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• landings along the existing railroad grade. Grubbing operations will utilize <br /> medium to large sized dozer equipment and excavators. <br /> 3.5.2 Topsoil Removal and Stockpiling <br /> Using Soil No. 13 described in Exhibit i, topsoil management activities for the <br /> PC3 Conveyor construction are as follows: <br /> • The soil mantle considered to be suitable for plant growth is between 7 and <br /> 14 inches deep across the project area. The presence of unsorted glacial <br /> materials and rock with in the surface soil horizons will limit salvage <br /> opportunity in some areas. A conservative minimum depth of salvaged <br /> topsoil for the project area is estimated to be 8 inches. Additional soil will be <br /> salvaged if encountered with suitable textural characteristics. <br /> • • Care will be taken to avoid removal and stockpile of the clay layer associated <br /> in the B, horizon of Soil No. 13. Where encountered, clayey materials may be <br /> handled in association with materials ripped from weathered bedrock and <br /> incorporated into cut and fill slopes. Bedrock materials are weathered <br /> Precambrian granites with sandy textures. Concurrent management of both <br /> materials will moderate adverse effects of single concentrations of any one <br /> material. <br /> • Topsoil will be removed with scraper or truck and shovel operations. <br /> • Three topsoil stockpile locations have been identified for the project. The <br /> topsoil stockpiles are identified on the Reclamation Plan Map in Exhibit C. <br /> These areas will be utilized as directed by the constructing managers for the <br /> project. The storage volume for the three stockpiles will be determined from <br /> pErpm <br /> 18 <br /> January 16.1998 <br /> Plan tlo <br />