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Paonia Member <br />The Paonia member contains a 3 to 4 foot coal seam with 1 foot <br />riders that are lenticular throughout the property. This coal may <br />thicken to the west where it has been reported to be 19 feet thick <br />near New Castle. Above the Upper sandstone, the A, B, and C seams <br />have been correlated across the property with only moderate <br />success. This coal series contains a total of 14 to 36 feet of <br />coal, with an average cumulative thickness of 25 feet. Although <br />relatively thick, these coals are generally more lenticular and <br />discontinuous. <br />Chemical Analyses <br />Chemical analyses of the coal seams to be mined, and also the roof <br />and floor material are reported in Appendix 3.3-1 and their <br />locations shown in Figure 3.3-2. <br />3.3.2.1.2 Structure <br />The dominant structure in the permit area is the Grand Hogback <br />monocline. The various formations dip toward the south at ap- <br />proximately 50 to 60 degrees without interruption. This uniformity <br />can be seen in a structure contour map drawn on the base of the <br />Wheeler coal (Figure 3.3-4). Drill hole information used to <br />construct this map can be found in Appendix 3.3-2. Because of the <br />topography and structure, the exploration drill holes tend to lie <br />along strike and therefore, little down-dip information is readily <br />available. However, data from a gas well drilled southwest of <br />SK-12, suggests the dip begins to flatten slightly at about 3000 <br />feet below the surface. <br />As stated in the introduction, no significant faulting or folding <br />have been identified in the permit area. <br />• <br />• <br />A geotechnical investigation by Chen and Associates identifies • <br />NC&C - Coal Ridge ~1 3-16 AHC/1145/900301 <br />