2010-10-21_HYDROLOGY - C2009087

• Permit No: C2009087
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/21/2010
• Doc Name: 3rd Quarter 2010 Pond Inspection Report
• From: Peabody Colorado Operations, LLC
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: JDM
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
z Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones DATE: 1- l-t 0
NPDES I.D. NO.: N/A /? C
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: O -QS -10
SITE NAME: Truck Wash Settling Pond LOCATION: NWV4 NE1/, Sec. 34, TGN, 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
Circle or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes
2. Lift thickness: N/A inches
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 fo 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 N/A
11. Surface movements in valley bottom or on hillside: N/A
12. *Erosion of toe: N/A
13. *Water impounded against toe: N/A
14. Existing embankment freeboard: (normal = 5.01) feet
15. Increase Decrease in water level: 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 0 N/A
Decant system: N/A
Diversion ditches: N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes N/A
Decant system: N/A
20. Trash racks clear and in place: es No N/A
2 1 . Discharge rate (gpm) D R Y
*Ma jor adverse changes in these items could cause instability and should be repor ted to the
Eng ineering Manager and Mine Superintendent for further evaluation. Adverse condit ions noted
in these items should normally be described (extent, location, volume, etc.) in the space on
the back of this sheet.
P6 `"-a J-v ,