HYDRO30163

• Permit No: C1994082
• IBM Index Class Name: Hydrology
• Doc Date: 3/9/2000
• Doc Name: 4th Qtr 1999 Sediment Pond Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION PORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: M' ha t A7 av'71a DATE: 12~30~99
NPDES I.D. NO.: CO-0000221 D.P. O 11
FACILITY CONFIGURATION: Cross-Valte y Pond DATE LAST INSPECTION: 09(2299
SITE NAME: Pond 1011 LOCATION: NR31_SW31.i a~a~ ~6~TSN, R87W
MINE NAME: Yoaet M+ne(c n a -oa o) LOCATION: 8.5 mi. of HaydenT c0
MINE I.D. NO.: C t.Rn p. mi No. -4 4-08 OWNER'S REP.: Brad Brown Gen Mqr
1
2
3
4
5
6
7.
B.
9.
30.
11.
12.
13.
14.
15.
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 elopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
Cracks or ecarpa on crest: _
Cracks or ecarpa on slope:
Sloughing or bulging on elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
*water impounded against toe:
Ex ieting embankment freeboard: Annroximately
Increase Decrease in water level: No change
16. Cracks, bulging, or erosion on upstream face:
17. Visible sumps or sinkholes in slurry surface:
1B. *Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
19
20
*cracking or crushing of pipes
Spillway pipes:
Decant system:
Trash racks clear and in place:
Yes
Yee
Yee
Yee o
Yes o
Yee
Yee
Yea
Yes
Yee
Yea
Yes o
Yea o
].6.5 feet
feet
Yee No
Yes 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
N~A
N~A
N~A
N~A
L~
Yee ~ N~A
Yes No ~1~~
Yee No
Yea No N A
Yee o A
Yes No N
*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.
No
~ in.
ea No
Yee No
Total = 5.8:1