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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />Mine: Lorencito <br />NPDES ID. No.: <br />Inspection Period: <br />Inspection Date: <br />CDMR Rule 4.05.9(17) <br />Pond #9A (South) <br />First Quarter 2011 <br />3/10/11 <br />General Description or Reference to Site Plan: <br />This pond is located south-east of the area of mining scheduled for 2001-02. The pond <br />is partially incised into bedrock and the embankment keyed into bedrock. Side slopes <br />are less than 2HAV. The primary spillway discharges south into Jeff Canyon. <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 />At the principal spillway inlet? <br />Yes No L <br />Yes No C-- <br />4). Erosion of the downstream toe of the embankment? Yes No (i <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage cause potential instability? <br />No ('PRINCIPAL SPILLWAY <br /> <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 />Excellen ode a Few Poor <br />Extensive Some None <br />Yes No <br />Yes /i No <br />Yes /?-- No <br />Yes No <br />Just starting None <br />Page 1 of 2