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RBCA SITE ASSESSMENT <br /> Tier 2 Worksheet 91 <br /> Site Name Three Palms Grocery Completed By JEANNE HOMSEY <br /> Site Location 6732 East Highway 88 Stockton CA Date Completed 9/5/2001 1 OF 1 <br /> Target Risk(Class A&0) 1015-6 ❑ MCL exposure limit? Caleutatlon Option i <br /> SURFACE SOIL SSTL VALUES Target Risk(Class C) 1 OE 5 ❑ PEL exposure limit? <br /> < 15 FT BGS Target Hazard Quotient 1 0E+0 <br /> SSTL Results For Complete Exposure pathways('x"K Complete) <br /> Representative <br /> Concentration IIngestion and Dermal Constructlon Applicable SSTL <br /> CONSTITUENTS OF CONCERN X Sail Leaching to Groundwater X Contact X Worker ssn E=eeded 7 Required CRF <br /> Residential Commercial Regulatory(MCL) Residential Commercial Commercial <br /> CA3 No Name (mg/kg) (on-site) (on-ate) (on-site) (on-sue) (on-site) (on-site) (mykp) 'S'If yes Only d yes'M <br /> 71-43-2 Benzene 0 0E+0 91E-3 NA NA NA 9 7E-1 3 3E+1 91E-3 ❑ <1 <br /> 100-41-4 Ethylbenzene 0 0E+0 8 6E+1 NA NA NA >Res >Res 8 6E+1 ❑ <1 <br /> 1634044 Methyl t-B Ether 0 015+0 7 8E-1 NA NA NA 1 7E+2 2 4E+2 7 8E-1 ❑ <1 <br /> 108488-3 Toluene 0 0E+0 2 3E+2 NA NA NA >Res >Res 2 3E+2 ❑ <1 <br /> 1330 20 7 X ens mixed Isomers 0 015+0 >Res NA NA NA >Res >Res >Res 13 <1 <br /> >Res Indicates nsk based target concentration greater than constituent residual saturation value <br /> Software GS1 RSCA Spreadsheet Serial G 313-VKX 542 <br /> O Groundwater Services Inc (GSI) 1995.1997 All Rights Reserved Version 10 1 <br /> I <br />