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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(17) <br />Mine: Lorencito <br />NPDES ID. No.: Pond #8 <br />inspection Period: Fourth Quarter 2007 <br />Inspection Date: 1213/07 <br />General Description or Reference to Site Plan: <br />This pond is located north 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:1V. The primary discharges north into a small drainage. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. <br />2). Erosion forming Gullies: <br />3). Is wave action causing erasion: <br />On the Upstream embankment? <br />At the principal spillway inlet? <br />Excellent Moderate ~ Few Poor <br />Extensive Few None <br />Yes No f~ <br />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? <br />Could this seepage cause potential instability? <br />Yes No,(~ <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 at the discharge outlet? <br />Evaluate the severity: Extensive Moderate <br />Yes ~ No <br />Yes //~ No <br />Yes vim" No <br />Yes No 1/ <br />Just starling None <br />Page 1 of 2 <br />