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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />n <br />INSPECTOR'S NAME: ~'J P1n. vl:S ~~ ~hQS DATE: ~~.5'~ <br />NPDES I.D. NO.: CO-0000221 D.P. 016 <br /> <br />FACILITY CONFIGURATION: Cross-Vallev Pond <br />DATE LAST INSPECTION: ~j <br />~' <br />~~ '~ <br />SITE NAME: Pond #016 LOCATION: NEi/a SEA Sec. 27. TSN, R88W <br />MINE NAME: Seneca II-W Mine (Seneca Coal Co l LOCATION: 8 mi. S of Ha vden, CO <br />MINE I.D, NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Greoa Kit chen, Gen Mar <br />Circle or write in appropriate response <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes <br />2. Lift thickness: in. <br />3. Compaction according to approved plan: Yes <br />4. Burning (specify extent and location): No <br />5. Angle of slope: 3:1 upstream, 3:1 downstream Total = 6_1 <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: <br /> At isolated points on embankment slopes: Yes o N/A <br /> At natural hillside: Yes No N/A <br /> Over widespread areas: Yes No N/A <br /> From downstream foundation area: Yes No N/A <br /> "Boils" beneath stream or ponded water: Yes No N/A <br />7. Cracks or scarps on crest: e No N/A <br />8. Cracks or scarps on slope: es No N/A <br /> <br />9. <br />Sloughing or bulging on slope: nn <br />N/A I'a/ <br />10. *Major erosion problems: Yes ~ <br />No N/A // <br />11. Surface movements in valley bottom or on hillside: e® No N/A <br />12. *Erosion of toe: Yes o N/A <br />13. *Water impounded against toe: Yes N N/A <br />14. Existing embankment freeboard: (normal = 7.0') ~-,~ feet <br />15. Increase Decrease in water level: t~.o ~ ~w aSL feet <br />16. Cracks, bulging, or erosion on upstream face: Yes ~ N/A <br />17. Visible sumps or sinkholes in slurry surface: 1$ <br />18. *Clogging <br /> Spillway channels and pipes: Yes Q N/A <br /> Decant system: N/A <br /> Diversion ditches: NLA <br />19. *Cracking or crushing of pipes <br /> <br /> Spillway pipes: Yes ~ N/A <br /> Decant system: ~A <br />20. Trash racks clear and in place: 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 in <br />these items should normally be described (extent, location, volume, etc.) in the space on the <br />back of this sheet. <br />