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..01 <br /> Escalon Subdivision <br /> Page 9 <br /> May 30,2000 <br /> APPENDIX A <br /> r <br /> ENGINEERED FILL SPECIFICATIONS <br /> A. CLEANING AND STRIPPING <br /> Work includes cleaning and stripping of the building pad and surrounding areas as indicated <br /> ` on the drawings. From these areas remove all debris,old pavement,trees,brush,roots,and <br /> vegetable ruin and grub out all large roots('/Z inch or greater diameter)to a depth of at least <br /> ` two feet below the footing elevation. The vegetable materials and all materials from the <br /> cleaning operation shall be removed from the site. If large areas are involved and the surface <br /> vegetation is sparse, disking in of the surface organic debris on the building pads may be <br /> ` permitted under the direction of the soil engineer. <br /> B. CONSTRUCTION OF FILL <br /> (1) Preliminary Operations <br /> After the cleaning and stripping operation and the cuts have been completed and <br /> before any fill is placed in any particular area,the existing surface shall be scarified <br /> to a depth of 6 inches and compacted to dry densities in excess of 90 percent of the <br /> ` maximum dry density as obtained by the Modified Compaction Test,ASTM DI 557, <br /> designation. It may be necessary to adjust the moisture content of the subgrade soil <br /> by watering or aeration, to 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 consist of sandy silts, sands, or <br /> ., sands and gravels unless stated otherwise in the report. Engineered fill material shall <br /> not contain rocks greater than 3 inches in greatest dimension and should be <br /> nonexpansive in nature with a plasticity index less than 12. <br /> At least seven days prior to the placement of any fill, the engineer shall be notified <br /> of the source of materials and samples shall be obtained to determine the suitability <br /> of the materials and for conducting laboratory compaction test on these samples. <br /> r <br /> ir. <br /> 'pE a,., <br /> � e'r®A <br />