_INSPECTION - C1981019 ‎(22)‎

• Permit No: C1981019
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 9/16/2009
• Email Name: JRS
• Media Type: D
• Archive: No

III. COMMENTS - COMPLIANCE
Colowyo C-1981-019
16 Sept 2009
Pg 1/5
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 of the Colowyo Mine conducted by Jim Stark of CDRMS.
The inspection was conducted on 16 and 17 September 2009. Ryan Pawlowski of
CCC accompanied me on 16 September 2009 and Jennifer Sekulski-Barton of CCC
accompanied me on 17 September 2009. The mine was actively mining coal and
hauling coal to the loadout at the time of the inspection. The weather was warm
and overcast and the ground was wet/muddy (from rain the previous night) on 16
September 2009. The weather was warm and partly cloudy and the ground was
mostly dry on 17 September 2009. This inspection mainly focused on the reclamation
that Colowyo has completed in the East and West Pits. Data was gathered from
numerous locations (areas and points) with a Trimble GeoXT. This data is summarized
in the text below as well as in the attached maps and figures.
Roads: - Colowyo currently has a network of roads that have been built in the East Pit
to help facilitate reclamation (tramming of equipment, hauling topsoil, etc.). These
roads will all be pulled as their respective reclamation block is pulled. All of these
roads are considered in-pit roads for the purpose of permitting. The roads were all
well maintained and stable at the time of the inspection. The main road into the
area also has several water bars to help control runoff and erosion on the road.
Backfilling and Grading: - Colowyo has completed the backfilling and grading in the
2009 block of the East Pit (refer to Map 29 - Spoil Grading). This area is basically the
lower portion of the Prospect watershed area and all of the runoff from this
reclamation will flow to the Prospect Pond. This area was digitized by the Division as
being 34 acres. The actual reclamation block, as walked by the Division on 17
September 2009, was 31 .8 acres. The difference in areas (digitized vs. actual) is
negligible and probably based on digitizing areas. Based on aerial photos (taken on
17 September 2009) and the GPS data, it appears as though the entire 2009
reclamation block has been backfilled and graded. The reclaimed area ties-in very
nicely with the native (undisturbed) areas to the immediate east and flows well from
there. Although no actual slope measurements were taken on this inspection, the
reclaimed landform appears to fit nicely with what is shown on the post-mining
topography map, Map 19. The areas immediately above (west of) the reclamation
are spoil areas and the remaining final cut of the East Pit. These areas either drain to
a sump or the final cut of the East Pit, so no disturbed runoff should flow over the new
reclamation. These areas will be reclaimed in future years, as detailed on Map 29.
The approximate area for 2010 reclamation, as digitized by the Division, is 36 acres.
This area is west of the 2009 reclamation block and basically in the middle of the
block. *See pictures at the end of this report*