HYDRO30127

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 7/21/1998
• Doc Name: 2nd Qtr 1998 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORN
water, Sediment, or Slurry Impoundmeats
INSPECTOR'S NAME: Michael Altavilla DATE: 06/29/98
NPDES I.D. NO.: CO-0000221 D.P. 002
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: 0~/t8/gB
SITE NAME: Wedge Impoundment #002 LOCATION: NW~~~ _cec. 34 T6N R87W
MINE NAME: Seneca 77 Mine (S n a -oal Col LOCATION: 7.1 m+. cF of Ha~3p~. CO
MINE I.D. NO.: C r.Rn p mi No_ -BO-OOS OWNER'S REP.: Brad Brown, Gen Mqr
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
1B.
19
20.
Foundation preparation (removal of vegetation, stumps, topsoil: Yee xo
Lift thickness: in.
Compaction according to approved plan: Yee No
Burning (specify extent and location): Yea No
Angle of elope: upstream, downstream Total = /A
*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:
"BOila" beneath stream or ponded water:
Cracks or ecarpe on treat:
cracks or ecarpe on elope:
Sloughing or bulging on slope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Eroaion of toe:
*Water impounded against toe:
Existing embankment freeboard: see comments
Increase Decrease in water level: No change
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface:
*Clogging
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 1~/
Yea No ,`~?'(~T')
Yes o N/A
Yee o N A
Yee No N
Yee ~ N/A
Yes No A
Yea No /
Yes No N
Yee ~ N/A
Yee N N/A
Yea No
Yee No N
[i/A feet
feet
Yes No
Yee No N
Yee ~ N A
Yes No
Yee ® N/A
Yee No N A
Yee No
ee No N/A
*Major adverse changes in.theee 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.