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2-31 <br />Sub-base preparation involved the use of a steel roller on 8"lifts of <br />material. Water was added in an attempt to maintain optimum moisture content <br />of 12%. Figure 2.2-5 shows the plan view of the McClane Canyon Haul Road <br />along with the longitudinal profile. Also shown are three cross- sections which <br />depict typical cut and fill sections. The side slope for the access/haul road will be <br />approximately 2 horizontal to 1 vertical in the fill area. Typical cross-sections <br />along with design specifics for the road ditches are found in Table 4.2-12. <br />Section C-C of Figure 2.2-5 shows a cliff to the South of the road that <br />became unstable and was a safety hazard. The upper portion of the cliff was <br />modified to a gentler slope. The cut necessary to stabilize the slope was a wedge <br />approximately 150 feet long and 0 to 20 feet wide at the top. <br />Section D-D of Figure 2.2-5A shows the profile of the small haul <br />road (Haul Road #2) that will be used to transport coal waste to the coal mine <br />waste pile as part of TR-16. The average grade of the haul road is <br />approximately 3.3% and the approximate original contour is nearly the same <br />surface as the operational surface. <br />Haul Road maintenance will be conducted continuously. As needed, berms <br />will be maintained, drainage ditches cleaned, gravel added, and debris removed. <br />During non-freezing weather, dust suppression will include watering and may <br />include dust suppressants such as Magnesium Chloride. <br />TR-16 M`-Volume 1 (Rev 05/08) <br />