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<br />124. The applicant has submitted designs for the rail spur in Exhibit 19 of the permit materials. <br />However, no information addressing Rule 2.06.8(4) and Rule 4.24 could be located. <br />Please refer to the original question. This response remains inadequate at this time. <br />Rule 4.02 Sians and Markers <br />Responses to questions 126 and 127 are adequate. <br />Rule 4.03 Roads <br />Under this section, all responses were found adequate except as listed below. <br />128. Section 4.03.1(1)(d)(i) of the Boazd's Regulations requires a certification report be <br />submitted to the Division upon completion of construction of any haul road. This <br />regulation requires the certification to state that the road has been constructed as designed <br />and in accordance with approved plans. <br />This means that the Division must have haul road designs to review and approve during <br />the mine permit application stage, so the certification report (the certified "as-built") can <br />state that the haul roads were as designed and constructed as approved by the Division. <br />Plan views of the locations of the haul roads overlain onto maps of the existing <br />topography (Maps 2.05.3-2 and 2.05.3-3) aze sufficient to determine road widths, but aze <br />insufficient to determine the proposed road gradient. Further, numerous sections of the <br />Jeff Canyon haul road between stations 0+00 and 260+38 will cut through natural hill <br />slopes that exceed 30% in grade. This means that Figure 2.05.3-10 would be referenced <br />in the construction of the road. However, it has not been shown which sections of the <br />Jeff Canyon haul road will exist in unconsolidated rock (cut slopes limited to no steeper <br />than 2H:1V), which will exist in rock (cut slopes limited to no steeper than 0.25H:1V), <br />and which will have steeper slopes, needing a geotechnical safety factor analysis. Please <br />provide this information. <br />It appeazs that a portion of the Jeff Canyon haul road may be proposed at a grade steeper <br />than regulatorily allowed. Section 4.03.1(3)(a)(iii) allows no section of haul road to be <br />steeper than 15%. The hairpin tum between stations 124+7a and 141+18 seems to be <br />proposed at a 25% grade. Please address this. <br />Please relocate the section of the Jeff Canyon haul road between stations 221+83 and <br />227+95 out of the natural drainage. This is regulatorily prohibited (Section 4.03.1(3)). <br />We recommend the road be built higher on the hillside. <br />A section of the Lorencito Canyon haul road, immediately south of station 75+45, will <br />be cut in a hillslope with a grade of about 60%. Please provide a cross section for this <br />road cut. <br />135. The applicant's response bears additional discussion. The Division asked whether there <br />