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QUARTERLY SEDIMENTATION POND tNSPECTtON REPORT <br />CDMR Rule 4.05.9(17) <br />Mine: Lorencito <br />NPDES ID. No.: Pond #9A <br />Inspection Period: Fourth Quarter 2006 <br />Inspection Date: 12/26/06 <br />General Description or Reference to Ske Plan: <br />This pond is located southeast 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 2H:1 V. The primary spilMray discharges south into Jeff Canyon. <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 !i <br />Yes No c.- <br />4). Erosion of the downstream tce of the embankmerd? Yes No r, <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? Yes <br />Coukt this seepage cause potential instability? <br />No t~ <br />PRINCIPAL SPILLWAY <br />1). Is the principal spilM~ay system in working order? <br />2j. 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 />Excellent ~iloder~te Few Poor <br />Extensive Some ~e None <br />Yes `"" No <br />Yes ~-" ' No <br />Yes ~- No <br />Yes No is <br />Just starting None <br />Page 1 of 2 <br />