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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br /> <br />NAME Dennis Jones DATE: <br />INSPECTOR S . <br />NPDES I.D. NO.: N/A <br />FACILITY CONFIGURATION: Final Pit Impoundment <br />SITE NAME: PeaCoCo Reservoir <br />MINE NAME: Seneca II Mine (Seneca Coal Co) <br />MINE I.D. NO.: CMLRD Permit No. C-82-057 <br />DATE LAST INSPECTION: <br />LOCATION: SWl/4 NWV44, Sec. 2, TSN, R87W <br />LOCATION: 7.1 mi. SE of Hayden, CO <br />OWNER'S REP.: Roy Karo, Gen Mgr <br />Circle or write in appropriate response <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes <br /> inches <br />2. Lift thickness: <br />3. Compaction according to approved plan: Yes <br />4. Burning (specify extent and location): No <br />5. Angle of slope (degrees) degrees <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: N/A <br /> At isolated points on embankment slopes: Yes <br /> At natural hillside: Yes <br /> Over widespread areas: Yes <br /> From downstream foundation area: Yes <br /> <br />"Boils" beneath stream or ponded water: <br />Yes NNo <br />7. Cracks or scarps on crest: Yes <br />8. Cracks or scarps on slope: Yes <br />9. Sloughing or bulging on slope: Yes <br />10. *Major erosion problems: Yes No <br />11. Surface movements in valley bottom or on hillside: Yes No <br />12. *Erosion of toe: Yes N <br />13. *Water impounded against toe: Yes N <br />14. Existing embankment freeboard: (normal = 6.11) G•? feet <br />15 Increase Decrease in water level: feet <br />. <br />16. Cracks, bulging, or erosion on upstream face: Yes No <br />17. Visible sumps or sinkholes in slurry surface: N/A <br />18. *Clogging <br />Yes <br />62 <br /> Spillway channels and pipes: <br /> N/A <br /> Decant system: <br /> Diversion ditches: N/A <br />19. *Cracking or crushing of pipes <br />Yes <br />(No) <br /> Spillway pipes: <br /> N/A <br /> Decant system: <br />20. Trash racks clear and in place: N/A <br /> 13 1J, <br />21. Discharge rate (gpm) <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.