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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 #5 <br />First Quarter 2011 <br />3/10/11 <br />General Description or Reference to Site Plan: <br />This pond is located West 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 21-1: 1V.. The primary discharges south into Cow Canyon drainage. <br />EMBANKMENT <br /> <br />1). Adequacy of the vegetative cover. Excellent oderate Few Poor <br />2). Erosion forming Gullies: Extensive Some /P6w None <br />3). Is wave action causing erosion: <br /> On the Upstream embankment? Yes No J <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 C? <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 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