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Table 6 Comparison of Maximum Ground Water Concentrations and Risk-Based Screening Levels for Ground Water , <br /> 1325 and 1515 West Weber Avenue, Stockton, California <br /> Industrial Worker Scenario <br /> Maximum Risk-Based <br /> Concentration* Screening Level t <br /> Constituent (µg/1) (µgA) <br /> Benzene 1.22E+03 5.5E+03 <br /> Toluene 1.42E+02 1.7E+07 <br /> Ethylbenzene 1.58E+02 5.3E+07 <br /> Xylenes 3.82E+02 3.8E+07 x } <br /> 1,2-Dichloroethane 2.40E+01 1.5E+04 <br /> 1,3,5-Trimethylbenzene 3,93E+03 3.2E+05 <br /> 1,2,4-Trimethylbenzene 1.55E+02 4.2E+05 <br /> Construction Worker Scenario <br /> Maximum Risk-Based <br /> Concentration* Screening Level <br /> Constituent (µg/1) <br /> Benzene 1.22E+03 6.5E+06 <br /> Toluene w - 1.42E+02 8.2E+08 <br /> Ethylbenzene 1.58E+02 >1E09 <br /> _. Xylenes: _e_._. 3.82E+02 _ >1E09' <br /> 1,2-Dichloroethane 2.40E+01 1.6E+07 <br /> 1,3,5-Trimethylbenzene 3.93E+03 1.5E+07 <br /> 1,2,4-Trimethylbenzene 1.55E+02 2.0E+07 <br /> Notes, <br /> *From Table 6 of the Closure Report,1325 and 1515 West Weber Avenue,Stockton,California(ERM,1999). <br />