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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Michael Altavilla DATE: 06/27/97 <br />NPDES I.D. NO.: CO.0000221 D. P. 002 <br />FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: 03/20/97 <br />SITE NAME: Wadoe Impoundment #002 LOCATION: NWy. NES:. Sec. 34. T6N. R87W <br />MINE NAME: Seneca II Mine (Seneca Coal Col LOCATION: 7.1 mi. SE of Havden. CO <br />MINE I.D. NO.: CMLRD Permit No. C-80-005 OWNER'S REP.: Brad Brown. Gen Mar <br />Circle or write in appropriate response <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: Yes No <br />Lift thickness: in <br />Compaction according to approved plan: Yes No <br />Burning (specify extent and location): Yes No <br />Angle of slope: upstream, downstream Total = <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 />Cracl;s 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: See comments <br />Increase Decrease in water level: No chanoe <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 />Yea No <br />Yes <br />Yes •7~ <br />Yes No <br />Yes <br />Yes No <br />Yes No <br />Yes No <br />Yes ~O <br />Yes No <br />Yes No <br />Yes No <br />N/A feet <br />_ feet <br />Yes No <br />Yes No <br />Y~ <br />N/A <br />N A <br />/A <br />A <br />N/A <br />N~/~A <br />/A <br />Yes ~ N/A <br />Yes No <br />Yes <br />Yes No <br />Yes No <br /> 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 />