HYDRO30098

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 11/18/2004
• Doc Name: 3rd Quarter 2004 Quarterly Sedimentation Pond Inspection
• From: Seneca Coal Company
• 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: Dennis Jones DATE:g 30 - ©`I
NPDES I.D . NO.: N/A ~_~ LI O
FACILITY CONFIGURATION: Cross-Va11ev Pond DATE LAST INSPECTI ON:
SITE NAME : Pond #016A LOCATION: NE'/< SE'/., Sec. 27, TSN R88W
MINE NAME : Seneca II-W Mine (Seneca Coal Co) LOCATION: 8 mi. S of Havden, CO
MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Greg g Kitchen, Gen Mgr
Circle or write in aopronriate resvonse
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Foundation preparation (removal of vegetation, stumps, topsoil: Yes
Lift thickness: in.
Compaction according to approved plan:
Burning (specify extent and location): No
Angle of slope: 3:1 upstream, 3:1 downstream Total = 6_1
*Seepage (specify location, color, and approximate volume)
From unde rdrain pipes: N A
At isolated points on embankment slopes: ~ Yes No N/A
At natural hillside: Yes No N/A
Over widespread areas: Y No N/A
From downstream foundation area: Yes -{de N/A
"Boils" beneath stream or ponded water: Yes No N/A
Cracks or scarps on crest: Yes No N/A
Cracks or scarps on slope: Yes No N/A
Sloughing or bulging on slope: Yes No N/A
*Maj or erosion problems: Yes No N/A
Surface movements in valley bottom or on hillside: Yes N/A
*Erosion of toe: Yes No NfA
*Water impounded against toe: Yes N N/A
Existing embankment Freeboard: (normal = 5.0') ~
.
~ feet
Increase ~ Decrease in water level: 1
~
!- ~ feet
Cracks, bulging, or erosion on upstream face: Yes No N/A
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/A
N A
Yes ~ N/A
N A
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.