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QUARTERLY SEDIMENTATfON 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 ~7 <br />Thins Quarter 2007 <br />9/21!07 <br />General Description or Reference to Site Pian: <br />This pond is located south 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 south into Jeff Canyon <br />drainage. <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 />No f-'' <br />No ~---- <br />4). Erosion of the downstnram toe of the embankment? Yes No v' <br />Cause of erosion can be attributed th: <br />5). Is seepage occurring through the dam? Yes No ,i' <br />Could this seepage cause potential instability? <br />PRINCIPAL SPILLWAY <br />1). Is the prinapal spillway system in working, order? Yes ~"- <br />2). Is the inlet free of debris and t+estrictive material? Yes r~- <br />3). Is the discharge outlet free of restrictive material? Yes L--- <br />4). Is erosion occurring at the discharge outlet? Yes <br /> Evaluate the severity: Extensive Moderate Just starting <br />Excellent ~ odera~ Few Poor <br />Extensive Some ~e~ None <br />No <br />No <br />No <br />No t/ <br />None <br />Page 1 of 2 <br />