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• 3.7.3 Access Roads <br />Access roads are those roads at the Trapper Mine that are used to provide access to areas not ser- <br />viced by haulroads but which receive more than light duty use. Such roads provide access to sedi- <br />mentation ponds and topsoil stockpiles and except for differences specifically noted in this section, are <br />designed, constructed, maintained and reclaimed following the same procedures described for <br />haulroads in Section 3.7.2. A registered professional engineer certifies the design and construction <br />practices of access roads built at Trapper Mine after August 1, 1995 (see MR -151) and the same will be <br />true of future access roads. For those access roads constructed prior to August 1, 1995, a Statement <br />of Compliance is included in Appendix S. The more frequently used access roads are shown on map <br />M-52. <br />3.7.3.1 Location <br />Due to the nature and purpose of access roads, they cannot always be located on ridge tops. For <br />example and as stated previously, roads are required to provide access to sedimentation ponds. <br />Because the ponds are located in drainages, the access roads must also be located in the drainages. <br />Nevertheless, when practicable, access roads are located on ridges or other topographic positions <br />which provide the best available grade (refer to Section 3.7.2.1). <br />• 3.7.3.2 Design and Construction <br />• <br />The overall grade of access roads is maintained at ten percent or less. When practicable, access roads <br />are designed at eight percent or less grade. There are some sections of a few access roads that <br />approach 15 percent grade. These sections are less than 1,000 feet in length. Some very minor <br />sections, 300 feet or less in length, exceed 15 percent grade. None of these, however, exceed the cri- <br />teria of more than 300 feet of pitch grade exceeding 15 percent per any consecutive 1,000 feet. <br />When a road embankment is required on a hillside and the slope exceeds 3H:1V (33%), the area is <br />scarified prior to the placement of fill. The embankment is built in a series of compacted lifts to <br />withstand the anticipated volumes <br />3-171 <br />--PK-� . <br />