HYDRO27713

• Permit No: C1994082
• IBM Index Class Name: Hydrology
• Doc Date: 10/20/1998
• Doc Name: 3rd Qtr 1998 Sediment Pond Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PSRIODIC INSPECTION PORN
Water, Sediment, or Slurry Impoundmeata
INSPECTOR'S NAME: Michael Altavilla DATE: 09 ~]B/98
NPDES'I.D. NO.: co-0000221 D.P. 0 11
FACILITY CONFIGURATION: trees-Va71pa . Pond DATE LAST INSPECTION: 06/29/98
SITE NAME: Pond f011 LOCATION: N$i~ cW;~ cec_ 16 TSN R87W
MINE NAME: Yeast MinP(c_eneca Coal C e) LOCATION: 8.5 mi_ a8 of Hayden, Co
MINE I.D. NO.: C.MLRD Permit No. C-9 d-OB2 OWNER'S REP.: Brad Brawn can MQr
1
2
3
4
5
6
7.
8.
9.
10
11
Foundation preparation (removal of vegetation, stumps, topsoil:
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of elope: 3.0:1 upstream, 2.8:1 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:
Cracks or scarps on crest:
Cracks or scarps on, elope:
Sloughing or bulging on elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
12. *Eroeion of toe:
13. *Water impounded against toe:
14. Existing embanlaoent freeboard: Annro:imately
15. Increase ~ Decrease in water level:
16. Cracks, bulging, or erosion on upstream face:
17. Visible sumps or sinkholes in slurry surface:
1B. *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:
Yee No
Yea N
Yee o
Yes No
Yee o
Yes o
Yee o
Yee ©o
Yes No
Yes ©o
Yes
Yes o
Ye9 O
17 S feet
123 feet
Yee
Yee No
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
N/A
N/A
/A
Yes No N/A
Yee No
Yes No /A
Yes ©o N A
Yee No N A
Yee No 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.
_ Yes No
-~ in.
Ye No
Yes No
Total = 5. 9.1