HYDRO30147

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/13/1995
• Doc Name: 3rd Qtr 1995 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Rov Raro
NPDES I.D. NO.: CO-0000221 D.P. 008
FACILITY CONFIGURATION: Cross-Valley Pond
SITE NAME: Pond #008
MINE NAME: Seneca II Mine (Seneca Coal Co)
MINE I.D. NO.: CMLRD Permit No. C-80-005
DATE: 09/25/95
DATE LAST INSPECTION: 06/28/95
LOCATION: SWY NWy. Sec. 7. TS N. R86W
LOCATION: 7.1 mi. S of Hayden. CO
OWNER'S REP.: Scott Williams. Gen Mar
Circle or write in aonrooriate reeconae
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: es No N/A
9. 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 o N/A
At natural hillside: Yes o N/A
Over widespread areas: Yes N/A
From downstream foundation area: Yes o N/A
"Boils" beneath stream or ponded water: Yes o N/A
7. Cracks or scarps on crest: Yes o 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: Yes ~ N/A
12. *Erosion of toe: Yes ~ N/A
13. +Water impounded against toe: Yes ~ N/A
19. Existing embankment freeboard: See comments 7 Eeet
15. Increase Decrease in water level: No chance feet
16. Cracks, bulging, or erosion on upstream face: Yes ® N

17.
Visible sumps or sinkholes in slurry surface:
Yes
No ®
18. +Clogging
Spillway channels and pipes: Yes No
Decant system: Yes No
Diversion ditches: Yes No
19. +Cracking or crushing of pipes
Spillway pipes: Yes ® N A
Decant system: Yes No /A
20. Trash racks clear and in place: es No N/A
*Ma jor adverse changes in these items could cause instability and shou ld be reported to the
Engineering Manager and Mine Superintendent for further evaluation. Ad verse con dition s noted
in these items should normally be described (extent, location, volume, etc.I in the space on
the back of this sheet.