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ANNUAL SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: Lorencito <br />NPDES ID. No.: <br />Inspection Period: <br />Inspection Date: <br />Pond #9A (South) <br />Fourth Quarter 2010 <br />12/3/2010 <br />General Description or Reference to Site Plan: <br />This pond is located south-east of the area of mining during for 2001-02. The pond <br />is partially incised into bedrock and the embankment keyed into bedrock. <br />Side slopes are less than 2HA V. The primary spillway discharges south into Jeff Canyon. <br />1 <br />EMBANKMENT <br />1). Adequacy of the vegetative cover: Excellent oderat Few Poor <br />2). Erosion forming Gullies: Extensive Some ew. None <br />3). Is wave action causing erosion: <br />On the:Upstream embankment? <br />At the principal spillway inlet? <br />4). Erosion of the downstream toe of the embankment? <br />Cause of erosion can be attributed to: <br />Yes No <br />Yes No L--- <br />Yes No C_- <br />5). Is seepage occurring through the dam? Yes No <br />Could this seepage cause potential instability? <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'±erosioh occurring at the discharge outlet? <br />EvAlu,a'te the severity: Extensive Moderate <br />Yes No <br />Yes j? No <br />Yes' No <br />Yes No L--' <br />Just starting None <br />Page 1