HYDRO22517

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 1/11/1999
• Doc Name: QUARTERLY SEDIMENTATION POND INSPECTIONS SENECA II-W MINE
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PBRIODIC INSPBCTION FORM
Water, Sedinaai, or Blurry Impouadmeats
INSPECTOR'S NAME: Michael Altavilla DATE: 12/02/98
NPDES I.D. NO.: CO-0000 221 A.P. 009
FACILITY CONFIGURATION: C rnsa-Valley Pond DATE LAST INSPECTION: 09/21/98
SITE NAME: Pond 1F009 LOCATION: SF.ii cWii Sec. It mSN aBeW
MINE NAME: Seneca Ir-W M+ ne (Seneca Coal Col LOCATION: 8 mi_ S of Haden CO
MINE I.D. NO.: cui.an P m i No_ --8 -057 OWNER'S REP.: Brad Brown Gen Mgr
1.
2.
3.
4.
5.
6.
Foundation preparation (removal of vegetation, stumps, topsoil:
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of elope: 3:1 upstream, 3:1 downstream
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment elopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
''Boils" beneath stream or ponded water:
7. Cracks or scarps on treat:
B. Cracks or scarps on elope:
9. Sloughing or bulging on slope:
10. *Major erosion problems:
11. Surface movements in valley bottom or on hillside:
12. *Eroeion of toe:
13. *Water impounded against toe:
14. Existing embankment freeboard: ApQrox imatel~
15. Increase ~_ Decrease in water level:
16. Cracks, bulging, or erosion on upstream face:
17. Visible sumps or sinkholes in slurry surface:
18.
19.
*Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
*Cracking or crushing of pipes
Spillway pipes:
Decant system:
20. Trash racks clear and in place:
ee No
_12_ in
es No
Yee No
Total = 6:1
Yee No
Yee o
Yea o
Yee o
Yee o
Yes o
Yee
Yee N
Yea
Yee
Yes o
Yee o
Yes o
fl.3_ feet
N/A
N/A
N/A
/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
L25 feet
Yee ~ N/A
Yee No /A
Yee ®o N A
Yee No
Yes No A
Yee ~ N A
Yee No /A
~
( ICS 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.