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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: First Quarter 2003 <br />Inspection Date: 3/31/03 <br />General Description or Reference to Site Plan: <br />This pond is located east of the coal loadout facility and south of the railroad tracks <br />The pond is partially incised into alluvium and the embankment keyed into the <br />subsurface strata. Side sopes are less than 2H:1V. The pond discharges into Lorencito <br />Canyon Creek. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover: Excellent Moderate Few Poor <br />~ 2). Erosion forming Gullies: Extensive Some ~ 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 (/ <br /> Could this seepage cause potential instability? <br /> <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 ~ <br />Yes ~ <br />Yes // <br />Yes <br />Just starting None <br />No <br />No <br />No <br />No ~ <br />Page 3 <br />