2012-08-30_HYDROLOGY - C2009087

• Permit No: C2009087
• IBM Index Class Name: HYDROLOGY
• Doc Date: 8/30/2012
• Doc Name: 2nd Quarter 2012 Sedimentation Pond
• 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
NPDES I.D. NO.: CO- 0048275 D.P.002
FACILITY CONFIGURATION: Incised Pond
SITE NAME: Wadge Impoundment #002
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: C� 'C7 T / G..
DATE LAST INSPECTION: Pi — 1 2
LOCATION: NWl /, NEU/,, Sec. 34, T6N, R87W
LOCATION: 7.1 mi. SE of Hayden, CO
OWNER'S REP.: Mike Ludlow
Circle or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil: N/A
2. Lift thickness: N/A
3. Compaction according to approved plan: N/A
4. Burning (specify extent and location): N/A
5. Angle of slope: upstream, downstream Total = N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: N/A
At isolated points on embankment slopes: N/A
At natural hillside: N/A
Over widespread areas: N/A
From downstream foundation area: N/A
"Boils" beneath stream or ponded water: Yes 0 N/A
7. Cracks or scarps on crest: N/A
8. Cracks or scarps on slope: N/A
9. Sloughing or bulging on slope: N/A
10. *Major erosion problems: Yes rNo l N/A
11 Surface movements in valle y bottom or on hillside: Yes No N/A
12. *Erosion of toe: N/A
13. *Water impounded against toe: N/A
14. Existing embankment freeboard: N/A feet
15. Increase Decrease in water level: (4e c�c�kp feet
16. Cracks, bulging, or erosion on upstream face: N/A
17. Visible sumps or sinkholes in slurry surface: N/A
18. *Clogging
Spillway channels and pipes: Yes rNo) N/A
Decant system: N/A
Diversion ditches: Yes No N/A
19. *Cracking or crushing of pipes
Spillway pipes: N/A
Decant system: N/A
20. Trash racks clear and in place: N/A
21. Discharge rate (gpm) 3 q
*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.