HYDRO28200

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 9/4/2001
• Doc Name: 2nd Qtr 2001 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 Ia~oundmente
INSPECTOR'S NAME: Dennis Jones DATE: 06/28/01
NPDES I.D. NO.: N/A
FACILITY CONFIGURATION: Incised Pond DATE LAST INSPECTION: 03/30/01
SITE NAME: Truck Wash S uooly Pond LOCATION: NWT NE'/,. Sec. 34. T6N. R87W
MINE NAME: Seneca Mine II (Seneca Coal Co) LOCATION: 7.1 mi. SE of Hayden CO
MINE I.D. NO.: CDMG Per mit No C-80-005 OWNER'S REP.: Greaa Kitchen. Gen Mar
Circle or write in aoorovriate reeoonae
1. Foundatiorr preparation (removal of vegetation, stumps, topsoil: Yes No N/A
2. Lift thickness: 12 inches
3. Canpaction according to approved plan: Yes No N/A
4. Burning (specify extent and location): Yes No N/A
5. Angle of slope: 2:1 upstream, 2:1 downstream Total = 4 :1
6. `Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes No N~
At isolated points on embankment slopes: Yes N/A
At natural hillside: Yes No N/A
Over widespread areas: Yes No N/A
From downstream foundation area: Yes N 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. *Major 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
19. Existing embankment freeboard: _ (normal = 2.7') 2.7 feet
15. Increase Decrease in water level: no change feet
16. Cracks, bulging, or erosion on upstream face: Yes No N/A
17. Visible sumps or sinkholes in slurry surface: _ Yes No NL
18. `Clogging
Spillway channels and pipes: Yes No N/A
Decant system: Yes o NL
Diversion ditches: Yes No N/A
19. `Cracking or crushing of pipes
Spillway pipes: Yes No N/A
Decant system: Yes o NL
20. Trash racks clear and in place: Yes 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 space on the
back of this sheet.