Laserfiche WebLink
PERIODIC INSPECTION FORM <br /> Water, Sediment, or Slurry Impoundments <br />INSPECTOR' S NAME: Michael Altavilla DATE: 03/19/97 <br />NPDES I.D. NO.: C0~0000221 D.P. 006 <br />FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 12/20 /96 <br />SITE NAME: Pond #006 LOCATION: NWy NWS:, Sec. 22. TSN. R88W <br />MINE NAME: Seneca II-W Mine (Seneca Coal Co ) LOCATION: 8 mi. 5 of Hayden. CO <br />MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Brad Brown. Gen Mar <br />Circle or write in appropriate response <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />Foundation preparation (removal of vegetation, stumps, topsoil: es <br />Lift thickness: 12 <br />Compaction according to approved plan: e <br />Burning (specify extent and location): Yes <br />Angle of slope: 3:1 upstream, 3:1 downstream Total = <br />•Seepage (specify location, color, and approximate volume) <br />From underdrain pipes: <br />At isolated points on embankment slopes: <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 slope: <br />Sloughing or bulging on slope: <br />*Major erosion problems: <br />Surface movements in valley bottom or on hillside: <br />•Erosion of toe: <br />+Water impounded against toe: <br />Existing embankment freeboard: Approximately <br />Increase Decrease in water level: No chance <br />Cracks, bulging, or erosion on upstream face: <br />Visible sumps or sinkholes in slurry surface: <br />•Clogginq <br />Spillway channels and pipes: <br />Decant system: <br />Diversion ditches: <br />*Cracking or crushing of pipes <br />Spillway pipes: <br />Decant system: <br />Trash racks clear and in place: <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />Yes <br />es <br />Yes <br />Yes <br />10.8 <br />Yes <br />Yes <br />No <br />in <br />No <br />No <br />6:1 <br />No <br />1VO <br />0 <br />0 <br />/moo <br />~% <br />No <br />0 <br />feet <br />Eeet <br />No <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/A <br />N/A <br />N/A <br />/A <br />Yes Q N/A <br />Yes No <br />Yes No <br />Yes ® Nf~y <br />Yes No ~7~ <br />es 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 space on <br />the back of this sheet. <br />