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the area will be graded similar to its previous condition. The temporary <br /> culverts will be removed and the basic shape of the river bed will not be <br /> changed. The use of this river run material will not cause a significant <br /> increase in the suspended solids load of the river because the material does <br /> not contain appreciable amounts of clay or soil. The temporary road joining <br /> the existing access road to the temporary river crossing will be graded from <br /> the side banks of the existing road. Additional fill material may be obtained <br /> from the portion of existing road to be removed. A small portion of this <br /> excavated material may also be used as a surface over the roadway of the <br /> temporary river bed crossing, although CF&I will utilize this construction <br /> practice only if the river-run material cannot be compacted sufficiently. <br /> After the bridge has been constructed, the area will be graded similar to its <br /> previous condition and the area will be revegetated in accordance with the <br /> applicable sections of Permit Application No. C-013-81. <br /> 2) Excavation of Culverts. The location of the material to be excavated <br /> is shown on the Plan and Section Drawing (Exhibit C). This material will be <br /> excavated from the area over the culverts and the culverts will be removed. <br /> The remainder of material will then be excavated to construction grade (labeled <br /> "Original Ground" on Plan and Section Drawing). The material to be excavated <br /> is subsoil that was used to originally construct this access road. This <br /> subsoil material will be taken to the existing subsoil storage area and placed <br /> into storage in accordance with the applicable sections of Application C-013- <br /> 81 . <br /> 3) Bridge Construction. Footings will be installed and the bridge <br /> abutments and wing walls will be poured. All will be constructed of reinforced <br /> concrete. Backfill behind the bridge abutments will be placed in lifts and <br /> compacted by mechanical means. The four precast Twin "T" beams will be placed <br /> and secured; two 12-ft long approach pads to the bridge will be poured of <br /> reinforced concrete, and the bridge top will be surface with concrete or <br /> asphalt. <br /> 4 <br />