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The subsurface geology at the subject property. is illustrated in the soil boring profiles shown on <br /> Figure 5. The profiles were developed using subsurface data from the SPT borings. Based on <br /> these data, a layer of fill and four subsurface units, or strata, were identified at the site. These <br /> units are described below: <br /> Fill SAND FILL, variably colored, fine-grained quartz, local minor concrete <br /> fragments USCS classification�= SP <br /> Stratum 1 SAND, variably colored, fine-grained quartz <br /> USCS classification= SP <br /> Stratum 2 CLAYEY SAND and SANDY CLAY, variably colored, locally mottled, <br /> variably sandy and clayey, fine-grained quartz <br /> USCS classification = SC, CH <br /> Stratum 3 SAND, SAND with clay, and CLAYEY SAND, variably colored, <br /> interbedded fine-grained quartz, local minor clay, minor limestone <br /> fragments USCS classification= SP, SP-SC, SC <br /> Stratum 4 LIMESTONE, variably colored, variably indurated <br /> Strata 2 and 3 comprise a sequence of interbedded sandy and clayey soils. Localized narrow <br /> zones of very soft soils (weight-of-rod/hammer) were encountered from 43'/2 to 45'/2 feet and <br /> 53'/z to 55 feet below grade in boring SPT-1, 33'/z to 35 feet, 43'/2 to 46'/2 feet, and 47'/2 to 50 feet <br /> below grade in boring SPT-2, and 38'/2 to 40 feet below grade in boring SPT-4. In borings SPT-1 <br /> and SPT-2, these very soft soil zones occurred in the lower portion of Strata 2 and 3. In boring <br /> SPT-4,the very soft zone occurred within the limestone formation. <br /> During drilling, losses of drilling fluid circulation were recorded at depths of 43'/z feet below <br /> grade in boring SPT-1, 33 feet below grade in boring SPT-2, and 58 feet below grade in boring <br /> SPT-3. In borings SPT-1 and SPT-2, the circulation losses were associated with very soft soil <br /> zones. In boring SPT-3, the circulation loss occurred within the upper portion �f the limestone <br /> formation. The water table was not encountered in the SPT borings prior to the introduction of <br /> drilling fluid into the borings at a depth of 10 feet below grade. <br /> :S��bsrcie��ce (n�.esiig�tic,�� BCl Pr�i��ctNe�. O�-3�63� <br /> (�€-ar��e �losse;r� RaEzc�l� ,�ssor.,ia;io�� i�,e�r��>o�-ate� /���x�i; �£}10 <br /> �? - jF�� k°t��<.��f <br /> «it?; ;. f�<��e t� <br />