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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: M' ha 1 A7 av; la DATE: 09~25~97 <br />NPDES I.D. NO.: _ N~A <br />FACILITY CONFIGURATION: F+nal P'_ ImTo +n m n DATE LAST INSPECTION: 06/27/97 <br />SITE NAME: PeCoCo Reservoir LOCATION: SWk NWS~,yPr. _? TSN R87W <br />MINE NAME: Seneca II Mine (c n a oat -o) LOCATION: 7.1 m+. cF of Hayden sO _ <br />MINE I.D. NO.: .Mi.Rn pe m+ No_ --8 -057 OWNER'S REP.: Brad Brown, Gen Mar <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: ee No <br />2. Lift thickness: inches <br />3. Compaction according to approved plan: ee No <br />4. Burning (specify extent and location): Yee Qo <br />5. Angle of elope (degrees) degrees <br />6. *Seepage (specify location, color, and approximate volume) <br />From underdrain pipes: Yes <br />At isolated points on embankment slopes: Yes <br />At natural hillside: Yea <br />over widespread areas: Yee o <br />From downstream foundation area: Yes <br />"Boils" beneath stream or ponded water: Yee® <br />7. Cracks or acarpe on crest: Yee ~n o~ <br />8. Cracks or acarpe on elope: Yea C`rv~y' <br />9. Sloughing or bulging on slope: Yee <br />10. *Major erosion problems: Yee o <br />11. Surface movements in valley bottom or on hillside: Yee <br />12. *Eroeion of toe: Yes <br />13. *Water impounded against toe: Yee <br />14. Existing embankment freeboard: See comments 6.1 feet <br />15. Increase Decrease in water level: No chanoe feet <br />16. Cracks, bulging, or erosion on upstream face: Yee ®o <br />17. Visible sumps or sinkholes in slurry surface: Yee Q <br />18. *Clogging <br />Spillway channels and pipes: Yee (7~0~ <br />Decant eyetem: Yes ~~JS <br />D ivereion ditches: Yee <br />19. *Cracking or crushing of pipes <br />Spillway pipes: Yee <br />Decant system: Y0B ®o <br />20. Trash racks clear and in place: ee 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 />