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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: Fourth Quarter 2012 <br />Inspection Date: 12/20/12 <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 2/26/93. 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: Excellent Moderate <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 />Elevation @ top of: <br />Elevation of Water Surface: <br />Elevation to top of Sediment: <br />OTHAR OBSERVATIONS n <br />Vern cX CC kfl r c � a 4cEk--, 1 0:t PAItj <br />HA Qualified Imp undmed t Inspector <br />/-2 frt <br />Date <br />Poor <br />Extensivef mk Few None <br />No <br />Page 1 <br />5). Is seepage occurring through the dam? Yes <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 />Date <br />Yes <br />Yes <br />7 13'`O 6 <br />es " tonal ngine <br />No <br />No <br />r�- <br />No v' <br />evkl 1 net „f � 4N epi <br />Ca pu.Ct 0,4 / 1 4 -106'•- <br />n eat, CZ_ Itir <br />Directing Inspec Icih = <br />„ <br />f3 <br />