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PERIODIC INSPECTION FORK <br />Water, Sedimeat, or Slurrp Impoundmeata <br />INSPECTOR'S NAME: Tom Wainwricht DATE: 06/11/93 <br />NPDES I.D. NO.: N/A <br />FACILITY CONFIGURATION: Final Pit Impoundment DATE LAST INSPECTION: 03/18/93 <br />SITE NAME: PeCoCo Reservoir LOCATION: NWT, Sec. 2, T6N, R87W <br />MINE NAME: Seneca Mine (Peabody Coal Co.) LOCATION: 7.1 mi. SE of Hayden, CO <br />MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Scott Williams, Sunt. <br />Circle or write in appropriate response <br />1. <br />2. <br />3. <br />4. <br />5. <br />6. <br />Foundation preparation (removal of vegetation, stumps, topsoil: <br />L1ft thickneeae <br />Compaction according to approved plan: <br />Burning (specify extent and location): <br />Angle of elope (degrees) <br />*Seepage (specify location, color, and approximate volume) <br />No <br />inches <br />~7 No <br />Yee ~~ <br />degrees <br />From underdrain pipes: Yee ~io~ <br />At isolated points on embankment elopes: Yee cN~ <br />At natural hillside: Yee <br />Over widespread areas: Yee gyp? <br />From downstream foundation area: Yee ~ <br />"Boils" beneath stream or ponded water: Yes <br />7. <br />8. <br />9. <br />10. <br />11. <br />12. <br />13. *Water impounded against toe: <br />14. <br />15. <br />16. <br />17. <br />18. <br />Cracks or scarps on crest: <br />Cracks or scarps on elope: <br />Sloughing or bulging on elope: <br />*Major erosion problems: <br />Surface movements in valley bottom or on hillside: <br />*Eroeion of toe: <br />Existing embankment freeboard: <br />Increase Decrease in water level: Same <br />Cracks, bulging, or erosion on upstream face: <br />Visible sumps or sinkholes in slurry surface: <br />*Clogging <br />Spillway channels and pipes: <br />Decant system: <br />Diversion ditches: <br />19. *Cracking or crushing of pipes <br />Spillway pipes: <br />Decant system: <br />20. Trash racks clear and in place: <br />Yee ~~ <br />Yee ~N <br />Yee ~IQ~ <br />Yee No <br />Yee <br />Yee ~° <br />Yee <br />5 feet <br />_ feet <br /> <br />Yee / ~ <br />yNp~ <br />Yee <br />Yee <br />Yee o <br />Yee N <br />Yee <br />Yee <br />Yee No <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 <br />in these items should normally be described (extent, location, volume, etc.) in the apace on <br />the back of this sheet. <br />