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PERIODIC INSPECTION FORK <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Micha At av't a DATE: __03/30/99 <br />NPDES I.D. NO.: co-0000221 0_P_ 005 <br />FACILITY CONPIGURATION: Crnea-Valley Pond DATE LAST INSPECTION: 12/11/98 <br />SITE NAME: Pond 1005 LOCATION: NWi, cWi, ¢ayr. t0 TSN A88W <br />MINE NAME: Seneca 7I-W Mina (can a -oat -01 LOCATION: 8 mi. S of Hayden, CO <br />MINE I.D. NO.: CMT.Rn Permit No_ c-82-057 OWNER'S REP.: Brad Brown Gen M~- <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: ee No N/A <br />2. Lift thickness: ~Z in. N/A <br />3. Compaction according to approved plan: ee No N/A <br />4. Burning (specify extent and location): Yee No <br />5. Angle of elope: 3.5:1 upstream, 2.5.1 downstream Total = 6:1 N/A <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: Yee No <br /> At isolated points on embankment elopes: Yee o N/A <br /> At natural hillside: Yee N/A <br /> Over widespread areas: Yee N/A <br /> From downstream foundation area: Yee o N/A <br /> "Boils" beneath stream or ponded water: Yee o N/A <br />7. Cracks or scarps on treat: Yee ~ N/A <br />8. Cracks or scarps on elope: Yee ~ N/A <br />9. Sloughing or bulging on elope: Yee ~ N/A <br />10. *Major erosion problems: Yee ® N/A <br />il. Surface movements in valley bottom or on hillside: Yee ® N/A <br />12. *Eroeion of toe: Yee ~ N/A <br />13. *Water impounded against toe: Yes ~ N/A <br />14. Existing embankment freeboard: a~oroximately 7.4 feet <br />15. _]L- Increase Decrease in water level: 2.0 feet <br />16. Cracks, bulging, or erosion on upstream face: Yee No ~g <br />17. Visible eumpe or sinkholes in slurry surface: Yea No ,`FN.f~?B~~ <br />18. *Clogging <br /> Spillway channels and pipee: Yee ~ N A <br /> Decant eystem: Yes No <br /> Diversion dit thee: Yee ® N/A <br />19. *Cracking or crushing of pipee <br /> Spillway pipes: Yes ~ N A <br /> Decant system: Yee No /A <br />20. Trash racks clear and in place: ee No N/A <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 />