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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 {South) <br />Inspection Period: Fourth Quarter 2007 <br />Inspection Date: 1213/07 <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 2H;1 V. The primary spillway discharges south into Jeff Canyon. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover: <br />2). Erosion forming Guilies: <br />3). Is wave action causing erosion: <br />On the Upstream embankment? <br />At the principal spillway inlet? <br />Excellent odes Few <br />Extensive Some <br />4). Erosion of the downstream toe of the embankment? <br />Cause of erosion can be attributed to: <br />Yes <br />Yes <br />Yes <br />Poor <br />None <br />No ~~ <br />No ~/ <br />No L/ <br />5). !s seepage occurring through the dam? <br />Could this seepage cause potential instability? <br />Yes No c~ <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 1Vloderate <br />Yes !l No <br />Yes ~ No <br />Yes G---~ No <br />Yes No ~~ <br />Just starting None <br />Page 1 of 2 <br />