HYDRO30000

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 7/23/1999
• Doc Name: QUARTERLY SEDIMENTATION POND INSPECTIONS SENECA II-W MINE
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PBRIODIC INBPECTION FORM
Water, eedimaat, or Slurry Impoundmaats
INSPECTOR'S NAMEi Michael A7tavil7a DATE: 06/29/99
NPDES I.D. NO.: Ca-DDOD221 O_P_ OD6
FACILITY CONFIGURATION: Creee-Valley Pend DATE LAST INSPECTION: D3/~D/99
SITE NAME: Pend t00 ~/Pre-cettlin0 Basin LOCATION: NW;+ NW3~ ce TSN R98W
MINB NAME: men ca rr-W Mine (ceneca Ceal Cof LOCATION: 8 m,. c of Hayden CO
MINE I.D. NO.: CMi.un permit Ne_ C-82-047 OWNER'S REP.: Brad Brown, Gen 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: 3e1 upstream,
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:
12. *Eroeion of toe:
13. *Water impounded against toe:
14. Existing embankment freeboard: A~nroximar sly
15. Increase ~ Decrease in water level:
16. Cracks, bulging, or erosion on upstream face:
17. Visible sumps or sinkholes in Blurry surface:
18. *Clogging
Spillway channels and pipes:
Decant eyetem:
Diversion ditches:
19. *Cracking or crushing of pipes
Spillway pipes:
Decant eyetem:
20. Trash racks clear and in place:
_ Yee No N/A
12_ in. N/A
_ ~ No N/A
_ Yee No
Total = 6:1 N/A
Yee No
Yee
Yee (~io~
Yee
Yee o
Yee No
Yee
Yee /®
Yee
Yee
Yee
Yes
Yee No
9.5 feet
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
1.0 feet
Yee ~ N/A
Yee No
Yee iJ N A
Yee No A
Yee No N/A
Yee 1o N A
Yee No
Yee No
*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.