2010-11-12_HYDROLOGY - C1981008

• Permit No: C1981008
• IBM Index Class Name: Hydrology
• Doc Date: 11/12/2010
• Doc Name: 4th Quarter 2010 Sediment Pond Inspection Report
• From: Western Fuels Colorado
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: MLT
• Email Name: SB1
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
WATER, SEDIMENT, OR SLURRY IMPOUNDMENTS
Inspectors Name:S? F`.? Date: Ib Klog ZptD
NPDES ID. No.:CO-0000213 Date Last Inspected: ia
Facility Configuration:-Cross Valley Pond
Site Name: Impoundment 4007 Location:46N15W SEC 6
Mine Name: New Horizon Mine Location:l mi.NW of Nucla, CO
Mine ID No.: CDMG Permit #0008-81
Owners Rep.: R. L._ Wade Mine Manager
CIRCLE OR WRITE IN APPROPRIATE RESPONSE
1. Foundation Preparation (removal of vegetation, stumps., topsoil) Yes No N/A
2. Lift thickness (inches)
3. Compaction according to approved plan Ye No N/A
4. Burning (specify extend and location)
Yes
?
N/A.
5. Angle of slope: 3.1 upstream, 3:1 downstream
6. Seepage (specify location, color, and approx. volume)
a•) From underdrain pipes: Yes ® N/A
b.1 At isolated points on embankment slopes: Yes N/A
c) At natural hillside:

d) Over widespread areas Yes ® N/A

e) From downsteam foundation area Yes
Yes i?
® N/A
N/A
f) "Boils" beneath stram or ponded water Yes (:0 N/A
7. Cracks or scarps on crest
Yes
Q
N/A
8. Cracks or scraps on slope
Yes
4V
N/A
9. Sloughing or bulging on slope
Yes
Q
N/A'
10. Major erosion problems

11.
Surface movements in valley bottom or on hillside Yes

Yes ®

® N/A

N/A
12. Erosion of toe

13.
Water impounded against toe Yes 90 N/A

14.
Existing embankment freeboard (feet)
15(.4-1R_ 2 44U " Yes (Q?

is
I
-7 N/A

15. -_.
Cracks, bulging, or erosion on upsteam face .

Yes

® Feet

N/A
16. Visible sumps or sinkholes in slurry surface
Yes
®o,
N/A
17• Clogging
a) Spillway channels and pipes Yes N/A
b) Decant system Yes ?I N/A
c) Diversion Ditches Yes ® N/A
18. Cracking or crushing of pipes
a) Spillway pipes Yes N/A
b) Decant system Yes

19.
Trash racks clear and in place N/A
No N/A
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