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ANNUAL SEDIMENTATION POND INSPECTIONI REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: New Elk <br />NPDES ID. No.: <br />Inspection Period: <br />Inspection Date: <br />None: Containment Area RDA-SE <br />Fourth Quarter 2009 <br />12/03/09 <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 ew Poor <br />2). Erosion forming Gullies: Extensive Some None <br />3). Is wave action causing erosion: <br />On the Upstream embankment? Yes No <br />4). Erosion of the downstream toe of the embankment? Yes No (i <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 />No (-- <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes <br />Elevation @ top of: _ e <br />Elevation of Water Surface: <br />Elevation to top of Sediment: <br />OBSERVA <br />til <br />No <br />A elau/ <br />r-1 Pa vi -/-) GcX /a tax .?,r. /Vo tf-r f ck, i.f e'` DUfirr-1 <br />A,,,, a4 <br />M HA Qualified Impoundmen nspector <br />Date <br />Pr fessional Engi a Dire ti g nspee? ,"',/, <br />Date ` 6 7 ?cr^T !.„ <br />^ f ? r P <br />n ? Q f a <br />t <br />Page 1