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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4A5.9(17) <br />Mine: New Etk RDA Containment SW <br />NPDES ID. No.: <br />Inspection Period: <br />Inspection Date: <br />None <br />Fourth Quarter 2007 <br />12/28/07 <br />General Description or Reference to Site Plan: <br />This partially incised containment basin is anon-discharging facility designed to contain run-off <br />from the area west of the RDA belt conveyor and south of highway 12. <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 />No ~--- <br />No~_ <br />5). Is seepage occurring through the dam? Yes No ~~~ <br />Could this seepage cause potential instability? <br />SEDIMENT STORAGE CAPACITY <br />1). Has the design storage capacity of the reservoir been surpassed? <br />Yes <br />OTHER OBSERVATIONS: <br />No [,~ <br />Explain: <br />«VV <br />SHA Qualified Impoundme Inspector <br />Date L Zg f d ~ <br />Excellent ode Few Poor <br />Extensive Few None <br />