2009-01-07_HYDROLOGY - C1981041 ‎(2)‎

• Permit No: C1981041
• IBM Index Class Name: HYDROLOGY
• Doc Date: 1/7/2009
• Doc Name: 4th Quarter 2008 Pond Inspection Report
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: MPB
• Media Type: D
• Archive: No

Page 2/3
Operator:
Permit:
Pond Identification
Type of Pond
Status During Inspection:
Design Depth
Design Max Water Depth
Design Max Sed. Depth
Sediment Level
Water Level
Outflow
Features
Erosional
Rills & Gulleys
Inadequate Vegetation
Outlet Channel Erosion
Burrows
Other
Structural
Differential Settling
Cracks or Slides
Seepage
Other
Appurtenant Structures
Defective Spillways
Dewatering Devices Clogged
Faulty Gates, Etc.
Other
Additional Comments
ntenance Required:
of Inspector: Jim Stover
QUARTERLY POND INSPECTION REPORT
Snowca Coal Company
C-1981-041
Quarter: Fourth 2008
Inspection Date: 14-Nov-08 11
9 RSRDA 10 CRDA-2 11-CBA-2 13-North Portal SAE N Decl CBA-1 I
Sediment Sediment Sediment Sediment E/W Sums Sum
Desi n and Actual Depth from S illwa Invert
9.0 9.0 8.0 6.0 n/a 4.4
n/a n/a n/a n/a n/a n/a
4.3 5.3 n/a 2.0 n/a 4.0
6.4 5.6/6.1 3.5 5.8 n/a 3.8
Dr Dr Dr Dr Dr D
0 0 0 0 0 0

Problem Problem Problem Problem Problem Problem
Yes/No Yes/No Yes/No Yes/No Yes/No Yes/No

No No No No No No
No No No No No No
No No No No No No
No No No No No No
No No No No No No
No No No No No No
No No No No No No
No No No No No No
No No No No No No
No No No No N/A N/A
No No No No N/A N/A
No No No No N/A N/A
No No No No No No
Sediment level in pond 11 is about 3.5 feet below the top of the sediment poles.
Pond 11 has adequate capacity within the 3.5 feet to contain 25-year event.
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