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* If expansive material is used for fill, moisture content should be -1% to +3% above optimum. <br />** If expansive material is used for fill, moisture content should be optimum to 4% above optimum. <br />MOISTURE - DENSITY DETERMINATION <br />(PROCTOR) <br />Samples of representative fill materials to be placed shall be furnished by the contractor to the Soils <br />Engineer at least 48 hours prior to compaction testing for determination of maximum density and optimum <br />moisture for these materials. Tests for this determination will be made using methods conforming to <br />requirements of ASTM D 698. Copies of the results of these tests will be furnished to the contractor. <br />These test results shall be the basis of control for compaction effort. <br />DENSITY TESTS <br />The density and moisture content of each layer of compacted fill will be determined by the Soils Engineer <br />in accordance with ASTM D 1556, D2167 or D2922, at frequencies required by municipal codes, city or <br />county inspectors, or by the Soils Engineer. Any material found to not comply with the minimum specified <br />density shall be recompacted and retested until the required density is obtained. The results of all density <br />tests shall be furnished to both the owner and the contractor by the Soils Engineer. <br />