2012-05-21_HYDROLOGY - C2009087 ‎(3)‎

• Permit No: C2009087
• IBM Index Class Name: HYDROLOGY
• Doc Date: 5/21/2012
• Doc Name: 1st Quarter 2012 Sedimentation Pond Inspection
• From: Peabody Sage Creek Mining, LLC
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: JDM
• Email Name: DIH
• Media Type: D
• Archive: No

INSPECTOR'S NAME: Dennis Jones
FACILITY CONFIGURATION: Incised Sump
SITE NAME: Portal Sump 2 (lower south)
MINE NAME: Peabody Sage Creek Mine
MINE I.D. NO.: CDRMS Permit No. C- 2009 -087
PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
DATE: t - � - 12-
DATE LAST INSPECTION:
Circle or write in appropriate response
LOCATION: NW %, Sec. 3, T5N, R87W
LOCATION: 7.1 mi. SE of Hayden, CO
OWNER'S REP.: Mike Ludlow
1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes
2. Lift thickness: NA in.
3. Compaction according to approved plan: NA
4. Burning (specify extent and location): No
5. Angle of slope: 2:1 upstream, 3:1 downstream Total = 5:1
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: N/A
At isolated points on embankment slopes: Yes No
At natural hillside: Yes No
Over widespread areas: Yes No
From downstream foundation area: Yes No
"Boils" beneath stream or ponded water: Yes M
7. Cracks or scarps on crest: Yes No
8. Cracks or scarps on slope: Yes No
9. Sloughing or bulging on slope: Yes No
10. *Major erosion problems: Yes
11. Surface movements in valley bottom or on hillside: Yes
12. *Erosion of toe: Yes No
13. *Water impounded against toe: Yes No
14. Existing embankment freeboard: feet
15. ✓ Increase Decrease in water level:
16. Cracks, bulging, or erosion on upstream face:
17. Visible sumps or sinkholes in slurry surface:
18. *Clogging
Spillway channels and pipes: Yes No N/A
Decant system: N/A
Diversion ditches: Yes No N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes No N/A
Decant system: N/A
20. Trash racks clear and in place: Yes No N/A
21. Discharge rate (gpm) 0
feet
Yes No N/A
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.
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