HYDRO25950

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/4/1993
• Doc Name: 3rd Qtr 1993 Inspections
• From: PEABODY WESTERN
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORK
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Tom Wainwricht DATE: 09/21/93
NPDES I.D. NO.: CO-0000221 D.P. 004
FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 06/10/93
SITE NAME: South Section 12 Pond /004 LOCATION: SWh SE;t, Sec. 12, T6N, R87W
MINE NAME: Seneca II Mine (Peabody Coal Co.l LOCATION: 7.1 mi. S of Hayden, CO
MINE I.D. NO.: CMLRD Permit No. C-005-80 OWNER'S REP.: Scott Williams, Sunt.
Circle or write in aooroariate resaoase
1. Foundation preparation (removal of vegetation, stumps, topsoil: ee 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): Yee No `\.L~
5. Angle of elope: 5.1 upstream, 2.1 downstream Total = 7.1 N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yee ® N/A
At isolated points on embankment elopes: ~ No N/A
At natural hillside: ee N/A
Over widespread areas: Yee ~ N/A
From downstream foundation area: Yes ~ N/A
"Boils" beneath stream or ponded water: Yes ~ N/A
7. Cracks or ecarpe on crest: Yee ~ N/A
8. Cracks or ecarpe on elope: Yee ~ N/A
9. Sloughing or bulging on slope: Yee ~ N/A
10. *Major erosion problems: Yee ~ N/A
11. surface movements in valley bottom or on hillside: Yee ~ N/A
12. *Eroeion of toe: Yee ~7 N/A
13. *Water impounded against toe: Yee ~ N/A
14. Existing embankment freeboard: 5.6 feet
15. Increase X Decrease in water level: 0.1 feet
16. Cracks, bulging, or erosion on upstream face: Yee ~ N/A
17. Visible sumps or sinkholes in slurry surface: Yes No
18. *Clogging
Spillway channels and pipes: Yes ~ N/A
Decant eyetem: Yee N/A
D ivereion ditches: Yee ~Ry~ N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yee ® N/A
Decant eyetem: Yee ~ N/A
20. Trash racks clear and in place: ~ 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 apace on
the back of this sheet.