2012-01-13_HYDROLOGY - C2009087 ‎(2)‎

• Permit No: C2009087
• IBM Index Class Name: HYDROLOGY
• Doc Date: 1/13/2012
• Doc Name: 4th Quarter 2011 Sedimentation Pond Inspection Report
• From: Peabody Sage Creek Mining, LLC
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: JDM
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
r J1 - 1 _1 C (��
INSPECTOR'S NAME: Dennis Jones DATE 1/1A
FACILITY CONFIGURATION: Incised Sump DATE LAST INSPECTION:
SITE NAME: Portal Sump 2 (lower south) LOCATION: NW%, Sec. 3, T5N, R87W
MINE NAME: Peabody Sage Creek Mine LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CDRMS Permit No. C- 2009 -087 OWNER'S REP.: Mike Ludlow
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Circle or write in appropriate response
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:
At isolated points on embankment slopes:
N/A
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 CO N A
Cracks or scarps on crest: Yes No N/A
Cracks or scarps on slope: Yes No N/A
Sloughing or bulging on slope: Yes No N . J
*Major erosion problems: Yes o N/A
Surface movements in valley bottom or on hillside: Yes NN N/A
*Erosion of toe: Yes No N A)
*Water impounded against toe: Yes No N/A
Existing embankment freeboard: Fv ,,
c ,,, Tu p- c, l l << b c;� l c-k u�v 6,& feet -----j Increae Decrease in water level: ilA feet
Cracks, bulging, or erosion on upstream face: Yes No N/A
N/A
Visible sumps or sinkholes in slurry surface:
*Clogging
Spillway channels and pipes: Yes N/A
Decant system: N/A
Diversion ditches: Yes No N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes N/A
Decant system: N/A
20. Trash racks clear and in place: Yes
21. Discharge rate (gpm)
No
*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.