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COMPACTED FILLS <br />Any earth materials imported or excavated on the property may be utilized in the fill <br />provided that each material has been determined to be suitable by the soil engineer, <br />These materials should be free of roots, tree branches, other organic matter, or other <br />deleterious materials. All unsuitable materials should be removed from the fill as directed <br />by the soil engineer. Soils of poor gradation, undesirable expansion potential, or <br />substandard strength characteristics may be designated by the consultant as unsuitable <br />and may require blending with other soils to serve as a satisfactory fill material. <br />Fill materials derived from benching operations should be dispersed throughout the fill <br />area and blended with other approved material. Benching operations should not result in <br />the benched material being placed only within a single equipment width away from the <br />fill/bedrock contact. <br />Oversized materials defined as rock, or other irreducible materials, with a maximum <br />dimension greater than 12 inches, should not be buried or placed in fills unless the <br />location of materials and disposal methods are specifically approved by the soil engineer. <br />Oversized material should be taken offsite, or placed in accordance with recommendations <br />of the soil engineer in areas designated as suitable for rock disposal. Per the UBC/CBC, <br />oversized material should not be placed within 10 feet vertically of finish grade (elevation) <br />or within 20 feet horizontally of slope faces (any variation will require prior approval from <br />the governing agency). <br />To facilitate future trenching, rock (or oversized material) should not be placed within <br />10 feet from finish grade, the range of foundation excavations, future utilities, or <br />underground construction unless specifically approved by the soil engineer and/or the <br />developer's representative. <br />If import material is required for grading, representative samples of the materials to be <br />utilized as compacted fill should be analyzed in the laboratory by the soil engineer to <br />determine it's physical properties and suitability for use onsite. If any material other than <br />that previously tested is encountered during grading, an appropriate analysis of this <br />material should be conducted by the soil engineer as soon as possible. <br />Approved fill material should be placed in areas prepared to receive fill in near horizontal <br />layers, that when compacted, should not exceed about 6 to 8 inches in thickness. The soil <br />engineer may approve thick lifts if testing indicates the grading procedures are such that <br />adequate compaction is being achieved with lifts of greater thickness. Each layer should <br />be spread evenly and blended to attain uniformity of material and moisture suitable for <br />compaction. <br />Fill layers at a moisture content less than optimum should be watered and mixed, and wet <br />fill layers should be aerated by scarification, or should be blended with drier material. <br />Moisture conditioning, blending, and mixing of the fill layer should continue until the fill <br />materials have a uniform moisture content at, or above, optimum moisture. <br />Pacific Development Group <br />Filelserver\andreei4900\497681.foundshopctr <br />Appendix F <br />Page 4