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Page 9 - #120-11872 Beneath all floor slabs, we recommend providing a minimum of 6" of free - draining granular soil immediately below the floor slab. Pavement Recommendations We understand the drives and parking areas will be constructed of bituminous pavement. The west portion of the building area will be in a cut area while the majority of the paved areas will be in filled areas. Based on the borings, it is anticipated that the soil exposed in the cut areas will prob- ably be a sandy clay or clayey sand glacial till. Since this soil will probably be used for the controlled fill in the parking areas, we are basing our pavement recommendations on a clayey subgrade soil. For subgrade preparation, the topsoil layer should be removed. In the areas that will require more than 3' of fill, only the upper portion of the top- soil containing sod, roots or other organic material should be removed. Except for the topsoil and the fine alluvial soils, it is our judgment that the site soils can be used for fill in the paved areas. The clay soils should be placed at or near the optimum moisture content in order to achieve proper compaction and stability. We suggest that the fill required in the paved areas be compacted to a minimum of 95% of the maximum density determined by the standard Proctor. The upper 3' of fill should be compacted to 98% of this standard. Final subgrade preparation should be done in accordance with Mn/DOT (Minnesota Department of transportation) Specification 2112. The final subgrade preparation should be done after any unstable areas have been corrected. SOIL eXPLORation ,Y