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RULE 2 - PERMITS <br />curve, and in such a manner as to comply with regulatory cross -slope and grade requirements, <br />control erosion, simplify drainage design, and maximize safety and environmental protection. <br />Haulroad D contains an approximate 150 turn to access /leave the southern coal storage facility. <br />This curve could cause problems with two -way truck haulage, however there is adequate visibility <br />over the entire length of the road segment. To alleviate potential problems signage will be installed <br />giving the uphill traffic the right -of -way at all times. Centerline profiles of the haul roads are <br />presented on Map 2.05.3 M3. A schematic of the typical haul road cross section is presented in <br />Figure 2.05.341, Typical Haulroad Cross - Section. <br />All haulroads will be constructed in accordance with Rule 4.05.1. Typical construction practices for <br />haulroads will involve implementing temporary drainage and sediment control measures, clearing <br />and grubbing vegetation (limited to the width needed for the roadway and drainage control), and <br />recovery and stockpiling of available soil materials. All soil material recovered from roads and <br />other areas will be placed in the topsoil stockpile located adjacent to PECOCO Pond (see Map <br />2.05.3 M1A). Potentially acid- and/or toxic - forming or frozen materials will not be used for either <br />road fill or as road surfacing materials. Road fill materials will be borrowed from the overburden <br />excavated from the portal area. <br />Road base and surfacing designs for the haul roads are based on site soil properties and the methods <br />outlined in the U.S. Department of the Interior, Bureau of Mines, Information Circular 8758, Design <br />of Surface Mine Haulage Roads - A Manual (Kaufman and Ault, 1977). <br />Road cut and fill involve the haulage, placement, and compaction of suitable road fill material (road <br />base) over the entire width of the road as follows: 1) Where there is more than 5 feet of fill, the top <br />5 feet will be compacted to 95 percent of American Association of State Highway and <br />Transportation Officials ( AASHTO) T -180, with the remainder compacted to 90 percent AASHTO <br />T -180; 2) Where there is a minimum of 3 feet, but less than 5 feet of fill, the entire fill will be <br />compacted to 95 percent of AASHTO T -180; and, 3) Where the road is in a cut, the roadway will be <br />over - excavated and a 3 -foot minimum thickness road fill placed and compacted to 95 percent of <br />AASHTO T -180. Moisture content and compaction will be monitored during construction. <br />A 12 -inch gravel base will be spread and compacted to 95 percent of AASHTO T -180, followed by <br />spreading and compaction of 6 inches of gravel surfacing to 95 percent of AASHTO T -180. <br />Typical road surfacing characteristics will conform to the following specifications: <br />Screen Size <br />Material Passing <br />1 -%2 inch <br />100% <br />1 inch <br />75 -90% <br />3/8 inch <br />40 -75% <br />No. 4 mesh <br />30 -60% <br />No. 10 mesh <br />20 -45% <br />No. 40 mesh <br />15 -30% <br />No. 200 mesh* <br />5 -15% <br />*The fraction passing the No. 200 mesh shall not be greater than two - thirds of the fraction passing <br />the No. 40 mesh. <br />TR- 01 -10. 2.05 -19 Revision 02/11 <br />