HYDRO28200

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 9/4/2001
• Doc Name: 2nd Qtr 2001 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Imyoundmente
INSPECTOR'S NAME: Dennis Jones DATE: 06/25/01
NPDES I.D. NO.: CO-0000221 D.P. 002
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: 03/30/01
SITE NAME: Wadoe Impoundment #002 LOCATION: ~ NE'/i Sec. 34 T6N, R87W
MINE NAME: Seneca II Mine (Seneca Coal Co) LOCATION: 7.1 mi. SE of Hayden. CO
MINE I.D. NO.: CMLRD Permit No. C-80-005 OWNER'S REP.: Greco Hitchen. Gen Mar
~i rcle or write in acorocriate reaoonae
1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes No N/A
2. Lift thickness: in.
3. Compaction according to approved plan: Yes No N/A
4. Burning (specify extent and location): Yes No NL
5. Angle of slope: upstream, downstream Total =
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes No
At isolated points on embankment slopes: Yes No NL
At natural hillside: Yes N/A
Over widespread areas: Yes ~
No N/A
From downstream foundation area: Yes No N/A
"Boils" beneath stream or ponded water: Yes No N/A
7. Cracks or scarps on crest: Yes No NL
8. Cracks or scarps on slope: Yes No
9. Sloughing or bulging on slope: Yes No NL
10. *Major erosion problems: Yes No N/A
11. Surface movements in valley bottom or on hillside: Yes No N/A
12. *Erosion of toe: Yes No N/A
13. *Water impounded against toe: Yes No
14. Existing embankment freeboard: N/A feet
15. Increase Decrease in water level: no chance feet
16. Cracks, bulging, or erosion on upstream face: Yes No NL
17. Visible sumps or sinkholes in slurry surface: Yes No NL
18. *Clogging
Spillway channels and pipes: Yes No N/A
Decant system: Yes No
Diversion ditches: Yes ©o N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes No N/A
Decant system: Yes No N%A
20. Trash racks 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.