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Tier 2 Worksheet 8.1 <br /> I <br /> RBCA SITE ASSESSMENT <br /> r <br /> Site Name:McDowell and Davis TovAng, 1360 Escalon Site Location:Escalon San Joaquin County,CA Completed By:Robert Fourt CE Date Completed:5!1212002 4 OF 9 <br /> TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION <br /> SUBSURFACE SOILS: Exposure Coneenlntlon <br /> VAPOR INTRUSION TO BUILOMGS 1)Source Medium 2)NAF Valu 31k 3)Exposure.Medium 4)Exposure Multiolier 5)Average Dailif111tak Rate <br /> Receptor Mdm AY:POE Cmre.(mgW3)(1)1(2) (IRxEFxED)ryBWxAT) (m-3 -dsy) (-Og-d.4(3)x(4) <br /> Subsurface Soil Cone <br /> Constituents of Concern m Oo-Slta Cnmmerclal On-SPoe C—erdal Or Ste Commercial On,lM Commerdal <br /> Benzene 4,3E-1 1.0E+2 4.1 E-3 7.0E-2 2.9E-4 <br /> Eth lbenzene 2.6E+1 1.0E+2 2.4E-1 2.0E-1 4.8E-2 <br />' Met I t-But I Ether4.4E+1 1.0E+2 4.1E-1 2.0E-1 8.1E-2 <br /> i Toluene 6.0E+1 1.0E+2 5.7E-1 2.0E-1 1JE-1 <br /> E-1 <br /> Xylene mixed isomers 2.0E+3 1.0E+2 1.9E+1 2.0E-1 3.7E+0 <br /> NOTE: ABS=Dermal absorption factor{dim) BW=Body weight(kg) EF=Exposure frequencey(dayslyr) POE=Point of exposure <br /> i AF=Adherence factor(mg1cm^2) CF=Units conversion factor ET=Exposure time(hrsfday) SA=Skin exposure area(cW21day) <br /> I AT=Averaging time(days) ED=Exposure duration(yrs) IR=Inhalation rate JW31day) <br /> Software-GSI RBCA Spreadsheet Serial: G-491-EFX-872 <br /> ®Groundwater Services,Inc.(GSI),1995-1997.All Rights Reserved. Version. 1.0.1 <br /> i <br /> pM <br /> P <br /> I <br /> I <br />