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ANNUAL SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(15) <br />Mine: Lorencito <br />NPDES ID. No.: Pond #10A-Loadout <br />Inspection Period: Frst Quarter 2007 <br />Inspection Date: 3130!2007 <br />General Description or Reference to Site Plan: <br />This pond is located east of the coal badout facility and south of the railroad tracks <br />The pond is partialy incised into alluvium and the embankment keyed into the <br />subsurface straha. Side.sopes are less than 2H:1V. The pond discharges into Lorencito <br />Canyon Creek <br />1). Adequacy of the vegethtive cover Excellent Moderate ~ Poor <br />2). Erosion forming Gullies: Extensive Some ~ None <br />3). Is wave action causing erosion: <br /> On the Upstream embankment? Yes No ti <br /> At the principal spilMray inlet? Yes No (/ <br />4). Erosion of the downstream toe of the embankment? Yes No _tt <br /> Cause of erosion can be attributed to: <br />5). is seepage occurring through the dam? Yes No y <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).-Js~e discharge outlet free of restrk~ive material? <br />~.-"4).-.7s'ergsion oocurring at the discharge outlet? <br />Evelireite7he severity: Extensive Moderate <br />Yes !/' No <br />Yes v No <br />Yes ~/' No <br />Yes No v <br />Just starting None <br />Page 1 <br />