HYDRO25556

• Permit No: C1994082
• IBM Index Class Name: Hydrology
• Doc Date: 4/8/2002
• Doc Name: 1st Quarter 2002 Sediment Pond Inspections
• From: Seneca Coal Company
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

NPDES I.D. NO. : CO-0000221 D.P. 012
FACILITY CONFIGURATTON: Cros s-Valley Pond DATE LAST INSPECTION: _~~' ~~~_
SITE NAME: Pon d #012 LOCATION: NE'k N495& Sec 19 T5N R87W_
MINE NAME: Yoa st MinelSeneca Coal Co) LOCATION: 8.5 mi. SE of Hay den CO
MINE I.D. NO.: CMLRD Permit No. C-94-082 OWNER'S REP.: Greaa Kitchen . Gen Mar
PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones DATE: ~`~6'~Z
Circle or write in aovronriate resvonse
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Foundation preparation (removal of vegetation, stumps, topsoil
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of slope: 3.0:1 upstream, 3.0:1 downstream
*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: (normal = 8.0')
Increase Decrease in water level: 1/1d Glw-ku ~
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
12 in.
Yes
No
Total = 6.0:1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
-~
Yes
N/A
No N/A
No N/A
No N/A
No N/A
NO N/A
No N/A
No N/A
No N/A
No N/A
No N/A
o N/A
No N/A
No N/A
feet
feet
N/A
Yes No N/A
Yes No N/A
NLA
Yes No N/A
Yes No N/A
Yes 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.