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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 <br />Inspection Period: Third Quarter 2005 <br />Inspection Date: 12/30/05 <br />General Description or Reference to Site Plan: <br />This pond is located southeast 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 Gullies: <br />3). Is wave action causing erosion: <br />On the Upstream embankment? <br />At the principal spillway inlet? <br />Yes <br />Yes <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion qn be attributed to: <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage cause potential instability! <br />Poor <br />None <br />No ~' <br />No `- <br />No /~- <br />No .l~- <br />PRINCIPAL SPILLWAY <br />1). Is the principal spilMray system in working ordeR <br />2). Is the inlet free of delxis and restrictive material? <br />3). is the discharge outlet free of restrictive material? <br />4). Is erosion occuning at the discharge outlet? <br />Evaluate the severity: Extensive Moderate <br />Excellent Moderate ew <br />Extensive Some ew <br />Yes `~ No <br />Yes ~-- No <br />Yes ~~' No <br />Yes No /~-- <br />Just starting None <br />Page 1 of 2 <br />