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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 #9A <br />1st Quarter 2004 <br />3/27/04 <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. <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: Excellent oderat Few Poor <br />2). Erosion forming Gullies: Extensive So me Fe None <br />3). Is wave action causing erosion: <br /> On the Upstream embankment? Yes No v <br /> At the principal spillway inlet? Yes Nom <br />4). Erosion of the downstream toe of the embankment? Yes No ~_ <br /> Cause of erosion can be attributed to: <br /> <br /> <br />5). Is seepage occurring through the dam? Yes No <br /> Could this seepage cause potential instability? <br /> <br /> <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 ~ 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 <br />