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The moisture content of the earthfill material prior to and during compaction shall be distributed <br />uniformly throughout each layer of the material. As far as practicable, the materials shall be <br />brought to the proper moisture content by adding supplementary water, if required, to the material <br />by sprinkling on the earthfill and each layer of earthfill shall be conditioned so that the moisture is <br />uniform throughout the layer. <br />Density control of compacted earthfill shall be such that the dry density of the compacted material, <br />as determined by tests performed by an approved laboratory paid for by the Contractor, shall <br />conform to not less than 90% of its Proctor maximum dry density. Material which does not meet <br />these requirements will be rejected and shall be reworked until a dry density equal to or greater <br />than these requirements is reached. <br />3.06 PLACING AND COMPACTING <br />A. Compacted Fill <br />The material shall be placed in areas shown on the Plans in continuous and approximately <br />horizontal layers, not more than 12- inch loose lifts. The combined excavation and placing <br />operations shall be such that the materials will be sufficiently blended to secure the best <br />practicable degree of compaction and stability. <br />The material shall be compacted to 90% of the Standard Proctor as described in ASTM D -698. <br />The method of compaction shall be submitted to the Engineer for approval. <br />END OF SECTION <br />Wattenberg Resource Pond 3 Slurry Wall Section 02290 — Fill Area Construction <br />Page 3 <br />