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J <br /> r---,, r-1 r-7 r----� r--"C7 <br /> RBCA SITE ASSESSMENT <br /> Tier 1 Worksheet B.1 <br /> Site Name:Stockton Fire Station#3 Completed By:JEANNE HOMSEY <br /> Site Location:1116 First Street,Stockton,CA Date Completed:3/14/2000 1 OF 1 <br /> Target Risk(Class A E B) 1.0E-5 ❑ MCL exposure limit? Calculation Option: 1 <br /> SURFACE SOIL RBSL VALUES Target Risk(Class C) 1.0E-5 ❑ PEL exposure limit? <br /> < 15 FT BGS Target Hazard Quotient 1.0E+0 <br /> RBSL Results For Complete Exposure Pathways('X'if Complete) <br /> Representative <br /> Concentration Ingestion and Dermal Construction Applicable RBSL <br /> CONSTITUENTS OF CONCERN X Soil Leaching to Groundwater X Contact X Worker RBSL Exceeded 7 Required CRF <br /> '_..: Residential: -Commercial: Regulatory(MCL): Residential: 'Commercial: Commercial <br /> CAS No. Name (mg/kg) (on-site) (on-stte) (on-site) (on-site) (on-site) (on-site) (mg/kg) "■"If yes Only if"yes'left <br /> 71-43-2 Benzene 0.0E+0 NA 5.2E-1 NA NA 9.7E+0 3.3E+2 5.2E-1 ❑ <1 <br /> 100-41-4 Eth benzene 0.0E+0 NA >Res NA NA >Res >Res >Res ❑ 1 <1 <br /> 1634-044 Meth t-Butyl Ether 0.0E+0 NA 3.7E+0 NA NA 1.7E+2 2.4E+2 3.7E+0 ❑ <1 <br /> 108-88-3 1 Toluene 0.0E+0 NA >Res I NA NA >Res >Res >Res ❑ <1 <br /> 1330-20-7 X ens mixed isomers 0.0E+0 NA >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 /> m Groundwater Services,Inc.(GSI),19951997.All Rights Reserved. Version: 1.0:1 <br /> i <br />