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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 RDASW <br />Inspection Period: First Quarter 2007 <br />Inspection Date: 03/30/07 <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 />tp contain run-off from this area of the RDA heft conveyor. Spectfiptrons a2 detailed on the <br />Containment Area RDASE A5 built drawing dated 424193. The stage storage curve shows <br />top of embankment at 7415' with sedmrent aocumulafion m 7413.5'. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. <br />2). Erosion funning Gullies: <br />3). Is wave action posing erosion: <br />On the Upstream embankment? <br />Excellent ~ Few Poor <br />Extensive me Few None <br />Yes <br />No ~ <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion pn be attributed to: <br />No v <br />5). Is seepage oocunirtg through the dam? Yes <br />Could ih~ seepage pose potential instabrTily~. <br />No !i <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage ppacily of the reservoir been surpassed? <br />Yes <br />Elevafion ~ top of <br />Elevation of Water Surface: <br />Elevation to top of SedimenC <br />OTHF1t <br />NI:i~~~11 hru_ n~rs <br />Qualified Impoundment spector <br />I~ ~~~~ <br />No ~ <br />v ~- _ <br />Tonal Engin r Di ng nspegtloi>:- --_ ~ . " , <br />_ _ <br />Date ~ ~ ~4 7 ~" .~ "- l - . ° =~ "` = '/ <br />f-_. --- <br />Page 1 ~ -- ."`" " <br />