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Tier 2 Worksheet 9.2 <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 8 8) 1.0E-6 ! MCL exposure limit? Calculation Option: 2 <br /> SUBSURFACE SOIL SSTL VALUES Target Risk(Class C) 1AE-5 ❑ PEL exposure limit? <br /> 3 FT BGS Target Hazard Quotient 1.0E+0 <br /> SSTL Results For Complete Exposure Pathways("i'if Complete) <br /> Representative <br /> Concentration Soil Volatilization to Soil Volatilization to Applicable SSTL <br /> CONSTITUENTS OF CONCERN X Soil Leaching to Groundwater X I Indoor Air X Outdoor Air SSTL Exceeded? Required CRF <br /> Residential: Commercial: Regulatory(MCL): Residential: Commercial- Residential: Commercial: <br /> CAS No. Name (mglkg) 2000 feet (on-site) (on-site) (on-sale) (on-Bile) BO feet (on-site) (mglkg) If es Only if'yes"left <br /> 71-43-2 Benzene 1.1E-1 3.1E-2 1.0E-1 1.8E-1 NA 2.0E-2 1.6E+0 2.3E+0 2,0E-2 ■ 6.0E+00 <br /> 100-41-4 Eth (benzene 3.7E-1 3.2E+2 >Res 6.1E+1 NA 3.2E+2 >Res >Res 6.1E+1 ❑ <1 <br /> 1634-04-4 Methyl t-Butyl Ether #DIVI01 2.2E+0 6.2E+0 NA NA1.7E+3 >Res >Res 2.2E+0 �c #DEV/0! <br /> 108-88-3 Toluene 22E-1 8.9E+2 >Res 1.2E+2 NA 2.0E+2 >Res >Res 1.2E+2 ❑ <1 <br /> 1330-20-7 Xylene mixed isomers 9.8E-1 >Res >Res >Res NA >Res >Res .>Res >Res ❑ <1 <br /> Software:-GSI RSCA Spreadsheet Serial: 9-337-yax-542 <br /> 0 Groundwater Services,Inc.(GSI), 1995.All Rights Reserved. Version: v 1.0 <br /> l <br /> i <br />