HYDRO29354

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 7/5/1996
• 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 Altavilla DATE: 06 /05/96
NPDES I.D. NO.: CO-0000221 D.P. 009
FACILITY C ONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 03/11/96
SITE NAME: Pond #009 LOCATION: SES: SWS:, Sec. 11, TSN. R88W
MINE NAME: Seneca II-W Mine (Seneca Coal Col LOCATION: 8 mi. S of Ha yden. CO
MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S RE P.: Brad Brown, Gen Mor
Circle or write in aoorooriate reaoonae
1
2
3
4
5
6
7.
8.
9.
10
11
12
13
14
15
16
17
18
19
20
Foundation preparation
Lift thickness:
Compaction according to
Burning (specify extent
Angle of slope: 3:1
(removal of vegetation, stumps, topsoil:
12
approved plan:
and location): Yes
upstream, 3:1 downstream Total =
*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 slope:
Sloughing or bulging on slope:
*Maj or erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
+Water impounded against toe:
Existing embankment freeboard: Aooroximately
X Increase Decrease in water level:
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:
No N/A
in. N/A
No N/A
No /A
6:1 N/A
Yes N N/A
Yes N A
Yes N/A
Yes N/A
Yes N/A
Yes N/A
Yes o N/A
Yes N/A
Yes o N/A
Yes o N/A
Yes N/A
Yes N/A
Yes N/A
6.9 feet
3.0 feet
Yes /N~) N/A
Yes No
Yes r~lo~ (g
Yes o /IG
/
},
~

Yes
No Lr1
t
r~
,
`7
Yes N~ N A
Yes No
es No N/A
*Maj or 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 space on the back of this sheet.