INSPEC04202

• Permit No: C1982056
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• Inspection Date: 12/12/2002
• 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 Tom Kaldenbach of the Colorado
Division of Minerals and Geology. Sandra White represented the operator.
With the operator's consent, this report was issued from the Denver office.
The ground was covered with less than one foot of snow, which limited
inspection.
The longwall was active in panel 14 Right.
Availability of Records
The need to submit copies of the following items to the Division was
discussed during the inspection:
1. As-built certifications for the northwest vent shaft access
road and the batch-weigh haul road;
2. First-half 2002 subsidence report;
3. Pond inspection reports for 2nd and 3rd quarters 2002;
4. Updated ownership and control information for permit renewal
RN-04.
The operator has copies of all of these items available in the mine
office. During the inspection, the operator's representative provided
the inspector with a copy of the subsidence report (which was about to
be mailed), and explained that the ownership and control information
was sent to the Division a few weeks earlier (the inspector will check
to see if the submittal was received). The as-built certifications
and pond inspection reports will be mailed to the Division.
Hydrologic Balance
Brian Watterson of Twentymile Coal Company described a suspected
exceedance of the instream sulfate limitation that occurred at monitoring
site 1005 on Trout Creek. Preliminary information is shown on the
accompanying map. The exceedance occurred earlier in the week of the
inspection, a few days after pumping had stopped at the Fish Creek
borehole. Pumping at the Fish Creek borehole could have contributed to
(or increased) such an exceedance, although the situation is complicated
by a lag between the time pumping ceased and the time the exceedance was
detected. Also, there is a probable significant inflow of sulfate into
Trout Creek upstream at the Edna Mine. The material damage suspect level
of 1000 micromhos/cm was not exceeded at site 1005. Once Twentymile's
analytical results are received from the lab, parameter values at the
monitoring sites can be evaluated for compliance. Mine pumping from the
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