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August 11, 2014 C- 1992 - 080 /Carbon Junction Mine MLT <br />• The riprapped Carbon Junction Permanent Diversion, which was designed for the 100 -year <br />24 -hour event, was in good condition throughout its length. No signs of erosion and little <br />evidence of fresh sediment accumulation within the channel were observed (Photos 1 and 2). <br />• In the reclaimed Upper Carbon Junction Channel, the riprapped segment of the un -named <br />tributary was in good condition. Due to a lack of fresh sediment within and at the terminus <br />of the riprap, the Division infers that the small basin may not have experienced the same <br />intensity of precipitation that appears to have fallen within the main drainage of Carbon <br />Junction Canyon. <br />• At the point where the Carbon Junction drainage enters the permit area, the flow was divided <br />into two streams (Photo 3). The main flow had been concentrated in the southern half, in <br />which the grasses were still laid over and a veneer of fresh sediment had been deposited. The <br />northern portion was a smaller channel, developed partially on rock. <br />• Immediately upstream of the section reclaimed under TR -17, the flow was confined to a <br />single channel (Photo 4). This well- defined defined channel might be termed the "bankfull" <br />stage for this stream segment. <br />• The disturbed length of the Upper Carbon Junction Channel was reconstructed / reestablished <br />in November 2013 under TR -17. Overall, the reclamation appears to have performed <br />satisfactorily. <br />• The upstream limit of work accomplished under TR -17 consisted of rounded riprap being <br />placed to stabilize a short, steeper segment that transitions the flow to the flatter channel <br />below. A few boulders (Photo 5) had been dislodged and carried a small distance down the <br />slope, but the damage did not appear to be severe. <br />• Below the steeper segment, it was evident that the width of flow increased and the velocity <br />slowed somewhat. Grasses were still laid over, but there was more sediment deposited in <br />this reach (Photo 6). <br />• Downstream of the confluence with the un -named tributary, additional sediment fell out of <br />suspension when the velocity slowed further (Photo 7). <br />• The channel condition along the remainder of the distance to the permanent diversion was <br />fairly consistent, with some amount of sediment accumulation, and smaller vegetation still <br />laid over by the flow, as shown on Photos 8 and 9. <br />ROADS — Rule 4.03 <br />Construction 4.03.1(3) / 4.03.2(3); Drainage 4.03.1(4) / 4.03.2(4); Surfacing and Maintenance <br />4.03.1(5) and (6) / 4.03.2(5) and (6); Reclamation 4.03.1(7) / 4.03.2(7): <br />• The asphalt surface on certain portions of the main haul road has begun to deteriorate (Photo <br />10), but the road is overall in condition. <br />• The North Pit access road is surfaced with gravel, and it was in serviceable condition. In <br />November 2013, repairs were made to the ditch on the hill side of the road. The sediment <br />traps in the new ditch have accomplished their intended purpose with the recent storm events, <br />and were nearly filled with sediment (Photo 11). No evidence of erosion was observed. <br />• The owner's road that provides access to and through the former Sediment Pond 002 was in <br />serviceable condition, although sediment from the cut bank has overfilled the roadside ditch. <br />Number of Partial Inspection this Fiscal Year: 0 <br />Number of Complete Inspections this Fiscal Year: 1 Page 3 of 13 <br />