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NORTH SHORE <br /> PROJECT STOCKTON HOUSING <br /> AND REDEVELOPMENT DEPARTMENT Log of Boring 16B-8 <br /> Stockton California PAGE 1 OF 1 <br /> Boring location See Site Plan, Figure 2 <br /> Date started 1114104 Date finished 1114104 Logged by D WidemannDrilled By Precision <br /> Drilling method Direct Push <br /> Hammer weight/drop 250 lbs Hammer type Hydraulic <br /> Sampler Acetate(soil)&Bailers(GVV) <br /> x SAMPLES E <br /> wSample a it a o MATERIAL DESCRIPTION <br /> ❑ .� Number za <br /> 1ss a- J <br /> Asphalt Surface Conditions <br /> 1 <br /> SAND(SV11) <br /> 2 brown, moderately dense,dry sub-angular to angular,well graded, no odor <br /> 3 SW <br /> 4 <br /> CLAY(CL) <br /> 5 50 20 CL dark brown, medium stiff dry slightly plastic no odor <br /> s <br /> SILT(ML} <br /> 7 yellow brown, medium stiff dry slightly plastic no odor <br /> 8 <br /> 9 100 <br /> 10 ss <br /> strong odor and olive gray discoloration <br /> 11 110 <br /> 12 500 <br /> 13 125 <br /> 580 <br /> 14 <br /> soil becomes moist <br /> 15 ,84 <br /> 15 155 ML <br /> 77 Driller says difficult material to get through but after 19 feet easy to push through <br /> 18 Q groundwater has hydrocarbon sheen <br /> 19 <br /> 20 <br /> No samples recovery from 16 to 25 feet <br /> 21 <br /> 22 <br /> 23 <br /> 24 <br /> s <br /> 25 <br /> 25 <br /> 27 <br /> 2s <br /> 2s <br /> 30 <br /> � 8onng terminated at 25 feet below ground surface <br /> z Boring backfilled owithun cement grout �� � <br /> o Groundwater encountered at a depth of 1810 feet <br /> during drilling Protect iVo Figure <br /> 259710 A-4 <br />