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PERIODIC INSPECTION FORM <br />Mater, Sediwent, or Slurry Iwpoundments <br />INSPECTOR'S NAME: <br />N.P.D.E.S. I.D. NO.: <br />FACILITY CONFI6URAT1 <br />SITE NAME: Mesa Gr <br />MINE NAME: Mesa Gr <br />MINE I.D. NO.: CML <br />i ~lv~p ~ DATE: 12 -(`~- u7 <br />6 D.P. 001 <br />alley Pond DATE LAST INSPECTION: - Z Z -T5 <br />oundment LOCATION: NE',SE'„ Sec.18, T6N, R8 W <br />abody Coal Company LOCATION: 3.8 mi. ESE of Hayden, C <br />. 82-36 OWNER'S REP.: Don Zulian, Supt. <br />Circle or write in appropriate response <br />1. Foundation preparation (removal of vegetation, stumps, topsoil?) es No <br />2. Lift thickness (inches) 12 inches <br />3. Compaction according to approved plan es No <br />4. Burning (specify extent and location) N/A Y(6(9;XXliA( <br />5. Angle of slope ;~~ ===; 2:1 upstream, 2.4:1 downstream, total = 4.4:1 _ d&('~C9( <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes Lei No <br /> At isolated points on embankment s opes Yes N <br /> At natural hillside Yes <br /> Over widespread areas Yes <br /> From downstream founds ion area Yes <br /> "Boils" beneath stream or ponde water Yes No <br />7. Cracks or scarps on crest ~ No <br />8. Cracks or scarps on slope Yes <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 G~ <br />12. *Erosion of toe Yes o <br />13. *Water impounded against toe Yes N~o <br />14. Existing embankment freeboard (feet) ~Z 5 ~ ~,p~,.~~.~, k we~~ ~~~ cv ~dZ feet <br />15. Increase Decrease in water level (feet) i feet <br />16. Cracks, bulging, or erosion on upstream face Yes No <br />17. Visible sumps or sinkholes in slurry surface N/A 1'k~XN~Yo <br />18. *Clogging <br /> Spillway channels and pipes Yes <br /> Decant system Yes No <br /> Diversion ditc es Yes o <br />19. *Cracking or crushing of pipes <br /> Spillway pipes N1A ~--~~ <br /> Decant system Yes <br />20. Trash racks clear and in place N/A X(Xi6KXktd( <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 />