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Tier 1 Worksheet 6.2 <br /> Site Name:Country Club Completed By:Stephen Alton,R,E.A. <br /> Site Location:Stockton,CA Date Completed:7/8/1998 1 OF 1 <br /> Target Risk(Class A&B) 1.0E-6 ■ MGL exposure limit? Calculation Option: 1 <br /> SUBSURFACE SOIL RBSL VALUES Target Riser(Class C) 1.6E-5 ❑ PEI.exposure limit? <br /> > 3 FT BGS) Target Hazard Quotient 1.OE+B <br /> RBSL Results For Complete Exposure Pathways("x'if Complete) <br /> Representative <br /> Concentration Soil Volatilization to Soil Volatilization to Applicable RBSL <br /> CONSTITUENTS OF CONCERN X Soil Leaching to Groundwater X Indoor Air X Outdoor Air RBSL Exceeded? Required CRF <br /> Residential: Commercial: Regulatory(MCL): Residential: Commercial: Residential: Commercial: <br /> CAS No. Name (mglk ) (on-site) (on-silo) (on-site) (on-site) (on-sile) (on-site) (on-site) (mg/kg) If yes Only if-yes"left <br /> 71-43-2 Benzene 1.1E-1 NA 1.0E-1 1.8E-1 NA 2.0E-2 NA 2.3E+0 2.0E-2 ■ 6.0E+00 <br /> 10041-4 Eth (benzene 3.7E-1 NA >Res 6.0E+1 NA 3.2E+2 NA >Res 6.0E+1 ❑ <1 <br /> 1634-044 Methyl t-But I Ether #DIV/O! NA 6.1 E+O NA NA 1.7E+3 NA >Res 6.1 E+O —3r #DIWO! <br /> 108-88-3 1 Toluene 2.2E-1 NA >Res 1.2E+2 NA 2.0E+2 NA >Res 1.2E+2 ❑ <1 <br /> 1330-20-7 X leve mixed isomers 9.8E-1 NA >Res >Res NA >Res NA >Res >Res ❑ <1 <br /> Software: GSI RSCA Spreadsheet Serial: g-337-yax-542 <br /> ®Groundwater Services,Inc.(GSI),1995.All Rights Reserved. Version: v 1.0 <br />