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Mine Support Facilities <br />The Disturbance Map 5-2 shows the location of all of the mine facilities and each structure is <br />labeled according to its intended and current use. All facilities have been designed, constructed, <br />and maintained in accordance with Section 4.04 of the performance standazds. Each facility is <br />designed to be mobile or portable. No permanent facilities will be constructed. <br />Prior to construction of the facilities, all topsoil was salvaged and stored (see 2.05.3(5) and Map 5- <br />1). The facilities were located and constructed according to the particular specifications for that <br />structure. There are no specific design criteria for the particulaz structures other than criteria <br />assigned in designing the sediment control system and the air pollution control measures, both of <br />which are described in this section. <br />Existing Facilities <br />There aze no regulated existing structures on-site prior to mining and as a result, there aze no <br />compliance plans, or designs which aze required by this section. <br />Roads, Conveyors, and Rail Systems <br />One haul road from the pit to the staging area as shown on Map 5-1 has been constructed. The haul <br />road described below has been designed to comply with the design specification of Rule 4.03.1. <br />The road is approximately 4,000 feet long and the overall grade will be five percent (5%). <br />Haul road specifications aze contained in Appendix 5-1 which includes profiles and other <br />specifications such as width, gradient, surface specifications, cut and fill information and culvert <br />and ditch information. Specific discussions on the care and maintenance of the outslopes of the <br />haul road have also been described in Appendix 5-1. Road designs have been reviewed and <br />certified by a registered professional engineer as set forth in Appendix 5-1. Oakridge's haul road <br />has been designed to ensure that the construction, maintenance and post-mining conditions of the <br />haul road into and across the site will control erosion, siltation and the pollution of water entering <br />and leaving the area which the road will cross. The slopes and culverts of the road were designed <br />and aze maintained in such a way to prevent additional contributions of suspended solids to run off <br />outside the permit area. In addition, there are no alternative design criteria or specifications other <br />than the proposed culvert spacing which deviates from the criteria set forth in Rule 4.03.1. <br />A section of the haul road crosses over the box cut spoil azea which filled a section of Cazbon <br />Junction Canyon within the permit area. The watershed above this azea is less than one square mile. <br />There aze no fords of ephemeral streams. No steep slope cuts are involved with the subject haul <br />road. <br />The surfacing of the haul road has been described in Appendix 5-1. Initially, a layer of bedrock was <br />established for the haul road and covered with crushed rock and gravel according to the schematic <br />in Appendix 5-1. <br />TR09, TRl1(v1.0) 5-3 Revised 3/98, 8/02 <br />