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I °� uw Project No: 06-6102-00-4926-301 Page 1 of 2 <br /> An E1npbHw-C4ned CbmPwY <br /> PROJECT: TRACY BYRON ROAD <br /> Log of Boring NSB-8 <br /> Tracy,California <br /> BORING LOCATION: N 2096489.8970,E 6279735.0010 ELEVATION AND DATUM: US State Plane NAD 83 Zone 3 <br /> DRILLING CONTRACTOR: Gregg Drilling and Testing,Inc. DATE STARTED:/TIME: DATE COMPLETED:/TIME: <br /> 10/22/03 8:35 10/22/03 11:00 <br /> TOTAL DEPTH(ft.): MEASURING POINT: <br /> DRILLER: Bob Deason 281 Ground Surface <br /> DEPTH TO WATER(ft.): 14' <br /> DRILLING METHOD: Direct Push Continuous <br /> TIME: <br /> DRILLING EQIUPMENT: Marl M5 T Rhino Rig GEOLOGIST:Will Slowik <br /> SAMPLING METHOD: Macrocore,Stainless Bailer REVIEWED BY: <br /> SAMPLES U <br /> _ U) DESCRIPTION <br /> j E o a a Q NAME(USCS):color,moist, %by wt.,plast.and density. <br /> O o- o o E-o w <br /> °D U) O U Surface Elevation: NA <br /> Road Base to 1.5'bgs. <br /> 1 <br /> o Boring hand cleared to 5'bgs. <br /> 2 CL Native Material observed to be clay during borehole clearance. <br /> 3 <br /> 4 <br /> 5 <br /> SB-8--8-6 CL Lean Clay with Sand(CL);yellowish brown(10yr5/4);moist;medium plasticity; <br /> 8 80-85%clay,15 20/o fine sand. <br /> 6 <br /> 0.3 <br /> 7 <br /> No recovery from 7-8'bgs. <br /> 9 <br /> 0.3 ML Silt with Sand(ML);brown(10yr4/3);moist;low plasticity;70%silt,20%fine <br /> sand,10%fine to coarse gravel. <br /> 10 <br /> 0.0 <br /> 11 <br /> ML Same as above,gravel decreases. <br /> 50 SB-8-12 <br /> 8:50 12 <br /> 0.0 13 <br /> 14 <br /> SB-8-15 SM Silty Sand(SM)o dark yellowish brown(10yr4/4);saturated;60-65%fine to very <br /> fine sand,35-40%silt. <br /> 9:00 15 <br /> No recovery from 15-16'bgs. <br /> 3.7 16 <br /> ML Silt with Sand(ML);dark gray(10yr4/1);saturated;75-80%silt,20-25%fine <br /> sand;moderate petroleum odor. <br /> 17 <br /> 18- <br /> 0.0 <br /> 19 No recovery from 18.5-24'bgs. <br /> 20 <br /> NOTES: Groundwater sample GW-8 collected @ 10:45. <br />