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i <br /> APPENDIX C <br /> HUMAN HEALTH SCREENING EVALUATION <br /> POMBO PROPERTY <br /> 1755 WEST IITH STREET,TRACY,CALIFORNIA <br /> PROJECT#5650 <br /> INGESTION OF AND DERMAL CONTACT WITH non-VOCs IN GROUNDWATER-Non-cancer <br /> Concentration Permeability Oral Chronic Hazard <br /> Chemical Groundwater Constant Reference <br /> (Cw) (Kp) Dose (RfDo) Quotient <br /> m cm/hr m -d <br /> Eth lbenzene ND 0.074 0.1 NA <br /> Toluene ND 0.045 0.2 NA <br /> Xylenes,Total ND 0.08 2 NA <br /> Acenaphthene ND 0.09 0.06 NA <br /> Benzo(a)anthracene ND 0.81 NA ND <br /> Chrysene ND 0.81 NA ND <br /> Fluoranthene NO 0.36 0.04 NO <br /> Fluorene 0.0002 0.12 0.04 NA <br /> Naphthalene ND 0.069 0.02 NA <br /> Phenanthrene 0.0003 0.27 0.3 8.1E-05 <br /> .03 <br /> Pyrene ND 0.31 0ND <br /> 8.1E-05 <br /> Hazard ) x Cw x IRw x EF x ED <br /> w = (t/RtD° + <br /> BW x AT x 365 day/yr <br /> Cw x SA x K° x ET x EF x ED x (IL1000cm') <br /> (1/RfD°) x BW x AT x 365 day/yr <br /> Parameter Symbol Value Units <br /> Exposure Frequency EF 350 d/yr <br /> Exposure Duration ED 6 YrS <br /> Body Weight BW 15 k <br /> Averaging Time-Non-cancer ATnc 6 YrS <br /> Intake Rate(water) IRw 1 Ud <br /> Surface Area SAswr 7200 can' <br /> Exposure Time ETcr 0.14 hr/d <br /> Conversion Factor-L to cm' CFI,,,,, 0.001 Ucm' <br /> pombo\HQ gw non-VOCs Page 1 l of 18 <br />