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- ,.•_ .. r <br />~ . <br />QUARTERLY SEDIMENTATION POND INSPECTION REPORT'=~`~° "3~~'`O' `~` <br />f,0i.. zi 3!175 ~ ~ 'c~i ~.i:.iplG '~ =n:'. ".... -. ...: 't '..:::N.R2eJ!_ .!` <br />- CDMR Rule 4.05.9(17) = <br />Mine: Lorencito - <br />NPDES ID. No.: Pond #8 <br />Inspection Period: 4~ Quarter 2002 _. ~ ' <br />Inspection Dates _ _ 12/26/02 _ _ __ <br />General Description or Reference to Site Plan: <br />This pond is located north 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:1 V. The primary discharges north into a small 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 ~- <br />No c_ <br />No <br />No ~ <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage cause potential instability? <br />Excellent Moderate Few Poor <br />Extensive Some Few None <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 />Yes ;_ No <br />Yes ri No <br />Yes ,~ No <br />Yes No <br />Just starting None <br />