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ARCO AM/PM i <br /> SERVICE STATION <br /> `I <br /> , <br /> PRIVATE ROAD <br /> 0 30 60 <br /> I <br /> SCALE IN FEET <br /> LEGEND <br /> 0 GROUNDWATER MONITORING WELL <br /> MW-Q. SERVICE I TPH-G <br /> NOT SAMPLED STATION �MW-3 B T CONCENTRATION OF CONSTITUENTS <br /> F NOT SAMPLED z W 1N MICROGRAMS PER LITER <br /> BUILDING I Z <br /> I R � � MTBE <br /> t TPr�-c TOTAL PETROLEUM <br /> L J DISPENSER HYDROCARBONS AS GASOLINE <br /> ISLANDSlyj W MW-7 B BENZENE <br /> UNDERGROUND m NOT SAMPLED T TOLUENE <br /> USED OIL TANK u ILII E ETHYLBENZENE <br /> Q <br /> = X TOTAL XYLENES <br /> MW-6 H- MTBE METHYL TERT BUTYL ETHER <br /> ND<NE a NOT DETECTED ABOVE REPORTED <br /> MW-2 0.02 ND<0.5 ND<1.0 j W ND <br /> 2¢00 "DG1Ivo<io<10 DETECTION LIMIT <br /> 1 73010 CALCULATED GROUNDWATER <br /> I 4174 <br /> 20100 ' 0.D2 GRADIENT DIRECTION AND <br /> o I <br /> MW-1 <br /> MAGNITUDE IN FOOT PER FOOT <br /> _ _ � <br /> ND<50 <br /> ND<0.5 I ND<1.0 UNDERGROUND ' <br /> ND<1.0 I ND<1.0 <br /> ND<10 FUEL TANKS I <br /> PLANTER { <br /> DRIVEWAY <br /> ORNE'NAY <br /> TRANSFORMER <br /> , <br /> FIGURE 3 <br /> CONCENTRATIONS OF PETROLEUM <br /> HYDROCARBONS IN GROUNDWATER <br /> SEPTEMBER 22, 1997 <br /> i <br /> BP OIL SERVICE STATION NO. 11193 <br /> MW-6 I 13202 WEST HAMMER LANE <br /> ND<50 I STOCKTON. CALIFORNIA <br /> ND<C.5 I ND<1.0 + <br /> NIX 1.a ND<1.0 + PROJECT NO. 10-136 <br /> ND<10 <br /> 0 <br /> ALISTO ENGINEERING GROUP w <br /> WALNUT CREEK, CALIFCRNW o <br /> I <br />