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Page 7 - #120-11872 Foundation Recommendations It is our opinion that the proposed building can be supported on spread foot- ing foundations. We recommend excavating the entire building area of all existing uncontrolled fill, topsoil and soft cohesive soils. We also recom- mend removing the upper 1' to 2' of controlled fill that has been softened by weathering. After the unsuitable soils have been remove!, we recommend placing a controlled, compacted fill to floor elevation. The foundations can then be supported on the controlled fill or natural soil at minimum ele- vation. Where foundations are supported on compacted fill, the excavation and compacted fill should extend beyond the edge of the footings a distance equal to the depth of compacted fill beneath the footings. We recommend compacting this fill to a minimum of 98% of standard Proctor density. We do root recommend utilizing the topsoil or fine alluvial soils for the con- trolled fill. The glacial till or coarse alluvial soils encountered in the higher portion of the site may be used for the controlled fill. It may be necessary to import some granular soils for the initial portion of the fill where the exposed subgrade is wet or where there is water seepage. It should be noted, however, that use of cohesive soils for controlled fill does require very close control of the moisture content. We recommend designing the foundations for a loading of up to 3000 psf. The fill or natural soil will provide a factor of safety of about 3. We estimate settlement will be less than 1". SOIL exMORation