HYDRO28926

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 7/26/1999
• Doc Name: 2nd Qtr 1999 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INBPECTION FORK
Wstar, 8sdiaent, or Blurry IWpouaduaats
INSPECTOR'S NAME: N+ hae7 Al av+tla DATE: 06/30/99
NPDE9 I.D. NO.: CO-0000221 n_P. 004
FACILITY CONFIGURATION: Cress-Valley Pend DATE LAST INSPECTION: 03/20/99
SITE NAME: south section 72 Pend tOOd LOCATION: cN~ cF.3~ cec_ 72 TSN R87W
MINE NAMB: Seneca 7T Mine (cane a oat of LOCATION: 7_7 mi. c. of Hayden,_j;0_
MINE I.D. NO.: r:.:r.Pn Perm+ No_ -B0-OOS OWNER'S REP.: Brad Srewn, Gen Mqr
1.
2.
3.
4.
5.
6.
7.
B.
9.
10.
11.
12.
13.
14.
15.
16.
17.
Foundation preparation (removal of vegetation, stumps, topsoil:
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of elope: set upstream, 2e1 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:
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:
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface:
Yee
Yee
Yee
Yee o
Yee
Yee
Yee O
Yee N
Yee o
Yee
Yee o
Yes o
Yee o
5,S feet
1_2 feet
Yee
Yee No
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
/A
18. *Clogging
Spillway channels and pipes: Yee o N/A
Decant system: Yee N/A
Diversion ditches: Yee o N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yea N/A
Decant system: Yee No N/A
20. Trash racks clear and in places ee No N/A
_ es No N/A
_ ..1Z in. N/A
Yee No N A
Yee No /A
Total = 7e7 N/A
*Major adverse changes in Lhasa 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.