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• utilize this haul road segment will be 10 wheel dump trucks and 18 wheel haul trucks, <br />Truck traffic will also be very limited and sporadic. Use of the waste disposal area will <br />only occur after the McClane Canyon mine has generated coal mine waste. Four truck <br />loads per hour is the anticipated maximum traffic volume. The haul trucks will only <br />encounter an occasional vehicle on the road. Considering the low volume and sporadic <br />use of the haul road, the width and surfacing of the haul road should be adequate for <br />the intended traffic. <br />The haul road is located in the valley floor to minimize erosion. There are no <br />fords of ephemeral stream channels. <br />The haul road begins at SH139 and ends at the east edge of the waste disposal <br />area. The road is approximately 6,300 feet long with an average grade of 2.3%. The <br />maximum pitch grade of the road is 3%. <br />There are virtually no road cuts on this haul road section. It is constructed on <br />grade in the valley floor. The relocated section of haul road will also be constructed on <br />the valley floor. For the relocation of the haul roads on site, all vegetation material and <br />• topsoil will be removed from the design road bed, shoulders, and surfaces where <br />associated structures will be placed. Topsoil will be placed in the topsoil stockpile. No <br />vegetation material or topsoil will be placed beneath or in any haul road embankment. <br />Construction <br />The following embankment specification applies to road sections not within the <br />disturbed area in accordance with Rule 4.05.2(4). In the placement of embankment for <br />the haul road, materials will be spread in layers approximately 12 inches deep, and <br />such lifts made uniformly over long stretches and for the full width of the embankment. <br />Each lift will be moistened or dried to a uniform moisture content suitable for maximum <br />compaction. Hauling equipment will be routed both ways over the fill and routing varied <br />sufficiently to achieve uniform compaction. Compaction will be carried to the edge of <br />the fills so that the final slopes are firm. A sheepsfoot roller or other suitable equipment <br />may be required to achieve compaction. Compaction of each lift will continue until the <br />• Permit Renewal 2-8 09/03 <br />