HYDRO21851

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 3/13/2000
• 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

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Michael A7tavilla DATE: _ 12/20%Q9
NPDES I.D. NO.: CO-0000 221 D.P. 005
FACILITY CONFIGURATION: C roea-Val y Pond DATE LAST INSPECTION: 09/23/99
SITE NAME: Pond f005 LOCATION: NW's cWlf ceyr. i0 TcN R88W
MINE NAME: Seneca 77-W Mi ne ,~c n a -oal 01 LOCATION: R mi. 5 of Ham den CO
MINE I.D. NO.: CMT.R^ Perm it Ne_ C-82-057 OWNER'S REP.: Hrad Rrewn. Can Mgr
1.
2.
3.
4.
5.
6.
7.
0.
9.
10.
11.
12.
13.
14.
15.
16.
Foundation preparation (removal of vegetation, stumps, topsoil:
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of slope: 3_sc1 upstream,
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:
2.c•1 downstream
+Seepage (specify location, color, and approximate volume)
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:
+Eroeion of toe:
*Water impounded against toe:
Existing embankment freeboard: A~nroximately
Increase Decrease in water level: No change
Cracks, bulging, or erosion on upstream face:
17. Visible sumps or sinkholes in slurry surface:
le.
19
*Clogginq
Spillway channels and pipes:
Decant system:
Diversion ditches:
*Crackinq or crushing of pipes
Spillway pipes:
Decant system:
zo
Trash racks clear and in place:
es No
~~ in
Yee No
Yes No
Total = 6e1
Yes No
Yea
Yea
Yea ~Nd~
Yee `Cx+y~,'
Yee ]~
Yee
Yes
Yee / I(mo)
Yee o
Yes to
Yee o
Yes o
8.4 feet
N/A
N/A
N/A
1~A
N/A
N/A
N A
NJA
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
feet
Yea ® N/A
Yee No /A
Yee ~ N A
Yee No /
Yes ~ N/A
Yee
Yee No /A
ee No N/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.