HYDRO24511

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/20/1998
• Doc Name: 3rd Qtr 1998 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION PORN
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Michael Altavi7la DATE: 09/1R/98
NPDES I.D. NO.: CO-0000 221 D.P. 004
FACILITY CONFIGURATION: C ross-Val7p~ Pond DATE LAST INSPECTION: _06/29/98
SITE NAME: south Section~ l2 Pond 800d LOCATION: SW$~g'~ ~ TaN R87W
MINE NAME: S n a tt Min (Seneca coal Col LOCATION: 7.1 mi_ c13 of Hayden,
MINE I.D. NO.: (`M]'-Rn Perm +t Nc. C-80-005 OWNER's REP.: Brad Brown Cen Mgr
1
2
3
4
5
6
7.
8.
9.
10.
11.
12.
13.
14.
15.
Foundation preparation (removal of vegetation, stumps,
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
topsoil:
1Z
es
Yea
No
in.
No
No
Angle of elope: 5:1 upstream, 2:1 downstream Total = 7:1
*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:
Cracks or scarps on treat:
cracks or scarps on elope:
Sloughing or bulging on elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Eroeion of toe:
*Water impounded against toe:
Existing embankment freeboard: See comments
Increase Decrease in water Level: Nn change
16. Cracks, bulging, or erosion on upstream face:
17. Visible sumps or sinkholes in slurry surface:
18. *Clogging
19
20
spillway channels and pipes:
Decant system:
Diversion ditches:
*Cracking or crushing of pipes
spillway pipes:
Decant system:
Trash racks clear and in place:
Yes o
Yee o
Yee
Yee o
Yes o
Yea o
Yes
Yes /N®'
Yes l~
Yes
Yee
Yes o
Yee No
5.3 feet
N/A
NJA
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
N/A
N/A
feet
Yes ~ N/A
Yee No /A
Yea o N/A
Yee N A
Yee No A
Yes ~ N/A
Yes No N/A
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 described (extent, location, volume, etc.) in the space on
the back of this sheet.