HYDRO31317

• Permit No: C1981041
• IBM Index Class Name: Hydrology
• Doc Date: 7/12/2007
• Doc Name: 2nd Quarter 2007 Pond Inspection Report
• From: J.E. Stover & Associates Inc
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

Page 2/3
QUARTERLY POND INSPECTION REPORT
Snowca Coal Compan Quarter: Second 2007
C-81-041 Inspection Date: 27-Jun-07
3/19/2007
Identification
of Pond
s During Inspection:
n Depth
n Max Water Depth
n Max Sed. Depth
ientLevel
9 RSRDA 10 CRDA-2 11-CBA-2 13-North Portal SAE N Decl CBA-1
Sediment Sediment Sediment Sediment FJW Sums Sum
Rills 8 Gulleys No No No
Inadequate Vegetation No No No
Outlet Channel Erosion No No No
Burrows No No No
Other No No No
Structural
Differential Settling
Cracks or Slides
No
No
No
No
No
No
2.0
5.9
r _
0
Problem
Yes/No
No
No
No
No No
No No
No No
No No
No No
Seepage No No No No No No
Other No No No No No No
Appurtenant Structures
Defective Spillways No No No No N/A N/A
Dewatedng Devices Clogged No No No No NIA N/A
Faulty Gates, Etc. No No No No NIA N/A
Other No No No No No No
Additional Comments Sediment level in pond 11 is about 3.5 feet below the top of the sediment pales.
Pond 11 has adequate capacity within the 3.5 feet to contain 25-year event.
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of lrspector: Jim Stover ,~'rF°°°'=°e°°'OO ~~~A&`
J.E. ~ amea
Colorado P. E. 19230 Date