HYDRO27385

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/20/1997
• Doc Name: 3rd Qtr 1997 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: Micha 7 Al av'lla DATE: 09 ~,~/97
NPDES I.D. NO.: N/A
FACILITY CONFIGURATION: 7nciaed Pond DATE LAST INSPECTION: ~0 ./27/97
SITE NAME: Truck Waeh cu pp7y Pond LOCATION: NWT NEi~ Sec_ 34 T6N R87W
MINE NAME: c n a Min rr (c n a -oa of LOCATION: 7. m'_ c o Hayden,
MINE I.D. NO.: CDMG P rmi No. -80-OOc OWNER'S REP.: Brad Brown Gen Mqr
1. Foundation preparation (removal of vegetation, stumps, topsoil: ea No N/A
2. Lift thickness: ~. inch es
3. Compaction according to approved plan: Yes No N/A
4. Burning (specify extent and location): Yes No ©A
5. Angle of elope: 2:1 upstream, 2:1 downstream Total = 4 :1
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yea No
At isolated points on embankment elopes: Yes N/A
At natural hillside: Yee ~ N/A
Over widespread areas: Yee o N/A
From dOWnet ream fOVndatlOR area: Yea O N/A
"Boils" beneath stream or ponded water: Yes o N/A
7. Cracks or scarps on crest: Yea No N/A
B. Cracks or scarps on elope: Yes o N/A
9. Sloughing or bulging on slope: Yea o N/A
10. *Major erosion problems: Yes N N/A
11. Surface movements in valley bottom or on hillside: Yee ~ N/A
12. *Eroeion of toe: Yes ~ N/A
13. *Water impounded against toe: Yes ~ N/A
14. Existing embankment freeboard: see comments ~~ feet
15. _~ Increase Decrease in water level: 0.5 feet
16. Cracks, bulging, or erosion on upstream face: Yes ~ N/A
17. Visible sumps or sinkholes in slurry surface: Yes No
18. *Clogging
Spillway channels and pipes: Yea No N/A
Decant syet em: Yes No
Diversion ditches: Yes ~ N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yee ® N/A
Decant system: Yes No
20. Trash racks clear and in place: Yea No
*Major adverse changes in these items could cause instability and should be reported to the
Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted
in these items should normally be described (extent, location, volume, etc.) in the apace on
the back of this sheet.