HYDRO22713

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 1/10/1994
• Doc Name: 4th Qtr 1993 Inspections
• From: PEABODY WESTERN
• To: DMG
• 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 DATE: 12/20/93
NPDES I.D. NO.: CO-0000221 D.P. 002
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: 9/21/93
SITE NAME: Wedge Impoundment ¢002 LOCATION: NWT NEB, Sec. 34, T6N, R87W
MINE NAME: Seneca Mine (Peabody Coal Co.) LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CMLRD Permit No. C-005-80 OWNER'S REP.: Scott Williams, Supt.
Circle Or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes No N/A

2. Lift thickness: in. `N/A
3. Compaction according to approved plan: Yes No `NjA
4. Burning (apecify extent and location): Yes No `/_8-
5. Angle of elope: upstream, downstream Total = N/A
6. •Seepage (apecify location, color, and approximate volume)
From underdrain pipes: Yes No `~A
At isolated points on embankment elopes: Yes No ~~ ~A
At natural hillside: Yes ;NO~ N/A
Over widespread areas: Yes ~lln. N/A
From downstream foundation area: Yes No NLA
"Boils" beneath stream or ponded water: Yes ~[JO. N/A
7. Cracks or scarps on crest: Yes No `N/A
8. Cracks or scarps on elope: Yea No ~N1A
9. Sloughing or bulging on elope: Yea .No `N/A
10. *Major erosion problems: Yes `No. N/A
11. Surface movements in valley bottom or on hillside: Yea ~~ N/A
12. •Eroaion of toe: Yea No ~N/A
13. *water impounded against toe: Yes No LN/A'
14. Existing embankment freeboard: N A feet
15. Increase Decrease in water level: No change feet
16. Cracks, bulging, or erosion on upstream face: Yes No ~A
17. Visible sumps or sinkholes in slurry surface: Yes No `(Fy-~
18. •Clogging
Spillway channels and pipes: Yes iNo N/A
Decant system: Yes No LN/A
D iveraion ditches: Yes ~ N/A
19. •Cracking or crushing of pipes
Spillway pipes: Yes No .N/A
Decant system: Yes No ~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 conditions noted
in these items should normally be described (extent, location, volume, etc.) in the space on
the back of this sheet.