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Cumulative Risk Worksheet <br /> Site Name:McDowell and Davis Towing,1360 Escalo Completed By:Robert Fourt,CEG!CHG <br /> Site Location:Escalon,San Joaquin County,CA Date Completed:121312002 1 OF 3 <br /> CUMULATIVE RISK WORKSHEET <br /> CONSTITUENTS OF CONCERN Representative Concentration Proposed CRF Resultant Target Concentration <br /> Surface Soil Subsurface Groundwater Subsurtace, burface Soil Subsurface Soil Groundwater <br /> CAS No. Name (mglkg) Soil (mglL) Surface Soil Soil GW (mglkg) (mg/kg) (mglL) <br /> 71-43-2 Benzene 1.0E-4 4.3E-1 4.6E-3 1.0E-4 4.3E-1 4.6E-3 <br /> 100-41-4 Eth lbenzene 1-0E-4 2.6E+1 4.0E-3 1.0E-4 2.6E+1 4.0E-3 <br /> 1634-04-4 Meth I t-Butyl Ether 1.0E-4 4.4E+1 1.0E-4 1.0E-4 4.4E+1 1.0E-4 <br /> 108-88-3 1 Toluene 1.0E-4 fi.OE+1 9-5E-3 1.0E-4 6.0E+1 9.5E-3 <br /> 1330-20-7 X lene mixed isomers 1.0E-4 2.0E+2 8-8E-3 1.0E-4 2.0E+2 8.8E-3 <br /> Cumulative Values: Cumfive kf Goals Exceeded? <br /> ■ Yes ❑ No <br /> Software: GSI RSCA Spreadsheet eriat G491-EFX-872 <br /> O Groundwater Services,Inc.(GSI),19951997. All Rights Reserved. Version: 1.0.1 <br /> �d <br /> I <br />