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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(17) <br />Mine: Lorencito <br />NPDES ID. No.: Pond #9A <br />Inspection Period: 41h Quarter 2003 <br />Inspection Date: 12130103 <br />Genera{ Description or Reference to Site Ptan: <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. <br />Side slopes are less than 2H:1 V. 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 <br />Yes <br />No 1~ <br />No i/ <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion can be attributed to: <br />Excellent odera e Few Poor <br />Extensive Some ~ None <br />No y <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage cause potential instability? <br />N o i% <br />PRINCIPAL SPILLWAY <br />1). Is the principal spillway system in working order? <br />2). Is the inlet free of debris and restriciive 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 />Page 1 oft <br />Yes li No <br />Yes '-- No <br />Yes /% No <br />Yes <br />Just starting <br />None <br />No <br />