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APPENDIX C <br /> HUMAN HEALTH SCREENING EVALUATION <br /> POMBO PROPERTY <br /> 1755 WEST 11TH STREET,TRACY,CALIFORNIA <br /> PROJECT#5650 <br /> INHALATION OF VOCs in GROUNDWATER-Cancer <br /> Concentration Inhalation Excess Cancer <br /> Chemical Groundwater Slope Factor Risk VOCs <br /> (Cw) (SFi) <br /> (mg/L) (mg/kg-d)-' (--) <br /> Eth (benzene ND NA ND <br /> Toluene ND NA ND <br /> Xylenes,Total ND NA ND <br /> Acenaphthene ND NA ND <br /> Benzo(a)anthracene ND 0.39 NA <br /> Chrysene ND 0.039 NA <br /> Fluoranthene ND NA NA <br /> Fluorene 0.0002 NA NA <br /> Naphthalene ND NA ND <br /> Phenanthrene 0.0003 NA NA <br /> Pyrene ND NA NA <br /> 0E+00 <br /> SF, x C,, x IRVOC.em x EF x ED.dle <br /> Riskvo,�, — Riskw,p,+ <br /> BW,,,,, x AT x 365 days/yr <br /> SF, x C. x IRv,chw x EF x ED.hnd <br /> BWmae x AT x 365 days/yr <br /> Parameter Symbol Values Units <br /> Exposure Frequency EF 350 d/yr <br /> Exposure Duration-adult EDar 24 yrs <br /> Exposure Duration-child EDcr 6 yrs <br /> Body Weight-adult BWar 70 k <br /> Body Weight-child BWcr 15 k <br /> Averaging Time-Cancer ATca 70 yrs <br /> Intake Rate-adult IRvocar 2 IJd <br /> Intake Rate-child IRvoccr 1 IJd <br /> pombo\risk gw VOCs Page 10 of 18 <br />