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• • <br /> Tier 2 Worksheet 8.1 <br /> Site Name:Formeer R29al 603 Site Location:6425 Pacific Aenue,Stockton Completed By:Roy Butler. Date Cam lete&7/1011998 3 OF 9 <br /> TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION <br /> OUTDOOR AIR EXPOSURE PATHWAYS ■ CHECKED tF PATHWAY IS ACTIVE) <br /> TOTAL PATHWAY INTAKE 4.9ftday) <br /> GROUNDWATER!VAPOR E.posure ConcentralkM <br /> INHALATION 1)Source Med um 21 RAF Value tm"31L] 31 Froosure Medium 4)Exposure iAUlholier 5)Average Daily Intake_Rate (sum rnr.w.vara.,rro.r..fax., <br /> Receptor Ould.m Air:POE Cm .(rncVm"3)(1)1(2) (IR.EF.EOy(BW.AT) (m•31kiTdaY) (mWkg day)43)x(4) auba W..A grour dwarer ra 4.j <br /> Groundwater Conc. <br /> Constituents of Concern m t on.Sde eommeraal On-Silo Commercial Orvsde commercial On-Site Commercial On Sile Commercial On-sik Residential <br /> Benzene 4 4E-2 2.4E+5 ].9E-7 7.0E-2 1,3E-8 4.5E-8 6.0E-9 <br /> Eth (benzene 3.1E-1 2.3E+5 1.3E-6 2.0E-1 2.6E-7 3.1E-6 5.0E-7 <br /> Hexane n- 1.0E+1 8.4E+3 1.2E-3 2.0E-1 2.4E-4 1-8E-3 2.4E-4 <br /> Methyl I-Butyl Ether 6.1E-2 1.7E+5 4.8E-7 2.0E-1 9.4E-8 4.4E-7 6.4E-8 <br /> Toluene 4 9E-1 2.4E+5 2.0E-6 2.0E-1 4,0E-7 4.5E-7 9.9E-9 <br /> Xylene mixed isomers 2.2E+0 2.6E+5 L 8.3E-6 2.0E-1 1.6E-6 4.7E-5 8.3E-6 <br /> NOTE: ABS r Dermal absorption radar(dim) BW=Body weight(kg) EF=Exposure frequencey(dayslyr) POE=Point of exposure <br /> AF=Adherance factor(mglcmA2) CF=Units conversion factor ET=Exposure time(hrslday) SA=Skin exposure area(CMA21day) <br /> AT=Averaging time(days) ED=Exposure duration(yrs) IR=inhalation rate(mA31day) <br /> Software:GS1 RBCA Spreadsheet Serial:G443-CSXA44 <br /> ®Groundwater Services,Inc.(GSI),1995.1997.All Rights Reserved. Version: 1.0.1 <br /> 1 <br />