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APPENDIX C <br /> HUMAN HEALTH SCREENING EVALUATION <br /> POMBO PROPERTY <br /> 1755 WEST 11TH STREET,TRACY,CALIFORNIA <br /> PROJECT#5650 <br /> INGESTION,DERMAL CONTACT AND INHALATION OF VOCs IN GROUNDWATER-Non-cancer <br /> Concentration Oral Chronic Inhalation <br /> Chemical Groundwater Permeability Reference Chronic Hazard <br /> (Cw) Constant (Kp) Dose(RID.) Reference Quotient <br /> Dose(RfDi) <br /> (mg/L (cm/hr) (m -d) m /k -d <br /> Eth (benzene ND 0.074 0.1 0.29 NO <br /> Toluene ND 0.045 0.2 0.11 NO <br /> Xylenes,Total ND 0.08 2 2 NO <br /> Acenaphthene NO 1 0.09 0.06 1 0.06 NO <br /> Benzo(a)anduacene ND 0.81 UNANA NA <br /> C Bene NO 0.81 NA <br /> Fluoranthene NO 0.36 NA <br /> Fluorene 0.0002 0.12 6.8E-04 <br /> Na hthalene NO 0.069 86 ND <br /> Phenanthrene 0.0003 0.27 NA <br /> P ene NO 0.31 NA <br /> 6.8E-04 <br /> ) CW x IRW x EF x ED <br /> Hazard" = (1/RCD° x BW x AT x 365 day/yr <br /> CW x IRWvoc x EF x ED <br /> (1/RtD,) x + <br /> BW x AT x 365 day/yr <br /> CW x SA x K' x ET x EF x ED x (IUIOOOcm') <br /> (I/RfD°) x BW x AT x 365 days/yr <br /> Parameter Symbol Value Units <br /> Exposure Frequency EF 350 d/yr <br /> Exposure Duration ED 6 YM <br /> Body Weight BW 15 k <br /> Averaging Time-Non-cancer ATnc 6 YM <br /> Intake Rate(water) IRw #REP! Ud <br /> Intake Rate(inhalation) IRvoc I Ud <br /> Exposure Time ET 0.14 hr/d <br /> Surface Area SAswr 7200 cm' <br /> Conversion Factor-L to cm' CF,,° , 0.001 L/cm' <br /> pomboVHQ gw VOCs Page 12 of 18 <br />