HYDRO30825

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/29/2001
• Doc Name: 3rd Qtr 2001 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
n Water, Sediment, or Slurry Imyoundments
INSPECTOR' S NAME: /JE~n v..S ~ o he.5 DATE: ' G ~ O I
NPDES I.D. NO.: NLA
FACILITY CONFIGURATION: Final Pit Impoundment DATE LAST INSPECTION: 6~~ ~ - ~~
SITE NAME: PeCoCo Reservoir LOCATION: SW'1. NWS~., Sec. 2, TSN. R87W
MINE NAME: yeneca ZI Mine (Seneca Coal Col LOCATION: 7.1 mi. SE of Hayden. CO
MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Greaa Kitchen Gen Mar
Circle or write in acorooriate reaconse
1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes No
2. Lift thickness: inches
3. Compaction according to approved plan: Yes No
4. Burning (specify extent and location): Yes No
5. Angle of slope (degrees) degrees
6. *Seepage (specify location, color, and approximate volume)
7
8
9
10
11
12
13
14
15
16
17
18
19
20
From underdrain pipes:
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 toe:
Existing embankment freeboard: (normal = 6.1'I
Increase Decrease in water level: VLo ~ -
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface:
*Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
*Cracking or crushing of pipes
Spillway pipes:
Decant system:
Trash racks clear and in place:
NL
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

Yes
Yes
NL
Yes
NL
No
No
No
No
No
No
No
No
No
No
No
feet
feet
~°

*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.