HYDRO28738

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 9/16/1991
• Doc Name: 3rd Qtr 1991 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
Ron Gehrke 08/01/91
INSPECTOR'S NAME: DATE:
NPDES I D NO - D P 004
FACILITY CONFIGU Cross-Valley Pond DATE LAST INSPECTION: 05/07/91
SIT E NAME: South Section 12 Pond #004 LOCATION:SW'I,SE'l~, Sec.1
MIN E NAME: eneca ine ea o y oa o LOCATION: mi. o ay en,
MIN E I.D. N .: ermit - - OWNER'S R .:Scott Williams, Su pt
Circle or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil): ~ 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/A
5. Angle of slope: 5:1 upstream, 2:1 downstream Total = 7:1 N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes Po N/A
At isolated points on em an ment s opes: Yes N N A
At natural hillside: Yes N/A
Over widespread areas: Yes N/A
From downstream foundation area: Yes N/A
"Boils" beneath stream or ponded wa er: Yes N/A
7. Cracks or scarps on crest: Yes N~ N/A
8. Cracks or scarps on slope: Yes Jo N/A
9. Sloughing or bulging on slope: Yes NCg~ 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 No N/A
13. *4later impounded against toe: Yes N N/A
14. Existing embankment freeboard: 4'7 feet
15. Increase Decrease in water level: -~ feet
16, Cracks, bulging, or erosion on upstream face: Yes No N/A
17. Visible sumps or sinkholes in slurry surface: Yes No . (1~)
18. *Clogging
Spillway channels and pipes: Yes No N/A
Decant system: Yes N/A
Diversion ditches: Yes o N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes No N/A
Decant system: Yes o N/A
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.