2010-05-11_HYDROLOGY - C1981012

• Permit No: C1981012
• IBM Index Class Name: HYDROLOGY
• Doc Date: 5/11/2010
• Doc Name: 1st Quarter 2010 Sediment Pond Inspection Reports
• From: New Elk Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: KAG
• Media Type: D
• Archive: No

QUARTERLY SEDIMENTATION POND INSPECTION REPORT
CDMR Rule 4.05.9(17)
Mine: New Elk RDA Containment SE
NPDES ID. No.: None
Inspection Period: First Quarter 2010
Inspection Date: 03/10/10
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 east 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?
Excellent Moderate ? Poor
Extensive Some Few' None
Yes
4). Erosion of the downstream toe of the embankment? Yes
Cause of erosion can be attributed to:
No I-`
No L---
5). Is seepage occurring through the dam? Yes No
Could this seepage cause potential instability?
SEDIMENT STORAGE CAPACITY
1). Has the design storage capacity of the reservoir been surpassed?
Yes No
Explain:
OTHER OBSERVATIONS:
MSHA Qualified Impoundment 14spector
,3 /, fiD
Date