HYDRO25556

• Permit No: C1994082
• IBM Index Class Name: Hydrology
• Doc Date: 4/8/2002
• Doc Name: 1st Quarter 2002 Sediment Pond Inspections
• From: Seneca Coal Company
• To: DMG
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundmen-t7s
INSPECTOR'S NAME: Dennis Jones _ DATE: ~`~ !-~ Z
NPDES I,D. NO.: CO-0000221 D.P. 011 O
FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: ~:~_.~_._
SITE NAME: Pond #011 LOCATION: NEB SWi/a Sec. 16, TSN, R87W
MINE NAME: Yoast Mine(Seneca Coal Col LOCATION: 8.5 mi SE of Hayden CO
MINE I.D. NO.: CMLRD Permit No C-94-082 OWNER'S REP.: Greoa Kitchen Gen Mar
Circle or write in aonrouriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil: Y~
2. Lift thickness: ~ _ in .
3. Compaction according to approved plan: Y~
4. Burning (specify extent and location): IJo
5. Angle of slope: 3.0:1 upstream, 2.8:1 downstream Total = 5.8: 1
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes No~ N/A
At isolated points on embankment slopes: Yes No N/A
At natural hillside: Yes No N/A
Over widespread areas: Yes No N/A
From downstream foundation area: Yes No N/A
"Boils" beneath stream Or ponded water: Yes No N/A
7. Cracks or scarps on crest: Yes No N/A
8. Cracks or scarps on slope: Yes No N/A
9. Sloughing or bulging on slope: Yes No N/A
10. *Maj or erosion problems: Yes No N/A
11. Surface movements in valley bottom or on hillside: Yes No N/A
12. *Erosion of toe: Yes No N/A
13. *Water impounded against toe: Yes N N/A
14. Existing embankment f eeboard: (normal = 5.1'1 ~ feet
15. Increase Decrease in water level: ~ feet
16. Cracks, bulging, or erosion on upstream face: Yes No N/A
17. Visible sumps or sinkholes in slurry surface: NLA
18. *Clogging
Spillway channels and pipes: Yes IVO N/A
Decant system: N/A
Diversion ditches: 1~
19. *Cracking or crushing of pipes
Spillway pipes: Yes No N/A
Decant system: N/A
20. i
Trash racks clear and in place: (~~~ lpaow~ ~..~ (p ace_
*Major adverse changes in these items could cause instability and shou ld be reported to
the Engineering Manager and Mine Superintendent for further eval uation. Adve rse
condi tions noted in these items should normally be described (extent, location, volu me,
etc.) in the space on the back of this sheet.