_INSPECTION - C1983058 ‎(7)‎

• Permit No: C1983058
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 6/24/2008
• Email Name: JRS
• 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.
Twin Pine C-1983-058
24 June 2008
Pg 1/2
This was a partial inspection of the Twin Pines Mine conducted by Jim Stark of CDMG.
The inspection was conducted on the afternoon/evening of 24 June 2008 and the
morning of 25 June 2008. This was an inspection of the Tipple/Coal Sales area for the
express purpose of determining whether or not any open wells remained at the site.
This is a revoked site. The bond for this site was forfeited after reclamation was
completed. The weather was hot and sunny and the ground was dry.
Signs and Markers: - There is still a mine ID sign up at the entrance to the Tipple/Coal
Sales area, albeit in very bad shape. There is not a sign identifying the site as a
CDRMS reclamation site.
Roads: - The road to the site is a county road. On this inspection the existing drill hole
road above the area was walked (see attached GPS map). This road is covered with
vegetation and is only visible because the road bed was not reclaimed. The road
was in good shape and appeared to be stable. There were no erosional problems
noted on the drill hole road.
Hydrologic Balance: - The sediment pond at the Tipple/Coal Sales area was dry at
the time of the inspection. The embankment was well vegetated and appeared
stable. No erosional problems were noted on the pond embankment.
- The area in and surrounding the Tipple/Coal Sales area was walked in an attempt
to find any remaining drill holes or wells. There were four markers that were found but
there was no indication on the markers what the holes were (see attached GPS
map). In addition to these four markers, there is one remaining casing at the back of
the disturbed area. The casing is six-inches in diameter and extends approximately
six-feet above the regraded ground level. The top of the casing is welded shut.
Based on the positioning of the drill hole road relative to this casing, it is, in all
likelihood, not a well. It may be a vent pipe for an opening into the old workings.
- With regards to the possibility of remaining wells at the site that need to be sealed, I
think that it is highly unlikely that any exist. The 'Y' labeled "Fence Post Marker"
roughly correlates with the position of the TPW-1 monitoring well at the site. The
sealed 6" casing roughly correlates with the conveyor entry that was at the
Tipple/Coal Sales area. The other three sealed well markers roughly correlate with
drill holes that were either drilled at the site or proposed. I do not think that any
further action regarding wells needs to be taken at the Twin Pines Mine.
Backfilling and Grading: - The backfilled and regraded Tipple/Coal Sales area
remains stable. No erosional problems were noted on the site. The highwall that
remains along the back edge of the site also remains stable.