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- ARCO AM/PM _ _ - <br /> SERVICE STATION <br /> PRIVATE ROAD <br /> 0 30 60 <br /> SCALE IN FEET <br /> MW-3 LEGEN510D <br /> ND<0.5I D<1,0 ii� GROUNDWATER MONITORING WELL <br /> ND<1.0 ND<1.0 <br /> MW-4 SERVICE 590 TPH-G CONCENTRATION OF CONSTITUENTS <br /> NOT SAMPLED STATION z w + IN MICROGRAMS PER LITER <br /> F -1 BUILDING Z MTBE <br /> a_ TPH-G TOTAL PETROLEUM j <br /> HYDROCARBONS AS GASOLINE <br /> L J DISPENSER B BENZENE <br /> ISLANDS w MW-7 <br /> T TOLUENE <br /> NOT SAMPLED <br /> UNDERGROUND <br /> USED OIL TANK ¢ E ETHYLBENZENE <br /> 2 i X TOTAL XYLENES <br /> MW--5 MTBE METHYL TERT BUTYL ETHER <br /> 50 <br /> MW-2 3.2 D<ND<1.0 <br /> Ld <br /> NOT DETECTED ABOVE REPORTED <br /> i 69120001.8 N OND<N0D<1.0 p ND DETECTION LIMIT <br /> I I ND<114 7.7 CALCULATED GROUNDWATER <br /> 4 i 14000 Q.Q05 GRADIENT DIRECTION AND <br /> MAGNITUDE IN FOOT PER FOOT <br /> M'w—1 L _ 0 <br /> 3000 � S <br /> ND<0.5 ND<1.0 UNDERGROUND <br /> ND<1.0 I ND<1.0 FUEL TANKS <br /> 3500 <br /> pLANTER <br /> D WEWAY <br /> pRNE`N AY <br /> TRANSFORMER <br /> FIGURE 3 <br /> CONCENTRATIONS OF PETROLEUM <br /> HYDROCARBONS IN GROUNDWATER <br /> SEPTEMBER 18, 1998 <br /> BP OIL SERVICE STATION NO. 11193 R <br /> MW-6 3202 WEST HAMMER LANE <br /> 50 STOCKTON, CALIFORNIA <br /> ND<0.5 ND<1.D m <br /> ND<1.0D<1.y0l PROJECT NO. 10-136 <br /> 74 r <br /> I - <br /> ALISTO ENGINEERING GROUP <br /> WALNUT CREEK. CALIFORNIA a <br />