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ri n <br /> N <br /> HAMMER LANE <br /> r <br /> _ 0 15 70 <br /> PLANTER7 SCALE IN FEET <br /> PLANTER <br /> I <br /> I I <br /> I <br /> MW-3 <br /> 920 <br /> 80 ND<0.5 PUMP ISLANDS n <br /> ND<0.51 1 .0 <br /> MW-2 1 <br /> 1500 I <br /> 3200 1 120 C <br /> 540 1 710 rn <br /> 4rri <br /> I 4 <br /> SERVICE STATION I <br /> BUILDING <br /> 6000 <br /> 450 41 <br /> 17118 <br /> UNDERGROUND <br /> MW-4 OF- - <br /> 7 FUEL TANKS <br /> 140 L - <br /> ND<0.51ND<0.5 UNDERGROUND <br /> ND<0.51ND<0.5 USED OIL TANK <br /> LEGEND <br /> $ GROUNDWATER MONITORING WELL <br /> TPH-G FIGURE 3 <br /> B T CONCENTRATION OF CONSTITUENTS <br /> IN PARTS PER BILLION CONCENTRATIONS OF PETROLEUM <br /> TPH-G TOTAL PETROLEUM HYDROCARBONS IN GROUNDWATER <br /> HYDROCARBONS AS GASOLINE <br /> B BENZENE OCTOBER 5, 1993 <br /> T TOLUENE Bp OIL SERVICE STATION NO. 11193 <br /> E ETHYLBENZENE 3202 WEST HAMMER LANE <br /> X TOTAL XYLENES STOCKTON, CALIFORNIA Y <br /> ND NOT DETECTED ABOVE REPORTED DETECTION LIMIT PROJECT N0. 10-136 <br /> CALCULATED GROUNDWATER <br /> GRADIENT DIRECTION AND ALISTO ENGINEERING GROUP <br /> MAGNITUDE IN FOOT PER FOOT WALNUT CREEK, CAUFORNlA <br /> 0 <br />