HYDRO23109

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 10/20/2006
• Doc Name: 3rd Quarter 2006 Sedimentation Pond Inspections
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Imp/oundmentLs
INSPECTOR'S NAME: Dennis Jones DATE: ( _ D v
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FACILITY POnd
CONFIGURATI
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Va11ev DATE LAST INSPECTION: C7 -~ - v
SITE NAME : Pond #016 LOCATION: NE'/. SEA/.. Sec. 27. TSN, RSSW
MINE NAME : Seneca II-W Mine (Seneca Coal Co) LOCATION: 8 mi. S of Hayden. CO
MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Greg g Kitchen, Gen Mqr
Circle or write in appropriate response
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Foundation preparation (removal of vegetation, stumps, topsoil: Yes
Lift thickness: in.
Compaction according to approved plan: Yes
Burning (specify extent and location): No
Angle of slope: 3:1 upstream, 3:1 downstream Total = 61
*Seepage (specify location, color, and approximate volume)
From underdrain pipes: N A
At isolated points on embankment slopes: Yes No N/A
At natural hillside: Yes No N/A
Over widespread areas: Yes No N/A
From downstream foundation area: Yes No 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 o N/A
Surface movements in valley bottom or on hillside: Yes No N/A
*ErOSlOn Of toe: Yes No N/A
*Water impounded against toe: Yes N N/A
Existing embankment freeboard: (normal = 6.8') G,~ feet
Increase Decrease in water level: la y G)ncaa~ll 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 / No) N/A
N A l~
Yes No N/A
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.