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1 APPENDIX C <br /> HUMAN HEALTH SCREENING EVALUATION <br /> • BURNSPROPERTY <br /> 1887 PROPERTY,TRACY,CALIFORNIA <br /> ' PROJECT 45650 <br /> 0 <br /> ' INGESTION OF AND DERMAL CONTACT WITH non-VOCs in GROUNDWATER-Cancer <br /> Concentration <br /> ' Chemical Groundwater Permeability Oral Slope Excess Cancer <br /> Factor(SFo) Risk <br /> (Cw) Constant (Kp) <br /> (mg/L) (cm/hr) (mg/kg-d)'1 (—) <br /> Acenaphthene ND 0.09 NA NA <br /> Benzo(a)anthracene ND 0.81 1.2 ND <br /> Chrysene ND 0.81 0.12 ND <br /> ' Fluoranthene ND 0.36 NA ND <br /> Fluorene 0.0001 0.12 NA NA <br /> Naphthalene ND 0.069 NA NA <br /> Phenanthrene 0.0003 0.27 NA NA <br /> Pyrene ND 0.31 NA ND <br /> 0E+00 <br /> ' IRw.aduh X EF x EDadult <br /> Risk..., = SFo X C. x BW x AT x 365day/yr <br /> adwt <br /> + SF, x C. x IRw.child X EF x EDchdd <br /> BWchdd X AT x 365day/yr <br /> ' <br /> + SF. x C,, x SA adult x KP x EF x ED adult x ETadult X 1 01000 cm3 <br /> BWadult x AT x 365 days/yr <br /> ' <br /> + SF. x C W x SAchild x KP X EF X EDchild x ETchild X 1U1000 Cm3 <br /> BWchila x AT x 365 days/yr <br /> ' Parameter Symbol Values Units <br /> Exposure Frequency EFdw 350 d/yr <br /> Exposure Duration-adult EDar 24 yr <br /> ' <br /> Exposure Duration-child EDcr 6 yr <br /> Body Weight-adult BWar 70. k <br /> Body Weight-child BWcr 15 k <br /> Averaging Time-Cancer ATca 70 yr <br /> Intake Rate-adult IRwar 2 L/d <br /> Intake Rate-child IRwcr 1 L/d <br /> Skin Surface Area-adult SAswrar 23,000 cm` <br /> Skin Surface Area-child SAswrcr 7,200 cmz <br /> Exposure Time-adult ETar 0.25 hr/da <br /> ' Exposure Time-child ETcr 0.14 hr/da <br /> Conversion Factor from L to cm3 CFL,m3 0.001 L/cm3 <br /> ' bums\risk gw non-VOCs Page 9 of 18 <br />