2014-04-03_HYDROLOGY - C1982057

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 4/3/2014
• Doc Name: 1st Quarter 2014 Sedimentation Inspection Reports ‎(emailed)‎
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspections
• Email Name: JHB
• Email Name: DIH
• Media Type: D
• Archive: No

PERIODIC
INSPECTION FORM
Water, Sediment,
or Slurry Impoundments
INSPECTOR'S NAME: Chris Miller
DATE:
NPDES I.D. NO.: CO- 0000221 D.P. 016
_3/20/14
FACILITY CONFIGURATION: Cross- Valley Pond
DATE LAST INSPECTION:
11/7/13
SITE NAME: Pond #016
LOCATION: NEU SEY4, Sec.
27,
TSN, R88W
MINE NAME: Seneca II -W Mine (Seneca Coal Cc)
LOCATION: 8 mi. S of Hayden,
CO
MINE I.D. NO.: CMLRD Permit No. C -82 -057
OWNER'S REP.: Roy Karo,
Gen
Mqr
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
Circle or write in appropriate response
Foundation preparation (removal of vegetation, stumps, topsoil:
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of slope: 3:1 upstream, 3:1 downstream Total =
*Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment slopes:
At natural hillside: see below
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 toe:
Existing embankment freeboard:
Increase Decrease
Cracks, bulging, or erosion on
Visible sumps or sinkholes in
*Clogging
Spillway channels
Decant system: _
Diversion ditches:
*Cracking or crushing of
Spillway pipes:
Decant system:
Trash racks clear and in
Discharge rate (gpm)
see below
(normal = 6.81)
in water level: no change
upstream face:
slurry surface:
and pipes:
pipes
place:
Yes
12
Yes
No
6.1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
6.8
0
Yes
in.
No
No
No
No
No
No
No
No
No
No
No
No
No
feet
feet
No
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Yes No N/A
N/A
Yes No N/A
Yes No N/A
20.6
*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.