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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-N <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 west of the RDA refuse conveyor and north 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 -N As built drawing dated 4/22/93. The stage storage curve shows <br />top of embankment at 7419' with &V storage for the 25-yr 24-hr. event <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 />4). Erosion of the downstream toe of the embankment? <br />Cause of erosion can be attributed to: <br />Excellent Moderate ew Poor <br />Extensive me Few None <br />Yes <br />Yes <br />No 4-_ <br />No l/ <br />5). Is seepage occurring through the dam? Yes No 4_ <br />Could this seepage cause potential instability? <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes <br />Elevation @ top of Elevation of Water Surface: <br />Elevation to top of Sediment: <br />OTHER OBSERVATIONS <br />SHA Qualified Impou ment I r <br />l Z <br />Date <br /> <br /> <br />79z, A;! <br />Date = - <br />Page 1 <br />No-, V <br />