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<br />' <br /> U.S. Standard % Finer by <br />' Sieve Size Weight <br /> 3/8 inch > 65 <br />' #4 <br />#10 45-95 <br />25-85 <br /> #40 5-70 <br />' #200 < 50 <br />' Oversized rock present in the fill shall be removed to the downstream exterior :.lopes for slope <br />protection. <br />' Type 1 materials placed within the embankment raise shall be placed per a method specification <br />which will be developed in the field by the Engineer. The method specification shall define the <br />' lift thickness, amount of moisture required and total number of passes with apprcved compaction <br />equipment to achieve the minimum density specified. If materials fall intc anon-testable <br />definition per ASTM D-698, the Engineer shall perform bulk density tests t~~ determine the <br />' maximum density, and verify the performance of the method specification. <br />' The Type 1 embankment raise fill shall be keyed into the existing fill [o ensure adequate bonding <br />between the materials. The foundation materials beneath the raise fill shall also be scarified and <br />moisture conditioned as directed by [he Engineer prior to placement of the Type 1 fill materials. <br />' 6.3 Road Base Fill Material <br />' Road base fill placed on the embankment raise crest or other ares as directed by the Engineer, <br />shall consist of free draining, durable sands, and gravels with an LA abrasion of less than 50 <br />' percent (500 rev.). Road base fill may be processed locally from mine pit excavations of waste <br />rock or off-site sources. Road base fill shall be placed in eight-inch maximum lcose lifts, wetted <br />' as approved by the Engineer, and compacted by two passes of a 10-ton smooth drum vibratory <br />roller, or equivalent. <br />1 <br /> <br /> <br />' -13- <br /> <br />