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E. The subgrade shall be compacted in accordance with the Quality Compaction Method. <br /> 3.2 FIELD QUALITY CONTROL <br /> A. "Blue Top"stakes shall be provided by the Contractor at 50-foot intervals to confirm that the subgrade is <br /> constructed to the required grades and elevations. Methods other than "Blue Top"staking may be allowed, <br /> if approved by the Engineer. <br /> B. The compacted subgrade shall be test rolled using a fully loaded aggregate truck(tandem) in a pattern <br /> approved by the Engineer. The subgrade stability shall be considered adequate when the surface shows <br /> less than 1.0-inch of yielding or rutting after one pass,or as otherwise approved by the Engineer. <br /> ****END OF SECTION**** <br /> Elk River Landfill, Inc. -R16.115896 SUBGRADE PREPARATION <br /> March 2019 PAGE 02335-2 <br /> V122217©Bolton&Menk,Inc.2018,All Rights Reserved <br />