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ATTACHMENT 5 <br /> HUMAN HEALTH SCREENING EVALUATION <br /> POMBO PROPERTY <br /> 1755 WEST 11TH STREET,TRACY,CALIFORNIA <br /> PROJECT#7243.001 <br /> 95%UCL;GROUNDWATER NOT POTABLE. <br /> INGESTION,DERMAL CONTACT,AND INHALATION OF VOCs in GROUNDWATER-Cancer <br /> Concentration Inhalation <br /> Oral Slope Excess Cancer <br /> Chemical Groundwater Slope Factor <br /> (CW)I Factor(SFo) (SF'i) Risk VOCs <br /> (mg1L) (mg/kg-dY' (mg/kg-d)" (--) <br /> Benzene ND 0.1 0.1 ND <br /> Eth (benzene ND NA NA ND <br /> Toluene ND NA NA ND <br /> Xylenes,Total ND NA NA ND <br /> Acenaphthene ND NA NA ND <br /> Benzo(a)anthracene ND 1.2 0.39 ND <br /> Ch sere ND 0.12 0.039 ND <br /> Fluoranthene ND NA NA ND <br /> Fluorene ND NA NA ND <br /> Naphthalene ND NA NA ND <br /> Phenanthrene ND NA NA ND <br /> Pyrene ND NA NA ND <br /> 0.0E+00 <br /> SF xC xIR xEFxIDaduk <br /> C. voc.,.., <br /> RiskvocWaY� = Riskwa,��+ BWadul, x AT x 365days/yr <br /> SF, x C. x IRv(,,,,,d x EF x ED,,�, <br /> + <br /> BW,,, x AT x 365 days/yr <br /> Parameter Symbol Values Units <br /> Exposure Requency FrequencyEF 350 d/yr <br /> Exposure Duration-adult EDar 24 yrs <br /> Exposure Duration-child EDcr 6 yrs <br /> Body Weight-adult BWar 70 k <br /> Body Weight-child BWcr 15 kg <br /> Averaging Time-Cancer ATca 70 yrs <br /> Intake Rate-adult IRvocar 2 Ud <br /> Intake Rate-child IRvoccr 1 Ud <br /> pombo_based on UCLs\risk gw VOCs Page 10 of 18 <br />