HYDRO23891

• Permit No: M1982036
• IBM Index Class Name: Hydrology
• Doc Date: 6/18/1987
• Doc Name: PERIODIC INSPECTION FORM WATER SEDIMENT OR SLURRY IMPOUNDMENTS
• Media Type: D
• Archive: No

` ~r, Sediwent ar Slurry I pouts III IIIIIIII I
INSPECTOR'S NAME: ~ Fes' ti h Z S ~ o vLe DATE: G ' ~ ~S ' B
N.P.D.E.S: I.D. NO.: " CO-0037656 D.P. 001
FACILITY CONFIGUtATION: Cross Valley Pond DATE LAST INSPECTION: 3 'Z 3 ' ~7
SITE NAME: M sa Gravel Pit Im oundment LOCATION:. NE;SE'a, Sec. 18, T6N, R87W
MINE NAME: Mesa Gravel Pit Peabodv~nal Company LOCATION: 3.8 mi. ESE of Ha en, C ~
MINE I.D. NO.: CMLRB Perm' o. 82-36_ 1 OWNER'S REP.: Don Zu ian, Supt.
Circle or write in appropriate response
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 `,'_ _2_:1_upstream, 2.4:1 downstream, total = 4.4:1
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 founds on area
°Boils" beneath stream or ponde water
7. Cracks or scarps on crest
B. 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
12. *Erosion of toe
13. *Water impounded against toe
14. Existing embankment freeboard (feet) c~~l 1,~~~v
15. Increase ~~ Decrease in water level (feet) ~T ~
16. Cracks, bulging, or erosion on upstream face
17. Visible sumps or.sinkholes in slurry surface N/A
18. *Clogging
Spillway channels and pipes
Decant system
Diversion ditc es
19. *Cracking or crushing of pipes
Spillway pipes NJA
Decant system
20. Trash racks clear and in place N/A

es No
12 inches
es No
Ycacscxxrta
~. ~~
No
Yes No
Yes No
Yes No
Yes No
Yes No
es No
Yes No
Yes No
Yes No
No
Yes No
Yes No
_Z feet
llZ feet
Yes to
X~
Yes did
Yes loo
Yes ~
-,"-e3---Nv
Yes ~o
)Y)tlkX X)bEh~(
*Mafor adverse changes in these items could cause instability and should be reported to
the Engineering Manager and Mine Superintendent for further evaluation. Adverse condi-
tions noted in these items should normally be described (extent, location, volume, etc.)
in the space on the back of this sheet.