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 RECEI\/ED
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Michael Altavi77a DATE: 09/2597 ~CI ~ O ~~~~
NPDES I.D. NO.: CO-0000221 O.P. 003
FACILITY CONFIGURATION: Diked Pond DATE LAST INSPECTI~IYISirebd,~$OrdAa~o ~~ i
SITE NAME: Northwest Imnoendment k00a '~'°C~%IOOy
LOCATION: SEk sW'.~ Sec. 27. T6N R87W "
MINE NAME: sen a II M'n (seneca coal cod LOCATION: 7.t mi_ sE of Hayd ~n ,_s0 _
MINE I.D. NO.: -MT.Rn pe m+ No. --80-OOS OWNER'S REP.: Brad Brown. Gen Mar
1. Foundation preparation (removal of vegetation, stumps, topsoil: _ ~ No N/A
2. Lift thickness: 1Z in. N/A
3. Compaction according to approved plan: ® No N/A
4. Burning (specify extent and location): Yee No
5. Angle of elope: 2:1 upstream, 3cl downstream Total = Scl N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yee No /A
At isolated points on embankment elopes: Yee
At natural hillside: Yea N/A
Over widespread areas: Yes ~ N/A
From downstream foundation area: Yes ® N/A
"Boils" beneath stream or ponded water: Yee ® N/A
7. Cracks or ecarpe on treat: Yee N/A
8. Cracks or ecarpe on elope: Yes ~ N/A
9. Sloughing or bulging on elope: Yee ~ N/A
10. *Major erosion problems: Yea ®° N/A
11. Surface movements in valley bottom or on hillside: Yes o N/A
12. *Eroeion of toe: Yee No N/A
13. *Water impounded against toe: Yes ~ N/A
14. Existing embankment freeboard: see comments 4.9 feet
15. Increase Decrease in water level: No change feet
16. Cracks, bulging, or erosion on upstream face: Yee ~ N/A
17. Visible sumps or sinkholes in slurry surface: Yes No
18. *Clogging
Spillway channels and pipes: Yes ©o N/A
Decant system: Yee No
Diversion ditches: Yea ~ N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yee ~ N A
Decant system: Yee No
20. Trash racks clear and in place: es 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 deecribed (extent, location, volume, etc.) in the space on
the back of this sheet.