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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 AND NON-VOCS IN AIR FROM SOIL-Cancer <br /> Inhalation <br /> Chemical Concentration Slope Factor Excess <br /> Air (Ca) (SFi) Cancer Risk <br /> (m /m') (mg/kg d)-1 (__) <br /> Eth (benzene 7.6E-04 NA NA <br /> Toluene 3.4E-03 NA NA <br /> Xylenes,Total 1.6E-03 NA NA <br /> Acenaphthene 3.4E-05 NA NA <br /> Benzo a anthracene 6.5E-09 0.39 3.8E-10 <br /> Clarysene 2.7E-08 0.039 1.6E-10 <br /> Fluoranthene 4.9E-09 NA NA <br /> Fluorene 3.0E-05 NA NA <br /> Naphthalene 1.8E-04 NA NA <br /> Phenanthrene 2.6E-07 NA NA <br /> Pyrene 1.4E-08 NA NA <br /> 5E-10 <br /> IR.dmi x PF x ED.dmi <br /> Risk,;, = S$ x Cs x BW,d,i, x AT x 365days/yr <br /> IR.,mie x EF x ED,,,,,+ SF, x C, x BW,Fdd x AT x 365 day/yr <br /> Parameter Symbol Values Units <br /> Exposure Frequency EFa 350 days <br /> Exposure Duration-adult EDar 24 yrs <br /> Exposure Duration-child EDcr 6 YM <br /> Body Weight-adult BWar 70 k <br /> Body Weight-child BWcr 15 k <br /> Averaging Time-Cancer Arca 70 yrs <br /> Inhalation Rate-adult IRaar 20 an 3/d <br /> Inhalation Rate-child IRacr 10 m3/d <br /> pombolrisk ah Page 15 of 18 <br />