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RBC <br /> ` SITE ASSESSMENTTler 2 Worksheet 9.3 <br /> Site Name:Moore Petroleum Completed By:Apex Envirctech,Inc. <br /> Site Location.5491 F Street,Banta,CA pate Completed.211711998 1 OF i <br /> Target Risk(Class A&6) 1.0E-6 ■ MCL exposure limit? Calculation Option: 2 <br /> GROUNDWATER SSTL VALUES Target Risk(Class C) IOE-5 0 PEL exposure limit? Groundwater DAF Option: Domenico-No Decay <br /> Target Hazard Quotient 1.0E+0 (Two-directional vert dispersion) <br /> SSTL Results For Complete Exposure Pathways("x"If Complete) <br /> Representative <br /> Concentration Groundwater Volatilization Groundwater Volatilization Applicable SSTL <br /> CONSTITUENTS OF CONCERN X Groundwater Ingestion X I to Indoor Air X I to Outdoor Air SSTL Exceeded? Required CRF <br /> Residential: Commercial: Regulatory(MCL): Residential: Commercial: Residential I Commercial, <br /> CAS No. Name {mg/Q 100 feet (on-sle) (on-site) (on-site) (on-site) fon-sHe on-slle <br /> ( ) (mgr4 "N"If yes Only if"yes"left <br /> 71-43-2 Benzene O.0E+0 1.3E-3 2.9E-3 1.0E-3 NA 5.9E-2 NA 2.2E+1 1.0E-3 p <1 <br /> 68334-30-5 Diesel No.2 8.1 E-1 1.2E-1 2.6E-1 1.0E-1 NA >Sol NA >Sol 1.0E-1 1 B-0E+00 <br /> 100-41-4 Ethyliienzene O.OE+O 5.5E+0 1.0E+1 7.0E-1 NA >Sol NA >Sol 7.0E-1 ❑ <1 <br /> 1634-04-4 Methyl t-Butyl Ether 0.0E+0 2.8E-1 5.1 E-1 3.5E-2 NA 4.3E+3 NA >Sol 3.5E-2 ❑ <1 <br /> 108-88-3 1 Toluene 0.0E+0 1.1 E+1 2.0E+1 1.5E-1 NA 2.4E+2 NA >Sol 1.5E-1 ❑ <1 <br /> 1330-20-7 Xylene(mixed isomers) 0.0E+0 1.1 E+2 >Sol 1.8E+0 NA >Sol NA >Sol 1.8E+0 ❑ <1 <br /> >Sol indicates risk-based target concentration greater than constituent solubility <br /> Software: GSI RBCA Spreadsheet Serial: G-357-KEX-572 <br /> m Groundwater Services,Inc.(GSI), 1995-1997.All Rights Reserved. Version: 1.0.1 <br />