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REIC' SITE ASSESSMENT <br /> Tler 2 Worksheet 9.1 <br /> Site Name:Stockton Fire Station#3 Completed By:JEANNE HOMSEY <br /> Site Location:1116 First Street,Stockton,CA pate Completed:3/14/2000 1 OF I <br /> Target Risk(Class A 6 9) 1.0E-5 Q MCL exposure limit? Calculation Option: 2 <br /> SURFACE SOIL SSTL VALUES Target Risk(Class C)1.0E-5 ❑ PEL exposure limit? Groundwater DAF Option: Domenico-First Order <br /> < 15 FT BGS Target Hazard Quotient 1.0E+0 (One directlonal vert dispersion) <br /> 33TL Results For Complete F-xposure Pathways('X'tf Complete) <br /> Representative <br /> Concentration Ingestion and Dermal Construction Applicable SSTL <br /> CONSTITUENTS OF CONCERN X Soil Leaching to Groundwater X I Contact <br /> X Worker SSTL Exceeded 7 Required CRF <br /> Residential: Commercial: Regulatory(MCL): Residential: Commercial: Commercial- <br /> CAS <br /> mmercia:CAS No. Name (mg/kg) 150 feet (on-site) (on-site) (on-sRe <br /> (or.sKe) (on-site) (mg/kg) "N"If yes Only if'yes'left <br /> 71-43-2 Benzene 0.0E+0 >Res 5.2E-1 NA NA 9.7E+0 3.3E+2 5.2E-1 ❑ <1 <br /> 100414 Ethylbenzene 0.0E+0 >Res >Res NA NA >Res >Res >Res ❑ <1 <br /> 1634-044 Meth t-Buityl Ether 0.0E+0 >Res 3.7E+0 NA NA 1.7E+2 2.4E+2 3.7E+0 ❑ <1 <br /> 108-88-3 1 Toluene 0.0E+0 >Res I >Res NA NA >Res >Res >Res ❑ <1 <br /> 1330-20-7 X ene mixed isomers 0.0E+0 >Res I >Res NA NA >Res >Res >Res ❑ <1 <br /> >Res indicates risk-based target concentration greater than constituent residual saturation value <br /> Software: GSI RBCA Spreadsheet Serial: G-313-VKX-542 <br /> O Groundwater Services,Inc.(GSI),1995-1997.All Rights Reserved. Version: 1.0.1 <br />