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Rob Zuber <br />Page 2 <br />March 10, 2016 <br />1013, however no cross section locations are shown on that map. Later, under the sub -heading <br />Stratigraphy, the text refers to Figures 2.04.6-5 Sheets 1 through 3. <br />The application submission contains two sheets with geologic cross-sections on, titled "Figure <br />2.04.6, Sheet 1 of 2" and "... Sheet 2 of 2". A note on these sheets refers to Map 11B for cross- <br />section locations. <br />Please update the text to ensure it is consistent with the maps and figures submitted. Please <br />show the locations of all geologic cross-sections on Map 7A. If the same figures are to be used in <br />order to comply with rule 2.04.7 the cross section locations should also be shown on Map 10B. <br />CCC revised the text of Volume 15, Rule 2, Page 15 to read "The stratigraphy is also <br />represented on five cross sections presented as Figures 2.04.6 Sheets 1 and 2. A key to the <br />location of the geologic cross sections are shown on Map 7A". Later, under the sub -heading <br />Stratigraphy, the text has also been revised to maintain consistency. <br />The updates to Map 7A made on 7/9/15 show the cross section locations. <br />The response is sufficient. <br />66. The cross sections shown in Figure 2.04.6, Sheets 1 and 2 are drawn at a scale of 1" = 400' <br />(horizontal and vertical), with more than 70 stratigraphic layers. The scale makes it extremely <br />difficult to extract relevant information from the figures (particularly the thickness of the Km <br />layer). <br />Please redraw the cross-sections with vertical exaggeration. A scale of 1" = 50'-100' on the <br />vertical axis would be appropriate. <br />CCC declined to change Figure 2.04.6, making the point that these figures had been previously <br />approved under PR -3 at the same scale and that other comments made by the Division <br />showed that the relevant information could be extracted from them. The Division maintains <br />that the cross sectional drawings would be easier to interpret and more legible if re -scaled, <br />but concedes that they are adequate for their purpose. <br />The response is sufficient. <br />67. The legend on Figure 2.04.6, Sheets 1 and 2, shows layers marked "Pit Shell", "TCT" and "STCM" <br />in addition to the 70+ identified coal seams. These layers appear not to have been drawn. <br />Furthermore, it is not clear what "TCT' and "STCM" refer to. Per the text, the lowest coal seam <br />to be mined is GB which is shown in blue on the cross-sections. The Smectite layer (Km), which <br />has been identified as a laterally continuous low -permeability layer, is shown in pink. <br />Please clarify the terms used in the legend. Please also display the first aquifer below the lowest <br />coal seam to be mined (presumably the Trout Creek Sandstone) on the cross-section. <br />CCC added an explanatory note to each sheet of Figure 2.04.6. <br />The response is sufficient. <br />