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<br />ANNUAL SEDIMENTATION -POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: Lorencito <br />NPDES 1D. No. Pond #9 (North)- <br />Inspection Period: Fourth Quarter 2009 <br />Inspection Date. 11128/2009 <br />General Description or Reference to Sim Plan: <br />This pond, is_tocated-rwrth-easLof_the area of mining during-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 spillway discharges north' into a small unnamed <br />drainage. - <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. Excellent oderat Few Poor <br />2). Erosion forming Gullies: Extensive Some & None <br />3). is wave action causing erosion: No ?-' <br />On the Upstream embankment? Yes <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 No L--- <br />Could this seepage cause potential instability? <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 afthe discharge outset? . <br />Evaluate the severity. Extensive Moderate <br />Yes z- No <br />Yes No <br />Yes No <br />Yes No .. <br />Just starting None <br />Page 1