_INSPECTION - C1981019 ‎(47)‎

• Permit No: C1981019
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 6/15/2010
• Email Name: JRS
• Email Name: SB1
• Media Type: D
• Archive: No

Colowyo C-1981-019
15 June 10
Pg 2/12
Roads: - The main haul road/access road was dry at the time of the inspection. The
road is a paved road and is well maintained and in good condition. Colowyo is
currently only hauling coal to the Gossard Loadout at night so there was very little
traffic on the road.
- The South Taylor Haul Road was stable and well maintained at the time of the
inspection. There were no problems with fugitive dust at the time of the inspection as
Colowyo was actively watering the road. No erosional problems were noted on the
road. Now that the South Taylor Haul Road is complete, Colowyo must provide the
Division with a construction report and the road must be certified by a registered,
professional engineer, pursuant to Rule 4.03.1(1)(d)(1). This construction report and
haul road certification must be submitted in the form of a Technical Revision.
According to Colowyo they will be submitting a revision as Technical Revision 86 the
week of 21 June 2010. The haul road is partially an in-pit road (the portion that is
within the limits of the West Pit) and partially a haul road that must be designed and
certified pursuant to Rule 4.03.1 .
- The Sturgeon access road (to the Section 28 Pond) was dry and in good condition
and stable at the time of the inspection. The gravel on the road remains in place.
The Missouri crossings, at several locations along the length of the road, remain in
good condition and appear to be functioning as designed. The ditches along the
road'were all clear. There were no signs of erosion along the length of the road.
- The access road in Taylor Draw was wet and muddy in a few spots but it was stable
and in overall good condition at the time of the inspection. There was some minor
rutting on the road but this is not a problem at this time. The road was open the
entire way to the West Taylor Pond.
- With the construction of the South Taylor Haul Road the majority of Haul Road A has
been removed from use for the mining operations. Portions of this road remain open
for access to the north side of the final cut of the Section 16 Pit and the East Pit.
Colowyo has completed the work on widening and grading Haul Road A. This road
work was completed to allow the 103 dragline could walk to the top of the West Pit,
where it is now working.
The in-pit roads in the South Taylor Pit and the in-pit roads to the Section 16 dump
were all well maintained and stable at the time of the inspection. Colowyo was
actively watering these roads and there were no problems with fugitive dust. No
erosional problems were noted on any of these roads.
Hydrologic Balance: - The Streeter Pond (NPDES 001 A) was full (the water was
approximately 18" from the top of the riser) and discharging through the weep hole
at the time of the inspection. The discharge into Goodspring Creek looked clear.
There was no inflow from the ditch along the north side of the Streeter Fill. The pond
embankment was well vegetated and stable at the time of the inspection and no
erosional problems were noted. Several muskrats were seen in both the streeter
pond and in the area of Goodspring Creek where the pond discharges. In the past,
muskrats have blocked the weep holes of the highway ponds with sticks, causing
discharge problems. Colowyo will need to monitor these ponds for muskrat-related
problems. **See pictures at the end of this report.**