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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(17} <br />Mine: Lorencito <br />NPDES ID. No.: Pond #'I OA-Loadout <br />Inspection Period: Third Quarter 2007 <br />Inspection Date: 9/21/07 <br />General Description or Reference to Site Plan: <br />This pond ~ located east of the coa{ toadout facility and south of the railroad tracks <br />The pond is partially incised into alluvium and the embankment keyed into the <br />subsurface strata. Side sopes are less than 2H:1 V. The pond discharges into Lorenato <br />Canyon Cr~eek_ <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. Excellent Mod erat~e. Few Poor <br />,%--~. <br />2). Erosion forming Gullies: Extensive Some ~w> None <br />3). Is wave action causing erosion: <br />On the Upstream embankment? Yes No ;~- <br />At the principal spillway inlet? Yes No ~_._. <br />4). Erosion of the downstream boe of the embankment? Yes No ~ ___ - <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? <br />Coukt this seepage cause potential instatNlity? <br />Yes No ~~:- <br />PRINCIPAL SPILLWAY <br />1). Is the principal spillway system in working order? <br />2). Is the inlet free of debris and restrictive material? <br />3). Is the discharge outlet free of restrictive material? <br />4). Is erosion occurring at the discharge outlet? <br />Evaluate the severity: Extensive Moderate <br />Yes /,--~- No <br />Yes `--- No <br />Yes i.------ _ No <br />Yes No i ~~" <br />Just starting None <br />Page 1 of 2~ <br />