2011-07-28_HYDROLOGY - C1982057

• Permit No: C1982057
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/28/2011
• Doc Name: 2nd Quarter 2011 Sedimentation Pond 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
NPDES I.D. NO.: N/A
FACILITY CONFIGURATION: Cross - Valley Pond
SITE NAME: Pond #016A
MINE NAME: Seneca II -W Mine (Seneca Coal Co)
MINE I.D. NO.: CMLRD Permit No. C -82 -057
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
DATE: 6'p� G 1 it
Circle or write in appropriate response
DATE LAST INSPECTION: 3 l 4
LOCATION: NE'% SE' %, Sec. 27, T5N, R88W
LOCATION: 8 mi. S of Hayden, CO
OWNER'S REP.: Roy Karo, Gen Mgr
1. Foundation preparation (removal of vegetation, stumps, topsoil:
2. Lift thickness:
3. Compaction according to approved plan:
4. Burning (specify extent and location): No
5. Angle of slope: 3:1 upstream, 3:1 downstream Total = 6:1
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes:
At isolated points on embankment slopes:
At natural hillside:
Over widespread areas:
From downstream foundation area: JiftP o46". 5 it -
"Boils" beneath stream or ponded water:
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on slope:
*Major erosion problems: SeE- I.e k i3
Surface movements in valley bottom or on hillside: see 4 2
*Erosion of toe: 6elJt)
Yes
in.
N/A
Yes • N/A
Yes • N/A
Yes • N/A
C2215 No N/A
Yes (Nod N/A
Yes No N/A
Yes No N/A
Yes No N/A
N/A
No N/A
Yes No N/A
Yes No N/A
I j.'( feet
G feet
No N/A
N/A
*Water impounded against toe:
Existing embankment eeboard: (normal = 5.4', 2008)
Increase Decrease in water level:
Cracks, bulging, or erosion on upstream face: Sew to.4b* )
Visible sumps or sinkholes in slurry surface:
*Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
19. *Cracking or crushing of pipes
Spillway pipes: S ee- l c..- tot.%) Q -, No N/A
Decant system: N/A
20. Trash racks clear and in place: Yes N/A
21. Discharge rate (gpm) App MO-140
*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. f
T�. 1 s �-9 \ J eck
Cf s s L q- a t ,O/l Po ` S to g.,., C . v' 1,.� r � ) � � u e 4-
l b JJ
1 ,0 (Iv ke w o ce V 0 (A... 143 ct-sLac..0 cA Lo
62 _ - S 1 1 4 v.v V-ecr viet 4"
( cZti ii.e
p
Yes No N/A
N/A
N/A