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i • • <br /> RBCA Tool Kit for Chemical Releases,Version 1.3 <br /> RBCA SITE ASSESSMENT <br /> 6 OF 7 <br /> TIER 1 EXPOSURE CONCENTRATION AND INTAKE CALCULATION <br /> Ql1TODOR AIR EXPOSURE:PATHWAXS <br /> GROUNDWATER:VAPOR <br /> INHALATION (cont'd) 4) Exposure Multiplier 5)Average Inhalation Exposure <br /> (EFxED)1(ATx365) (unitless) Concentration(mg/m"3)(3)X(4) <br /> Off-site 1 Off-site 2 Off-site 1 off-site 2 <br /> On-site(0 ft) (0 R) (0 ft) On-site(0 ft) <br /> (0 ft) (p ft) <br /> Constituents of Concern Commercial NA NA Commercial NA NA <br /> Benzene 2.4E-1 1.2E-4 <br /> Toluene 6.8E-1 2.4E-4 <br /> Ethylbenzene 6.8E-1 3.6E-5 <br /> Xylene (mixed isomers) 6.8E-1 1.5E-4 <br /> Methyl t-Butyl ether 6.8E-1 2.6E-6 <br /> NOTE: AT=Averaging time(days) EF= Exposure frequency(days/yr) ED=Exposure duration(yr) <br /> Site Name: Canepa's Car Wash Date Completed:8-Oct-02 <br /> Site Location:Pacific Ave.,Stockton Job tD: 1707 <br /> Completed By: I HM <br /> I <br />