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methods to be covered with non-toxic spoil. If "shale and other extraneous material" will be <br />• returned to the pit floor, those materials must be determined to be non-toxic prior to their <br />placement. <br />e n <br />LCC will employ a breaker facility at the loadout, and acknowledges that the Division <br />considers this material coal processing waste. Additional discussion has been added to <br />Section 2.05.3(8) on revised page 2.05-40. LCC has provided geochemical documentation <br />on roof, coal, floor and overburden materials anticipated from the site in Exhibit 6. In <br />addition, page 2.05-59 in Section 2.05.4 includes a commitment to sample plant growth <br />medium prior to seeding. <br />74. Please provide the engineering designs for the four concrete portal openings at the P ] portal <br />site, the four concrete portal openings at the P2 portal site, the fotu concrete portal operings <br />at the P3 portal site, the four concrete portal openings at the Rl portal site and the three <br />concrete portal openings at the R2 portal site (Section 2.05.3(3)(a)). Please provide a cross <br />section that demonstrates how far into each hillside the concrete structures will extend, and <br />indicate the different safety bench configurations proposed. <br />es onse <br />• Figure 2.05.3-4a has been added to show engineering design for the concrete portal openings <br />for the underground mines. This includes cross-sections showing the extension of the <br />concrete structures. Figures 2.05.3-5 through 2.05.3-7 show the safety bench configuration <br />at each portal site. <br />75. Please provide on a map the location of all existine underground and overhead utility lines, <br />utility poles, and substations/ttansformers. Please provide on the same map the location of <br />all prooosed utility lines, poles, substations, and light-use maintenance roads (Sections <br />2.05.3(3)(a) and (b)). <br />Res~nse <br />This information is shown on Map 2.05-3-I, Mine Plan and on a new Map 2.05.3-4, Surface <br />Blasting Area, as discussed on revised page 2.05-37a. <br />76. Please provide engineering plans and drawings for the location, construction, use and <br />maintenance of the railroad spur. These should include specifications for width, gradient, <br />surfacing, fills, hillside cuts, embankments, and culverts. (Sections 2.05.3(3)(a), 2.05.3(3)(c) <br />and 4.04) <br />Response <br />• Engineering plans for the railroad spur aze show in Exhibit 19. <br />22 <br />