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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 />If, in the opinion of the Engineer, the surface of the prepared foundation or the compacted surface of any <br />layer of earthfill 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 />earthfill material is placed. If in the opinion of the Engineer, the compacted surface of any layer of the <br />earthfill in place is too wet for proper compaction of the layer of earthfill 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 earthfill material is placed. <br />The earthfill on each side of any structures shall be kept at approximately the same level as the placing of <br />the earthfill progresses, and the structures shall be protected against 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 ASTM D- 698." Material represented by the samples tested having placement <br />moisture content less than 2% below standard optimum condition or more than 3% wet of the <br />standard optimum condition will be rejected and shall be reworked until the 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 the material being placed. During compaction, the placement moisture content <br />and dry density of the earthfill 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 earthfill are <br />being met, field and laboratory tests will be made at frequent intervals on samples taken at <br />embankment locations approved by the Engineer. The results of all completed earthwork tests <br />will be available to the Engineer on -site. <br />Materials not meeting the specified moisture content and dry density requirements, as determined <br />by the tests, shall be reworked until approved results are obtained. Reworking may include <br />removal, rehandling, reconditioning, rerolling, or combinations of these procedures. The <br />Contractor shall be entitled to no additional allowance above the prices of the work required to <br />achieve the placement moisture content and density specified in this section. <br />Wattenberg Resource Pond 3 Slurry Wall Section 02290 — Fill Area Construction <br />Page 2 <br />