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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 2005 <br />Inspection Date: 12/28/05 <br />General Description or Reference to Site Plan: <br />This containment area lies East of the RDA refuse conveyor and south of Hwy. 72. It is designed <br />to contain runoff from this area of the RDA belt conveyor. Specifications are detailed on the <br />Containment Area RDA-SE As built drawing dated 2@6/93. 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. <br />2). Erosion forming Gullies: <br />3). Is wave action causing erosion: <br />On the Upstream embankment? <br />Yes <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion can be attributed to: <br />Excellent Moderate ew Poor <br />Extensiv ome Few None <br />No ~ <br />No G~ <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage pose potential instability? <br />No !/~ <br />SEDIMENT STORAGE CAPACITY <br />1). Has tl~e 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 />~~~~ ~~ <br />MSHA Qualified Impoundment Inspector <br />Date~Z'~B~OS <br />No ~ <br />Date ~ ,,.. _ • r ~ <br />~: Y15i? <br />Page 1 +* ~~_~~i - -~~- <br />