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3.11 TOPSOIL PRESERVATION <br /> <br />All topsoil will be retained on-Site for use in the Restoration Plan. <br /> 3.12 SLOPES <br /> <br />All extractions except for the working face will be sloped at 1'1. All restored slopes will have a <br />maximum slope of 4:1. <br /> <br /> LIESCH ASSOCIATES, INC. <br />January 2003 Hydrogeologists. Engineers - Environmental Scientists .Page 8' <br /> <br /> <br />