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APPENDIX A-14 <br /> HUMAN HEALTH SCREENING EVALUATION <br /> SURLAND HOMES PROPERTY <br /> ' TRACY,CALIFORNIA <br /> PROJECT 6447.007 <br /> FINAL <br /> ' DERMAL CONTACT AND INCIDENTAL INGESTION OF SOIL-Non-cancer <br /> ' Chemical Concentration Absorption Oral Chronic Hazard Reference <br /> Soil(Cs) Fractions Soil Average Daily Quotient <br /> (ABSds) Dose Dose(RfDo) <br /> ' m - (mg/kg-d (mg/kg-d - <br /> Eth (benzene 1.5 0.1 3.8E-05 0.1 3.8E-04 <br /> Toluene 0.04 0.1 1.0E-06 0.2 5.1E-06 <br /> ' <br /> Xylenes,Total 3.9 0.1 1.0E-04 2 5.0E-05 <br /> Acenaphthene 0.63 0.15 2.0E-05 0.06 3.4E-04 <br /> Chrysene 0.33 0.15 1.1E-05 0.03 3.5E-04 <br /> ' Fluoranthene 0.018 0.15 5.8E-07 0.04 1.4E-05 <br /> Fiuorene 1.4 0.15 4.5E-05 0.04 1.1E-03 <br /> Phenanthrene 2.8 0.15 8.9E-05 0.04 2.2E-03 <br /> jPyrene 0.079 0.15 2.5E-06 1 0.03 8.4E-05 <br /> 5E-03 <br /> Hazard,;, _ (I/RfDo) x C x IR, x EF x ED x 104 kg/mg <br /> BW x AT x 365day/yr <br /> + (1/RfD.) x C, x SA x AF x ABS x EF x ED x 10 kg/mg <br /> BW x AT x 365 days/yr <br /> Parameter Symbol Values Units <br /> Expo e Frequency-ingestion EFig 350 d/yr <br /> Exposure Duration ED 6 yrs <br /> Body Weight BW 15 k <br /> t <br /> Averaging Time-Non-cancer ATnc 6 yrs <br /> Ingestion Rate IRs 200 m d <br /> Surface Area SAs 2000 cmZ <br /> Soil-to-Skin Adherence Factor AF 1 Mg/CM2 <br /> Exposure Frequency-dermal contact EFdc 350 d/yr <br /> Conversion Factor from mg to kg CF. -k 1E-06 kg/mg <br /> ' is\project\6000s\6447\6447.007\ua stand alone doc\pea risk for surland.xls Page 14 of 18 <br />