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� � � r I>� � � � � >•■■ s• IIS � <br /> RBCA Too]Kit for Chemical Releases,Version 1.3 <br /> RBCA SITE ASSESSMENT <br /> 5 OF 7 <br /> TIER 1 EXPOSURE CONCENTRATION AND INTAKE CALCULATION <br /> 60T60012 AIR BX.POSURE PATHWAYS ,(CHECKED IF PATHWAY.I.S ACTIVE) <br /> GROUNDWATER;VAPOR Exposure Concentration <br /> INHALATION 1)Source Medium 2)NAF Value(rn"3/Q 3)Exposure Medium <br /> Receptor Outdoor Air. POE Conc. (mg1m13) (1)1(2) <br /> On-site(o ft) Off-site 1 Off-site 2 On-site(0 ft) Off-site 1 Off-site 2 <br /> Groundwater (n ft) (o ft) (o ft) (o ft) <br /> Constituents Of Concern Cone.(mg1L) Commercial NA NA Commercial NA NA <br /> Benzene 5.3E+1 1.1E+5 4-BE-4 _ <br /> Toluene 3.6E+1 1.0E+5 3.5E_4 <br /> Ethylbenzene 5.1E+O 9.$E+4 5.2E-5 _ <br /> Xylene (mixed isomers) 2.4E+1 1,1 E+5 2.2E-4 _ <br /> Nethyl t-Butyl ether 2.OE+O 5.3E+5 3.13E-6 <br /> i <br /> NOTE: NAF=Natural attenuation factor POE=Point of exposure <br /> Site Name:Canepa's Car Wash Date Completed: B-Oct-02 <br /> Site Location: Pacific Ave., Stockton Job 1D: 1707 <br /> Completed By: LHM <br />