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TABLE 9 <br /> NON-CANCER REFERENCE DOSES <br /> US CAN—WELTY ROAD <br /> 35275 Welty Road <br /> Vernalis, California <br /> Oral RID Inhalation RfD <br /> COPC in Soil (mg/kg-day) Source (mg/kg-day) Source <br /> BTEX <br /> Benzene 4.0E-03 IRIS 1.70E-02 OEHHAI <br /> Toluene 8.0E-02 IRIS 8.6E-02 OEHHAI <br /> Eth lbenzene 1.0E-01 IRIS 5.7E-01 OEHHAI <br /> Total Xylenes 2.0E-01 IRIS 2.0E-01 IRIS <br /> PAHs <br /> Acenaphthene 6.0E-02 IRIS 6.0E-02 MIS2 <br /> Acenaphthylene NA IRIS NA IRIS <br /> Anthracene 3.0E-01 IRIS 3.0E-01 IRIS <br /> Benzo(a)anthracene NA IRIS NA IRIS <br /> Benzo(a)pyrene NA IRIS NA IRIS <br /> Benzo(b)fluoranthene NA IRIS NA IRIS <br /> Benzo(g,h,i)perylene NA IRIS NA IRIS <br /> Benzo(k)fluoranthene NA IRIS NA IRIS <br /> Chrysene NA IRIS NA IRIS <br /> Dibenz(a,h)anthracene NA IRIS NA IRIS <br /> Fluoranthene 4.0E-02 IRIS 4.0E-02 IRIS <br /> Fluorene 4.0E-02 IRIS 4.0E-02 IRIS <br /> Indeno(1,2,3-c,d)pyrene NA IRIS NA IRIS <br /> 2-methylnaphthalene 3 4.0E-03 IRIS 4.0E-03 IRIS <br /> Naphthalene 2.0E-02 IRIS 2.6E-03 OEHHAI <br /> Phenanthrene NA IRIS NA IRIS <br /> Pyrene 3.0E-02 IRIS 3.0E-02 IRIS2 <br /> Abbreviations: <br /> Cal/EPA=California Environmental Protection Agency <br /> COPC=Constituent of potential concern <br /> EPA=United States Environmental Protection Agency <br /> IRIS=Integrated Risk Information System <br /> kg=Kilogram <br /> m3=Cubic meter <br /> m3/day= Cubic meter per day <br /> mg=Milligram <br /> NA=Not available or not applicable <br /> OEHHA=Office of Environmental Health Hazard Assessment <br /> PAHs=Polynuclear aromatic hydrocarbons <br /> PEA=Preliminary Endangerment Assessment <br /> REL=Reference Exposure Level <br /> RfD=Reference Dose <br /> µg =Microgram <br /> Notes: <br /> 1. Chronic REL converted to Rfl)by multiplying REL(µg/m3)by(1 mg/1,000µg*20 M3/day* 1/70 kg). <br /> 2. Consistent with PEA Guidance Manual,if no inhalation RfD was available the oral RfD was used. <br /> 3. RfD for 2-methylnaphthalene used to evaluate both 1-methylnaphthalene and 2-methylnaphthalene <br /> Sources: <br /> IRIS information from the EPA on-line database(May 2011). <br /> OEHHA information from the Cal/EPA on-line Toxicity Criteria Database(May 2011). <br /> Page 1 of 1 SAIC <br />