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Soil Boring Logs University of the Pacific . 1081 W. Mendocino Avenue Stockton, California Shaded interval indicates depth of sample recovered for laboratory analysis LOG OF SOIL BORING TP-2 Notes Depth Soil Descnption + Interval (ft) ",/000 to 2 Base material for asphalt surface consisting of compacted gravel with fines and underlying reworked Logged and sampled clayey fill material by PBH, Water sampling by CXS 2 to 4 Brown Clayey Silt [ML] with low plasticity,damp, very stiff to hard, contains occasional gravel and fine sand (Representative of native material outside former UST pit excavation) 4 to 8 Brown Clayey Silt[ML], contains occasional gravel and fine sand, damp, very stiff to hard, low plasticity, some light-colored mottling Depth to groundwater while drilling Very 8 to 12 Brown (yellow-red) Clayey Silt[ML],fine sand and moist fine grained varying clay fraction,moist, stiff to very stiff, low plasticity, occasional light-colored mottling material, no saturation I8 feet 12 to vt6 Brown- red Clayey Silt[ML], fine sand and varying Water rose in boring to clay fraction,moist, very stiff to hard, low plasticity approx 15 feet, 3 Moisture increases with depth Soil sample at 13 5 to hours after drilling 14 feet and 15 5 to 16 feet 16n to 20 Brown-red Sandy Silt [ML] and Silty Sand [SM] (gradational with depth), fine sand and varying clay fraction,moist, very stiff, moderate plasticity Groundwater sampled Saturated soil conditions at+/- 18 feet Soil sample Hydro-punch set for from 19 5 to 20 feet groundwater sampling at 24 feet 20 to j4 Brown Silty Sand [SM],fine sand and with varying clay fraction,moist, very stiff, moderate plasticity Bottom of Boring 24 Moisture increased but no obvious saturated zone due feet to tight clayey silt Soil sample from 23 5 to 24 feet