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N <br /> HAMMER LANE <br /> _- 0 15 39 <br /> PLANTER SCALE IN FEET <br /> PLANTER <br /> I <br /> MW-3 'R� <br /> 12 13ND<0.5 PUMP ISLANDS <br /> ND<0.5 1 .5 <br /> MW-2 <br /> 1900 <br /> 400113 <br /> I UNDERGROUND 56 79 m <br /> FUEL TANKSrn <br /> f z <br /> 1 <br /> SERVICE STATION } <br /> BUILDING MW-1 <br /> 8700 <br /> 460 240 <br /> 57 600 <br /> MW-4 Or <br /> 100 L - <br /> ND<0.5 ND<0.5 UNDERGROUND <br /> ND<0.5ND<0.5 _USED OIL TANK <br /> LEGEND <br /> $ GROUNDWATER MONITORING WELL <br /> TPH-G FIGURE 3 <br /> B T CONCENTRATION OF CONSTITUENTS <br /> E X IN PARTS PER BILLION CONCENTRATIONS OF PETROLEUM <br /> TPH-G TOTAL PETROLEUM HYDROCARBONS IN GROUNDWATER <br /> HYDROCARBONS AS GASOLINE JANUARY 7, 1994 <br /> B BENZENE <br /> T TOLUENE BP OIL SERVICE STATION NO. 11193 <br /> E ETHYLBENZENE 3202 WEST HAMMER LANE ' <br /> X TOTAL XYLENES STOCKTON, CALIFORNIA <br /> N0 NOT DETECTED ABOVE REPORTED PROJECT NO. 10-136 <br /> DETECTION LIMIT <br /> CALCULATED GROUNDWATER <br /> GRADIENT DIRECTION AND ALISTO ENGINEERING GROUP <br /> MAGNITUDE IN FOOT PER FOOT WALNUT CREEK, CALIFORNIA <br />