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PERIODIC INSPECTIUH FORM <br />Mater, Sediwent, or Slurry lwpoundments <br />INSPECTOR'S NAME: ~)c?v~~-~45 ~` r,i.`t•~ DATE: Ci -~' ~C <br />N.P.D.E.S. I.D. NO.; r.n-nnnn99T n_P. nn~ <br />FACILITY CONFIGURATION: Diked Pnnd DATE LAST INSPECTION: ~ -ZC~ -`h E. <br />SITE NAME: ~nrthweat TmnnundmPnt ND03 LOCATION: SE'aSW'a. Sec. 21, T6N, RB7W <br />MINE NAME: Seneca Ij MinP (Peabo y Coal Comoanv) LOCATIUNi 7.I mi_SE of Havden, CO <br />MINE I.D. NO.: f.h11RR Parmit Nn_ f.-I)5-Rn OWNER'S REP.: Uon Zulian. Supt. <br />Circle or write in appropriate respaise <br />1. Foundation preparation (removal of vegetation, stoops, topsoil7) Yes No <br />2. Lift thickness (inches) ~Z inches <br />3. Compaction according to approved plan Yes No <br />4. Burning (specify extent and location) ti/A X>rkxXNR <br />r 5. Angle of Slope Fdeg~) 7•I rrnctream. 3:1 downstream. total = ~ weir <br />6. *Seepage'(specify location, color, and approximate volume) <br /> From underdrain pipes ti/A XR~XXMA <br /> At Isolated points on embankment ps oo es Yes Rla <br /> At natural hi 11 si de Yes rdq, <br /> Over widespread areas Yes (~ <br /> From downstream foundatTOn area Yes l{P <br /> "Boils" beneath stream or ponded water Yes tf~a <br />1. Cracks or scarps on crest Yes ~i~ <br />8. Cracks or scarps on slope Yes (<lo) <br />9. Sloughing or bulging on slope Yes L a <br />10. *Ma,)or erosion problems Yes Cf1d <br />11. Surface movements in valley bottom or on hillside Yes fu <br />12. *Erosion of toe Yes ~Fp <br />13. *Water impounded against toe Yes Fl~p~ <br />14. Existing embankment freeboard (feet) S feet <br />15. Increase Decrease in water level (feet) C~ feet <br />16. Cracks, bulging, or erosion on upstream face Yes ~19~ <br />11. Visible strops or sinkholes 1n slurry surface I1/A XtlXXXHtl <br />16. *Clogging <br /> Spillway channels and pipes Yes (fla <br /> Decant system ~A r,~~xxn~ <br /> Diversion ditc es Yes ~Ib <br />19. *Cracking or crushing of pipes <br /> Spillway pipes Yes ~Ci~ <br /> Decant system 7>$ r.~~xra~ <br />20. Trash racks clear and in place IJ/A K~i(XXp(d <br />*Ma,jor 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 />