HYDRO30755

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 12/31/1992
• Doc Name: QTRLY SEDIMENTATION POND INSPECTIONS SENECA II-W MINE
• From: PEABODY WESTERN COAL CO
• To: MLRD
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones
NPDES I.D. NO.: CO-0000221 D.P. 005
FACILITY CONFIGURATION: Cross-Valley Pond
SITE NAME: Pond #005
MINE NAME: Seneca Mine fI-W Peabody oa Co
MINE I.D. NO.: CMLRD Permit No. C-82-057
DATE:
DATE LAST INSPECTION: 09123192
LOCATION: NW'/. SW'/. SEC 10 T5N R88W
LOCATION: 8 mi. S of Nayden, C
OWNER'S REP.: Scott '.dilliams. Supt.
Circle or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil): _ es No N/A
2. Lift thickness: 12 in. N/A
3. Compaction according to approved plan: es No N/A
4. Burning (specify extent and location): Yes No N
5. Angle of slope: 3.5 upstream, 2.5 downstream Total = 6:1 N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes ~o N/A
At isolated points on embankment slopes: Yes ® N/A
At natural hillside: Yes ® ~l/A
Over widespread areas: Yes C1~ N/A
From downstream foundation area: Yes ® N/A
"Boils" beneath stream or ponded water: Yes ~ti Pl/A
7. Cracks or scarps on crest: Yes No
8. Cracks or scarps on slope: Yes No ~-n/.w
9. Sloughing or bulging on slope: Yes !o N/A
10. *Major erosion problems: - Yes No N/A
11. Surface movements in valley bottom or on hillside: Yes ~ N/A
12. *Erosion of toe: Yes !o N/A
13. *Water impounded against toe: Yes ~ N/A
14. Existing embankment freeboard: 21.6 fee t
15. ~_ Increase Decrease in water level: See comments ~_ fee t
16. Cracks, bulging, or erosion on upstream face: Yes tl N/A
17. Visible sumps or sinkholes in slurry surface: Yes No N/A
18. *Clogging
Spillway channels and pipes: Yes No N/A
Decant system: Yes .;o N/
Diversion ditches: Yes No N/
19. *Cracking or crushing of pipes
Spillway pipes: Yes No N/A
Decant system: Yes No
20. Trash racks clear and in place: es No N/A
*Fta jor adverse changes in these items could cause instability and should be reported to the
Eng ineering Manager and Mine Superintendent for further evaluation. Adverse conditio ns
not ed in these items should normally be described (extent, location, volume, etc .) in the
spa ce on the back of this sheet.