />Elevation to top of Sediment <br />OTHER OBSERVATIONS <br />14 <br />O(il (,?(5 (r Wr ? . <br />HA Qualified I undm nt Inspector <br />7/2/0 I If <br />Date <br />7/ t4 /®c <br />Date <br />Page 1 <br />