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<br />Section 02200 Page 10 of 18 January 14, 2011 <br />Earthworks Revision 0 <br /> <br />S:\Projects\1125G Squaw Gulch Valley Leach Facililty Design\I - Tech Specs\02200.r0.doc <br />or wait until subsequent temperature monitoring indicates the fill is unfrozen, at no cost to <br />CC&V. <br />11. Overburden slopes shall be compacted using a method specification and graded to meet the <br />grades and dimensions shown on the DRAWINGS. The Bedding Fill subgrade surface will <br />be prepared as identified in Section 2200 of the SPECIFICATIONS. <br />B. Structural Fill <br />1. Areas to receive Structural Fill will include, but are not limited to, slope reductions, and <br />miscellaneous site grading. <br />2. CONTRACTOR shall condition Structural Fill to a moisture content that allows <br />compaction to the required density and that results in a firm, 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 Structural Fill materials with less than 30 percent rock <br />materials above 3/4-inch size in maximum 12-inch loose lifts, and compact to 95 percent of <br />maximum dry density (ASTM D698). <br />4. CONTRACTOR shall condition, place and compact Structural Fill containing more than <br />30 percent rock materials above 3/4-inch size(rock fill) by a method compaction technique. <br />The compaction equipment shall consist of a minimum 10-ton (static drum weight) <br />vibratory smooth-drum compactor. The number of passes and loose lift thickness shall be <br />subject to CERTIFYING ENGINEER's approval, at no additional cost to CC&V. The <br />method SPECIFICATIONS may be changed at any time, at the discretion of <br />CERTIFYING ENGINEER, based upon changes in material characteristics, field <br />conditions, and/or compaction equipment. <br /> Maximum rock size for rock fill shall be two-thirds of the compacted lift thickness, unless <br />otherwise approved by MANAGER, DESIGN ENGINEER, and CERTIFYING <br />ENGINEER. CONTRACTOR shall remove oversize materials from fills at no additional <br />cost to CC&V. <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 firm, 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