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Joe Dudash <br />June 11, 2009 <br />BRL: Figures 1 & 2 are updated showing locations of Gob Piles 1-3. Gob Pile #3 is in the field <br />south of SH 133 and not shown on any Figures. <br />7. DRMS: On Volume IX, Figure 1, Section D-D', there is an unidentified blue line that roughly <br />parallels the green original ground surface line. <br />Please identify the blue line, or remove if it is irrelevant <br />BRL: It appears the blue line was irrelevant and has been removed from Figure 1. <br />8. DRMS: In the Legend for Figure 2 (Volume IX), symbols for the rock drains and the lateral <br />subdrains have not been provided. There are also some small, fuchsia concentric circles near <br />the haul road that are not identified in the legend. <br />Please modify the Legend for Figure 2 to include symbols for the items listed. <br />BRL: The rock drain and lateral subdrains have been added to the legend of Figure 2. The <br />fuchsia concentric circles are utilities, and lines have been drawn between the circles for <br />clarification. <br />9. DRMS: In the southwestern corner of Map 15-3 is proposed Gob pile, with a note to refer to <br />Volume XI. <br />Please verify that Volume Xl is correct (perhaps it should be Volume IX?). <br />BRL: Volume XI is correct for proposed Gob Pile #3. <br />Hydrologic Review <br />10. DRMS: The hydrology designs were well done. However, a few minor changes need to be <br />made in the table on page App-139 of Appendix B entitled "Summary Coal Mine Waste Disposal <br />Area Ditches and Culverts" and on Figure 3, entitled "Coal Mine Waste Disposal Area Pond F <br />Detail". <br />A. For ditches F6 and F18, the ditch depths listed in Appendix B for the minimum grade <br />and for the maximum grade should be the same for each ditch since the grade of each <br />ditch is continuous. The same is true for the velocities for minimum and maximum <br />grades. Please revise Appendix B accordingly. <br />BRL: Updated table on Page B-9 to show constant ditch depths for ditches F6 and F18. <br />B. The peak flow for ditch F9 is listed in Appendix B as being 0.00 cfs instead of the 1.67 <br />cfs listed on page App-B20. Please revise. <br />BRL: Updated table on Page B-9 to show the correct flow for ditch F9. <br />C. For ditch F14, the D50 size is listed in Appendix B as being 21 inches in the table but <br />as being 9 inches on page App-B25. Please revise accordingly.