HYDRO29612

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 12/7/1990
• 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

t PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Rnn f,PhrkP DATE: 10/20/90
NPDES I.D. NO.: ~-0000221 D.P. 006
FACILITY CONFIGURATION: Cross-Valle Pond DATE LAST INSPECTION: 7/24/90
SITE NAME: Pond 1006 LOCATION: NW;,NW}, Sec.22,T5N,R88W
MINE NAME: Seneca Mine II-W Pea ody oa 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 appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil): _ es 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 N/A
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 N/
At isolated points on embankment slopes: Yes N 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~ 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 Ves ~ N/A
12. *Erosion of toe: Yes ® N/A
13. *Water impounded against toe: Yes ~ N/A
14. Existing embankment freeboard: 17.5 feet
15. Increase Decrease in water level: ~_n 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
Decant system: Yes No
Diversion ditches: Yes No /
19. *Cracking or crushing of pipes
Spillway pipes: Yes
Decant system: Yes No !~/
20. Trash racks clear and in place: Ye No N/A
*Major adverse changes in these items could cause instability and should be repor ted 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.