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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(17) <br />Mine: Lorencito <br />NPDES ID. No.: Pond #10A-Loadout <br />Inspection Period: 2ND Quarter 2005 <br />Inspection Date: 6/29!05 <br />General Description or Reference to Site Plan: <br />This pond is kxated 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 />subsurtace strata. Side copes are less than 2H:1 V. The pond discharges into Lorencito <br />Canyon Creek. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. Excellent odes Few Poor <br />2). Erosion forming Gullies: Extensive Some <br />3). Is wave action causing erosion: <br />On the Upstream embankment? <br />At the principal spillway inlet? <br />4). Erosion of the downstream tce of the embankment? <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? <br />Could this seepage cause potential instability? <br />Few None <br />Yes <br />Yes <br />Yes <br />Yes <br />No `~ <br />No v <br />No v <br />No <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 r/ No <br />Yes rl No <br />Yes r/ No <br />Yes No v <br />Just starting None <br />Page 1 of 2 <br />