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 FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Tom Wainwright DATE: 06/07/94
NPDES I.D. NO.: COG-850008-002A
FACILITY CONFIGURATION: Embankment Pond DATE LAST INSPECTION: 3 /28/94
SITE NAME: Rail Loop Pond 2 LOCATION: SEia SW%. Sec14 T6N,R88W
MINE NAME: H-G Terminal, Inc. LOCATION: 2 mi. SE of Hav den, CO
MINE I.D. WO.: CMLRD Permit No. C-92-081 OWNER'S REP.: Scott Williams, Supt.
Cirole Or Write in appropriate response
1. Burning (specify extent and location): Yes No N/A
2. Angle cif slope: 3.75:1 upstream, 2:1 downstream Total = 5.75:1 N/A
3. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes N/A
At isolated points on embankment slopes: Yes No
At natural hillside: Yes o N/A
Over widespread areas: Yes o N/A
From downstream foundation area: Yes No N/A
"Boils" beneath stream or ponded water: Yes No N/A
4. Cracks or scarps on crest: Yes ©o N/A
5. Cracks or scarps on slope: Yes No N/A
6. Sloughing or bulging on slope: Yes No N/A
7. *Major erosion problems: Yes ®o N/A
B. Surf acc~ movements in valley bottom or on hillside: Yes o N/A
9. *Erosion of toe: Yes o N/A
10. *Water impounded against toe: Yes No N/A
11. Existing embankment freeboard: 4 feet
12. Increase X Decrease in water level: See Comments 1.5 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. *Clogg:ng ~
Spillway channels and pipes: Yes lNO)
Decant system: Yes o
Diversion ditches: Yes ©o N A
16. *Cracki_ng or crushing of pipes
Spillway pipes: Yes No N A
Decant system: Yes No
17. Trash rucks clear and in place: Yes No N/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.