2011-10-04_HYDROLOGY - C1981012

• Permit No: C1981012
• IBM Index Class Name: Hydrology
• Doc Date: 10/4/2011
• Doc Name: 3rd Quarter 2011 Quarterly Sediment Pond Inspecition Report
• From: New Elk Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: DIH
• Media Type: D
• Archive: No

QUARTERLY SEDIMENTATION POND INSPECTION REPORT
Mine: New Elk RDA Containment SW
NPDES ID. No.: None
Inspection Period: Third Quarter 2011
Inspection Date: 09/30/11
General Description or Reference to Site Plan:
This partially incised containment basin is a non - discharging facility designed to contain run -off
from the area west of the RDA belt conveyor and south of highway 12.
EMBANKMENT
1). Adequacy of the vegetative cover:
2). Erosion forming Gullies:
3). Is wave action causing erosion:
On the Upstream embankment?
CDMR Rule 4.05.9(17)
Excellent Moderate
Extensive Some None
Yes
4). Erosion of the downstream toe of the embankment? Yes
Cause of erosion can be attributed to:
5). Is seepage occurring through the dam?
Could this seepage cause potential instability?
SEDIMENT STORAGE CAPACITY
Explain:
OTHER OBSERVATIONS:
MSHA Qualified Impoundme
- 3° - ; © /I
Date
1). Has the design storage capacity of the reservoir been surpassed?
Yes No
f VI e...(11.600 S 4 e
Poor
Yes No
No f
No L-