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TABLE 3-1 <br /> TOXICITY VALUES FOR THE CHEMICALS OF CONCERN <br /> SHOP 10 MAINTENANCE STATION,CALTRANS <br /> STOCKTON, CALIFORNIA <br /> Reference Dose (RfD) Slope Factors(SF) <br /> m da11 m da <br /> Chemicals of Concern Oral RfD Inhalation RfD Oral SF Inhalation SF <br /> Benzene 3 00E-03 1 70E-03 1 OOE-01 1 00E-01 <br /> 1,2-Dichloroethane NA 2 9E-030 91 E-02 91 E-0 <br /> Eth (benzene 1 00E-01 2 86E-01 NA NA <br /> Toluene 2 OE-01 1 1E-01" NA NA <br /> Meth -tert-b I-ether 1 2E-01 8 6E-014 NA 4 3E-04 <br /> X Ienes 2 00E+00 2 OOE-01 NA NA <br /> Notes <br /> 1 DTSC Cancer Potency Factors, Apnl 1996 <br /> 2 EPA Region IX PRG Table of toxicity factors <br /> 3 EPA HEAST Tables, 1998 <br /> 4 EPA IRIS1999 <br /> 5 EPA Region IX PRG Table of toxicity factors indicates value was withdrawn <br /> 6 DTSC, 1997 <br /> C1CALTRANSISHOP101REPORTITABLE5-1 DOC <br /> 1 <br />