HYDRO28130

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 12/6/1999
• Doc Name: 3rd Qtr 1999 Inspections
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INSPECTION FORM
Stockponds or Sumps
INSPECTOR'S NAME: Michas A7 av'lla
FACILITY CONFIGURATION: Stoc nand
SITE NAME: T-13
MINE NAME: Seneca 77
MINE I.D. NO.: C-80-005
DATE: 09/j 4/99
DATE LAST INSPECTION: 06/29/99
LOCATION: Nw5~~4 c _ i TS ~" R87W
LOCATION: 7.1 mi SE of Hayden. CO
OWNER'S REP.: Rrad Rrown, Gen Mqr
1. Angle of elope: 3:1 upstream, 3:1 downstream Total = 6:1 N/A
2. *seepage (specify location, color, and approximate volume)
At isolated points on embankment elopes: Yes ~ N/A
At natural hillside: Yes ~ N/A
Over widespread areas: Yee No N/A
From downstream foundation area: Yes ©o N/A
"Boils" beneath stream or ponded water: Yee ® N/A
3. Cracks or scarps on crest: Yes /~o~
~~ N/A
4. Cracks or scarps on elope: Yee ® N/A
5. Sloughing or bulging on elope: Yes ® N/A
6. *Major erosion problems: Yes N/A
7. Surface movements in valley bottom or on hillside: Yes ~ N/A
B. *Eroeion of toe: Yes ~ N/A
9. *Water impounded against downstream toe: Yes ® N/A
10. Existing embankment freeboard: Aooroximatell( ~_ feet
11. Increase Decrease in water level: Nn changE feet
12. Cracks, bulging, or erosion on upstream face: Yee ~ N/A
13. Spillway erosion: Yes ® N/A
14. *Clogging

Spillway channels: Yes ~ N/A
Diversion ditches: Yee o 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 apace on the back of this sheet.