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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Michael Alt avilla DATE: 09~22~99 <br />NPDES I.D. NO.: N~A <br />FACILITY CONFIGURATION: Final Pit Imnoun3ment DATE LAST INSPECTION: Qy~30~99 <br />SITE NAME: PeCoCo Reservoir LOCATION: cW3~ NW3. Sec_ ,~, T51;, R87W <br />MINE NAME: Senaca ii Mine (ceneca nal o) LOCATION: 7.1 mi. _cE of Rayd~n, CO <br />MINE I.D. NO.: eMT_.Rn Permit xo_ C-82-057 OWNER'S AEP.: Brad Brown Gen Mq~ <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: ea No <br />2. Lift thickness: inches <br />3. Compaction according to approved plan: ~ No <br />4. Burning (specify extent and location): Yee <br />5. Angle of slope (degrees) degrees <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipee: Yee <br /> At isolated points on embankment elopes: Yee No <br /> At natural hillside: Yee N <br /> Over widespread areas: Yee o <br /> From downstream foundation area: Yes <br /> "Boils" beneath stream or ponded water: Yes N <br />7. Cracks or scarps on crest: Yee No <br />8. Cracks or scarps on elope: Yee o <br />9. Sloughing or bulging on slope: Yes <br />10. *Major erosion problems: Yee o <br />11. Surface movements in valley bottom or on hillside: Yea <br />12. *Eroeion of toe: Yes <br />13. *Water impounded against toe: Yee o <br />14. Existing embankment freeboard: see comments 6.1 feet <br />15. Increase Decrease in water level: xo change feet <br />16. Cracks, bulging, or erosion on upstream face: Yee <br />17. visible sumps or sinkholes in Blurry surface: Yee N <br />18. *Clogging <br /> Spillway channels and pipee: Yes o <br /> Decant eyetem: Yee No <br /> Diversion ditches: Yes o <br />19. *Cracking or crushing of pipee <br /> Spillway pipee: Yee <br /> Decant eyetem: Yee <br />20. Trash racks clear and in place: es No <br />*Major adverse changes in these items could cau ee instability and should be reported to the <br />Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted <br />in these items should normally be described (extent, Location, volume, etc.) in the apace on <br />the back of this sheet. <br />