Laserfiche WebLink
QUARTERLY SEDIMENTATION POND INSPECTION REPORTi '~"~'=~` '~'''~ <br />_ ... ,.t~ __ ., °CDMR Rule 4.05:9(17) , -_ .... : , :.._ - .. _ <br />Mine: Lorencito <br />NPDES ID. No.: Pond #9 <br />Inspection Period__: 4th Quarter 2002 ' <br />Inspection Date: 12/26/02 <br />General Description or Reference to Site Plan: <br />This pond is located north-east 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 spillway discharges north into a small unnamed <br />drainage. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover: Excellent Moderate Few Poo <br />2). Erosion forming Gullies: Extensive om Few None <br />3). Is wave action causing erosion: <br /> On the Upstream embankment? Yes No ~ <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 v <br /> Could this seepage cause poten}ial instability <br />n n it e v .r _ <br />c <br />PRINCIPAL SPILLWAY <br />1). Is the principal spillway system in working order'? Yes ` No <br />2). Is the inlet free of debris and restrictive material? Yes ~ No <br />3). Is the discharge outlet free of restrictive material? Yes r~ No <br />4). Is erosion occurring at the discharge outlet? Yes r/ No <br /> Evaluate the severity: Extensive Moderate ust s/ t~-~ artier- None <br />Page 1 of 2 <br />