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0 <br /> I <br /> �BCA SITE ASSESSMENT <br /> Tier 2 Worksheet 8 2 <br /> Site Name Formeer Regal 603 Site Location 6425 Pacific Aenue Stockton CA Completed By George Converse Date Com feted 10/15/1998 1 OF 4 <br /> TIER 2 PATHWAY RISK CALCULATION <br />, <br /> OUTDOOR AIR EXPOSURE PATHWAYS ■ CHECKED IF PATHWAYS ARE ACTIVE <br /> CARCINOGENIC RISK TOXIC EFFECTS <br /> (2)Total Cammogenic (3)Inhalation (4)Individual COC (5)Total Toxicant (6)Inhalation (7)Indrv,dual COC <br /> (1)EPA InlaAe Rate(mg/kg/day) Slope Factor Risk(2)x(3) Intake Rate(mglkgfday) Reference Dose Hazard Ouotmnl(5)1(6) <br /> Carcinogenic OnSde Off-Site On Site Off Site On Site On Site On Site OST Site <br /> Constituents of Concern Classification Commermat Residential rk da ^1 Commercial Residential Commercial Residential m -da Commercial Res,dentiaf <br /> 1 Benzene A 3 4E-8 116 OE-9 2 9E-2 9 BE-10 1 7E-10 9 SE 8 1 4E-8 1 7E-3 5 6E-5 8 2E-6 <br /> Eth Ihenzene D 31E-6 50E-7 29E-1 1 1E-5 1 BE-6 <br /> Hexane n- 1 7E-3 2 4E4 5 7E-2 2 9E-2 4 2E 3 <br /> Meth t t Butyl Ether 3 6E-7 6 4E-8 8 BEA 4 4E-7 7 SE-8 <br /> Toluene D 1 OE-7 9 9E-9 1 IE-1 8 8E-7 8 6E-8 <br /> Xylene mixed isomersi D 1 0E-5 1 8E-6 1 2 OE+0 1 5 2E 6 9 2E-7 <br /> r <br /> Tota!Pathway Carcinogenic Risk W 9 8E-10 1 7E-10 Tata!Pathway Hazard Index= 2 9E 2 4 3E 3 <br /> 1 <br /> I Software GSI RSCA Spreadsheet Senal G•443JCSX444 <br /> fF C Groundwater Services Inc (GSI) 1995-1997 All Rights Reserved Version 1 0 1 <br /> f <br /> I <br /> I <br /> Ir <br />' t <br /> 1 <br /> 1 <br /> 7 <br /> i <br />