_INSPECTION - C1981019 ‎(44)‎

• Permit No: C1981019
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 5/27/2009
• Email Name: JRS
• Media Type: D
• Archive: No

Colowyo C-1981-019
27 May 2009
Pg 5/7
- Sump 4 contained water approximately six inches below the top and was not
discharging at the time of the inspection. The sump was stable at the time of the
inspection.
- Sump 5 contained water to the top of the sump but did not appear to be
discharging at the time of the inspection. The sump appeared to be stable at the
time of the inspection. The area around the sump was very muddy.
- These sumps are best management practices that catch disturbed runoff from the
haul road to the Gossard Loadout. They are inspected and cleaned/maintained
regularly by Colowyo staff.
- The ditch along the access road in Taylor Draw was full of sediment from basically
the entry (at sump 2) to Sump 5. This ditch will need to be cleaned.
- The roadside ditches along the paved access and haul road were all clean at the
time of the inspection. There were no erosional problems noted in any of these
ditches.
- The outlet of Culvert P at the loadout has been crushed. While flow from this culvert
has not been completely stopped it has been greatly reduced. The culvert is an 18"
culvert and it must maintain a 12" diameter for flow. It was not clear whether it was
smaller than this but it needs to be fixed regardless.
Backfilling and Grading: - Colowyo has recently submitted two technical revisions to
address reclamation in the East and West Pits. The first revision was TR-79. This was a
new backfilling schedule for the West Pit. The Division proposed a decision to
approve this revision on 22 April 2009. The second revision was TR-80, which
addressed the backfilling schedule in the East Pit. This revision is still under
consideration by the Division.
- Colowyo has been intermittently performing reclamation work with the 101 dragline
on the highwall of the East Pit (The 101 was operating on 27 May 2009 and appears
to have moved a few hundred feet from its position of a month ago. The 101 is
pulling material from the highwall and throwing it into the pit. This operation is taking
place on the western-most portion of the final cut of the East Pit.
- The operator is performing backfilling operations in the northwest corner of Section 4
area of the West Pit. On previous inspections the operator was moving spoil with a
truck/loader operation from a stockpile to an area just above the East Taylor Pond.
A small portion of this area, on the East side, appears to be close to grade. Colowyo
has now moved the 102 dragline out of sequence in the active West Pit and has it in
this area performing reclamation. The 102 is pulling stockpiled spoil materials and
placing them in the pit area where highwall mining occurred a few years ago. The
plan is to continue using the 102 when it is out of sequence to perform reclamation in
this area. Colowyo is hoping to get the area from the East Taylor Pond up to an area
that has been blocked off, just behind the active pit, regraded by August. The
Division would like to remind Colowyo that these areas that are brought to final grade
this year will need to have the topsoil replaced and reseeded this fall.