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<br />PERIODIC INSPECTION FORM <br />Hater, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Tom Wain <br />NPDES I.D. NO.: N A <br />FACILITY CONFIGURATION: Fina Pit Imooun ment_ <br />SITE NAME: PeCoCo Reservoir <br />MINE NAME: Seneca Mine (Pea o v Coa Comoanv)_ <br />MINE I.D. NO.: CMLRD Permit No. C-82-057 <br />DATE: 09 /22/92 <br />DATE LAST INSPECTION: NS/97(g9 <br />LOCATION: <br />LOCATION: mi S o Hav en. CO <br />OWNER'S REP.: <br />Circle or write in aooropriate resaonse <br />1. Foundation preparation (removal of vegetation, stumps, topsoil?) Yes No <br />2. Lift thickness (inches) inches <br />3. Compaction according to approved plan Yes No <br />4. Burning (specify extent and location) Yes <br />5. Angle of slope (degrees) iB..fi_ degrees <br /> <br />6. * <br />Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes Yes o <br /> At isolated points on em an ment s opes Yes No <br /> At natural hillside Yes o <br /> Over widespread areas Yes o <br /> From downstream foundation area Yes o <br /> "Boils" beneath stream or ponded water Yes o <br />7. Cracks or scarps on crest Yes <br />8. Cracks or scarps on slope Yes ©o <br />9. Sloughing or bulging on slope Yes <br />10. *Major erosion problems Yes ©o <br />11. Surface movements in valley bottom or on hillside Yes No <br />12. *Erosion of toe Yes ©o <br />13. *Water impounded against toe Yes <br />14. Existing embankment freeboard (feet) 5 feet <br />15. Increase Decrease in water level (feet) Sam feet <br />16. Cracks, bulging, or erosion on upstream face Yes No <br />17. Visible sumps or sinkholes in slurry surface Yes No <br /> <br />18. * <br />Clogging <br /> Spillway channels and pipes Yes <br /> Decant system Yes o <br /> Diversion ditc es Yes o <br />Ig *Cracking or crushing o pipes <br /> Spillway pipes Yes No <br /> Decant system Yes o <br />20. Trash racks clear and in place es No <br />*Ma jor adverse changes in these items could cause instability and should be reported to the <br />Eng ineering Manager and Mine Superintendent for further evaluation. Adverse conditions note <br />in these items should normally be described (extent, location, volume, etc.) in the space on <br />the back of this sheet. <br />