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r <br /> RBCA SITE ASSESSMENT <br /> Tier 2 Worksheet 8 1 <br /> Sde Name Formeer Racal 603 Site Location 6425 Pacific Aenue Stockton CA Completed By George Convers Dale Completed 10/1511998 2 OF 9 <br /> TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION <br /> OUTDOOR AIR EXPOSURE PATHWAYS ! (CHECKED IF PATHWAY IS ACTIVE) <br /> SUBSURFACE SOILS VAPOR Exposure Caocenfralext <br /> uurtALAnoR 1)Source M!,dlum 2))IAE Value[m"3lkal 3)Exposure Medium 4)measure Mulllpher 5)Average Daily Intake Rate <br /> Receptor OutdowM POE Cox (myiO3)(1)1(2) (IR.EFxEDy(SMAT) I.3lkp-day) (-Ol7 day)I3l x(4) <br /> Subsurface Soli Conc <br /> Constituents of Concern (m.0q) On Sde Commdaal Ofl-Sde Rasidenhal On Site Commercial OlrSde Resicimbal Oh Sde Commerpel CIMSde Rnideneal On Sit*Cnmmeraan Off-84e Reuden9al <br /> Benzene 5 OE 3 1 1E+4 9 8E+4 4 GE-7 5 1E 8 7 OE-2 1 2E-1 3 2E-8 6 OE 9 <br /> Eth lhenzene 1 8E 1 1 2E+4 9 6E+4 1 5E-5 1 8E 6 2 OE-1 2 7E-1 2 9E-6 5 OE 7 <br /> Hexane n 8 7E+1 1 1E+4 9 5E+4 8 OE-3 8 8E4 2 0E-1 2 7E-1 i 6E-3 2 4E-4 <br /> Methyl 11-Butyl Ether 5 OE 2 2 8E+4 2 1E+5 1 BE-6 2 3E 7 2 OE 1 2 7E-1 3 5E-7 6 4E-8 <br /> Toluene 5 OE 3 1 8E+4 1 4E+5 2 7E-7 3 6E 8 2 OE 1 2 7E 1 5 3E 8 9 9E-9 <br /> Xylene mixed Isomers 1 7E+0 3 3E+4 2 5E+5 5 1E-5 fi 7E-6 2 OE 1 2 7E 1 9 9E-6 1 8E-6 <br /> I <br /> NOTE ABS M Dermal absorption factor(dim) BW=Body weight(kg) EF=Exposure frequencey(dayslyr) POE=Point of exposure <br /> AF=Adhesance factor(mglcrnA2) CF=Units conversion factor ET=Exposure tome(hrslday) SA=Skin exposue area(cmA21day) <br /> rr� AT=Averaging time(days) ED=Exposure duration(yrs) M=Inhalation rate(W31day) <br /> I' <br /> ISoftware GSI R8CA Spreadsheet Senal G-443-CSX-444 <br /> 0 Groundwater Services Inc {GSI) 1995 1997 All Rights Reserved Version 1 0 1 <br />.E <br /> i <br /> l <br />