2008-05-30_HYDROLOGY - C1980005 ‎(2)‎

• Permit No: C1980005
• IBM Index Class Name: HYDROLOGY
• Doc Date: 5/30/2008
• Doc Name: 1st Quarter 2008 Sedimentation Pond
• From: Seneca Coal Company
• To: DRMS
• Permit Index Doc Type: Sediment Pond Inspect
• Email Name: DTM
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Dennis Jones DATE: 3 -;2 S - v
I.D. NO.: NI
NPDES D
Incised Pond DATE LAST INSPECTION: ' 0-
SITE 0 1
SITE NAME: Truck Wash Settling Pond LOCATION: NWV/ NEV/, Sec. 34, T6N, R87W
MINE NAME: Seneca II Mine (Seneca Coal Co) LOCATION: 7.1 mi. SE of Hayden, CO
MINE I.D. NO.: CDMG Permit No. C-80-005 OWNER'S REP.: Gregg Kitchen, Gen Mar
Circle or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil: - Yes
2. Lift thickness: N/A inches
3. Compaction according to approved plan: N/A
4. Burning (specify extent and location): N/A
5. Angle of slope: upstream, downstream Total = N/A
6. *Seepage (specify location, color, and approximate volume)
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
From underdrain pipes: N A
At isolated points on embankment slopes: N/A
At natural hillside: N/A
Over widespread areas: N/A
From downstream foundation area: N[A
"Boils" beneath stream or ponded water: Yes No
Cracks or scarps on crest: N/A
Cracks or scarps on slope: N/A
Sloughing or bulging on slope: N/A
*Major erosion problems: Yes V?
Surface movements in valley bottom or on hillside: N/A
*Erosion of toe: N/A
*Water impounded against toe: N/A
Existing embankment freeboard: (normal = 5.01) 90 feet
Increase i:?_, Decrease in water level: ;z•.5 feet
Cracks, bulging, or erosion on upstream face: N/A
Visible sumps or sinkholes in slurry surface: N/A
*Clogging
Spillway channels and pipes: Yes
Decant system: N/A
Diversion ditches: N/A
*Cracking or crushing of pipes
Spillway pipes: Yes
Decant system: N A
Trash racks clear and in lace:
Discharge rate (gpm) Qcc Q_' IQJ¢. L' 4. IOQ oo CS C,"g.,F
N/A
N/A
No N/A
No N/A
No 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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