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HYDRO20922
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Entry Properties
Last modified
8/24/2016 8:42:42 PM
Creation date
11/20/2007 1:54:43 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982057
IBM Index Class Name
Hydrology
Doc Date
7/15/2002
Doc Name
2nd Quarter 2002 Sedimentation Pond Inspections
From
Seneca Coal Company
To
DMG
Permit Index Doc Type
Sediment Pond Inspections
Media Type
D
Archive
No
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~ PERIODIC INSPECTION FORM <br />Water, Sediment, or Slurry Impou^~ndmen~cts <br />INSPECTOR'S NAME; Dennis Jones DATE: (' di ~'' y <br />NPDES I.D. NO.: CO -0000221 D.P. 005 <br />~_ 7 <br />~- ~ ` <br />FACILITY C ONFIGURATI ON: Cross-Valley Pond DATE LAST INSPECTI ON: ~ <br />SITE NAME: Pond #005 LOCATION: NWT/a SW`/a, Sec. 10, TSN, R88W <br />MINE NAME: Seneca II -W Mine (Seneca Coal Co) LOCATION: 8 mi. S of Hayden , CO <br />MINE I.D. NO.: CMLRD Permit No. C-82-057 OWNER'S REP.: Grea cx Kitchen , Gen Mar <br />Circle Or Write in appropriate reSDORSe <br />1. Foundation preparation (removal of vegetation, stumps, topsoil: Yes <br />2. Lift thickness: 12 in. <br />3. Compaction according to approved plan: Yes <br />4. Burning (specify extent and location): No <br />5. Angle of slope: 3.5:1 upstream, 2.5:1 downstream Total = 6:1 <br />6. *Seepage (specify location, color, and approximate volume) <br /> From underdrain pipes: Yes o N/A <br /> At isolated points on embankment slopes: Yes No N/A <br /> At natural hillside: Yes No N/A <br /> Over widespread areas: Yes No N/A <br /> From downstream foundation area: Yes No N/A <br /> "Boils" beneath stream or ponded water: Yes No N/A <br />7. Cracks or scarps on crest: Yes No N/A <br />8. Cracks or scarps on slope: Yes No N/A <br />9. Sloughing or bulging on slope: Yes No N/A <br />10. *Major erosion problems: Yes No N/A <br />11. Surface movements in valley bottom or on hillside: Yes No N/A <br />12. *Erosion of toe: Yes No N/A <br />13. *Water impounded against toe: Yes No N/A <br />14. Exi <br />s <br />ting embankment freeboard: (normal 7.4') ~~ feet <br />15. ~ <br />/ <br />V Increase Decrease in water level: See ~o~^+~e ~~s feet <br />16. Cracks, bulging, or erosion on upstream face: Yes ® N/A <br />17. Visible sumps or sinkholes in slurry surface: <br />18. *Clogging <br /> Spillway channels and pipes: Yes No N/A <br /> Decant system: Yes No N/A <br /> Diversion ditches: <br />19. *Cracking or crushing of pipes <br /> <br /> Spillway pipes; Yes No N/A <br /> Decant system: Yes No N/A <br />20. Trash racks clear and in place: Yes No N/A <br />*Major adverse changes in these items could cause instability and should be reported to the <br />Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted in <br />these items should normally be described (extent, location, volume, etc.) in the space on the <br />back of this sheet. <br />
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