HYDRO27443

• Permit No: C1992081
• IBM Index Class Name: Hydrology
• Doc Date: 6/20/1994
• Doc Name: QUARTERLY SEDIMENTATION POND INSPECTIONS - HAYDEN GULCH LOADOUT
• From: PEABODY WESTERN COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORN
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Tom Wainwrig ht DATE: 06/07/94
N PDES I.D. NO.: COG-850008-OOlA
FACILITY CONFIGURATION: Embankment Pond DATE LAST INSPECTION: 3/28/ 94
SITE NAME: Truck Loop Pond 1 LOCATION: SE% SW ;, Sec 14 T6N ,R88W
MINE NAME: H-G Terminal, Inc. LOCATION: 2 mi. SE of Havden, CO
MINE I.D. NO.: CMLRD Permit No. C-92-081 OWNER'S REP.: Scott Williams, Supt.
Circle or write in aoyroariate response
1. Burning (specify extent and location): Yes No N/A
2. Angle of slope: 2.75:1 upstream, 2:1 downstream Total = 4.75:1 N/A
3. *Seepage (specify location, color, and approximate volume)
From underd ra in pipes: Yes N/A
At isolated points on embankment slopes: Yes No
At natural hillside: Yes N/A
Over widespread areas: Yes o N/A
From downstream foundation area: Yes o N/A
"BOi1s•' beneath stream or ponded water: Yes No N/A
4. Cracks or scarps on crest: Yes ~ N/A
5. Cracks or scarps on slope: Yes N~ N/A
6. Sloughing or bulging on slope: Yes Q N/A
7. *Major erosion problems: Yes (rvof N/A
8. Surface movements in valley bottom or on hillside: Yes No N/A
9. *Erosion of toe: Yes ~N O1 N/A
10. *Water impounded against toe: Yes No N/A
11. Existing embankment freeboard: 10 feet
12. Increase X Decrease in water level: Approximatel y 1 feet
13. Cracks, bulging, or erosion on upstream face: Yes No N/A
14. Visible sumps or sinkholes in slurry surface: Yes No N/A
15. *Clogging
Spillway channels and pipes: Yes No N/A
Decant system: Yes o N/A
Diversion ditches: Yes o N/A
16. ^Cracking or crushing of pipes
Spillway pipes: Yes ©o N/A
Decant system: Yes o N/A
17. Trash racks clear and in place: Yes No /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.