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Project: Bridgestone/Firestone Stockton Log of Boring MWA <br /> Project Location: 400 North EI Dorado Street <br /> Sheet 1 of 1 <br /> A" Project Number: 11STO-6C <br /> , Date{s} 8120/2001 Logged A.Drummond B Checked J.Gwinn <br /> Dri Iled BY y <br /> Drilling Lr Method h Drill B <br /> Direct Pusit 2-inch-OD direct push of Total Borehole <br /> 25. 0 feet <br /> Size/Type <br /> DrillingSurface <br /> Drill Rig Geoprobe 5400 Contractor Vivonex Elevation 13 feet MSL(est.] <br /> Tp <br /> Type <br /> Groundwater First i Completion i Development Sampling 4-ft-tong Macro-Core TopofElevation asing Not surveyed <br /> Level(feet bgs) 22 16.4 - Method <br /> Diameter of i Diameter of Type of Screen <br /> Hole(inches) 2 i Well(inches) 314 Well Casing 314-inchilia.Schedule 40 PVC Perforation 0.010-inch slot <br /> Type ofRMC 2112 Lonestar filter pack Type and Depth Hydrated bentonite chips 9-12 feet,bentonite grout 1-9 feet <br /> Sand Pack of Seal(s) <br /> Comments Elevation is approximated from USGS topo map. Samples collected in 3-to 4-ft-long acetate liners. <br /> SAMPLES y <br /> U Y <br /> 1U <br /> O O OO U O <br /> t m ° MATERIAL DESCRIPTION V E o a REMARKS <br /> a. n cn —E m ) � Cn <br /> a c o <br /> u,w o° a o ° �Uij (GoUo �L <br /> =d ma 15(14 <br /> 0 e Concrete 5 inches thick Core 8-inch-dia.hole <br /> z Dark brown,CLAYEY SILT(ML)with gravel;no staining, through concrete, <br /> no odor 0900 then hand auger to <br /> 4 ft below grade. <br /> +� PID reading in <br /> 1 D operator breathing <br /> zone(QBZ)=0.0 ppm. <br /> ' 0.0 0925 Start advance with <br /> direct push. <br /> LU 5 <br /> MW-4-6 Becomes reddish brown,with no gravel 0.0 0.0 0940 OBZ=0.0 ppm <br /> 5 No recovery from <br /> [No recovery] sampler 8-12 ft; <br /> formation too tight to <br /> extract from acetate. <br /> 10 OBZ=0.0 ppm <br /> 0950 <br /> a <br /> r`. <br /> MW-4-14 0.0 0.0 0955 0BZ=0.0 ppm <br /> 15 <br /> Moist,reddish brown SILTY SAND(SM);no staining, <br /> LM <br /> no odor <br /> MW-4-18 0.0 0.0 1000 OBZ=0.0 ppm <br /> W <br /> 20 Wet,reddish brown,poorly graded SAND with silt(SP•SM) <br /> fine-grained;no staining,no odor <br /> MW-4-227 :az2 1005 <br /> r� o <br /> N -10 <br /> a With gravel <br /> MW-4-25 <br /> 0.0 0 1015 <br /> W <br /> 25 Bottom of boring measured at 25.0 feet <br /> of <br /> ' m <br /> AR <br /> t"` u 15 <br /> �I <br /> Z <br /> O <br /> 0 30 <br /> 1++ c <br /> 0 <br /> m <br /> �� N ORION ENVIRONMENTAL INC. <br />