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RBCA Tool Kit for Chemical Releases,Version 1.3 <br /> RBCA SITE ASSESSMENT <br /> 7 OF 7 <br /> TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION <br /> OUTDOOR AIR EXPOSURE PATHWAYS <br /> TOTAL PATHWAY EXPOSURE tmgtm"31 <br /> (Sum average expsosure concentrations <br /> from soil and groundwater routes) <br /> On-site(0 ft) Off-site 1 ON-site 2 <br /> (0 ft) (0 ft} <br /> Residential Construction None None <br /> Constituents of Concern Worker <br /> Benzene 1.4E-5 <br /> Ethylbenzene 1.4E-7 <br /> Toluene 2.2E-7 <br /> Xylene (mixed isomers) 1.6E-6 <br /> TPH-Aliph >C16-C21 12E-3 <br /> TPH-Aliph >C21-C34 4.6E-2 <br /> TPH -Arom >C16-C21 4.0E-4 <br /> TPH -Arorn >C21-C35 5.6E-4 <br /> TPN -Aliph >C12-C16 3.2E-3 <br /> TPH-Arom >C12-C16 1.1E-3 <br /> Site Name: Heritage Square Date Completed:20-Sep-02 <br /> Site Location:640 N.San Joaquin Street,Stockton,CA Job ID: 3572E <br /> Completed By: Lee H. Morse <br />