HYDRO25065

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 4/8/1993
• Doc Name: 1st Qtr 1993 Inspections
• From: PEABODY WESTERN
• To: MLRD
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION PORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones DATE: 03/18/93
NPDES I.D. NO.: CO-0000221 D.P. 008
FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 12/08/92
SITE NAME: Pond 1008 LOCATION: SW~r NW4, Sec. 7, TSN, R86W
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, Supt.
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: © No N/A
4. Burning (specify extent and location): Yee No
5. Angle of elope: 3.1 upstream, 3.1 downstream Total = 6.1 N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes No
At isolated points on embankment slopes: Yes o N/A
At natural hillside: Yes N N/A
Over widespread areas: Yes N/A
From downstream foundation area: Yes ® N/A
"Boils" beneath stream or ponded water: Yes o N/A
7. Cracks or scarps on treat: Yee ~ N/A
8. Cracks or scarps on elope: Yee 0 N/A
9. Sloughing or bulging on elope: Yea Qo N/A
10. *Major erosion problems: Yes ~o N/A
11. Surface movements in valley bottom or on hillside: Yes Qo N/A
12. *Eroeion of toe: Yes Qo N/A
13. *Water impounded against toe: Yee Qo N/A
14. Existing embankment freeboard: 7.7 feet
15. X Increase Decrease in water level: 0.2 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: Yee Qo N A
Decant system: Yes No
Diversion ditches: Yes No
19. *Cracking or crushing of pipes
Spillway pipes: Yes ®o N A
Decant system: Yee No
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.