HYDRO23289

• Permit No: C1981008
• IBM Index Class Name: Hydrology
• Doc Date: 1/6/2003
• Doc Name: 4th Quarter 2002 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: ~.,gy ~,~b~, Date: ~Z - 3 n_ot
NPDE S ID. No.:CO-0000213 008 Date Last Inspected: q ."Co-o2.
Faci lity Configuration:Total Encised Pond
Site Name: Impoundment #008 Location:46N15W6
Mine Name: New Horizon Mine Location:2 mi .NW of Nucla, CO.
Mine ID No.: CMLRD Permit #0008-81
Owners Rep.: R. L. Wade, Mine Manager
CIRCLE OR WRITE IN APPROPRIATE RESPONSE
1. Foundation,Preparation (removal of vegetation, stumps., topsoil) es No N/A
2. Lift thickness (inches)
3. Compaction according to approved plan ~ 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 do N/A
b.) At isolated points on embankment slopes: Yes cy}Q(/ 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 xes @ N/A
7. Cracks or scarps on crest Yes ~ N/A
E. Cracks oY scraps On elope Yes ~ N/A
9. Sloughing or bulging on elope Yea ~ N/A
10. ~Maj or', erosion problems Yes ~ N/A
li. Surface movemen[s in Valley bottom or on hillside Yee ~ N/A
12. Erosion of toe - Yea ® N/A
13. Water impounded against toe Yea ~ ,~ N/A
l4: Existing embaakinent freeboard (feet) ~ _ Feet
15. Cracks, bulging, or erosion on upsteam face Yea ® ' N/A
16. Visible sumps or sinkholes in slurry surface Yea ~ N/A
17. Clogging ~ -
a) Spillway channels and pipes Yes ~ N/A
b) Decant system Yea ® N/A
c) Diversion Ditches Yes ~ N/A
18. . Cracking or crushing of pipes _
a) Spillway pipes Yes ® ~. N/A
b) DCCant system Yes ©o N/A
19. Trash racks clear and in place Ye No N/A
N~ ~ 1.'j G1'~~ ~'

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