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J. J. Dudash -2- August 10, 2009 <br />Exh. 8-208 and replaces pages Exh. 8-208 and 208i. The Ditch Summary sheet <br />for Volume 9 has been revised, please see page App B-9. <br />6. Map 20 has been revised to include the new 3:1 topo for Gob pile #4, and <br />drainage areas G and F have been revised to account for the new drainage <br />configuration. <br />7. Figures 1,2 & 3 have been revised to show the 3:1 topography for Gob pile #4. <br />Sections C-C and D-D on Figure 1 have been re-cut to account for new gob pile <br />#4 configuration. <br />8. Map 18 was revised to show the new Gob Pile #4 configuration. <br />9. A Geotechnical Stability Analysis (Buckhorn Geotech; report date May 18, 2009) <br />is attached and will be part of Volume IX. This analysis demonstrates that slopes <br />as steep as 31-1:1 V for the upper portions of coal mine waste disposal area <br />number 4 will provide a factor of safety of 1.5 with an ultimate pile height of 150 <br />feet, both during and after construction, when proper methods of construction are <br />used and site conditions are periodically monitored. <br />Enclosed is the application for a technical revision, and a public notice. <br />Sincerely, <br />Jim Stover, P.E. <br />Consulting Engineer <br />Enclosures: <br />Volume Il: Maps 15-3,18,20,22-C, 21-3 <br />Volume III: Exh. 8-17-20, 74ix, 74x, 74xi, 8-29i, 8-208 <br />Volume IX: Pages 1-14, App. B-1 thru 9, 1313, 1314, B16, 1318, B23, 30i, 30ii 34, 34i, <br />35-38, 40, Figures 1- 3, Buckhorn Geotech Stability Analysis <br />cc: Wm. A. Bear, Jr.