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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(17) <br />Mine: Lorencito <br />NPDES ID. No.: <br />Inspection Period: <br />Inspection Date: <br />Pond #6 <br />First Quarter 2010 <br />3/10/10 <br />General Description or Reference to Site Plan: <br />This pond is located South 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 2HAV. The primary discharges south into Jeff Canyon drainage. <br />EMBANKMENT <br /> <br />1). Adequacy of the vegetative cover: Excellent Mo derate Few Poor <br />2). Erosion forming Gullies: Extensive o mIe Few None <br />3). Is wave action causing erosion: <br /> On the Upstream embankment? Yes No <br /> At the principal spillway inlet? Yes No t/ <br />4). Erosion of the downstream toe of the embankment? Yes No !i <br /> Cause of erosion can be attributed to: <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? Yes No <br />2). Is the inlet free of debris and restrictive material? Yes No <br />3). Is the discharge outlet free of restrictive material? Yes L. - No <br />4). Is erosion occurring at the discharge outlet? Yes No <br /> Evaluate the severity: Extensive Moderate Just starting None <br />Page 1 of 2