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LEGEND <br /> TPH-G ND <br /> TPH-D ND AW-12 Ground water monitoring well <br /> B ND <br /> T ND <br /> TPH-G Dissolved-phase hydrocarbon <br /> E ND TPH-v <br /> X ND a concentrations(ppb) <br /> NT <br /> LEPRINO FOODS E <br /> 0 rx ] <br /> Z <br /> SCALE(FEET) <br /> TPH-GND <br /> TPH-D ND <br /> RESIDENTIAL X B ND <br /> T NO <br /> ND <br /> C—x—X—X X—X— EX- <br /> x ND <br /> TPH-G ND <br /> TPH-D ND <br /> B ND TPH-G ND <br /> T M TPH-D ND TPH-G ND <br /> E ND B NO TPH-D ND <br /> X —MJ T ND B K0 <br /> E ND T ND <br /> EAST GRANTLINE ROAD x ND E ND <br /> TPH-G ND X ND <br /> TPH-D ND <br /> 8 1.5 TPH-G' ND <br /> T ND TPH-D ND <br /> TPH-G ND E OZ8 B i ND <br /> TPH-G ND TPH-D 92 X ND T ND <br /> TPH-D 120 B 0.54 1 - <br /> E-- 8 ND T NDE ND <br /> T ND E ND X—X- x----XX-1- unj <br /> RAILROAD TiUCKS E ND x ND I <br /> X NELJ <br /> NOTES: FORMER UNDERGROUND <br /> FORMER <br /> GASOLINE STORAGE ABOVE-GROUND <br /> Hydrocarbon concentrations are based on TANK <br /> DIESEL STORAGE <br /> results of laboratory analysis of ground Water x TANKS <br /> samples collected April 2, 1993. x TPH-G ND <br /> ND=not detected at detection limits stated in TPH-D 63 I DISSOLVED-PHASE <br /> official Laboratory Reports. I 11 NO X HYDROCARBON <br /> TPH-G=total petroleum hydrocarbons as I T ND CONCENTRATIONS <br /> E ND <br /> gasoline;TPH-D=total petroleum X ND TPH-G ND April 2, 1993 <br /> hydrocarbons as diesel;B=benzene; <br /> ———————- TPH-D ND <br /> T=tollueno-,E=athylbenzene;X=total TPH-GNO I I B ND Former Mobil Bulk Plant 04-343 <br /> xylenes;ppb=parts per billion. TPH-D i ND iORMER T NE) 500 East Grantline Road <br /> B ND BFUILDING E ND <br /> T ND —————— — x ND Tracy, California <br /> I <br /> L x <br /> ALTON E ND <br /> GEOSCIENCE W <br /> FIGURE 4 <br /> A% Pleasanton, Cardomia <br /> 30-0136 5/18/93 <br /> J <br />