2012-04-05_HYDROLOGY - C1981041 ‎(5)‎

• Permit No: C1981041
• IBM Index Class Name: HYDROLOGY
• Doc Date: 4/5/2012
• Doc Name: 1st Quarter 2012 Quarterly Pond Inspection Report
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: MPB
• Email Name: SB1
• Media Type: D
• Archive: No

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
QUARTERLY POND INSPECTION
REPORT
Quarter:
Inspection Date:
Page 1/1
Snowcap Coal Company
First 2012
C- 1981 -041
15- Mar -12
6 CRDA -1
9 RSRDA
10 CRDA -2
11 -CBA -2
13 -North Portal
CBA -1
Sediment
Sediment
Sediment
Sediment
Sediment
Sump
Design and Actual De
-3th from Spillway Invert
8.0
9.0
9.0
8.0
6.0
4.4
n/a
n/a
n/a
n/a
n/a
n/a
5.4
4.3
5.3
n/a
2.0
4.0
4.9/7.2/4.8
6.4
5.6/6.1
3.4/3.5
5.8
3.8
Dry
Dry
Dry
Dry
Dry
Dry
0
0
0
0
0
0
Features
Problem
Problem
Problem
Problem
Problem
Problem
Yes /No
Yes /No
Yes /No
Yes /No
Yes /No
Yes /No
Erosional
Rills & Gulleys
Inadequate Vegetation
Outlet Channel Erosion
Burrows
Other
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
Structural
Differential Settling
Cracks or Slides
Seepage
Other
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Appurtenant Structures
Defective Spillways
Dewatering Devices Clogged
Faulty Gates, Etc.
Other
No
No
No
No
No
N/A
No
No
No
No
No
N/A
No
No
No
No
No
N/A
No
No
No
No
No
No
Additional Comments Sediment level in pond 11 is about 3.5 feet below the top
Pond 11 has adequate capacity within the 3.5 feet to contain
.
Maintenance Required: None ♦ • ® %; •
• 0.x.
a ;�
%.o :
Name of Inspector: Jim Stover v
of the sediment poles.
25 -year event.
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Colo ?2M 1 19230 Date