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RBCA TIER I OUTPUT DATA <br /> ?able III 4 <br /> Site Name Exxon 7-0137 Completed By JCI <br /> Site Location Stockton CA Date Completed 8/2212000 1 OF r <br /> Target Risk(Class A 8 B) t OE-6 © MCL exposure lima? Calculation option 2 <br /> GROUNDWATER RBSL VALUES Target Risk(Class C)i 0E 5 ❑ PEL expastire limit? <br /> Target Hazard Quotient 1 nE+ll <br /> RBSL Results For Complete Exposure Pathways(""x""if Complete) <br /> Representative RBSL <br /> Concentration Groundwater Volatilization Groundwater Volatilization Applicable Exceeded <br /> CONSTITUENTS OF CONCERN I Groundwater Ingestion X I to Indoor Air X I to Outdoor Air RBSL ? Regwred CRF <br /> Residential Commercial Regulatory(MCL) Residential Commercial Residential Commercial <br /> CAS No Name (mg1L) (on site) (on site) (on site) (off site) (off site) (off site) (on sde) (mglL If yes Only if yes left <br /> 71-43-2 Benzene 1 7E-3 NA NA NA 7 OE-3 NA 3 1 E+0 NA 7 OE-3 ❑ <1 <br /> 100-41-4 Eth (benzene <0 0005 NA NA NA 7 7E+1 NA >Sol NA 7 7E+1 ❑ <1 <br /> 1634-04-4 MTBE 1 3E-3 NA NA NA 8 7E+2 NA >Sol NA 8 7E+2 ❑ <1 <br /> 108-88-3 Toluene <0 0005 NA NA NA 3 3E+1 NA >Sol NA 3 3E+1 ❑ <1 <br /> 1330-20-7 X lene mixed isomers <0 0005 NA NA NA >Sol NA >Sal NA >Sol ❑ <1 <br /> ?Sol indicates nsk based target concentration greater than constituent solubility <br /> Software GSI RSCA Spreadsheet Serial G 273 IBX 894 <br /> ®Groundwater Services Inc (GSI) 1995-1997 All Rights Reserved Version 10 1 <br /> I <br /> I <br />