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ANNUAL SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: Lorencito <br />NPDES ID. No.: Pond #7 <br />Inspection Period: First Quarter 2007 <br />Inspection Date: 3/30!2007 <br />General Description or Reference to Site Plan: <br />This pond is !opted south of the area of mining during for 2001-02. The pond <br />is partially incised into bedrock and the embankment keyed into bedrock. <br />Side slopes an: less than 2H:1 V. The primary discharges south into Jeff Carryon <br />drainage. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. <br />2). Erosion forming Gullies: <br />3). Is wave action posing erosion: <br />On the Upstream embankment? <br />At the principal spillway inlet? <br />Excellent erat Few Poor <br />Extensive Some t None <br />Yes <br />Yes <br />4). Erosion of the downstream toe of the embankmeni? Yes <br />Cause of erosron qn be atlributed to: <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage pose potential instabilitt/? <br />No v <br />No ~.~. <br />No `~ <br />No V <br />PRINCIPAL SPILLWAY <br />1). Is the principal spillway system in working order! <br />2). Is ttre inlet free of debris and restricWe material? <br />~) ~s~tt1G discharge outlet flee of restrictive. material? <br />_' 4).`is f~sios ocxurting at the discharge outlet? <br />Eva)rta~e'Bre severity: Extensive Moderate <br />Yes / No <br />Yes v No <br />Yes V No <br />Yes No <br />Just starting None <br />Page 1 <br />