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Tier 2 Worksheet 8.1 <br /> Site Name:Formeer Regal 603 Site Location:6425 Pacific Aenue,Stockton,CA Completed By:Roy Butler Dale Completed:7110/1998 2 OF 9 <br /> TIER 2 EXPOSURE CONCENTRATION AND INTAKE CALCULATION <br /> OUTDOOR AIR EXPOSURE PATHWAYS ■ (CHECKED IF PATHWAY IS ACTIVE <br /> SUBSURFACE SDHs:VAPOR Eapasure Concentration <br /> INHALATION 1)Source Medium 2)NAF Value W31kg1 3)Exposure Medium 4)Exposure Multiplier 5)Average Dally.lotake Rate <br /> Receptor Outdo A.,POE Con,.(mym"3)(1)1(2) (lR.EFrEON(8YWAT) Im"Sa9davY (mg�gdarSf]1xStl <br /> Subsurface Sell Conc. <br /> Constituents of Concern m On-Site Commerual ON-Sft Residential On-Site Commercial Off-Sit.Residential On-Sole Commeiciat Off-Site Residential On-Silt Commercial Of-Site Residentiat <br /> Benzene 5.0E-3 1.1E+4 9.8E+4 4,6E-7 5.1E-8 7.0E-2 1.2E-1 3.2E-8 6.0E-9 <br /> Eth lbenzene 1.8E-1 1.2E+4 9.8E+4 1.5E-5 1,8E-6 2.0E-1 2.7E-1 2.9E-6 5.0E-7 <br /> Hexane n- 8.7E+1 1,1E+4 9.8E+4 8.0E-3 8.8E-4 2.0E-1 2.7E-1 1.6E-3 2.4E-4 <br /> Meth I t-Bu I Ether 5.0E-2 2.8E+4 2.1E+5 1.8E-6 2.3E-7 2.0E-1 2.7E-1 3.5E-7 6.4E-8 <br /> Toluene 5.0E-3 1,8E+4 1.4E+5 2.7E-7 3.6E-8 2.0E-1 2.7E-1 5.3E-8 9,9E-9 <br /> Xylene mixed isomers 7.7E+0 3.3E+4 2.5E+5 2.3E-4 3.0E-5 2.0E-1 2.7E-1 4.5E-5 8.3E-6 <br /> NOTE: ABS=Dermal absorption factor(dim) BW=Body weight(kg) EF=Exposure frequencey(daystyr) POE=Point of exposure <br /> AF=Adherance factor(mglcm^2) CF=Units conversion factor ET=Exposure time(hrslday) $A=Skin exposue area(cm621day) <br /> AT=Averaging lune(days) ED=Exposure duration(yrs) IR=Inhalation rate(m"3/day) <br /> Software: GSI RBCA Spreadsheet Serial:G443-CSX4" <br /> 0 Groundwater Services,Inc(GSI),19951997.All Rights Reserved. Version: 1.0.1 <br /> r <br /> I <br />