_INSPECTION - C1981017 ‎(9)‎

• Permit No: C1981017
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• From: DRMS
• To: Mid Continent Resources
• Inspection Date: 11/8/2010
• Media Type: D
• Archive: No

November 8,2010 C-1981-017/Coal Basin Mines SGR
Inspection Topic Summary
NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable
N -Air Resource Protection R -Roads
N -Availability of Records N -Reclamation Success
N -Backfill&Grading N -Revegetation
N -Excess Spoil and Dev. Waste N - Subsidence
N -Explosives N - Slides and Other Damage
N -Fish&Wildlife R -Support Facilities On-site
R -Hydrologic Balance N -Signs and Markers
N -Gen. Compliance With Mine Plan N - Support Facilities Not On-site
N -Other N - Special Categories Of Mining
R -Processing Waste N -Topsoil
COMMENTS
HYDROLOGIC BALANCE -Rule 4.05❑El Drainage Control 4.05.1, 4.05.2,4.05.3; Siltation Structures 4.05.5,
4.05.6; Discharge Structures 4.05.7,4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water
Monitoring 4.05.13; Surface Water Monitoring 4.05.13; Drainage—Acid and Toxic Materials 4.05.8;
Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18:
The Dutch Creek Diversion was evaluated. Generally,the channel is working as designed, in that the
inner channel migrates within the larger outer channel. The inner channel has migrated toward the east near the
low water crossing located about 200 yards upstream of the confluence with Coal Creek. This is causing erosion
of the inside east bank of the outer channel. No remedial action is proposed as the system is extremely dynamic,
and it is just as likely that repair work would cause damage to other areas of the stream system, as it adjusts to
whatever remedy was implemented. Evidence of a large, summer flow event was apparent within the channel.
Large amounts of organic debris have accumulated in many areas,and gravel bars have been deposited at some
meanders, with scouring evident at other points within the channel.
PROCESSING WASTE/COAL MINE WASTE PILES—Rule 4.10 and 4.11❑[I Drainage Control; Surface
Stabilization;Placement:
Evaluated Bear Creek and Huntsman(Old Refuse Pile)Project Areas. The entirety of the Old Refuse Pile
has been grazed this past summer. Growth was substantial at both Project areas,but all plants were heavily
grazed; no seed heads observed. Minimal erosion was observed at the Huntsman Project Area, generally near the
toe of the area. Bear Creek Project Area appears to be more erosion resistant; presumably as a result of the
differing ground scarification processes employed at that site.
The Sutey Pile was inspected. Ditch 8, which was partially reconstructed in 2008,was observed. The channel is
functioning as designed in some reaches,but is incised in others. The large boulder check dams that were keyed
into the base of the channel during the reconstruction appear to have mitigated large scale head cutting.
Additional work may be conducted at Ditch 8 during the summer of 2011. Revegetation success at the Sutey
appears to have reached its maximum potential in terms of cover and diversity. The area is still grazed in the
Number of Partial Inspection this Fiscal Year: 0
Number of Complete Inspections this Fiscal Year: 1
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