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The thickness of the organic soil deposit within the <br />northern portions of the building ranges from 4 to 5.2 feet. <br />Standard penetration test resistances within the peat <br />range From 1 to 5 blows per foot. This soil is sort, spongy, <br />weak and potentially compressible. It is totally unsuitable for <br />foundation or floor slab support. <br />Lake- DeRosited SancJs <br />Commencing at a depth of 6.5 to 9 feet below present gr <br />is a rnajer sand deposit of varying gradation, Included in this <br />soil deposit is silty fine to coarse sand, silty fine to medium <br />sand, and silty fine sand with random seams of fine sandy silt <br />and clayey silt. Standard penetration teat values within the <br />sands vary from 3 to 28 blows per foot, and generally tend to <br />increase with depth. The uppermost few feet of the sands are <br />loose, but they become medium dense with depth. <br />The silty sand soils have low to moderate load- bearing <br />capacity and low compressibility, and are good foundation sub- <br />soils. <br />Des Moines Clayey Glacial Till <br />Strata of clayey glacial till were encountered at Test <br />Holes 1, 4 and 6. This .soil consists of dark grey sandy clay, <br />and grey sandy silt with traces of clay. The plastic portions o <br />the Des Moines clay till have a tough consistency; the non -plas <br />portions are medium dense. They have good load- bearing capacity <br />and are suitable foundation subsoils. <br />GROUND WATER CONDITIONS <br />Free ground water was encountered at all 6 borehole•,q• 1 <br />J'r3 R z EA <br />rcxrl \rxsl t V{i INC. <br />MI NN <br />MINNEAPOLIS, <br />de, <br />is <br />