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. <br />PERIODIC INSPBCTION FORM <br />Water, Sediment, or Slurry Inpoundaents <br />INSPECTOR'S NAME: Michael Altavitla DATE: 12 /11f98 <br />NPDES I.D. NO.: CO-0000221 ^_P. 005 <br />FACILITY CONFIGURATION: - oee-Vat7 y Pond DATE LAST INSPECTION: 09/21/98 <br />SITE NAME: Pnnd i'005 LOCATION: NW~ cW~ aec_ t0. TSN_ A88W <br />MINE NAME: Seneca ii-W Mine (c ne a -oal -e1 LOCATION: B mi_ S of Ha en, CO <br />MINE I.D. NO.: rMr.an Permit Ne. G-82-057 OWNER'S REP.: Brad Brown Gen Mqr <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7. <br />8. <br />9. <br />10 <br />11 <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 elope: 3.5:1 upstream, 2.s: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 />"Soils" 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 />Surface movements in valley bottom or on hillside: <br />12. *Eroeion of toe: <br />13. <br />14. <br />*Water impounded against toe: _ <br />Existing embankment freeboard: <br />15. ~ Increase Decrease in water level: <br />16. Cracks, bulging, or erosion on upstream face: <br />17. Visible sumps or sinkholes in Blurry surface: <br />18. *Clogging <br />Yee No <br />Yee <br />Yee <br />Yee ~d <br />Yee <br />Yee <br />Yes <br />Yee <br />Yes <br />Yee <br />Yee <br />Yee I~ <br />Yes R~o <br />9.4 feet <br />1_O feet <br />Yee <br />Yes No <br />N/A <br />N/A <br />N A <br />A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/A <br />N/ <br />Spillway channels and pipes: Yes ~ N A <br />Decant eyetem: Yee No <br />Diversion ditches: Yee ® N/A <br />19. *cracking or crushing of pipes <br />Spillway pipes: Yee ~N <br />~ <br />`p~ <br />Decant eyetem: Yee No ~~ <br />, <br />`1/_~J <br />20. Trash racks clear and in place: ea No N/A <br />ee No <br />_12 in <br />ee No <br />_ Yes No <br />Total = 6.1 <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 space on <br />the back of this sheet. <br />