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APPENDIX C <br /> HUMAN HEALTH SCREENING EVALUATION <br /> • BURNSPROPERTY <br /> 1887 PROPERTY,TRACY,CALIFORNIA <br /> ' PROJECT#5650 <br /> 0 <br /> ' DERMAL CONTACT AND INCIDENTAL INGESTION OF SOIL-Cancer <br /> ' Chemical Concentration Absorption Oral Slope Excess Cancer <br /> Soil(Cs) Fractions Soil Factor(SFo) Risk <br /> (ABSds) <br /> ' (mg/kg) (—) (mgtkg-d)-' (--) <br /> Acenaphthene 0.94 0.15 NA NA <br /> Benzo(a)anthracene 0.13 0.15 1.2 6.8E-07 <br /> ' <br /> Chrysene 1 0.15 0.12 5.3E-07 <br /> Fluoranthene 0.17 0.15 NA NA <br /> Fluorene 3.7 0.15 NA NA <br /> Naphthalene 6.8 0.15 NA NA <br /> ' Phenanthrene 5.7 0.15 NA NA <br /> Pyrene 1 0.18 0.15 NA NA <br /> 1 E-06 <br /> Risk�;l SF. X CS X ad <br /> IRS_ ult x EF x EDadult X 10.6 kg/mg <br /> = <br /> lieBWadult x AT x 365 days/yr <br /> + SF. x Ca x IRa.,hdd x EF x ED.hild X 106 kg/mg <br /> BW°h;ld x AT x 365 days/yr <br /> SAad�lt x AF x ABS x EFadult x EDadult X 10-6 kg/mg <br /> + SF, x CS x BW adult X AT x 365 days/yr <br /> ' <br /> + SF x C x SA�h;ld X AF x ABS x EFh;ld x ED.hild X 10'6 kg/mg <br /> ° 5 BW,hild x AT x 365 days/yr <br /> 1 <br /> Parameter Symbol Values Units <br /> Exposure Frequency-ingestion EFig 350 d/yr <br /> ' <br /> Exposure Duration-adult EDar 24 yrs <br /> Exposure Duration-child EDcr 6 yrs <br /> Body Weight-adult BWar 70 k <br /> ' <br /> Body Weight-child BWcr 15 k <br /> Averaging Time-Cancer ATca 70 yrs <br /> Ingestion Rate-adult IRsar 100 m d <br /> ' <br /> Ingestion Rate-child IRscr 200 m d <br /> Exposure Frequency-dermal <br /> contact/adult EFdc 100 d/yr <br /> ' Exposure Frequency-Dermal <br /> contact/child EFdc 350 d/yr <br /> • Surface Area-adult SAsar 5800 cm2 <br /> ' Surface Area-child SAscr 2000 cm2 <br /> Soil-to-Skin Adherence Factor AF 1 mg/cm2 <br /> Conversion Factor from mg to kg CFm .k 1E-06 kg/mg <br /> burns\risk soil Page 13 of 18 <br />