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: DATE: 10/20/90
NPD ES I.D. NO.: - D.P.OO8
FAC ILITY CONFIGU ~: Cross-Valley Pon DATE LAST INSPECTION: 7/23 /90
SIT E NAME: Pond #008 LOCATION:SW'hNW'/~, Sec. 7, TSN~~
MIN E NAME: eneca the ea o y oa o LOCATION: mt. o ay en,
MIN E I.D. N .: ermtt - - OWNER'S R ,, on u tan, upt.
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: © No N/A
4, Burning (specify extent and location): Yes No T
5. Angle of slope: 3:1 upstream, 3:1 downstream T otal = 6:1 N/A
6. *Seepage (specify location, color, and approximate volume)
~_ From underdrain pipes: Yes No
At isolated points on em an men s opes: Yes ® N/A
At natural hillside: Yes N/A
Over widespread areas: Yes N 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/A
8. Cracks or scarps on slope: Yes ® N/A
9. Sloughing or bulging on slope: Yes ® N/A
t0. *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: 8.4 feet
15. Increase Decrease in water level: p feet
16. Cracks, bulging, or erosion on upstream face: Yes No N/A
t7. Visible sumps or sinkholes in slurry surface: Yes No N/A
18. *Clogging
Spillway channels and pipes: Yes 1~q N/.4
Decant system: Yes No (~
Diversion ditches: Yes No
19. *Cracking or crushing of pipes
Spillway pipes: Yes ® N/A
Decant system: Vie? No
20. Trash racks clear and in place: 'e 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.