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' APPENDIX A-16 <br /> HUMAN HEALTH SCREENING EVALUATION <br /> SURLAND HOMES PROPERTY <br /> TRACY,CALIFORNIA <br /> PROJECT 6447.007 <br /> FINAL <br /> ' RISK FOR AIR-Non-cancer <br /> ' Concentration Inhalation <br /> Chemical Air Non-cancer Average Daily Chronic Hazard <br /> Dose Reference Quotient <br /> (Ca) <br /> ' Dose(RfDi) <br /> (m m') (mg/kg-d) (mg/kg-d) (-) <br /> Eth ]benzene 2.0E-03 1.2E-03 0.29 4.3E-03 <br /> Toluene 4.1E-05 2.6E-05 0.11 2.4E-04 <br /> Xylenes,Total 4.1E-03 2.6E-03 2 1.3E-03 <br /> ' <br /> Acenaphthene 6.2E-05 4.0E-05 0.06 6.6E-04 <br /> Chrysene 1.7E-08 1.1E-08 0.03 3.5E-07 <br /> Fluoranthene 9.0E-10 5.8E-10 0.04 1.4E-08 <br /> Fluorene2.4E-OS 1.5E-05 0.04 3.8E-04 <br /> Phenanthrene 1.4E-07 8.9E-08 0.04 2.2E-06 <br /> 1Pyrene 4.0E-09 2.5E-09 0.03 8.4E-08 <br /> 7E-03 <br /> ' <br /> Hazard°" IRxEF xED_ (1/R1D,) x C. x BW x AT x 365 day/yr <br /> Parameter Symbol Values Units <br /> Exposure Frequency EFacr 350 days <br /> Exposure Duration EDcr 6 years <br /> Body Weight BWcr 15 k <br /> Averaging Time-Non-cancer Atnc 6 years <br /> Inhalation Rate IRacr 10 m' <br /> /d <br /> ' is\project\6000s\6447\6447.007\hra stand alone doc\pea risk for surland.xls Page 16 of 18 <br />