HYDRO20882

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 1/30/1998
• Doc Name: 4th Qtr 1998 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 Impouadmeats
INSPECTOR'S NAME: M~ ha 1 A av'>>a DATE: 12/22/97
NPDES I.D. NO.: CO-0000221 D.P. 002
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: 09/25/97
SITE NAME: Wadge impoundment #002 LOCATION: NW~~~ Sec. 34 T6N R87W
MINE NAME: Seneca 22 Mine (e n a oaf -off LOCATION: 7.1 m;, cF of Hayden, CO
MINE I.D. NO.: - r.Rn P rm't No. -BO-OOS OWNER'S REP.: Brad Brown Gen Mqr
1. Foundation preparation (removal of vegetation, stumps, topsoil: Yee No
2. Lift thickness: in. /
3. Compaction according to approved plan: Yes No
4. Burning (specify extent and location): Yes No
5. Angle of slope: upstream, downstream Total = N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes No A
At isolated points on embankment slopes: Yee No N
At natural hillside: Yes ® N/A
Over widespread areas: Yes No N/A
From downstream foundation area: Yes No ~QCTA>
"Boils" beneath stream or ponded water: Yee No N A
7. Cracks or scarps on treat: Yea No
8. Cracks or scarps on slope: Yea No
9. Sloughing or bulging on elope: Yes No /A
10. *Major erosion problems: Yea No N/A
11. Surface movements in valley bottom or on hillside: Yee No N/A
12. *Eroaion of toe: Yes No
13. *Water impounded against toe: Yea No
14. Existing embankment freeboard: See com_menta N~/A feet
15. Increase Decrease in water level: No change feet
16. Cracks, bulging, or erosion on upstream face: Yee No /A
17. Visible sumps or sinkholes in slurry surface: Yes No N/A
18. *Clogging
Spillway channels and pipes: Yes 0 N A
Decant system: Yes No A
Diversion ditches: Yee No N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yee ~ N A
Decant system: Yee No /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 apace on
the back of this sheet.