HYDRO22308

• Permit No: C1981008
• IBM Index Class Name: Hydrology
• Doc Date: 3/24/2003
• Doc Name: 1st Quarter 2003 Sediment Pond Inspection Report
• From: New Horizon Mine
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
WATER, SEDIMENT, OR SLURRY IMPOUNDMENTS
Inspectors Name: ~{s ~ ,bk0. Date: 3- ( o3
NPDE S ID. No.:CO-0000213 009 Date Last Inspected: }Z _3p_o2
Faci lity Configuration:Total Encised Pond
Site Name: Impoundment #009 Location:4 7N16W36
Mine Name: New Horizon Mine Location:2 mi.NW of Nuc la, CO.
Mine ID No.: CMLRD Permit #0008-81
Owners Rep.: R. L. Wade, Mine Manager
CIRCLE OR WRITE IN APPROPRIATE R ESPONSE
1. Foundation Preparation (removal of vegetation, stumps., tops oil) Ye No N/A
2, Lift thickness (inched)
3. Compaction according to approved plan ~ No N/A
4. Burning (specify extend and location) yes No N/A
5. Mgle of elope: 3:1 upstream, 3:1 downstream
6. Seepage (specify location, color, and approx. volume)
a.) From underdrain pipes: yes ~N~ 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) "Boil s" beneath sf ram or ponded water yes ~
~:~/ N/A
7. CZack8 Or scarps on Crest Yes ~7~i N/A
e. Cracks oY scraps on slope Yes ®o N/A
9. Sloughing or bulging on slope Yes ~ N/A
10. Major erosion problems _ yes ~ N/A
11. Surface movements in valley bottom or on hillside yea ~N N/A
12. Erosion of Coe yes NC
~ N/A
13. Water impounded against toe Yes ..
(~
t N/A
l4. Existing embankment freeboard (feet) _~ __ Feet
15. Cracks, bulging, 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 ,~
L~51" N/A
1B. Cracking or crushing of pipes
a) Spillway pipes Yea ~ N/A
b) Decant system Yea ~ N/A
19. Trash racks clear and in place ~ No N/A
3,,D _ 03