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MEMO <br /> Tier 2 Worksheet 9.3 <br /> Site Name:Country Club Completed By:Stephen Alton,R.E.A. <br /> Site Location:Stockton,CA Date Completed:71811998 1 OF 1 <br /> Target Risk(Class A&8) t.DE-8 ■ MCL exposure limit? Calculation Option: 2 <br /> GROUNDWATER SSTL VALUES Target Risk(Class C) 1.0E-5 © PEL exposure limit? <br /> Target Hazard Quotient 1.0E+0 - <br /> SSTL Results For Complete Exposure Pathways("a"if Complete) <br /> Representative SSTL <br /> Concentration Groundwater Volatilization Groundwater Volatilization Applicable Exceeded <br /> CONSTITUENTS OF CONCERN Groundwaler Ingestion X to Indoor Air X to Outdoor Air SSTL ? Required CRF <br /> Re5iden4al: Commercial. Regulatory(MCQ: Residential: Commercial: Residential Commercial: <br /> CAS No. Name (ml (on-site) {on-sire) (on-site) (on-site) (on-silo) ton-site) (on-site) (ml "■"If yes Only if' es'left <br /> 71-43-2 Benzene 6.7E+0 NA NA NA NA 5.4E-2 NA 4.9E+0 5.4E-2 ■ 1.2E+02 <br /> 100-41-4 Eth (benzene 1.4E+0 NA NA NA NA >Sol NA >Sol >Sol ❑ <1 <br /> 1634-04-4 Meth l t-But I Ether 8.9E-1 NA NA NA NA 6.5E+3 NA >Sol 6.5E+3 ❑ <1 <br /> 108-86-3 Toluene 1.3E+0 NA NA NA NA 2.1E+2 NA >Sol 2.1E+2 ❑ <1 <br /> 1330-20-7 X lene mixed isomers 5•0E+0 NA NA NA NA >Sol NA >Sol >Sol D <1 <br /> Software: GSI RBCA Spreadsheet Serial g-337-yax-542 <br /> 0 Groundwater Services,Inc.(GSI),1995.All Rights Reserved. Version: v 1.0 <br />