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INSPECTOR'S NAME: Dennis Jones <br />NPDES I.D. NO.: N/A <br />FACILITY CONFIGURATION: Final Pit Impoundment <br />SITE NAME: PeCoCo Reservoir <br />MINE NAME: Peabody Sage Creek Mine <br />MINE I.D. NO.: CDRMS Permit No. C- 2009 -087 <br />PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />DATE: 1- 9 1 <br />Circle or write in appropriate response <br />DATE LAST INSPECTION: /o C 3 ^ I 1 <br />LOCATION: SW'% NW' %, Sec. 2, T5N, R87W <br />LOCATION: 7.1 mi. SE of Hayden, CO <br />OWNER'S REP.: Mike Ludlow <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes <br />2. Lift thickness: inches <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 1 <br />At isolated points on embankment slopes: Yes o <br />At natural hillside: Yes No <br />Over widespread areas: Yes No <br />From downstream foundation area: Yes No <br />"Boils" beneath stream or ponded water: Yes o <br />7. Cracks or scarps on crest: Yes I o <br />8. Cracks or scarps on slope: Yes io <br />9. Sloughing or bulging on slope: Yes No <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 No <br />13. *Water impounded against toe: Ye N <br />14. Existing embankment freeboard: (normal = 6.1') 6 ° 1 feet <br />15. Increase Decrease in water level: Lip c-L . _ feet <br />16. Cracks, bulging, or erosion on upstream face: Yes N9) <br />17. Visible sumps or sinkholes in slurry surface: N/A <br />18. *Clogging <br />Spillway channels and pipes: Yes <br />Decant system: N/A <br />Diversion ditches: N/A <br />19. *Cracking or crushing of pipes <br />Spillway pipes: Yes (N9 <br />Decant system: N/A <br />20. Trash racks clear and in place: N/A <br />21. Discharge rate (gpm) C (p(,O t�. <br />c ! <br />N / I) <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 />