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L <br /> SUBSURFACE SOIL AND GROUNDWATER CONDITIONS <br /> ' The following paragraphs of this section present a general view <br /> Of subsurface soil conditions at the site. Detailed descriptions <br /> ' of site soils encountered at each test boring are presented on <br /> the Boring Logs Plates A-1 through A-6. <br /> In summary, the subsurface soils encountered at the site are <br /> described as loose fill to a depth of 15 feet below existing <br /> grade in test boring TB-l. Some gasoline odor was encountered in <br /> ' this fill. Olive brown to brown silty clay was encountered below <br /> the fill and to a depth of 26 feet. Interbedded silty sands, <br /> ' silty clays and sandy silts were encountered below the brown <br /> silty clays and to a maximum depth explored of 41. 5 feet. <br /> The subsurface soils encountered in test boring TB-2 are <br /> described as black to brown sandy silt to a depth of 3 feet below <br /> existing grade. From a depth of 3 feet to 11. 5 feet below <br /> existing grade, brown silty clay was encountered. <br /> Loose fill was encountered in test boring TB-3 to a depth of 6 <br /> feet below existing grade. Dark yellow brown to olive brown <br /> clayey to sandy silts dere encountered below the fill to a depth <br /> ' of 36 feet below existing grade. Underlain the silts is a <br /> brown veryfine gray <br /> grained clayey sand to a depth of 40 feet below <br /> grade. <br /> ' Groundwater was not observed in an of <br /> y the test borings at the <br /> time of our field investigation. However, the groundwater <br /> ' conditions at this site are anticipated to fluctuate in the <br /> future due to factors such as seasonal rainfall, groundwater <br /> ' pumping and recharging, seepage conditions and construction <br /> activities. However, the influence of these factors could not be <br /> determined at the time of our investigation. <br /> 3 <br />