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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: Fourth Quarter 2009 <br />Inspection Date: 12/03/09 <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 4122/93. The stage storage curve shows <br />top of embankment at 7419' with 8.0' 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 />Excellent Moderate ew <br />Extensive &?e Few <br />4). Erosion of the downstream toe of the embankment? <br />Cause of erosion can be attributed to: <br />Yes <br />Yes <br />Poor <br />None <br />No V <br />No !?- <br />5). Is seepage occurring through the dam? <br />Could this seepage cause potential instability? <br />Yes <br />No L <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes <br />A <br />Elevation @ top of: ?L <br />Elevation of Water Surface: <br />Elevation to top of Sediment: <br />OTHER OBSERVATIONS//41--Z=- <br /> <br />No t-? <br />-e <br />Olt Cr.?( <br />MSHA Qualified Impoundment I spector <br />Date <br />r-rumbblufldl CIIy117CC1 VIIGGIII y I a ,nv?e.?.- -.? <br />Date <br />Page 1 <br />r ,< <br />ftf ., <br />v 7,9c/3