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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: Second Quarter 2007 <br />Inspection Date: 627/07 <br />General Descrfpiion or Reference rA Site Plan: <br />This pond is located southeast of the area of mining scheduled for 2001-02. The pond <br />is partialty 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. Excellent era Few Poor <br />2). Erosion funning Gullies: Extensive Some ~ None <br />3). Is wave action causing erosion: <br />On the Upstream embankment? 'Yes No <br />At the principal spillway inlet? Yes No ~ <br />4). Erosion of the downstream toe of the embankment? Yes No ~ _, <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage pose potential instability? <br />No ~- <br />PRINCIPAL SPILLWAY <br />1). Is the principal spilNvay system in working ordefl <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 />Yes L No <br />Yes /~ No <br />Yes V No <br />Yes No v~ <br />Just starting None <br />Page 1 of 2 <br />