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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Tom W inwri ht DATE: 09/22/92 <br />NPD ES I.D. NO.: - D.P. 03 <br />FAC ILITY CONFIGU Diked Pond DATE LAST INSPECTION: 05/27 /92 <br />SIT E NAME: Northwest im oundment 003 LOCATION: SE'(.SW'h,Sec. ,. T f , <br />MIN E NAME: eneca ine ea o y oa o LOCATION: mi. o ay en, <br />MIN E I.D. N .: ermi - - OWNER'S RE~rott Williams, Supt <br /> Circle or write in appropriate response <br />1. Foundation preparation (removal of vegetation, stumps, topsoil): _ es No N/A <br />2. Lift thickness: 12 in. N/A <br />3. Compaction according to approved plan: es No N/A <br />4. Burning (specify extent and location): Yes No /A <br />5. Angle of slope: 2:1 upstream, 3:1 downstream Total = 5:1 N/A <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: Yes No ~~ <br /> At isolated points on em an ment s opes: Yes ©o N/A <br /> At natural hillside: Yes ®o N/A <br /> Over widespread areas: Yes ® N/A <br /> From downstream foundation area: Yes ®o N/A <br /> "Boils" beneath stream or ponded wa er: Yes ®o N/A <br />7. Cracks or scarps on crest: Yes ~o N/A <br />8. Cracks or scarps on slope: Yes ®o N/A <br />9. Sloughing or bulging on slope: Yes ~ N/A <br />10. *Major erosion problems: Yes Q N/A <br />11. Surface movements in valley bottom or on hillsi de: Yes ©o N/A <br />12. *Erosion of toe: Yes No N/A <br />13. *Water impounded against toe: Yes Qo N/A <br />14. Existing embankment freeboard: 4.8 feet <br />15. X Increase Decrease in water level: -- feet <br />16. Cracks, bulging, or erosion on upstream face: Yes ©o N/A <br />17. Visible sumps or sinkholes in slurry surface: Yes No N~A/ <br />18. *Clogging <br /> Spillway channels and pipes: Yes No N/A <br /> Decant system: Yes No CN~~ <br /> Diversion ditches: Yes N~ N/A <br />19. *Cracking or crushing of pipes <br /> Spillway pipes: Yes ®o N/A <br /> Decant system: Yes No ~~ <br />20. Trash racks clear and in place: es No N/A <br />*Major adverse changes in these items could cause instability and should be reported to <br />the Engineering Manager and Mine Superintendent for further evaluation. Adverse condi- <br />tions noted in these items should normally be described (extent, location, volume, etc.) <br />in the space on the back of this sheet. <br />