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PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impoundmen <br />s <br /> <br />' t <br />( <br />S NAME: Dennis Jones <br />INSPECTOR <br />NPDES I.D. NO.: CO-0000221 D.P. 004 DATE: y <br /> <br />_ O <br />3 _-7 <br />FACILITY CONFIGURATION: Cross-Val ley Pond DATE LAST INS PECTION: <br />SITE NAME: South Section 12 Pond #004 LOCATION: SWV4 SE%, Sec. 12, T5N, R87W <br />MINE NAME: Seneca II Mine (Seneca Coal Co) LOCATION: 7.1 mi. SE of Hayden, CO <br />MINE I.D. NO.: CMLRD Permit No. C -80-005 OWNER'S REP.: Gregg Kitchen, Gen Mar <br />Circle or write in appropriate response <br />1. <br />2. <br />3. <br />4. <br />5. <br />6. <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 slope: 5:1 upstream, 2:1 downstream <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 />7. Cracks or scarps on crest: <br />8. Cracks or scarps on slope: <br />9. Sloughing or bulging on slope: <br />10. *Major erosion problems: <br />11. Surface movements in valley bottom or on hill side: <br />12. *Erosion of toe: <br />13. *Water impounded against toe: <br />14. Existing embankment freeboard: (normal = 4.8') <br />15. Increase Decrease in water level: Kp ??4?.?c1Q <br />16. Cracks, bulging, or erosion on upstream face: <br />17. Visible sumps or sinkholes in slurry surface: <br />18. *Clogging <br /> Spillway channels and pipes: <br /> Decant system: Ino perable <br /> Diversion ditches: <br />19. *Cracking or crushing of pipes <br /> Spillway pipes: <br /> Decant system: Inop erable <br />20. Trash racks clear and in place: <br />21. Discharge rate (gpm) <br />Yes <br />12 <br />Yes <br />No <br />Total <br />N <br />7:1 <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />Yes No N/A <br />Yes N N/A <br />Yes U N/A <br />Yes No N/A <br />IA feet <br /> feet <br />Yes (M) N/A <br />N/A <br />Yes ® N/A <br />IYEe9 Ne-arcs <br />Yes (? N/A <br />Yes 0 N/A <br />Yes Ne-Pill n <br />Yes No N/A <br />I?? <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.