2011-10-19_HYDROLOGY - C2009087

• Permit No: C2009087
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/19/2011
• Doc Name: 3rd Quarter 2011 Quarterly Sedimentation Pond ‎(Hand Delivered)‎
• From: Peabody Sage Creek Mining, LLC
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: JDM
• Media Type: D
• Archive: No

INSPECTOR'S NAME: Dennis Jones
NPDES I.D. NO.: CO- 0048275 D.P. 004
FACILITY CONFIGURATION: Cross - Valley Pond
SITE NAME: South Section 12 Pond #004
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: q
-ll
DATE LAST INSPECTION: ‘
Circle or write in appropriate response
LOCATION: SW SEA %, Sec. 12, 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: 12
3. Compaction according to approved plan: Yes
4. Burning (specify extent and location): No
5. Angle of slope: 5:1 upstream, 2:1 downstream Total = 7:1
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: N/A
At isolated points on embankment slopes: Yes No N/A
At natural hillside: Yes No N/A
Over widespread areas: Yes No N/A
From downstream foundation area: See Lo¢.. 1 No N/A
"Boils" beneath stream or ponded water: Yes 'o N/A
7. Cracks or scarps on crest:
8. Cracks or scarps on slope:
9. Sloughing or bulging on slope:
10. *Major erosion problems:
11. Surface movements in valley bottom or on hillside:
12. *Erosion of toe:
13. *Water impounded against toe:
14. Existing embankment freeboard: (normal = 4.8')
15. Increase Decrease in water level: Ka
16. Cracks, bulging, or erosion on upstream face: Yes N/A
17. Visible sumps or sinkholes in slurry surface: N/A
18. *Clogging
Spillway channels and pipes: Yes T� N/A
Decant system: Inoperable Yes Now
Diversion ditches: Yes 0 N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes ® N/A
Decant system: Inoperable Ycs N N/A
20. Trash racks clear and in place: No N/A
21. Discharge rate (gpm)
Yes ' o N/A
Yes o N/A
Yes o N/A
Yes o N/A
Yes o N/A
Yes No N/A
Yes N. N/A
4 .g feet
feet
I1S
*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. n
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