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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Michael Altavilla DATE: 12/04/95 <br />NPDES I.D. NO.: CO-0000221 D.P. 008 <br />FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 09/25/95 <br />SITE NAME: Pond #008 LOCATION: SWY NWY.. Sec. 7. TSN. R86W <br />MINE NAME: Seneca II Mine (Seneca Coal Col LOCATION: 7.~ mi. S of Hayden. CO <br />MINE I.D. NO.: CMLRD Permit No. C-80-005 OWNER'S REP.: Scott Williams. Gen Mar <br />Circle or write in aoorooriate reanonse <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: ~ es No N/A <br />2. Lift thickness: 12 in. N/A <br />3. Compaction according to approved plan: ~ No N/A <br />4. Burning (specify extent and location): Yes No N/A <br />5. Angle of slope: 3:1 upstream, 3:1 downstream Total = 6:1 N/A <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: Yes No N/A <br /> At isolated points on embankment slopes: Yes <br /> At natural hillside: Yes N/A <br /> Over widespread areas: Yes N N/A <br /> From downstream foundation area: Yes o N/A <br /> "Boils" beneath stream or ponded water: Yes o N/A <br />7. Cracks or scarps on crest: Yes o N/A <br />8. Cracks or scarps on slope: Yes o N/A <br />9. Sloughing or bulging on slope: Yes o N/A <br />10. *Maj or erosion problems: Yes o N/A <br />11. Surface movements in valley bottom or on hillside: Yes o N/A <br />12. *Erosion of toe: Yes No N/A <br />13. *Water impounded against toe: Yes o N/A <br />14. Existing embankment freeboard: See comments 8.0 feet <br />15. Increase Decrease in water level: No chance feet <br />16. Cracks, bulging, or erosion on upstream face: Yes ~ N A <br />17. Visible sumps or sinkholes in slurry surface: Yes No <br />18. *Clogging <br /> Spillway channels and pipes: Yes N <br /> Decant system: Yes o N A <br /> Diversion ditches: Yes No A <br />19. *Cracking or crushing of pipes <br /> Spillway pipes: Yes FNoI Nlg <br /> Decant system: Yes o ~~ <br />20. Trash racks clear and in place: ~ No N/A <br />*Ma j or adverse changes in these items could cause instability and shou ld be reported to the <br />Eng ineering Manager and Mine Superintendent for further evaluation. Ad verse conditio ns noted <br />in these items should normally be described (extent, location, volume, etc.) in the space on <br />the back of this sheet. <br />