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Spiess Rancho Subdivision <br /> Page No. 7 <br /> APPENDIX A <br /> ENGINEERED FILL SPECIFICATIONS <br /> CLEANING AND STRIPPING <br /> Work includes cleaning and stripping of the building pads and <br /> surrounding areas. From this area remove all organic debris. <br /> This may necessitate removing the top 3 to 4 inches, which <br /> contains the heavy root growth. <br /> ` CONSTRUCTION OF FILL <br /> ( 1) Preliminary Operations <br /> After the clearing and stripping operation and the cuts <br /> have been completed and before any fill is placed in any <br /> particular area, the existing surface shall be scarified <br /> to a depth of 8 inches and compacted to dry densities in <br /> excess of 90 percent of the maximum dry density as <br /> obtained by the Modified Compaction Test, ASTM D1557, <br /> designation. It may be necessary to adjust the moisture <br /> content of the subgrade soil by watering or aeration, to <br /> bring the moisture content of the soil near optimum in <br /> order that the specified densities can be obtained. <br /> ( 2 ) Source of Material <br /> Engineered fill materials (on site or import) shall <br /> consist of sandy silts, sands, or sands and gravels <br /> unless stated otherwise in the report. Engineered fill <br /> material shall not contain rocks greater than 3 inches in <br /> greatest dimension and should be nonexpansive in nature <br /> with a plasticity index less than 12 . <br /> At least seven days prior to the placement of any fill, <br /> the engineer shall be notified of the source of materials <br /> and samples shall be obtained to determine the <br /> suitability of the materials and for conducting <br /> laboratory compaction test on these samples. <br /> (3 ) Placing and Compacting <br /> Fill materials shall be spread in layers and shall have <br /> _ a uniform moisture content that will provide the <br /> specified dry density after compaction. If necessary to <br /> obtain uniform distribution of moisture, water shall be <br /> P pER30� <br /> � � N <br /> Z W <br /> Q <br /> 93SOG\ <br /> P <br />