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Mine: New Elk <br />NPDES ID. No.: None: Containment Area RDA -SW <br />Inspection Period: Fourth Quarter 2012 <br />Inspection Date: 12/20/12 <br />General Description or Reference to Site Plan: <br />This containment area lies west 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 4/24/93. The stage storage curve shows <br />top of embankment at 7415' with sediment accumulation to 7413.5'. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover: Excellent Moderate <br />4). Erosion of the downstream toe of the embankment Yes <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage cause potential instability? <br />OTHER OBSERVAT. IQN <br />€4 b ; o`e_s q c c .(E �r -,t' <br />sAir . S? n < pt3 K <br />Date <br />1 <br />ANNUAL SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Elevation @ top of: Ja f / P k i � <br />Elevation of Water Surface: <br />Elevation to top of Sediment: <br />MSHA Qualified Impoundmen(Inspector <br />Page 1 <br />Date <br />Poor <br />2). Erosion forming Gullies: Extensive Some Few None <br />3). Is wave action causing erosion: <br />On the Upstream embankment? Yes <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes <br />1 <br />j7n <br />rofessional Engineer <br />• <br />No <br />No <br />No <br />Af. //N/��" c-_ � m ew( ,' ? /'e� <br />4J . { ��s� 4 <br />(-Alf I {✓ey <br />-3/N-160 <br />No C/ <br />Directing Inspection <br />