HYDRO25653

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 2/18/1988
• Doc Name: 1st qtr 1987 Inspections
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTIUN FURM
' Mater, Sedlr.~t, or Slurry Impoundments
INSPECTOR'S NAME:~~ „~..~ ~ s ~~ ~.c~ ;
N.P.D.E.S. 1.D. NO.: _cn-nnnro~l n.p nn~
FACILITY CONFIGURATION: Crncs-Valley Pond
SITE NAME; Smrth Certinn 17 Pnnd Hn07
MINE NAME: ' ~,,,,Pra Ii Mine (Peahndy foal fomoanvl
MINE I.D. NO,; EMI RR permit Nn_ f.-rlll5-Rn
DATE: ~-~ 3- %5~
DATE LAST INSPECTION: ~ 2 - 3 1- 5S ~
LOCATION: SF!;N-rE's. Sec. 12, TSN,.. R~7W
LOCATION: 7.1 mi. SE of Havden, CU
OWNER'S REP.: Uon Zulian. Srlpt.
Circle or write in appropriate resparse
1. Foundation preparation (removal of vegetation, stumps, topsoil7)
2. Lift thickness (inches)
3. Compaction according to approved plan
4. Burning (specify extent and location) N/A
5. Angle of slope ~degre~ 3.1 nnstraam 3~1 dnwnstream. total
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes
At isolated points on em ankment s opes
At natural hillside .
Over widespread areas
From downstream founda on area
"Boils" beneath stream or ponde water
7. Cracks or scarps on crest
H. Cracks or scarps on slope
9. Sloughing or bulging on slope
10. *Ma,)or erosion problems
11. Surface movements in valley bottom or on hillside
Ye No
___1Z 1 nches
Yes No
Yxec~cxx-ka
= 6 1 X19'
Yes c[~
YesYes
Yes ~
Yes f~N
Yes ~n
Yes ~
Yes No
Yes ©o
Yes
Yes
Yes ~
12. *Erosion of toe Yes ~o
13. *Water impounded against toe Yes No
14. Existing embankment freeboard (feet) ~04~ ~S,„',~,p r"I W.~:•le•.• > ~3=7 feet
15. (~ Increase Decrease in water level (feet) h~ feet
16. Cracks, bulging, or erosion on upstream face YesU
17. Visible sumps or sinkholes in slurry surface tl/A YY7tl5cXN14
18. *Clogging
Spillway channels and pipes Yes
Decant system N/A *T-~ie•
Diversion ditc es Yes iio
19. *Cracking or crushing of pipes
Spillway pipes Yes rl
Decant system N/A ~---•:P
20. Trash racks clear and in place ~ N
0
*Ma Jor adverse changes in these items could cause instability and sfrould be reported to
the Engineering Manager and Mine Superintendent for further evaluation. Adverse condi-
tio ns noted in these items should normally be described (extent, location, volume, etc.)
in the space on the back of this sheet.