HYDRO29260

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 7/30/2007
• Doc Name: 2nd Quarter 2007 Stockpond Inspections
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

Inspection Category
Comments (T-18
PERIODIC INSPECTION FORM
Stockponda or Sumps
INSPECTOR'S NAME: Roy Karo
FACILITY CONFIGURATION: Stockpond
SITE NAME: T-20
MINE NAME: Seneca II-W
MINE I.D. NO.: C-82-057
1
2
3.
9.
5.
6.
7.
8.
9.
10
11
12
13
14
~/~ ~/~
DATE:
DATE LAST INSPECTION:
LOCATION: NW'.NE'., Sec 15, TSN, R88W
LOCATION: 8 mi S of Hayden, CO
OWNER'S REP.: Gregg Kitchen Gen.Mgr.
Circle or write in appropriate response
Angle of slope: 3.9:1 upstream, 4.6:1 downstream
*Seepage (specify location, color, and approximate volume)
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on slope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Erosion of toe:
*Water impounded against downstream toe:
Existing embankment freeboard:
Increase Decrease in water level:
Cracks, bulging, or erosion on upstream face:
Spillway erosion:
*Clogging
Spillway channels:
Diversion ditches:
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
feet
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
feet

Yes Flo N/A
t
Yes No
~ N/A
r
I
Yes No; N/A
Yes 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.
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Total = 8.5:1 N/A