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f <br /> 15 ARCO AM/PM <br /> SERVICE STATION <br /> r i <br /> PRIVATE ROAD N <br /> I 0 30 60 <br /> i <br /> ' SCALE IN FEET <br /> MW-4 MW--3 <br /> EGEND <br /> ND<50 86 GROUNDWATER MONITORING WELL <br /> ND<D.50 ND_ . ND<0.50 ND<0.50 <br /> ND<0.50 ND<1.0 SERVICE ND<0.50 ND<1.0 TPH-G <br /> STATION a T CONCENTRATION OF CONSTITUENTS <br /> Li <br /> w E x IN MICROGRAMS PER LITER <br /> BUILDING z Z <br /> TOTAL PETROLEUM <br /> I I MW-7 TPN-G HYDROCARBONS AS GASOLINE <br /> L J DISPENSER I N0<50 e BENZENE <br /> ISLANDS r w 4.6 IND<0.50 T TOLUENE <br /> UNDERGROUND ND<0.50 ND<1.0 <br /> USED OIL TANKE ETHYLBENZENE <br /> Q x TOTAL XYLENES <br /> ND NOT DETECTED ABOVE REPORTED <br /> { --� MW- 2 DETECTION LIMIT <br /> U) <br /> 302000 0LB,6 MW-5 ? Ld CALCULATED GROUNDWATER <br /> I 62 48 16a © 003 GRADIENT DIRECTION AND <br /> 4LL4.00 I MAGNITUDE IN FOOT PER FOOT <br /> 4 113 1 1-1 I <br /> f � <br /> MW—I <br /> 1400 L-\--UNDERGROUND <br /> 110 ND<5.0 FUEL TANKS <br /> ND<5.0 1 5.1 <br /> PLANTER <br /> DRIVEWAY <br /> TRANSFORMER <br /> FIGURE 3 <br /> ONCENTRATIONS OF PETROLEUM <br /> YDROCARBONS IN GROUNDWATER <br /> JANUARY 16, 1996 <br /> P OIL SERVICE STATION NO. 11193 <br /> Mv�<5 202 WEST HAMMER LANE <br /> (—NE)<0.501 <br /> 0.50 ND<0.50 ' OCKTON, CALIFORNIA <br /> ND<1.0 ROJECT NO. 10-136 <br /> r n�ALISTO ENGINEERING GROUP <br /> WALNUT CREEK, CALIFORNIA <br /> 1 <br />