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TABLE 15 <br /> CANCER TOXICITY DATA—INHALATION <br /> NORTH SHORE PROPERTIES <br /> CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY <br /> Chemical Weight of Evidence`/ <br /> of Potential Inhalation Cancer Cancer Guideline <br /> Concern° <br /> Slope Factor° Units Descri tion Source° Date <br /> Styrene _ ATES Nov-94 <br /> Tetrachloroethene 2.1 E-02 (mg/kg-day) <br /> Trichloroethene 1.0E-02 (m g/kg- Y)da B2-C Cal/EPA Nov-94 <br /> 1,2,4-Trimethyl benzene <br /> 1,3,5-Trimethyl benzene <br /> Vinyl acetate N/A N/A <br /> Semivolatile Organic Compounds <br /> N/A N/A D IRIS May-99 <br /> Anthracene <br /> Nov-94 <br /> Benzo(a)anthracene 3.90E-01 m da 1 B2 Cal/EPA <br /> Benzo(a)pyrene t;�g" Y) <br /> 3.90E+00 (m da 1 B2 Cal/EPA Nov-94 <br /> Benzo(b)fluoranthene 3.90E-01 ( gig- Y)m da 1 B2 Cal/EPA Nov-94 <br /> Benzo(g,h,i)perylene N/A N/A D IRIS May-99 <br /> 3.90E-01 (mg/kg-day)-' B2 Cal/EPA Nov-94 <br /> Benzo(k)fluoranthene <br /> .90E-02 m da ' BZ Cal/EPA Nov-94 <br /> 3 <br /> Chrysene ( Pig Y) <br /> D IRIS May-99 <br /> Diethylphthalate N/A NSA D Ing Feb-1993 <br /> Di-n-butylphthalate N/A Y <br /> D IRIS <br /> Ma 99 <br /> Fluoranthene N/A NSA D IRIS May-99 <br /> Fluorene N/A <br /> 3.90E-01 m da 1 B2 Cal/EPA Nov-94 <br /> Indeno(1,2,3-cd)pyrene ( Sig" Y) <br /> 2-MethylnaphthaleneN/A N/A D IRIS May-99 <br /> Naphthalene N/A D IRIS May-99 <br /> Phenanthrene NIA <br /> Notes: <br /> a Includes all chemicals of potential concern at the City of Stockton North Shore Properties. <br /> b Listed Slope factor is the highest of the values from the sources listed in footnote C. <br /> c Carcinogenic weight-of-evidence is a qualitative designation for potential carcinogens. <br /> d Slope factors from IRIS(EPA 1998b),HEAST(EPA 1997b),NCEA ys listed in EPA 1998b,and Cal/EPA(1994b). <br /> N/A Not applicable <br /> ATES Air Toxicology and Epidemiology Section,Office of Environmental Health Hazard Assessment,Cal/EPA <br /> CaVEPA California Environmental Protection Agency <br /> IRIS Integrated Risk Information System <br /> (mg/kg-day). V(milligrams per kilogram per day) <br /> R Route-to-route extrapolation. <br /> Not available <br /> EPA Group: <br /> A-Human carcinogen <br /> B I-Probable human carcinogen-indicates that limited human data are available <br /> B2-Probable human carcinogen-indicates sufficient evidence in animals and inadequate or no evidence in humans <br /> C-Possible human carcinogen <br /> D-Not Classifiable as to human carcinogenicity <br /> 12/9/99 <br /> Page 2 of 2 <br /> SOMA 992218 <br />