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4 1 <br />• <br />Engineer. <br />• <br />The dewatering operation shall continue until such time that it is safe to allow the water table to rise in the <br />excavation and upon the approval by the Engineer. <br />3.03 STRIPPING -See Section 02100 -Site Preparation <br />3.04 PLACING EMBANKMENT MATERIALS <br />The suitability of each part of the foundation for placing embankment materials thereon, and of all <br />materials For use in embankment construction, will be determined by the Engineer. No embankment <br />material shall be placed in the fill area when either the material or the foundation or embankment on which <br />it would be placed is frozen. <br />No brush, roots, sod, or other perishable or unsuitable materials shall be placed in the embankment. <br />Each load of the material placed in the embankment, whether from excavation for other pans of the work <br />or from borrow pits, shall be placed in the location designated by the Engineer. <br />If, in the opinion of [he Engineer, the surface of the prepared foundation or the compacted surface of any <br />layer of eanhfill is too dry or smooth to bond properly with the layer of material to be placed thereon, it <br />shall be moistened and/or worked with harrow, scarifier, or other suitable equipment, in an approved <br />manner to a sufficient depth to provide a satisfactory bonding surface before the next succeeding layer of <br />eanhfill material is placed. If in the opinion of the Engineer, the compacted surface of any layer of the <br />eanhfill in place is too wet for proper compaction of the layer of eanhfill material to be placed thereon, it <br />shall be removed; allowed to dry: or be worked with harrow: scarifier, or other suitable equipment to <br />reduce the moisture content to the required amount; and then it shall be recompacted before the next <br />succeeding layer of eanhfill material is placed. <br />The eanhfill on each side of any structures shall be kept at approximately the same level as the placing of <br />the eanhfill progresses, and the structures shall be protected asainst displacement or other damage. <br />3.05 MOISTURE AND DENSITY CONTROL <br />A. Fill Material <br />The standard optimum moisture content is defined as "that moisture content which will result in a <br />maximum dry unit weight of the soil when subjected to the Standard Proctor Compaction Test as <br />described by ASTIvt D-698." Material represented by the samples tested having a placement <br />moisture content less than 2%a below standard optimum condition or more than 39o wet of the <br />standard optimum condition will be rejected and shall be reworked until [he moisture content is <br />between these limits. Additional moisture as required in the opinion of the Engineer may be <br />applied by sprinkling. <br />Each layer of the material on the embankment shall be compacted as indicated in the section <br />which applies to [he material being placed. During compaction, the placement moisture content <br />and dry density of the eanhfill shall be maintained within the control limits specified in each <br />section. <br />To determine that the moisture content and dry density requirements of the compacted eanhfill are <br />being me[, field and laboratory tests will be made at frequent intervals on samples taken at <br />embankment locations determined by the Engineer. The results of all <br />completed eanhwork tests will be available to [he Contractor at the office of the Engineer. <br />O I /99 <br />Section 02290 -Page 2 of 3 <br />