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Inwood 10 LLC <br />Project B14-08413 <br />December 3, 2014 <br />Page 7 <br />In areas where clays would comprise a majority of the fill where grades are raised or where there are <br />significant grade raises placed upon clay, the thickness of clay placed may need to be restricted to limit <br />the amount of post-construction settlement which occurs from the excavation backfill compressing <br />under its own weight. Usually fills on the order of 5 to 10 feet can be accommodated within a <br />construction schedule provided the transition is gradual. <br />Once the final design, grades, and locations of each structure are determined, our evaluation should be <br />finalized. This final evaluation may revise or provide additional recommendations and may include <br />additional field exploration utilizing soil borings or test pits. <br />D.1.Site Grading and Building Pad Preparation <br />D.1.a.Excavations <br />To prepare the building pads, encountered organic topsoil, very loose sands, and soft clays should be <br />removed and replaced. The following tabulation outlines the anticipated depths needed at the boring <br />locations to remove the topsoil and possible loose or soft soils. <br />Table 1. Anticipated Excavation Depths of Building Pads <br />Soil Boring <br />Approximate Surface <br />Elevation <br />Anticipated Depth of <br />Excavation <br />(Feet) <br />Anticipated Bottom of <br />Excavation <br />(Elevation) <br />ST-1 1030.7 1 1030 <br />ST-2 1019.9 1 1019 <br />ST-3 1011.5 1 1010 1/2 <br />ST-4 1003.6 1 1002 1/2 <br />ST-5 1005.1 1 1004 <br />ST-6 1005.5 1 1004 1/2 <br />ST-7 1012.7 1 1011 1/2 <br />AET 1 1008.5 9 999 1/2 <br />AET 2 1019.6 4 1015 1/2 <br />AET 3 1021.4 2 1019 <br />AET 4 1015.8 2 1013 1/2 <br />AET 5 1019.9 4 1015 1/2 <br />AET 9 1020.5 2 - 4 1018 1/2 - 1016 1/2