2012-08-30_HYDROLOGY - C1982057

• Permit No: C1982057
• IBM Index Class Name: HYDROLOGY
• Doc Date: 8/30/2012
• Doc Name: 2nd Quarter 2012 Stockpond Inspection Report
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: SLB
• Email Name: SB1
• Media Type: D
• Archive: No

INSPECTOR'S NAME: Dennis Jones DATE: vc -( I - 1 2_
FACILITY CONFIGURATION: Stockpond DATE LAST INSPECTION: 3-36
SITE NAME: T -24 LOCATION: SW /,, Sec 9, TEN, R88W
MINE NAME: Seneca II -W LOCATION: 8 mi S of Hayden, CO
MINE I.D. NO.: C -82 -057 OWNER'S REP.: Dennis Jones, Manager
1. Angle of slope: 3.9:1 upstream, 4.6:1 downstream Total = 8.5:1 N/A
2. *Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes: Yes o 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 io N/A
3. Cracks or scarps on crest: Yes o N/A
4. Cracks or scarps on slope: Yes o N/A
5. Sloughing or bulging on slope: Yes o N/A
6. *Major erosion problems: Yes o N/A
7. Surface movements in valley bottom or on hillside: Yes No N/A
8. *Erosion of toe: Yes No N/A
9. *Water impounded against downstream toe: Yes N/A
10. Existing embankment freeboard: feet
11. Increase Decrease in water level: ii, I\ feet
12. Cracks, bulging, or erosion on upstream face: Yes o N/A
13. Spillway erosion: Yes No N/A
14. *Clogging
Spillway channels:
Diversion ditches:
*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.
Comments:
PERIODIC INSPECTION FORM
Stockponds or Sumps
Circle or write in appropriate response
Yes No N/A
Yes No N/A