HYDRO25240

• Permit No: C1992081
• IBM Index Class Name: Hydrology
• Doc Date: 1/12/1995
• Doc Name: QUARTERLY SEDIMENTATION POND INSPECTIONS - HAYDEN GULCH LOADOUT
• From: PEABODY WESTERN 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: Michael G. Altavilla DATE: 12/30/99
NPDES I.D. NO.: COG-850008-OOlA
FACILITY CONFIGURATION: Embankment Pond DATE LAST INSPECTION: 09/23/94
SITE NAME: Truck Looo Pond 1 LOCATION: SES: SWS:. Sec. 19. T6N. R88W
MINE NAME: H-G Terminal. Inc. LOCATION: 2 mi. SE of Hayden. CO
MINE I.D. NO.: CMLRD Permit No. C-92-081 OWNER'S REP.: Scott Williams. Gen Mar
Circle or write in appropriate response
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Burning (specify extent and location):
Angle of slope: 2.75:1 upstream, 2:1 downstream Total
'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:
Cracks or scarps on crest:
Cracks or scarps on slope:
Sloughing or bulging on slope:
•Maj or erosion problems:
Surface movements in valley bottom or on hillside:
+Erosion of toe:
•Water impounded against toe:
Existing embankment freeboard: See comments
Increase _~ Decrease in water level: Approximately
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:
Yes No N/
= 9.75:1 N/A
Yes
Yes No
Yes o
Yes o
Yes
Yes o
Yes
Yes o
Yes o
Yes Q
Yes No
Yes
Yes o
12 feet
1 feet
Yes
Yes No
t YLSY
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
No N/A
Yes Qo N/A
Yes o N/A
Yes ® N/A
Yes ~ N/A
Yes No
+Maj or 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.