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.7 <br />• <br />• <br />SEDCAD 4 for Windows <br />(: —.inhf loop. ,)nlnp —i. i Crh,uah <br />avlor West Trit <br />Filename: W Tay West Trib Ditch 10024.sc4 <br />tare Ditch <br />100 yr / 24 hr <br />Post - mining Phase <br />Environmental Solutions, Inc. <br />Cheyenne, WY 82001 <br />Exh. 7- 20E -42 <br />Printed 12 -27 -2010 <br />Revision Date: 12/31/10 <br />Revision No.: TR -81 <br />