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ameO <br /> C. Select Structural Fill <br /> 1. Select Structural Fill shall be placed for miscellaneous site grading as required by the <br /> MANAGER and CERTIFYING ENGINEER. <br /> 2. CONTRACTOR shall condition Select Structural Fill to a moisture content that allows <br /> compaction to the required density and that results in a finn,unyielding surface capable of <br /> allowing the movement of vehicles and equipment over the surface without causing rutting <br /> or other deleterious effects. <br /> 3. CONTRACTOR shall place Select Structural Fill materials with less than 30 percent rock <br /> materials above 3/4-inch size in maximum 12-inch loose lifts,and compacted to 95 percent <br /> of maximum dry density(ASTM D698). <br /> 4. CONTRACTOR shall condition and place Select Structural Fill containing more than 30 <br /> percent rock materials above 3/4-inch size (rock fill) in maximum 12-inch loose lifts and <br /> compact by a method compaction technique. The compaction equipment shall consist of a <br /> minimum ten 10-ton(static drum weight)vibratory smooth-drum compactor. The number <br /> of passes shall be subject to CERTIFYING ENGINEER's approval, at no additional cost <br /> to CC&V. The method SPECIFICATIONS may be changed at any time,at the discretion <br /> of CERTIFYING ENGINEER, based upon changes in material characteristics, field <br /> conditions,and/or compaction equipment. <br /> D. Underdrain Fill <br /> 1. Underdrain Fill shall be placed in the Underdrains as shown in the DRAWINGS. <br /> 2. CONTRACTOR shall condition Underdrain Fill that results in a firm, unyielding surface <br /> capable of allowing the movement of vehicles and equipment over the surface without <br /> causing rutting or other deleterious effects. <br /> 3. CONTRACTOR shall condition, place and compact Underdrain Fill by a method <br /> compaction technique. The compaction equipment shall consist of a minimum 10-ton <br /> (static drum weight) vibratory smooth-drum compactor. The number of passes and loose <br /> lift thickness shall be subject to CERTIFYING ENGINEER's approval, at no additional <br /> cost to CC&V. The method SPECIFICATIONS may be changed at any time, at the <br /> discretion of MANAGER,based upon changes in material characteristics, field conditions, <br /> and/or compaction equipment. <br /> 4. Provisions shall be made by CONTRACTOR for removal of oversize materials from fills, <br /> at no additional cost to CC&V. <br /> 5. The MANAGER will minimize the amount of traffic over the Underdrain Fill. <br /> E. Soil Liner Fill <br /> 1. Soil Liner Fill shall be placed within the limits of the mill site earthworks project as shown <br /> on the DRAWINGS and shall begin only after completion of all, or MANAGER and <br /> CERTIFYING ENGINEER approved portion of, excavation and Structural/Overburden <br /> Fill placement in the mill site earthworks project. <br /> Section 02200 Page 10 of 16 May 9,2012 <br /> Earthworks Revision 1 <br />