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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Tom Wainwrio ht DATE: 06/07/94 <br />NPDES I.D. NO.: CO-0000221 D.P. 008 <br />FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 03 /28/94 <br />SITE NAME: Pond #008 LOCATION: SW)C NW'~a, Sec. 7, TSN, R86W <br />MINE NAME: Seneca II Mine (Peabody Coal Co. ) LOCATION: 7.1 mi. S of Hay den, CO <br />MINE I.D. NO.: CMLRD Permit No. C-005-80 OWNER'S REP.: Scott Williams, Supt. <br />Circle Or write lII aODrODrlate re500RSe <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />Foundation preparation (removal of vegetation, stumps, topsoil: <br />Lift thickness: <br />compaction according to approved plan: <br />Burning (specify extent and location): <br />Angle of slope: 3.1 upstream, 3.1 downstream <br />*Seepage (specify location, color, and approximate volume) <br />From underdrain pipes: <br />At isolated points on embankment slopes: <br />At natural hillside: <br />Over widespread areas: <br />From downstream foundation area: <br />"Boils" beneath stream or ponded water: <br />Cracks or scarps on crest: <br />Cracks or scarps on slope: <br />sloughing or bulging on slope: <br />*Major erosion problems: <br />Surface movements in valley bottom or on hillside: <br />*Erosion of toe: <br />*water impounded against toe: <br />Existing embankment freeboard: <br />Increase X Decrease in water level: <br />Cracks, bulging, or erosion on upstream face: <br />Visible sumps or sinkholes in slurry surface: <br />+Clogging <br />Spillway channels and pipes: <br />Decant system: <br />Diversion ditches: <br />*Cracking or crushing of pipes <br />Spillway pipes: <br />Decant system: <br />Trash racks clear and in place: <br />Yes No <br />12 in <br />es No <br />Yes No <br />Total = 6.1 <br />Yes No <br />Yes o <br />Yes o <br />Yes o <br />Yes o <br />Yes o <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes No <br />Yes o <br />Yes No <br />7.3 feet <br />0.2 feet <br />Yes No <br />Yes No <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />Yes No N <br />Yes o <br />Yes No A <br />Yes ®o <br />Yes No N/ <br />es No N/A <br />*Major adverse changes in these items could cause instability and should be reported to the <br />Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted <br />in these items should normally be described (extent, location, volume, etc.) in the space on <br />the back of this sheet. <br />