HYDRO22536

• Permit No: C1980005
• IBM Index Class Name: Hydrology
• Doc Date: 4/25/1994
• Doc Name: 1st Qtr 1994 Inspections
• From: PEABODY WESTERN
• 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: Dennis Jones DATE: 03/22/94
NPDES I.D. NO.: CO-0000221 D.P. 004
FACILITY CONFIGURATION: Cross-Valley Pond DATE LAST INSPECTION: 12/07/93
SITE NAME: South Section 12 Pond #004 LOCATION: SW~ SE ;, Sec. 12, T6N, R87W
MINE NAME: Seneca II Mine (Peabody Coal Co.l LOCATION: 7.1 mi. S of Hayden, CO
MINE I.D. NO.: CMLRD Permit No. C-005-80 OWNER'S REP.: Scott Williams. Supt.
Circle Or write in appropriate response
1. Foundation preparation (removal of vegetation, stumps, topsoil: _ i`e~ No N/A
2. Lift thickness: 12 in. N/A
3. Compaction according to approved plan: Y~e~.~ No N/A
4. Burning (specify extent and location): Yes No LN1A
5. Angle of slope: 5.1 upstream, 2.1 downstream Total = 7.1 N/A
6. *Seepage (specify location, color, and approximate volume)
From underdrain pipes: Yes; No N/A
At isolated points on embankment slopes: Yes ~v N/A
At natural hillside: Yes `I1.p) N/A
Over widespread areas: Yes CDIg N/A
From downstream foundation area: 1~'e s, No N/A
"Boils" beneath stream or ponded water: Yes No' N/A
7. Cracks or scarps on crest: Yes ~~ N/A
8. Cracks or scarps on slope: Yes ~ N/A
9. Sloughing or bulging on slope: Yes No N/A
10. *Major erosion problems: Yes ~'o~ N/A
11. Surface movements in valley bottom or on hillside: Yes ~ N/A
12. *Erosion of toe: Yes ~ N/A
13. *Water impounded against toe: Yes No N/A
14. Existing embankment freeboard: 5.6 feet
15. x Increase Decrease in water level: 1 feet
16. Cracks, bulging, or erosion on upstream face: Yes ~I12 N/A
17. Visible sumps or sinkholes in slurry surface: Yes No rA~~
18. *Clogging
Spillway channels and pipes: Yes :tin N/A
Decant system: Yes CIJ56~ N/A
Diversion ditches: Yes ~`Jq% N/A
19. *Cracking or crushing of pipes
Spillway pipes: Yes Jo ,; N/A
Decant system: Yes Q~1~~ N/A
20. Trash racks clear and in place: ~~ 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.