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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rute 4.05.9(17) <br />Mine: Lorencito <br />NPDES ID. No.: Pond fE9A <br />Inspection Period: First Quarter 2005 <br />Inspection Date: 3/29/06 <br />General Description or Reference to Site Plan: <br />This pond is located south-east of the area of mining scheduletl for 2001-02. The pond <br />is partiaity 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 />Excellent odes Few Poor <br />Extensive Some t~Fe None <br />Yes <br />Yes <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion can be attributed to: <br />No ~ <br />Nom <br />No L~ <br />5). Is seepage occurring through the dam? <br />Could this seepage cause potential instability? <br />PRiNCfPAL SPILLWAY <br />1). Is the principal spillway system in working order? <br />2). Is the inlet hee 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 !ice <br />Yes `~ No <br />Yes t-- No <br />Yes ~~~ No <br />Yes No L/ <br />Just starting None <br />Page 1 of 2 <br />