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2.04.6 Geology Description <br />(3) Underground Mining <br />(a) <br />(i) Figure 2.1-5, Isopach map of the Total Mineable thickness of the <br />Cameo seam to be mined. Figure 2.1-6, Isopach Map of the Upper <br />Cameo Seam provides the thickness of the seam to be mined. Figure 2.1- <br />8 Overburden on Top of Upper and Total Cameo Seam shows the depth <br />of the seam. Figure 2.1-4 Generalized Columnar Section shows each <br />stratum of the overburden, and the stratum immediately below the lowest <br />coal seam to be mined. <br />(ii) Coal crop lines and the strike and dip of the coal to be mined are <br />shown on Figure 2.1-1 Mine Plan and Sequence Map. Geologic cross <br />sections of the proposed permit area are shown on Figures 2.5-2, 2.5-3 <br />and 2.5-7. <br />(iii) <br />(A) Drill logs are summarized beginning on Table 2.1-3. Drill <br />hole data and geophysical logs are presented in Appendix G. <br />(B) Please refer to discussion beginning on page 4-13. <br />(C) Table 2.1-7 presents chemical analysis of the coal seam for <br />acid-forming or toxic -forming materials. <br />(D) Tables 2.1-4 and 2.1-5 present the chemical analysis of the <br />stratum immediately above and below the coal seam to be mined, <br />for acid-forming, toxic -forming, or alkalinity -producing materials. <br />(E) There are no clays or clay shales in the stratum immediately <br />above and below each coal seam to be mined that would pose a <br />problem to room and pillar mining. <br />PR -02 2.04-13 08/11 <br />