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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: First Quarter 2007 <br />Inspection Date: 03/30/07 <br />General Description or Reference to Site Plan: <br />This containment arm lies East of the RDA refuse conveyor and south of Hwy. 12. tt is designed <br />to contain run-off from this arrss of the RDA bdt conveyor Specifications are detailed on the <br />Containment Area RDASE As bu0t drawing dated 2261'93. The stage storage curve shows <br />top of embankment at 7413' with sedmrent aaarmulation th 7412.1'. <br />tcfaIIBANIOMENT <br />1). Adequacy of the vegetatnre cover. <br />2). F~osion forming Gullies: <br />3). Is wave action causug erosan: <br />On the Upstream embankment? <br />Excellent Moderate ® Poor <br />Extensive ~ Few None <br />Yes <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring thrtwgh the dam? Yes <br />Could th~ss seepage cause potential instabifity'1 <br />No ~ <br />No ~ <br />No L--~ <br />S~IMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes <br />Ele+ratiorr ~ top of _~ <br />Elevation of water Surface: <br />Elevation to top of Sediment <br />OTHER Ot3St_RVATtONS <br /> <br />No <br />L- <br />+7:.:t'S;i ~du~dri:.'CI I~ri}nliirnlriiariif lirSrtitiWr <br />r3lao~o-r <br />D~~ <br />"r'i.,ir,Syuiirai ~//S--~uk:er D'uectirtg tns~edlltsrr_ -. ; . ; . '-, <br />D~.e ~ - - - ' -- - <br />Page 1 _ : _=~ <br />