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PERIODIC INSPECTION FORM <br /> Water, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: Michael Altavi lla DATE: 0317/96 <br />NPDES I.D. NO.: - CO-0000 221 D.P_ 005 <br />FACILITY CONFIGURATION: C ross-Valley Pond DATE LAST INSPECTION: i2~~fa7 <br />SITE NAME: Pond 1005 LOCATION: NW's SW3d Sec. 10 TSN R88W <br />MINE NAME: ~ n.ra •T-W Mi n (can a Coal of LOCATION: 8 mi. S of Hayden,_CO <br />MINE I.D. NO.: CM1.Rn perm it No. C-82-057 OWNER'S REP.: Brad Brown Gen Mgr <br />1. <br />2. <br />3. <br />4. <br />5. <br />6. <br />7. <br />8. <br />9. <br />10. <br />Foundation preparation (removal of vegetation, stumps, topsoil: <br />Lift thickness: <br />Compaction according to approved plan: <br />Burning (specify extent and location): <br />Angle of slope: 3.5:1 upatzeam, 2.5:1 downstream <br />*Seepage (specify location, color, and approximate volume) <br />From underdrain pipes: <br />At isolated points on embankment elopes: <br />At natural hillside: <br />Over widespread areas: <br />From downstream foundation area: <br />"Boils" beneath stream or ponded water: <br />Cracks or scarps on crest: <br />Cracks or scarps on elope: <br />Sloughing or bulging on elope: <br />*Major erosion problems: <br />11. Surface movements in valley bottom or on hillside: <br />12. *Eroaion of toe: <br />13. *Water impounded against toe: <br />14. Existing embankment freeboard: Anllroxi_matel;! <br />15. ~ Increase Decrease in water level: <br />16. Cracks, bulging, or erosion on upstream face: <br />17. Visible sumps or sinkholes in slurry surface: <br />18. *Clogging <br />Spillway channels and pipes: <br />Decant system: <br />Diversion ditches: <br />19 <br />20 <br />*Cracking or crushing of <br />spillway pipes: _ <br />Decant system: <br />Trash racks clear and in place: <br />Yee No <br />Yes ~]o~ <br />Yes <br />Yea <br />Yee o <br />Yea o <br />Yee No <br />Yee <br />Yee Q <br />Yee <br />Yes o <br />Yea o <br />Yea N <br />7.4 feet <br />NfA <br />NJA <br />NfA <br />NJA <br />fA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />NfA <br />0.1 feet <br />Yes ~ N/A <br />Yee No <br />Yes ©o N A <br />Yee No <br />Yes ® N/A <br />Yee No NJA <br />Yes No <br />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 />pipes <br />NO <br />~Z in <br />ea No <br />Yee No <br />Total = 6.1 <br />