_INSPECTION - C1982056 ‎(59)‎

• Permit No: C1982056
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 8/27/2008
• Email Name: JHB
• Media Type: D
• Archive: No

III. COMMENTS -COMPLIANCE
Below are comments on the inspection. The comments include discussion of observations made during
the inspection. Comments also describe any enforcement actions taken during the inspection and the
facts or evidence supporting the enforcement action.
This was a partial inspection conducted by Janet Binns of Colorado Division of Reclamation, Mining
and Safety. Mr. Joe Shoemaker of Twentymile Coal Company accompanied the inspection. The mine is
an active underground mine. The weather was hot and windy, and the mine site was dry. The mine is
temporarily not producing coal due to hydrologic concerns in the mine.
Roads: Roads throughout the mine were dry and well graded. 6MN access road remains in good
condition. Roadside ditches are getting regraded and haulroad SAE's cleaned of sediment.
The hydraulic oil spill on the 6MN pad near the pump house is mostly cleaned up. The berm downslope
of the hydraulic oil spill remains intact. TCC continues to clean the leak from the compressor building.
TCC has received approval to dispose of contaminated soil material at the landfill outside of Milner.
(The Division has not seen documentation on this approval.) TCC is in the process of dismantling this
temporary compressor house, decommissioning the leaking compressor and replacing the equipment.
Hydraulic oil does not reach the 6MN pond, though TCC continues to place absorbent napkins and
booms in the inlet of the 6MN pond. Water level in the 6MN pond had receded and water level is well
below the discharge elevation.
Support Facilities: The Division proposed to approve the revision to the Stoker loading area, TR 65, on
8/22/2008. No truck loading was occurring during the time of this inspection.
Hydrologic Balance:
TCC is currently not extracting coal due to concerns about underground water elevation up against seals
with in the mine. Extraction has been halted since 8/25. TCC has contacted the Division regarding
discharge from the Fish Creek Borehole. TCC has concerns that discharge would exceed the 1500 ppm
TDS at site 115 (Fish Creek Borehole). TCC consulted with Division hydrologist, Kent Gorham, and
Coal Program supervisor regarding exception for this discharge. DRMS requires that standards are met
at downstream site 1005, TCC conducts increased water monitoring, and provide a revision to the permit
to DRMS. The inspector collected a water sample at site 1005 at 11:30 am 8/28/2008 for confirmation
of EC and sulfate values.
TCC is considering long-term management of underground water. TCC is currently pumping to Pit 1.
Pit 1 elevation has 10 feet approx elevation prior to flowing to Pond D. Pond D was not discharging
during this inspection.
Ponds throughout the mine site were holding water,though few of the ponds were discharging. TCC is
working with the CDPH&E to permit pond 6MN with an outfall point. This change to the pond
configuration will also need to be permitted with DRMS.
Most of the ditches through out the mine site were in good condition. TCC has been working on
maintenance of ditches in the mine area. Haul road C ditch has received additional sediment since the
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