HYDRO27434

• Permit No: C1994082
• IBM Index Class Name: Hydrology
• Doc Date: 11/30/1999
• Doc Name: 3rd Qtr 1999 Sediment Pond Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: M; ha 1 Al avilla DATE: 09/22/99
NPDES I.D. NO.: _-CO-0000221 ^. P. O l0
FACILITY CONFIGURATION: ('rose-Va11_g y Pond DATE LAST INSPECTION: 06/30/99
SITE NAME: Pond MO10 LOCATION: NWk NFk cec_ 8. T5N R87W
MINE NAME: voaet Mine(S .+ -a -oa - off LOCATION: 8.K mi_ _cE of Hayden, CO
MINE I.D. NO.: C T.Rn p m+ No_ --4 4-08 OWNER'S REP.: Brad Brown, Cen Mqr
1
2
3
4
5
6
Foundation preparation (removal of vegetation, stumps, topsoil:
Lift thickness:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of slope: 3.75:1 upstream, 3.75:1 downstream
*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:
"Boils" beneath etream~or ponded water:
7.
8.
9.
10
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on elope:
*Major erosion problems:
11. Surface movements in valley bottom or on hillside:
12. *Eroeion of toe:
13.
14.
15.
16.
17.
1B.
19
20
*Water impounded against toe:
Existing embankment freeboard: Annro:imately
Increase Decrease in water level: No chapge
Cracks, bulging, or erosion on upstream face:
Visible eumpa 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:
Yes
Yea Q
Yee
Yes
Yea
Yes ~~~
Yee
Yes No
Yes
Yes
Yee "U
Yes
Yee o
10.0 feet
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
N/A
N/A
N/A
feet
Yes ~ N A
Yes No
Yea ~IOI N A
Yea o
Yes s
No N
Yee ©o
Yee No
Yes No
*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.
es No
~_ in.
_ Yea No
Yee No
Total = 7.S•1