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
FACILITY CONFIGURATION: Stockpond
SITE NAME: T -2
MINE NAME: Seneca II -W
MINE I.D. NO.: C -82 -057
14. *Clogging
Spillway channels:
Diversion ditches:
PERIODIC INSPECTION FORM
Stockponds or Sumps
Circle or write in appropriate response
DATE: _5- ( - 7- (
DATE LAST INSPECTION:
LOCATION: NWl %SW' %, Sec
LOCATION: 8 mi S
OWNER'S REP.: Dennis
Yes
Yes
3-3o -1Z
22, T5N, R88W
of Hayden, CO
Jones, Manager
1. Angle of slope: 3.3:1 upstream, 2.3:1 downstream Total = 5.6:1 N/A
2. *Seepage (specify location, color, and approximate volume)
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 o N/A
"Boils" beneath stream or ponded water: Yes o 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 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: , \ k feet
12. Cracks, bulging, or erosion on upstream face: Yes X0 N/A
13. Spillway erosion: Yes No N/A
No
No
Comments: II
N/A
N/A
*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.