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PERIODIC INSPECTION FORM <br />Yater, Sediment, or Slurry Impoundments <br />INSPECTOR'S NAME: nvti~~ (5 -~oHp ~ DATE: ~-`~ - ~ J <br />N.P.O.E.S. I.D. NO.: rn-nnnn9~T n <br />P <br />nn3 <br />_ <br />. <br />FACILITY CONFIGIRATION: hiked Pond DATE LAST INSPECTION: (~'~~'~,S <br />SITE NAME: NnrthwPCt Tmnniindment Hn~3 LOCATION: SE'aSWa. Sec. 27. T6N. R87W <br />MINE NAME: Seneca ii Mine (PeahndyJ'oal .o an vl LOCATION: 7.1 mi. SE of Havden. CO <br />MINE I.D. NO.: f.MIRR Parmit Nn_ f.-nn%,-80 OWNER'S R EP.: Don Zul ian. Supt. <br />Circle or write in appropriate response <br />1. Foundation preparation (removal of vegetation, stumps, topsoil?) <br />2. Lift thickness (inches) <br />3. Compaction according to approved plan <br />4. Buroing.(specify extent and location) <br />es No <br />~_ inches <br />Yes No <br />X>~kXXN>d <br />S.. Angle of Slope {,de.~.ea~l 7.1 ups tream 3:1 downstream, total = `~L ~P9MeiF <br />6. *Seepage (specify location, color, and approximate volume) Sec t~w.w.r.._f s <br /> From underdrain pipes XlERXXN <br /> At isolated points on embankment s opes Yes <br /> At natural hillside Yes o <br /> Over widespread areas Yes o <br /> From downstream foundation area Yes o <br /> "Boils" beneath stream or ponde water Yes o <br />7. Cracks or scarps on crest Yes <br />8. Cracks or scarps on slope Yes No <br />9. Sloughing or bulging on slope Yes to <br />l~. *Major erosion problems Yes to <br />11. Surface movements in valley bottom or on hillside Yes No <br />12. *Erosion of toe Yes Nn7 <br />13. *Water impounded against toe ~ _ Yes No <br />14. Existing embankment freeboard (feet) ~'~ ~,Q,~~.G.~.~q c .~:~u...sD S feet <br />15. Increase <br />16. Cracks, bulging, or erosion on upstream face <br />17. Visible sumps or sinkholes in slurry surface N/A <br />18. *Clogging <br />Spillway channels and pipes <br />Decant system N/A <br />Diversion ditc es <br />19. *Cracking or crushing of pipes <br />Spillway pipes <br />Decant system <br />20. Trash racks clear and in place N/A <br />*Major adverse changes in these items could cause instability and should <br />the Engineering Manager and Mine Superintenden tron. <br />tions noted in these items should normally be ~~~ cation, <br />in the space on the back of this sheet. <br />~aN z s tees <br />C~ feet <br />Yes (I~jo <br />XN%XXNfB <br />Yes I o <br />Xtli(XXNd! <br />Yes I~o <br />Yes o <br />Xif~X <br />XifNXXO(d{ <br />be reported to <br />Adverse condi- <br />volume, etc.) <br />Decrease in water level (feet) -,~ ~ k~.k r _ <br />