Laserfiche WebLink
PERIODIC INSPECTION FORK <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Michael Altavilla DATE: 12/20/99 <br />NPDES I.D. NO.: CO-0000221 D_P. 0 12 <br />FACILITY CONFIGURATION: Cross-Valle y Pond DATE LAST INSPECTION: _09/22/99 <br />SITE NAME: Pond X012 LOCATION: NEB NWT _cec. 19 'i'SN R87W <br />MINE NAME: Yoaet Mine(Seneca Coal C ol LOCATION: 8.5 mi. SE of Mayden,, CO <br />MINE I.D. NO.: CMLBD Permit No. C-9 4-082 OWNER'S REP.: Brad_Erown, Gen Mqr <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: ee No N/A <br />2. Lift thickness: ~.Z in. N/A <br />3. Compaction according to approved plan: ~ No N/A <br />4. Burning (specify extent and location): Yes No <br />5. Angle of elope: 3.0:1 upstream, 3.0:1 downstream Total = 6.0:1 N/A <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: Yes No <br /> At isolated points on embankment slopes: Yes N/A <br /> At natural hillside: Yee ~ N/A <br /> Over widespread areas: Yes N/A <br /> From downstream foundation area: Yes o N/A <br /> "BOile" beneath stream or ponded water: Yes o N/A <br />7. Cracks or scarps on treat: Yes N N/A <br />B. Cracks or scarps on elope: Yes N/A <br />9. Sloughing or bulging on elope: Yee o N/A <br />10. *Major erosion problems: Yee N N/A <br />11. Surface movements in valley bottom or on hillside: Yes o N/A <br />12. *Erosion of toe: Yes N/A <br />13. *Water impounded against toe: Yes N N/A <br />14. Existing embankment freeboard: annrox3mately 30.O feet <br />15. ~ Increase Decrease in water level: 3.0 feet <br />16. Cracks, bulging, or erosion on upstream face: Yea No N/A <br />17. Visible sumps or sinkholes in Blurry surface: Yes No <br />18. *Clogging <br /> Spillway channels and pipes: Yee No N A <br /> Decant system: Yee No <br /> Diversion ditches: Yee No A <br />19. *cracking or crushing of pipes <br /> Spillway pipes: Yea ~ N A <br /> Decant system: Yes No A <br />20. Trash racks clear and in place: ea No N/A <br />*Major adverse changes in these items could cause instability and should be reported to <br />the Engineering Manager and Mine Superintendent for further evaluation. Adverse <br />conditions noted in these items should normally be described (extent, location, volume, <br />etc.) in the apace on the back of this sheet. <br />