HYDRO25372

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 4/6/1995
• 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

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INSPECTOR'S NAME: a 's
NPDES I.D. NO.: CO-000
FACILITY CONFIGURATION:
SITE NAME: Pond #005
MINE NAME: Seneca II-W M
MINE I.D. NO.: CMLRD Pere
P&RIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
Jones DATE: 03/28/95
221 D.P. 005
toss-Valley Pond DATE LAST INSPECTLON: 12/09/94
LOCATION: NWS: SWS:. Sec. 10. TS N. R88W
ne (Seneca Coal Co) LOCATION: 8 mi. S of Hayden. CO
it No. C-82-057 OWNER'S REP.: Scott Williams. Gen Mor
Cirole or write in appropriate response
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S
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7.
8.
9-
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Foundation preparation (removal of vegetation, stumps, topsoil: Yes No NJA
Lift thickness: 12 in. N/A
Compaction according to approved plan: ~ es No N A
Burning (specify extent and location): ~ Yes No /A
Angle of slope: 3.5:1 upstream, 2.5:1 downstream Total = 6:1 N/A
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment slopes:
Rt 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:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
*W stet impounded against toe:
Existing embankment freeboard: Aooroximately
X Increase Decrease in water level: Aooroximately
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:
Yes N N/A
Yes N(A
Yes No N/A
Yes o N/A
Yes o N/A
Yes N/A

Yes N/A
Yes C~
7No ))~~o ~~ N/A
Yes No N/A
Yes o N/A
Yes o N/A
Yes o N/A
Yes o N/A
10.4 feet
9.1 feet
Yes No N/A
Yes No ~'
Yes ~lo' N/,j~
Yes No (~~
Yes ~ N/A
Yes ~ N/A
Yes Nc ~'
es 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 space on
the back of this sheet.