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r r [ r r t r C r r f r r r r r C r C <br /> RSCA SITE ASSESSMENT <br /> Tter 2 Worksheet 8.2 <br /> Site Name:McDowell and Davis Toyining. 136 Site Location:Escalon San Joaquin Coun!Y.CA Completed By:Robert Fourt CEG 1 CHG Date Completed:5/12/2002 4 OF 4 <br /> TIER 2 PATHWAY RISK CALCULATION <br /> CARCINOGENIC RISK TOXIC EFFECTS <br /> (2)Total Carcinogenic (3)Oral (4)Individual COC (5)Total Toxicant (6)Oral (7)Individual CDC <br /> (1)EPA Intake Rate(mglkglday) Slope Factor Risk(2)x(3) Intake Rate(mg/kglday) Reference Dose Hazard Quotient(5)1(6) <br /> Carcinogenic On-Site Off-Site off-site Off-Site <br /> Constituents of Concern Classification Commercial "-1 Commercial Commercial m -da Commercial <br /> Benzene A 1.2E-7 2.9E-2 3.6E-9 <br /> Eth (benzene D 3.3E-6 1.0E-1 3,3E-5 <br /> Methyl t-Butyl Ether 3.7E-5 5.0E-3 7.4E-3 <br /> Toluene D 1.1E-9 2.0E-1 5.6E-9 <br /> Xylem mixed isomers D 1.8E-4 2.0E+0 8.9E-5 <br /> Totat Pathway Carcinogenic Risk= 0.0E+0 3.6E-9 Total Pathway Hazard Index= 0.0E+0 7.6E-3 <br /> Software: GSI RBCA Spreadsheet Serial:G491-EFX-s72 <br /> 0 Groundwater Services,Inc,(GSI),1995-1997.All Rights Reserved, Version: 1,0.1 <br />