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section B-B', it appears as though the correct horizontal scale should be 20 <br />feet/inch. Please check the B-B' cross-section line and detail and correct the scale <br />as necessary. <br />7. Based on a review of Volume IX, Figure 1, Coal Mine Waste Disposal Area, the <br />horizontal scale of the inset cross-section C-C' has been changed and appears to <br />be in error. The horizontal scale on the currently approved figure is shown as 40 <br />feet/inch. The horizontal scale on the revised figure is shown as 100 feet/inch. <br />This changes the length of the cross section from 800 feet to 2,000 feet. To <br />further complicate the issue, based on the scale of the small map showing the gob <br />piles, at 200 feet/inch, cross-section B-B' is only 400 feet long (2 inches). Based <br />on the 2:1 slope indicator on the "Proposed Ground Surface" line for cross-section <br />C-C', it appears as though the correct horizontal scale should be 20 feet/inch. <br />Please check the C-C' cross-section line and detail and correct the scale as <br />necessary. <br />This concludes my review of the Bowie No. 2 Mine's TR-64. Once BRL responds to the <br />adequacy comments I will complete a new cost estimate for the revision. Please let me <br />know if you have any questions or need any additional information. <br />cc: Sandy Brown