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ENGEO <br /> INCORPORATED <br /> <br /> <br />5150.100.101 <br />May 2, 2008 Page 16 <br />Jetting of backfill is not an acceptable means of compaction. We may allow thicker loose lift <br />thicknesses based on acceptable density test results or for the first lift of fill over pipe bedding. <br /> <br />6.6.3 Landscape Fill <br /> <br />Process, place and compact fill in accordance with Sections 4.5, expect to compact soils to at <br />least 85 percent relative compaction (ASTM D1557). <br /> <br />6.7 SLOPES <br /> <br />6.7.1 Gradients <br /> <br />Construct final slope gradients to 2:1 (horizontal:vertical) or flatter. The contractor is <br />responsible to construct temporary construction slopes in accordance with CALOSHA <br />requirements. <br /> <br />6.8 SITE DRAINAGE <br /> <br />6.8.1 Surface Drainage <br /> <br />The project civil engineer is responsible for designing surface drainage improvements. With <br />regard to geotechnical engineering issues, we provide the following minimum recommendation <br />for surface drainage. <br /> <br />1. Slope pavement areas at a minimum of 1 percent towards drop inlets or other surface <br />drainage devices. <br /> <br />2. Slope finished grades away from building exterior at a minimum of 2 percent for a distance <br />of at least 5 feet. <br />