HYDRO24010

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 6/18/1990
• Doc Name: QTRLY SEDIMENTATION POND INSPECTIONS SENECA II-W MINE
• From: PEABODY COAL CO WESTERN DIV
• To: MLRD
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones DATE: 5/7/90
NPDES I.D. NO.: CO-0000 2 D.P. 006
FACILITY CONFIGURATION: Cross-Valle Pond DATE LAST INSPECTION: 3/6/90
SITE NAME: Pond 1100 LOCATION: NW; ,NW#, Sec.22,T5N,R88W
MINE NAME: Seneca Mine I -W Pea ody Coa Co LOCATION: 8 mi. S of Hayden, C
MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Don Zulian, Supt.
Circle or write in aoorooriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil): _ ~e No N/A
2. Lift thickness: 12 in. N/A

3. Compaction according to approved plan: Ye No N/A
4. Burning (specify extent and location): Yes No
5. Angle of slope: 3:1 upstream, 3:1 downstream Total = 6:1 N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes No !~/.
At isolated points on embankment slopes: Yes ® N/A
At natural hillside: Yes ® N/A
Over widespread areas: Yes ® N/A
From downstream foundation area: Yes ® N/A
"Boils" beneath stream or ponded water: Yes ® N/A
7. Cracks or scarps on crest: Yes ® N/A
8. Cracks or scarps on slope: Yes ® 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: See comments Ye No N/A
12. *Erosion of toe: Yes ® N/A
13. *Water impounded against toe: Yes ® N/A
14. Existing embankment freeboard: See Comments 15 feet
15. X Increase Decrease in water level: See comments 9 feet
16. Cracks, bulging, or erosion on upstream face: Yes ® N/A
17. Visible sumps or sinkholes in slurry surface: Yes ~ N/A
18. *Clogging
Spillway channels and pipes: Yes ® y/~
Decant system: Yes No ~
/
A
Diversion ditches: Yes No 'kl
'!
~i7
19. *Cracking or crushing of pipes
Spillway pipes: Yes ® A
Decant system: Yes No N~/
20. Trash racks clear and in place: Ife No N/A
*Major adverse changes in these items could cause instability and should be reported t o the
Engineering Manager and Mine Superintendent for further evaluation. Adverse condition s
noted in these items should normally be described (extent, location, volume, etc .) in the
space on the back of this sheet.