HYDRO30358

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 4/23/1998
• Doc Name: 1sst 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 Impoundments
INSPECTOR'S NAME: M; -has] A7 avil7a DATE: 03/18/98
NPDES I.D. NO.: N/A
FACILITY CONFIGURATION: rnciaed Pond DATE LAST INSPECTION: 12/22/97
SITE NAME: Truck Wash SuP }71y Pond LOCATION: NWT NF~ _cec. 34 T6N R87W
MINE NAME: Seneca Mine TT ~c n a oa7 o] LOCATION: 7.t mi. cF of Hayd~~'O ,_
MINE I.D. NO.: CDMG Permi t No. C-80-005 OWNER'S REP.: Brad Rrown~- n Mg~_
1. Foundation preparation (removal of vegetation, stumps, topsoil: es No N/A
2. Lift thickness: ~Z inch es
3. Compaction according to approved plan: es No N/A
4. Burning (specify extent and location): Yes No
5. Angle of elope: 2:7 upstream, 2:1 downstream Total = a :t
6. *seepage (specify location, color, and approximate volume)
From underdrain pipes: Yea No
At isolated points on embankment slopes: Yea N/A
At natural hillside: Yes N/A
Over widespread areas: Yes ~o N/A
From downstream foundation area: Yes o N/A
"Boils" beneath stream or ponded water: Yes o N/A
7. Cracks or scarps on crest: Yes ~ N/A
8. Cracks or scarps on slope: Yes ®o N/A
9. Sloughing or bulging on elope: Yea ~ N/A
10. *Major erosion problems: Yee o N/A
11. Surface movements in valley bottom or on hillside: Yea o N/A
12. *Erosion of toe: Yee ~ N/A
13. *Water impounded against toe: Yee ~ N/A
14. Existing embankment freeboard: See comments 3.0 feet
15. Increase ~ Decrease in water level: 0.5 feet
16. Cracks, bulging, or erosion on upstream face: Yes ~ N/A
17. Visible sumps or sinkholes in slurry surface: Yes No
1B. *Clogging
Spillway channels and pipes: Yes ~ N A
Decant system: Yee No
Diversion ditches: Yes ® N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yea °® N/A
Decant system: Yea No A
20. Trash racks clear and in place: Yes No N/
*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.