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
Hater, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones DATE: 12/7/93
NPDES I.D. NO.: CO-0000221 D.P. 008
FACILITY CONFIGURATION: Cross-Vallev Pond DATE LAST INSPECTION: 9/21/93
SITE NAME: Pond A'008 LOCATION: SWSt NWk, Sec. 7, T6N, R86W
MINE NAME: Seneca II Mine (Peabody Coal Co.) LOCATION: 7.1 mi. S 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: 12 in. N/A
3. Compaction according to approved plan: Yes No N/A
4. Burning (specify extent and location): Yes No ;N/A
5. Angle of slope: 3.1 upstream, 3.1 downstream Total = 6.1 N/A
6. •Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yea No ~A.~
At isolated points on embankment slopes: Yes ~~NO.~ N/A
At natural hillside: Yes ~,19n N/A
Over widespread areas: Yes ENO N/A
From downstream foundation area: Yes ;[]p,' N/A
"Boils" beneath stream or ponded water: Yes ~No,~ N/A
7. Cracks or scarps on crest: Yes ~No~. N/A
8. Cracks or scarps on slope: Yes `No N/A
9. Sloughing or bulging On Slope: Yes ~NO:~ N/A
10. "Major erosion problems: Yes ~lo/ N/A
11. Surface movements in valley bottom or on hillside: Yes ~.No.~ N/A
12. *ErOSlOn of toe: Yes QIN N/A
13. *water impounded against toe: Yes LD' N/A
14. Existing embankment freeboard: 7.1 feet
15. Increase Decrease in water level: feet
16. Cracks, bulging, or erosion on upstream face: Yes ENO N/A
17. Visible sumps or sinkholes in slurry surface: Yes No ~A~
18. *Clogging
spillway channels and pipes: Yes ~ N/A
Decant system: Yes No ~A'
Diversion ditches: Yes No N/Iy
19. •Cracking or crushing of pipes
spillway pipes: Yes Nc~ N/A
Decant system: Yes No `N/A
20. Trash racks clear and in place: des. 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.