2008-03-28_HYDROLOGY - C1981012 ‎(2)‎

• Permit No: C1981012
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/28/2008
• Doc Name: Fourth Quarter 2007 Pond Inspections
• From: Peak Project Management, LLC
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• 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: Fourth Quarter 2007
Inspection Date: 12/2$107
General Description or Reference to Site Plan:
This partially incised containment basin is anon-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 ew Poor
Extensive ~ Few None
Yes
4). Erosion of the downstream toe of the embankment? Yes
Cause of erosion can be attributed to:
No
No t7i--
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 Impoundm nt Inspector
1 z~~s~~~7
Date