HYDRO27385

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/20/1997
• Doc Name: 3rd Qtr 1997 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 Impoundments
INSPECTOR'S NAME: Micha 7 A7 av'77a DATE: 09/2597
NPDES I.D. NO.: cO-0000227 ^.P. 008
FACILITY CONFIGURATION: Croce-Valley Pond DATE LAST INSPECTION: ~1~27/97
SITE NAME: Pond 1008 LOCATION: sWh NW'y Sec. 7 TcN. R86W
MINE NAME: S n a TT Min (c n a oa7 07 LOCATION: 7.7 mi. c. o Hayden. cO
MINE I.D. NO.: CMT.Rn Permit No. C-80-005 OWNER'S REP.: Brad Rrown. Gen Mg~_
1. Foundation preparation (removal of vegetation, stumps, topsoil: es No N/A
2. Lift thickness: ~_ in. N/A
3. Compaction according to approved plan: es No N/A
4. Burning (specify extent and location): Yes No
5. Angle of elope: 3:1 upstream, 3:1 downstream Total = 6:] N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes No
At isolated points on embankment slopes: Yes ® N/A
At natural hillside: Yes ® N/A
Over widespread areas: Yes ® N/A
From downstream foundation area: Yes o N/A
"Boils" beneath stream or ponded water: Yes o N/A
7. Cracks or ecarpa on crest: Yea ® N/A
B. Cracks or ecarpa on elope: Yes N/A
9. Sloughing or bulging on elope: Yes ~ N/A
10. *Major erosion problems: Yes ~ N/A
11. Surface movements in valley bottom or on hillside: Yes ~ N/A
12. *Eroaion of toe: Yee ® N/A
13. *Water impounded against toe: Yes ~ N/A
14. Existing embankment freeboard: see comments 8.0 feet
15. Increase Decrease in water level: No change feet
16. Cracks, bulging, or erosion on upstream face: Yee No N/A
17. Visible sumps or sinkholes in Blurry surface: Yes No
18. *Clogging
Spillway channels and pipes: Yes ®° N/A
Decant sy at em: Yes No
Diversion ditches: Yes No A
19. *Cracking or crushing of pipes
Spillway pipes: Yes Qo N A
Decant system: Yes No A
20. Trash racks clear and in place: ee 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.