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SEDCAD 4 for Windows <br />• <br />='�_ I <br />Creek Mine <br />Pond 004 <br />25- Year, 24 -Hour Storm Event <br />As -Built Demonstration <br />. (This is a conservative demonstration. It assumes the principal <br />spillway is inoperable. Consequently, it over estimates <br />sediment storage and calculates a conservative top of sediment <br />storage elevation,) <br />(The following demonstration is the approved [Seneca II Mine, <br />TR -51 J, permanent postmine structure demonstration. It has <br />been reprinted and repaginated for this PAP), <br />Jcw <br />Hydro - Environmental Solutions, Inc. <br />P.O. Box 772996 <br />57 10th Street, Suite B <br />Steamboat Springs, CO 80477 <br />0 REG <br />26046 <br />ZZ <br />/////, NAL <br />'110 u,, <br />Filename: PSCM Pond004 As -Built 25Yr24Hr 1109.sc4 <br />Printed 11 -04 -2009 <br />2.05.3 -E2. C -2.1 12/09 <br />