Laserfiche WebLink
ANNUAL SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: Lorencito <br />NPDES ID. No.: Pond #5 <br />inspection Period: Fourth Quarter 2009 <br />Inspection Date: 11/28/2009 <br />General Description or Reference to Site Plan: <br />This pond is located north-east 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 are less than 2H: IV. The primary spillway discharges north into a small unnamed <br />drainage. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. Exceuenz rvr ??W <br />2). Erosion forming Gullies: Extensive Some Few None <br />3). Is wave action causing erosion:' No >< <br />On the Upstream embankment? Yes <br />At the principal spillway inlet? Yes No <br />4). Erosion of the downstream toe of the embankment? Yes No <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? Yes No <br />Could this seepage cause potential instability? <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 />Yes %, No <br />Yes X_ No <br />Yes No <br />Yes No X <br />Just starting None <br />Page 1