HYDRO22736

• Permit No: C1992081
• IBM Index Class Name: Hydrology
• Doc Date: 4/12/1998
• Doc Name: QUARTERLY SEDIMENTATION POND INSPECTIONS HAYDEN GULCH LOADOUT
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

i
PERIODIC INSPECTION FORM
Water, Sediment, or Slurry Impoundments
INSPECTOR'S NAME: Michael Altavilla DATE: 03/11/96
NPDES I.D. NO.: COG-650008-002A
FACILITY CONFIGURATION: Embankment Pond DATE LAST INSPECTION: _12/04/95
SITE NAME: Rail Loon Pond 2 LOCATION: SES: SW3:. Sec. 14, T6N. R88W
MINE NAME: H-G Terminal. Inc. LOCATION: 2 mi. SE of H ayden. CO
MINE I.D. NO.: CMLRD Permit No. C-92-081 OWNER'S REP.: Hrad Brown, Gen Mar
Circle or write in appropriate response
1. Burning (specify extent and location):
2. Angle of slope: 3.75:1 upstream, 2:1 downstream Total =
3. *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 stream or ponded water:
4. Cracks or scarps on crest:
5. Cracks or scarps on slope:
6. Sloughing or bulging on slope:
7. *Major erosion problems:
8. Surface movements in valley bottom or on hillside:
9. +Erosion of toe:
10. *Water impounded against toe:
11. Existing embankment freeboard: See comments
12. X Increase Decrease in water level: Approximately
13. Cracks, bulging, or erosion or. upstream face:
14. Visible sumps or sinkholes in slurry surface:
15. +Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
16. *Crackinq or crushing of pipes
Spillway pipes:
Decant system:
17. Trash racks clear and in place:
Yes No /A
5.75:1 N/A
Yes
Yes
Yes
Yes
Yes
Yes ~
Yea ~~~v]!Y9!~'/`
Yes
Yes
Yes
Yes
Yes
Yes
0.6 feet
4.4 feet
Yes
Yes No
N/A
/A
Yes ~ N/A
Yes o
Yes
Yes No /d~A~
Yes No RAJ
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.