2012-08-30_HYDROLOGY - C1980005

• Permit No: C1980005
• IBM Index Class Name: HYDROLOGY
• Doc Date: 8/30/2012
• Doc Name: 2nd Quarter 2012 DMRS
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: DMR’s
• Email Name: JDM
• Email Name: DIH
• Media Type: D
• Archive: No

•
INSPECTOR'S NAME: Dennis Jones
NPDES I.D. NO.: CO- 0000221 D.P. 008
FACILITY CONFIGURATION: Cross - Valley Pond
SITE NAME: Pond #008
MINE NAME: Seneca II Mine (Seneca Coal Co)
MINE I.D. NO.: CMLRD Permit No. C -80 -005
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 slope: 3:1 upstream, 3:1 downstream
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
7. Cracks or scarps on crest:
8. Cracks or scarps on slope:
9. Sloughing or bulging on slope:
10. *Major erosion problems:
PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundme nts r
DATE: 6-l (-I Z
Circle or write in appropriate response
•
DATE LAST INSPECTION: 1 I v I -
LOCATION: SWl /, NWl /, Sec. 7, T5N, R86W
LOCATION: 7.1 mi. SE of Hayden, CO
OWNER'S REP.: Roy Karo, Gen Mgr
Yes
12
Yes
No
Total = 6:1
N/A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
(2
No
No
No
No
No
No
No
No I
1 Q
11. Surface movements in valley bottom or on hillside: <tee O{ttev sicki
12. *Erosion of toe: Yes
13. *Water impounded against toe: Yes
14. Existing embankment freeboard: (normal = 4.7') 11.7 feet
15. Increase Decrease in water level: O feet
16. Cracks, bulging, or erosion on upstream face: Yes CNO, N/A
17. Visible sumps or sinkholes in slurry surface: N/A
18. *Clogging
Spillway channels and pipes: Yes & N/A
Decant system: N/A
Diversion ditches: N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes 60 N/A
Decant system: N/A
20. Trash racks clear and in place: No N/A
21. Discharge rate (gpm)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
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.