Laserfiche WebLink
PERIODIC INSPECTION FORM <br />Water, !rSediment, or Slurry Impoundments <br />INSPECTOR'S NAME: ~Qkln ~S V ~~eS DATE: I~~Z I' © L <br />NPDES I.D. NO.: CO-0000221 D.P. 005 (~ ? <br />FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: -1 ~~~] '~ I <br />SITE NAME: Pond #005 LOCATION: NW'/a SWYa, Sec. 10. TSN. R88W <br />MINE NAME: Seneca II-W Mine (Seneca Coal Co) LOCATION: 8 mi. S of Hayden. CO <br />MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Gregg Kitchen Gen Mar <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 />Circle or write in aoorooriate response <br />Foundation preparation (removal of vegetation, stumps, topsoil: Yes <br />Lift thickness: 12 in. <br />Compaction according to approved plan: Yes <br />Burning (specify extent and location): No <br />Angle of slope: 3.5:1 upstream, 2.5:1 downstream Total = 6:1 <br />*Seepage (specify location, color, and approximate volume) <br />From underdrain pipes: Yes No <br />At isolated points on embankment slopes: Yes No <br />At natural hillside: Yes No <br />Over widespread areas: Yes No <br />From downstream foundation area: Yes No <br />"Boils" beneath stream or ponded water: Yes No <br />Cracks or scarps on crest: Yes No <br />Cracks or scarps on slope: Yes No <br />Sloughing or bulging on slope: Yes No <br />*Major erosion problems: Yes No <br />Surface movements in valley bottom or on hillside: Yes No <br />*Erosion of toe: Yes No <br />*Water impounded against toe: Yes <br />Existing embankment freeboard: (normal = 7.4') Sea co w.wP ~$_ feet <br />Increase Decrease in water level: '~ '~ feet <br />Cracks, bulging, or erosion on upstream face: Yes No <br />Visible sumps or sinkholes in slurry surface: N A <br />*Clogging <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 />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 />Yes No N/A <br />Yes No N/A <br />N1?+ <br />Yes No N/A <br />Yes o N/A <br />Yes 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 in <br />these items should normally be described (extent, location, volume, etc.) in the space on the <br />back of this sheet. <br />