HYDRO25950

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 10/4/1993
• Doc Name: 3rd Qtr 1993 Inspections
• From: PEABODY WESTERN
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION PORM
Water, Sediment, or blurry Impoundments
INSPECTOR'S NAME: Tom Wainwright DATE: 09/21/93
NPDES I.D. NO.: CO-0000221 D.P. 003
FACILITY CONFIGURATION: Diked Pond DATE LAST INSPECTION: OE~ 10 93
SITE NAME: Northwest Imaoundment #003 LOCATION: SE4 SW~, Sec. 27, T6N, R87W
MINE NAME: Seneca Mine (Peabody Coal Col LOCATION: 7.1 mi. SE of H~avden, CO
MINE I.D. NO.: CMLRD Permit No. C-005-80 OWNER'S REP.: Scott Williams, Suot.
Circle or write lII aoorooriate reBOOase
1. Foundation preparation (removal of vegetation, stumps, topsoil: ee No
2. Lift thickness: 12 in.
3. compaction according to approved plan: ~ No
4. Burning (specify extent and location): Yee
5. Angle of elope: 2:1 upstream, 3:1 downstream Total = 5:1
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yee No
At isolated points on embankment elopes: Yee
At natural hillside: Yee
Over widespread areas: Yee Qo
From downstream foundation area: Yes
"Boils" beneath stream or ponded water: Yes
7.
B.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19
20
Cracks or scarps on crest:
Cracks or scarps on elope:
Sloughing or bulging on elope:
*Major erosion problems:
Surface movements in valley bottom or on hillside:
*Eroeion of toe:
*Water impounded against toe:
Existing embankment freeboard:
Increase X Decrease in water level:
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 eyatem:
Trash racks clear and in place:
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Yee ® N/A
Yea ® N/A
Yee ~ N/A
Yee ~ N/A
Yes ® N/A
Yee ~ N/A
Yee ~ N/A
4.8 feet
0.1 feet
Yee ®° N/A
Yea No
Yee ~ N/A
Yee No
Yee ~ N A
Yee ® N/A
Yee No
ee 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.