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PBRIODIC INSPECTION FORK <br />Water, Sadimeat, or Slurry Impoundments <br />INSPECTOR'S NAME: Michael Altavi7la DATE: 12/31/99 <br />NPDES I.D. NO.: CO-0000221 n P 00 <br />FACILITY CONFIGURATION: Incised Pond DATE LRST INSPECTION: OQf22/99 <br />SITE NAME: WadQe Im~oundmant i'007 LOCATION: P671, NR~_, cec_ 34, T6N, R87W <br />MINE NAME: sen aer~T Mi^eMine (ceneca Coal Co) LOCATION: 7.1 mi_ cx: of Hayden, CD <br />MINE I.D. NO.: C r.an P rmi No_ -80-OOS OWNER'S REP.: Brad Brown. Gen MQr <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: Yee No <br />2. Lift thickness: in. <br />3. Compaction according to approved plan: Yee No <br />4. Burning (specify extent and location): Yes No A <br />5. Angle of elope: upstream, downstream Total = /A <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: Yee No <br /> At isolated points on embankment elopes: Yee No <br /> At natural hillside: Yee No N/A <br /> Over widespread areas: Yee No N/A <br /> From downstream foundation area: Yes No <br /> "Boils" beneath stream or ponded water: Yee ~ N A <br />7. Cracks or scarps on Crest: Yee No N A <br />B. Cracks or scarps on elope: Yee No A <br />9. Sloughing or bulging on elope: Yee No <br />10. *Major erosion problems: Yee N N/A <br />11. Surface movements in valley bottom or on hillside: Yea No N/A <br />12. *Eroeion of toe: Yee No <br />13. *Water impounded against toe: Yee No <br />14. Existing embankment freeboard: see comments ~A feet <br />15. Increase Decrease in water level: No change feet <br />16. Cracks, bulging, or erosion on upstream face: Yee No N® <br />17. Visible sumps or sinkholes in slurry surface: Yee No <br />18. *Clogging <br /> Spillway channels and pipes: Yee No N A <br /> Decant system: Yes No <br /> Diversion ditches: Yee No N/A <br />19. *Cracking or crushing of pipes <br /> Spillway pipes: Yee No N A <br /> Decant system: Yes No /A <br />20. Trash racks clear and in place: Ye 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 apace on <br />the back of this sheet. <br />