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<.; <br />W ~.`ti: ~ ~ <br />QUARTERLY SEDIMENTATION POND INSPECTION REPORT` '~~~ ~~~•"""~ <br />'r~: ,_ r;an; ,:; ;:.:,f s..; . -CDMR Rule'4.05.9(17) „-s aflt ..~, . R- , -:;,:~ %; <br />__--- - ECEIVED <br />Mine: Lorencito FEB Z 5 2U03 <br />NPDES ID. No.: Pond #6 <br />Inspection Period: _ 4`" Quarter 2002 _ ~ ~ ;)7ivisian of Minerals and Geology <br />Inspection Date: 12/26/02 <br />General Description or Reference to Site Plan: <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 drainage. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover: Excellent Moderate Few <br />2). Erosion forming Gullies: Extensive Some Few <br />3). Is wave action causing erosion: <br />On the Upstream embankment? <br />At the principal spillway inlet? <br />4). Erosion of the downstream toe of the embankment? <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? <br />Could this seepage cause.poter <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 />Page 1 of 2 <br />oar <br />Non <br />Yes No v <br />Yes No v <br />Yes No ,, <br />Yes No v <br />Yes v No <br />Yes ~ No <br />Yes /i No <br />Yes No ~ <br />Just staging None <br />