HYDRO26834

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 12/7/1990
• Doc Name: 4th Qtr 1990 Inspections
• From: PEABODY 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: Ron Gehrke
NPDES I D NO - D P 003
DATE: 10/20/90
FACILITY CONFIG Diked Pond DATE LAST INSPECTION: 7/25/90
SITE NAME: Northwest Im oundment #003 LOCATION:SE'hSW'(~,Sec. ,.T~~
MINE NAME: eneca ine ea o y oa o LOCATION: mi, o ay en,
MINE I.D. N .: _ ermi - - OWNER'S R .. on u ion, up .
Circle or write in appropriate response
1,
2.
3.
4.
5.
6.
Foundation preparation (removal of vegetation, stumps, topsoil): _ es No
Lift thickness: 12 in.
Compaction according to approved plan: Yes No
Burning (specify extent and location): Yes No
Angle of slope: 2:1 upstream, 3:1 downstream Total = 5:1
*Seepage (specify location, color, and approximate volume)
___ From underdrain pipes:
At isolated points on em an ment s opes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded wa er:
Yes No
Yes No
Yes o'
Yes
Yes
Yes N
N/A
N/A
N/A
N/A
N/A
L9~
N/A
N/A
N/A
N/A
N/A
7. Cracks or scarps on crest: Yes (Cld N/A
8. Cracks or scarps on slope: Yes ® N/A
9. Sloughing or bulging on slope: Yes JL~ N/A
10. *Major erosion problems: Yes ® N/A
11. Surface movements in valley bottom or on hillside: Yes ® N/A
12. *Erosion of toe: Yes ® N/A
13. *Water impounded against toe: Yes ® N/A
14. Existing embankment freeboard: q,g feet
15. Increase Decrease in water level: 0 feet
16. Cracks, bulging, or erosion on upstream face: Yes ® N/A
17. Visible sumps or sinkholes in slurry surface: Yes No N/A'
18. *Clogging
Spillway channels and pipes: Yes
Decant system: Yes No ~[/
~
Diversion ditches: Yes l~a ,
N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes o N/A
Decant system: (~e o
20. Trash racks clear and in place: Yes No N/A
*Major adverse changes in these items could cause instability and should be reported to
the Engineering Manager and Mine Superintendent for further evaluation. Adverse condi-
tions noted in these items should normally be described (extent, location, volume, etc.)
in the space on the back of this sheet.