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3.09 COMPACTING EMBANKMENTS <br />A. Conform to MnDOT Spec. 2105.3F, or as modified herein: <br />1. Compaction required for embankment materials shall conform to the Specified Density <br />Method with the testing location and rates being determined by the Engineer. <br />2. Clayey or silty soil used as fill will need to be placed at water content sufficient to <br />attain compaction (near the "optimum water content" defined in ASTM D698). If the <br />Contractor wishes to use soils which are not at the needed water content, it is the <br />Contractor's responsibility to moisture condition the soil (wet or dry) to a uniform <br />condition such that the entire profile (entire lift thickness) attains the minimum specified <br />compaction level. Some on Site soils will be wet (or could be dry) and the Contractor <br />shall not claim that this is a changed condition. <br />3. The Contractor shall recognize that inclement weather (sometimes heavy) occurs <br />during the construction season and the Contractor shall be responsible for protecting <br />the moisture condition of soils during the construction phase. Such protection <br />measures include sloping of exposed surfaces to promote runoff (avoid ponding) and <br />compacting exposed surfaces prior to rain events to minimize infiltration. <br />3.10 FINISH OPERATIONS <br />A. Conform to MnDOT Spec. 2105.3G, or as modified herein: <br />1. Finish grading of subgrade prior to placement of an aggregate base course shall <br />conform to the following tolerances: <br />a. Not vary by more than 0.05 feet above or below the prescribed elevation at any <br />point where a measurement is made. <br />2. Grading of the soils beneath the proposed topsoil shall be reviewed and approved by <br />the Engineer prior to the start of the topsoil placement. <br />END OF SECTION <br />EXCAVATION AND FILL <br />© 2015 Stantec 1 19380XXXX 31 23 00 - 6 <br />