Laserfiche WebLink
PERIODIC INSPECTION FORM <br />Yater, Sedi~ent, ar Slurry Impo~mdae~ts <br />INSPECTOR'S NAME: ~e~.~:s ~1o~.e5 DATE: lI-~7-S'~ <br />N.P .D.E.S. I.D. NO.: rn-nnnn~~l n <br />P <br />nn3 <br />FAC _ <br />_ <br />ILITY CONFI6lRATTON: ^iked Pond DATE LAST INSPECTION: $-3 I- $ ~~ <br />SITE NAME: Nnrthwlrct TnronimAnwnt #nn3 LOCATION: SEaSWa. Se c. 27. T6 N. R87W <br />MINE NAME: Sonora"TT Mine (Peabody Coal Comoanvl LOCATION: 7.1 mi. SE of Havden. CO <br />MIN E I.D. NO.: CM~RR Permit Nn_ G005-Sn OWNER'S REP.: Don Zu lian. Suot. <br /> <br /> Circle or' write in appropriate response , <br />1. Foundation preparation (removal of vegetation, stumps, topsoil?) ©e No <br />2. Lift thickness (inches) ~2_ inches <br />3. Compaction according to approved plan Yes No <br />4. Burning (specify extent and location) N/A XIEkXXNR <br />5. Angle of slope (~ds~M~) 9.1 urctream_ 3'1 downstream. total = ~L ~Y~MYYb <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes XR~XXNR <br /> At isolated points on embankment s opes Yes <br /> At natural hillside Yes <br /> Over widespread areas Yes <br /> From downstream foundat on area Yes <br /> 'Boils" beneath stream or ponde water Yes o <br />7. Cracks or scarps on crest Yes ®o <br />8. Cracks or scarps on slope Yes <br />9. Sloughing or bulging on slope Yes <br />10. *Major erosion problems Yes <br />11. Surface movements in valley bottom or on hillside Yes <br />12. *Erosion of toe Yes <br />13. *Mater impounded against toe Yes Vo <br />14. Existing embankment freeboard (feet) ~ c.~4c~-+.ao ~ feet <br />15. ~ Increase Decrease in water level (feet) O~ 5 feet <br />16. Cracks, bulging,. or erosion on upstream face Yes <br />17. Visible sumps or sinkholes in slurry surface N/A Xat%XXN~ <br />18. *Clogging <br /> Spillway channels and pipes Yes <br /> Decant system NLA XMtXX~ <br /> Diversion ditches Yes ((~g~ <br />19. *Cracking or crushing of pipes <br /> Spillway pipes Yes <br /> Decant system XNiIXXO(g <br />20. Trash racks clear and in place N/A X1f~XXNdI <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 />