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<br />material shall be compacted with the equipment used to spread the <br />material or a loaded haul truck. A minimum of two complete passes <br />' with the equipment shall be made over the lift prior to placement <br />of the next lift. A test pad shall be constructed to verify that <br />the equipment to be used is of sufficient weight. <br /> Alternatively, the material may be placed in loose lifts not <br /> exceeding 12 inches in thickness, compacted with a 10-ton smooth <br /> drum vibratory roller. A minimum of two complete passes with the <br />ll <br />ll b <br />h <br />l <br /> ro <br />er s <br />a <br />e made over the <br />ift prior to placement of the next <br /> lift. <br /> <br /> 6.4 Leach Facility Berms <br />' <br /> Fill material within the specification given in section 5.2 <br />' shall be spread in horizontal layers not exceeding 12 inches in <br /> thickness prior to compaction. Where hand-operated tampers are to <br /> be used, the lift thickness shall not exceed four inches before <br /> compaction. The maximum allowable particle size in the four-inch <br />b uncompacted lift shall be three inches. Sand material containing up <br /> to 50 percent fines may be placed in the same manner upon approval <br /> by the Engineer, otherwise placement shall be as specified in <br /> Section 6.3. <br />All materials shall be compacted at the specified water <br />content to an average dry density which is not less than 95 percent <br />' of the maximum dry density determined by the laboratory test <br />procedure ASTM Designation D-698, Method A. <br />6.5 Soil Liner <br />' The native soil materials meeting the specifications for soil <br />liner (Section 5.3) shall be amended with powdered bentorite prior <br />to compaction. The appropriate quantity of bentonite shall be <br />spread evenly over the lift to be amended using either a mechanical <br />' spreader or manual placement. The bentonite shall then be mixed <br />N-13 <br /> <br />