2008-03-17_HYDROLOGY - C1981008

• Permit No: C1981008
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/17/2008
• Doc Name: 1st Quarter 2008 Pond Inspections
• From: Western Fuels-Colorado
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: SB1
• Media Type: D
• Archive: No

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PERIODIC INSPECTION FORM
WATER, SEDIMENT, OR SLURRY IMPOUNDMENTS
Inspectors nfame : ~.s,~s Gub~ Date : 13 1`~a~ ~ Q8
NPDES ID. No.:CO-0000213 Date Last Inspected: '~ NuJ p'~
Facility Cor~figuration: Parcel Incised Pond
Site Name: Impoundment #0013 Location:47N16W SEC 36
Mine Name: I~few Horizon Mine Location:l mi.NW of Nucla, CO.
Mine ID No.: CDMG Permit #0008-81
Owners Rep.: R. L. Wade, Mine Manacrer
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 ~ No N/A
4. Burning (sppecify 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.) At isolated points on embankment slopes: Yes ~ N/A
c) At natural hillside: Yes ~ N/A
d) Over widespread areas Yes ~ N/A
e) From downsteam foundation area Yes ~ N/A
f) "Boils" beneath stram or ponded water Yes ~ N/A
7. Cracks or scarps. on crest Yes ~=Y~ N/A
8. Cracks or scraps on slope Yes LA,~ N/A
9. Sloughing or bulging on slope Yes 1~ N/A
10. Major erosion problems Yes 1~Q1 N/A
11. Surface movements in valley bottom or on hillside Yes ~ N/A
12. Erosion of toe Yes ®i N/A
13. Water impounded against toe Yes ~r N/A
14. Existing embankment freeboard (feet) ~ Feet
15. Cracks, bu:Lging, or erosion on upsteam face Yes ~ N/A
16. Visible sumps or sinkholes in slurry surface Yes ~ N/A
17. Clogging
a) Spillway channels and pipes Yes ~, N/A
b) Decant system Yes ¢~ N/A
c) Diversion Ditches Yes Lf~1 N/A
18. Cracking or crushing of pipes
a) Spillway pipes Yes /~IOa
" N/A
b) Decant system Yes N
1 N/A
19. Trash racks clear and in place Ye No N/A
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