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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-N <br />Inspection Period: Fourth Quarter 2005 <br />Inspection Date: 12128/05 <br />General Description or Reference to Site Plan: <br />This containment area lies west of the RDA refuse conveyor and north 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-N As built drawing dated 4/22/93. The stage storage curve shows <br />top of embankment at 7419' with $.0' storage for the 25-yr 24-hr. evenk <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. Excellent odes Few Poor <br />2). Erosion forming Gullies: Extensive me Few None <br />3). Is wave action pusing erosion: <br />On the Upstream embankment? Yes No <, <br />4). Erosion of the downsUeam toe of the embankment? Yes No 1/ <br />Cause of erosion pn be attributed to: <br />5). Is seepage occurring through the dam? Yes No ~ <br />Could this seepage cause potential instabi)iti/1 <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes No y <br />Elevation @ toP ~ E.~.. ~i.+ ~C~rett~ > 7 tf/~ <br />Elevation of Water Surface: ~~ ~ - 9. S = 7YO 9. Y <br />Elevation to top of Sediment t9ss~ ..~~ tcc ~ D_S ~ ZyLd 9 <br />O ER O¢SERVATIONS ^ /~ <br />!w i5 o~vi d Cf Z'EfY C~/G~C.~N~. L. Jt~ 1~O C!p GM ~HrQ~ <br />J.-• ~t~~ <br />HA Qualfied Impoundment In pector <br />~. ~Zf3,/OS <br />Dam <br />~. ., u._ c <br />1. ~ ., =~ <br />.;~. <br />Page 1 • ~~=' ' <br />~,'' <br />`~11: ~~ <br />