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Dan Mathews <br />Page 2 <br />October 26, 2007 <br />3. The designs for upper road and portal bench "Reclaimed Ephemeral Channels" were <br />approved by our Division some time ago. Hence SEDCAD demonstrations have not been <br />provided for these channels. The designs are supported by peak flow calculations and <br />ditch sizing calculations contained on Table 3.9-3 and reclamation drainage basins <br />showing watershed boundaries aze provided on Figure 3.9-11. These "Reclaimed <br />Ephemeral Channels" are included on the Master List page M (vii)-1 revised with TR-23 <br />but the design information is not contained in Appendix M nor is it referenced. Please <br />provide a footnote to the Ditch Design Summary-Master List im Appendix M <br />indicating that the design information for the Portal & Upper Haul Road Channels <br />is located on Table 3.9-3 and Figure 3.9-11. <br />Please let me know if you have any questions regazding my review. <br />C: Denver File <br />