_INSPECTION - C1992080 (3) - Laserfiche WebLink

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November 18, 2013 C-1992-080/Carbon Junction Mine MLT berm was in place. The operator took care to build in some variability to the slope, which will result in a more natural appearance when the slope is vegetated. • Riprap was delivered to the site and used to line the un-named tributary as approved. Rock was also placed to stabilize the channel where the upstream end of the berm was removed in 2012. • The graded slopes were tracked by the bulldozer to stabilize and roughen them prior to seeding. • The channel bottom was subjected to some compaction by the construction equipment, so the contractor scarified the channel bottom using the teeth of the excavator bucket as he backed down the channel once the work had been completed. • The final work element was the construction of a riprapped berm to deflect flow from the upper channel into the permanent diversion. ROADS—Rule 4.03 Construction 4.031(3) /4.03.2(3); Drainage 4.03.1(4)/4.03.2(4); Surfacing and Maintenance 4.03.1(5) and (6)/4.03.2(5) and (6); Reclamation 4.03.1(7)/4.03.2(7): • Following the Carbon Junction channel repairs, the reclamation contractor commenced work on repairing the access road to the North Pit. (Erosion to the surface and ditches had occurred during the heavy rains this past September, as noted in the Division's September 30 inspection report.) RECLAMATION SUCCESS - Rule 4.15, Rule 3: • Areas of the permit reclaimed in 2006 appear to be stable and functioning as designed. The North Pit upper and lower slopes were inspected, and found to be well vegetated,with no problematic erosion or rilling observed. REVEGETATION—Rule 4.15 Vegetative Cover; Timing: • For the Carbon Junction project, the permit-approved seed mix was specified and provided. TOPSOIL—Rule 4.06 Removal 4.06.2; Substitute Materials 4.06.4(4); Storage and Protection 4.06.3; Redistribution 4.06.4: • The quality of the soil used to construct the temporary diversion berm appeared to be remarkably good. Now that that material has been redistributed across the graded slope south of the Upper Carbon Junction Channel, the Division is encouraged that revegetation of the slope will be successful. ENFORCEMENT ACTIONS/COMPLIANCE No enforcement actions were issued as a result of this inspection. Successful completion of the Upper Carbon Junction Channel repairs will result in CV-2013-005 being terminated. Number of Partial Inspection this Fiscal Year: 2 Number of Complete Inspections this Fiscal Year: 2 Page 3 of 8