HYDRO28854

• Permit No: M1982036
• IBM Index Class Name: Hydrology
• Doc Date: 2/6/1985
• Doc Name: PERIODIC INSPECTION FORM WATER SEDIMENT OR SLURRY IMPOUNDMENTS
• Media Type: D
• Archive: No

PERII III IIIIIIIIIIIII III aund~ts
Nater, Sedi~
000
INSPECTOR' S NAME: ~ ~e ~,,~ ~ 5 ~o ~..P 5
N.P.D.E.S. I.D. NO.: CO-0037656 D.P. 001
FACILITY CONFIGURATION: Cross Valley Pond
SITE NAME: Mesa Gravel Pit Im oundment
MINE NAME: Mesa Gravel Pit (Peabody Coal Company
MINE I.D. NO.: CMLRB Permit No. 82-36
DATE: ~' G - S
F~1,-;~0
DATE LAST INSPECTION: l~'a7"g~I
LOCATION: NE',SE;, Sec.18, T6N, R87W
LOCATION: 3.8 mi. ESE of Hayden, C
OWNER'S REP.: Don Zulian, Supt.
Circle ar 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:~stream, 2.4:1 downstream, total = 4.4:1
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes
At isolated points on embankment s opes
At natural hillside
Over widespread areas
From downstream foundation area
"Boils" beneath stream or ponde water
7. Cracks or scarps on crest
8. Cracks or scarps on slope
es No
12 inches
es No
Y(9L9(Xk4d(
- ~~
Yes ~
Yes
Yes
Yes ~o
Yes ~
Yes ®o
es No
Yes Q~
9. Sloughing or bulging on slope Yes ~
10. *Major erosion problems Yes ~
11. Surface movements in valley bottom or on hillside ® No
12. *Erosion of toe Yes
13. *Water impounded against toe Yes ®o
14. Existing embankment freeboard (feet) 0.a1~.1o" ,r,~..~ U-kot~l+ wQ:w 2 feet
15. Increase /~ Decrease in water level (feet) <D~1 feet
16. Cracks, bulging, or erosion on upstream face Yes ~
17. Visible sumps or sinkholes in slurry surface N/A ~(X~'p
18. *Clogging
Spillway channels and pipes Yes i®
Decant system Yes
Diversion ditc es Yes
19. *Cracking or crushing of pipes
Spillway pipes In /~ des- -Ne
Decant system Yes ~1p7
20. Trash racks clear and in place ___N1A_ k'Xi61(XXtt3(
*Major 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.