_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 8/12
- Colowyo's backfilling and grading plan is shown on Map 29 - Spoil Grading South
Area (revised with Technical Revision 80, which was approved on 16 June 2009).
Colowyo has stated that they have completed approximately 130 acres of
backfilling and grading in the West Pit so far in 2010 that will have the topsoil
replaced and be reseeded. Of these 130 acres, 35.6 acres were regraded in 2007
(and were not topsoiled or seeded since they were an "island" within the
disturbance) and 4A acres were regraded in 2009 but were not topsoiled or seeded
(due to their proximity to active work on the South Taylor Haul Road. This means that
Colowyo has backfilled and regraded approximately 90 acres in the West Pit this
year. Colowyo is reminded that all of the 2012 areas shown on Map 29 - Spoil
Grading-South Area, must be completed (backfilled and regraded, topsoiled and
reseeded) by the end of 2012 (approximately 676 acres). To date Colowyo has
completed 51.3 acres of B&G in the West Pit, with approximately 90 acres of B&G
completed in 2010 and approximately 4.4 acres completed last year (but not
topsoiled or seeded, as described above). Based on those acreages, Colowyo will
have approximately 146 acres of B&G completed in the West Pit and approximately
530 acres of B&G remaining to be completed in the West Pit prior to the end of 2012.
With the planned approximately 250 acres in 2011 and 2012, Colowyo will complete
approximately 396 acres of B&G by 2012. This will leave Colowyo approximately 280
acres short of their B&G plan, as shown on approved Map 29. As the Division has
discussed with Colowyo, in general the Division is allowing Colowyo the flexibility to
complete their backfilling and grading where it best fits into their mining sequence
(which is why the Division has allowed blocks of years for reclamation vs. single
years, as shown on Map 29). The part of the plan that is NOT flexible is the required
number of acres of total B&G that is to be completed in the West Pit prior to (the end
of) 2012, which is 675.8 acres.
- Colowyo is reminded that the backfilled acres that were completed in the West Pit
in 2007 (35.6 acres) and last year (4.4 acres that were not topsoiled or seeded, as
described above) should not be included on the 2010 Annual Reclamation Report
Form since they were included on previous forms. The addition of these acreages will
throw the numbers off.
- There are two additional areas of reclamation that Colowyo is doing in 2010 that
are not included in the 2009-2012 areas. The first area is approximately 9 acres where
the old R3 coal stockpile was (behind the facilities area). Colowyo has end dumped
the material in the area and now needs to grade it to final contour. The second area
is a wedge area of approximately 17 acres that buts up against the East Pit in the
location of Haul Road A.
- The West Pit area that was backfilled, graded, topsoiled and seeded in 2009 was
dry at the time of the inspection. Colowyo has repaired the majority of the rills that
formed in the area during the spring runoff. These rills were fixed by hand and the
areas were reseeded. A few minor rills remain that will need to be fixed. These
remaining rills are generally less than four inches deep. There was no cracking or
settling of the reclamation seen at the time of the inspection. Overall, the 2009 West
Pit reclamation looks very good. **See pictures at the end of this report.**