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W MM mob = = M r M M Mir M <br /> RBCA SITE ASSESSMENT <br /> Tier 2 Worksheet 8 2 <br /> Site!Jame Table3-6 Site Location 500 feet Completed BY Denise Clendenina Date Completed 1/111999 4 OF 4 <br /> TIER 2 PATHWAY RISK CALCULATION <br /> �R Ikl]ff+O�iil� ('YI V$ v, r ■ fCFOKMI'F PATMiIfAYS RS`i3�rEf <br /> CARCINOGENIC RISK TOXIC EFFECTS <br /> (2)Trial Carcinogenic (3)Dral (4)Individual COC (5)Total Toxicant (R)Oral (7)Individual COC <br /> (1)EPA Intake Rate(mglkglday) Slope Factor Risk Ri x(3) Intake Rate(mglkglday) Reference Daae Hazard Quotient(5)1(6) <br /> Carcinogenic OR-Sda OlfSde OR-Site ONSito <br /> Cansftento of Concern Classrfica Resrderrdal 1 Residential Residential m da Residential <br /> Benzene A 2 3E-35 1 IDEA 2 3E-36 5 4E-35 3 OE-3 1 SE-32 <br /> Chloroform B2 1 BE42 61 E-3 i 1 1E44 4 2E42 1 OE-2 4 2E-40 <br /> Dichktroethane 1,2- B2 7 4E-38 91 E-2 6 7E39 <br /> FNbenzene D 6 9E-38 1 OE-1 6 9E-37 <br /> Meth t-8 Lffid Ether 2 6E-35 1 2E-1 2 2E34 <br /> Na hthalene 0 2 8E-89 4 QE-3 7 OE-87 <br /> Styrene 1 2 5E-91 2 OE-1 1 3E-90 <br /> Tetrachloroethene C-B2 5 3E-53 5 2E-2 2 8E-54 i 2E-52 1 OE-2 1 2E-50 <br /> Toluene D 1 3 6E-40 2 OE-1 1 8E39 <br /> X enc mixed isomersD 1 1 4 SE-46 1 2 OE+O 2 4E-46 <br /> i <br /> Total Pathway Carclno8enk Risk st 0 0E+0 2 3E-3S Total Pathway Hazard lndox s 0 0E+0 1 GE-32 <br /> Software GSI RIBCA Spreadsheet Sona G-313-ZOX 798 <br /> O Groundwater Services Inc (GS} 1995-1997 All Rights Reserved Version 10 1 <br />