_INSPECTION - C1981019 ‎(51)‎

• Permit No: C1981019
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• From: DRMS
• To: Colowyo Coal Company
• Inspection Date: 6/21/2011
• Email Name: JHB
• Media Type: D
• Archive: No

June 21,2011 C-1981-019/Colowyo Coal Mine JHB
The West Taylor Fill continues to be constructed. The underdrain construction is visible at the southern extent of
the West Taylor Fill.
The slopes on the west and north sides of the West Pit fill have mostly been completed. These slopes appear
stable and do not exhibit signs of slope failure or erosional gullies visible in the aerial photos. A powerline crosses
the north slope of the West Pit Fill.
Streeter fill remains stable and well vegetated. The Division is evaluating SL5 that includes final bond release of
reclaimed areas including Streeter Fill.
HYDROLOGIC BALANCE -Rule 4.05
❑Drainage Control 4.05.1,4.05.2,4.05.3; Siltation Structures 4.05.5,4.05.6; Diversions 4.05.4; Surface Water
Monitoring 4.05.13; Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18:
photo 2 shows what appears to be breaching of the South Taylor collection ditch on the SE portion of the ditch. It
does not appear that this resulted in significant gullying downslope of the collection ditch.
West Taylor pond was holding a pool of water, and appears to be discharging. There are npo ceoncerns with this
pond based upon the aerial photo.]
East Taylor pond is full of sediment. This pond will need to be cleaned this construction season. There appear to
be spoil springs forming along the drainage south of the East Taylor pond. (Photo DSC 3612) Repair to the gully
on the outslope of the East Taylor pond was visible.
The 2010 constructed stock tank on the eastern extent of the Gulch A drainage is holding water. There appears to
be significant down cutting of the drainage east of the Gulch A reconstructed drainage, in the portion that runs
through the undisturbed vegetation prior to reaching the pond. (photo DSC-3622) This is in the area that was
regraded in 2010.
Prospect pond was holding water and no problems were apparent with the pond,based on the aerial photo.
The West Pit pond is holding water but the bottom of the riser is visible,indicating that additional water storage is
available,and the pond is not discharging.
ROADS—Rule 4.03Drainage 4.03.1(4)/4.03.2(4)
❑Surfacing and Maintenance4.03.1(5)and(6)/4.03.2(5) and(6)
[]Reclamation 4.03.1(7)/4.03.2(7):
The West Taylor access road appears to have dried out and visually looks to be in good condition.
Roads throughout the mine site appear dry,no dust clouds appear to be stirred up with truck traffic. Watering of
the South Taylor Spoil dump road had recently occurred.
Number of Partial Inspection this Fiscal Year: 9
Number of Complete Inspections this Fiscal Year: 4
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