Laserfiche WebLink
54 tons, will be used to transport the coal. The road surface will have a minimum width of 20 feet, and the road is <br />paralleled by existing grass lined borrow ditches for the majority of its length. <br />Prior to using the haul road A, the road will be upgraded and the upgrading will require the following replacement of <br />undersized culverts: compacting fill material around culverts, installing inlet structures, testing existing road sub-base <br />to determine [he amount of surfacing that will be required to handle anticipated weight loads, and surfacing road with <br />durable material. <br />The testing procedure for determining adequacy of road sub-base will require that prior to testing the upper 8 inches is <br />scarified and then compacted. The material will be compacted to 95% standard Proctor. Also, [he road will be proof <br />rolled to determine if any soft spots exist that will require additional work. Once this is completed the road will be <br />surfaced with [he required amount of red rock or road base material. <br />In reference to the small fills that will be required at the culvert locations, all topsoil and vegetation will be kept out of <br />the fill. The fill material, which will be existing material already in place over the undersized culverts, will be <br />replaced in one foot lifts and compacted per the above specifications. The fill will be brought up in successive lifts <br />and at least one foot of fill will be placed over the top of the culvert. The profile of the road is shown on Figure 56B, <br />along with culvert and respective fill locations. The outslopes of the fill will be 1'/zH: l V or flatter. <br />Figures 56C and 56D provide additional details on the fills that will be constructed in both of the drainages. The <br />detail shown for the 60 inch culvert fill indicates that extra material will be generated when the culvert is replaced by <br />the larger 60 inch culvert. This material will be redistributed over the existing road and then surfaced with a durable <br />material. <br />In association with the above, a haul road will be constructed [o the north of the existing warehouse yard. Prior to <br />construction, topsoil will be salvaged, approximately 325 cy, and stockpiled in the existing stockpile northeast of the <br />warehouse yard. The southern toe of the topsoil pile will be removed and the topsoil will be placed further to the <br />north of the pile. Fill material, approximately 500 cy, will be hauled in to bring the road up to its design grade. The <br />fill material will be obtained from the overburden stockpiled adjacent to the refuse pile. The road will be extended <br />from the existing rock dust tank pad and connect with the coal laboratory parking area. The existing culvert will be <br />extended under the road and a rock headwall or similar type structure will be constructed around the outlet. A 16-inch <br />culvert will be placed under the haul road to drain water that will collect in the low area between the haul road and the <br />warehouse yard pad. Please refer to Map 27 for the location of the haul road. <br />The new road will be surfaced with a durable material, as discussed above, capable of handling the anticipated vehicle <br />load. It is anticipated that tandem trail highway trucks will be using the road. <br />The Mine will provide the Division with the results of surfacing material durability testing and haul road stability <br />design parameters, for the Division's approval, prior to reconstruction of haul road A and the haul road adjacent to the <br />warehouse. The Mine will also provide professional certification for these haul roads prior to the roads being placed <br />in use as haul roads. <br />Upon completion of mining, haul road A will be reclaimed by removing the surfacing material and small fills and <br />blading the road to blend in with the surrounding topography. The culverts will be removed and disposed of in <br />accordance with local regulations. The area will be seeded with the rangeland seed mixture. The haul road adjacent <br />to the warehouse storage yard pad will be reclaimed during reclamation of the No. 5 pad. The fill material will be <br />used in backfilling the portal area and then the area will be topsoiled and seeded with the appropriate seed mixture. <br />EC is planning on leaving a number of roads at the site after completing mining and reclamation activities. These <br />permanent roads are shown on Map 29, Reclamation Plan. The roads are required to provide access [o the reclaimed <br />areas to facilitate the post-mining land use. As is shown on Map 29, these roads will provide access into the irrigated <br />haylands along the Williams Fork River, the pastureland/cropland a[ the former No. 9 portaUrefuse area, the <br />Permit Revision 04-34 2.05-18 Revised 7/2/04 <br />