HYDRO22498

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 12/4/2006
• Doc Name: 4th Quarter 2006 Sedimentation Pond Inspection
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sedisent, or Slurry Impound/m(e~nts
INSPECTOR' S NAME: Dennis Jones DATE: I ~ ~ l 3 - ~~
NPDES I.D. NO.: N A 'O
~

FACILITY CONFIGURATION: Incised Pond
DATE LAST -
U
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INSPECTION:
SITE NAME; Truck Wash Settling Pond LOCATION: NW'/. NE`/.. Sec. 34, T6N. R87W
MINE NAME; Seneca ZI Mine (Seneca Coal Co) LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CDMG Permit No. C-80-005 OWNER'S REP.: Gregg Kitchen, Gen Mgr
Circle or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes
2. Lift thickness: N/A inches
3. Compaction according to approved plan:
4. Burning (specify extent and location):
5. Angle of slope: upstream, downstream Total = N A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment slopes: N A
At natural hillside: N A
Over widespread areas: N A
From downstream foundation area: N A
"Boils" beneath stream or ponded water: Yes No N/A
7. Cracks or scarps on crest:
8. Cracks or scarps on slope:
9. Sloughing or bulging on slope: 1A

10.
*Major erosion problems:
Yes /Y~
~rvo1 N/A
11. Surface movements in valley bottom or on hillside: NL ~~~
12, *Erosion of toe:
13. *Water impounded against toe:
14. Existing embankment freeboard: (normal = 5.0') $_25 feet
15. Increase n Decrease in water level: x•25 feet
16. Cracks, bulging, or erosion on upstream face:
17, Visible sumps or sinkholes in slurry surface:
18, *Clogging
Spillway channels and pipes: Yes ~ N/A
Decant system:
Diversion ditches: N A
19, *Cracking or crushing of pipes
Spillway pipes: Yes No N/A
Decant system: N 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 space on
the back of this sheet.