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® = = M = = = = ® = = = M = M = W <br />Table 1 (Continued) <br />Predicted Vapor Phase VOC Concentrations in Lower Vadose Zone Soil <br />Equivalent to Maximum Groundwater Concentrations at the PQL and MDL <br />Analytes(e) <br />Henry's <br />Constant <br />KH(b) <br />(Dimensionless) <br />Henry's <br />Constant <br />kH(b) <br />(atm.m3lmol) <br />Regulated <br />Groundwater <br />Concentration <br />at PQUO <br />(jig/l.) <br />Vapor <br />Concentration <br />Equivalent to <br />PQLO) <br />(iagll-) <br />Vapor <br />Concentration <br />Equivalent to <br />PQLU7 <br />(ppbv) <br />Regulated <br />Groundwater <br />Concentration <br />at MDUO <br />(ggll-) <br />Vapor <br />Concentration <br />Equivalent to <br />MDUk) <br />(gglL) <br />Vapor <br />Concentration <br />Equivalent to <br />MDUN <br />(ppbv) <br />trans-1,4-Dichloro-2-butene <br />N <br />N <br />0.50 <br />0.42 <br />Vinyl acetate <br />0.0196(8) <br />0.00048 <br />2.0 <br />0.0392 <br />11.136 <br />0.94 <br />0.0184 <br />5.227 <br />Benzene <br />0.221 <br />0.00543 <br />0.50 <br />0.1105 <br />34.639 <br />0.28 <br />0.0619 <br />19.404 <br />Bromobenzene <br />0.057(g) <br />0.00140 <br />0.50 <br />0.0285 <br />4.438 <br />0.39 <br />0.0222 <br />3.457 <br />Bromochloromethane <br />815.(8) <br />20.1 <br />0.50 <br />408. <br />77,100. <br />0.42 <br />342. <br />64,700. <br />Bromodichloromethane <br />0.0974 <br />0.0024(4) <br />0.50 <br />0.0487 <br />9.203 <br />0.25 <br />0.0244 <br />4.611 <br />Bromoform <br />0.0227 <br />0.00056(4) <br />0.50 <br />0.0114 <br />1.103 <br />0.18 <br />0.0041(k) <br />0.397(k) <br />Bromomethane <br />8.09(8) <br />0.200 <br />1.0 <br />8.09 <br />1,800, <br />0.61 <br />4.93 <br />1,100. <br />n-Butylbenzene <br />0.5278 <br />0.013(4) <br />0.50 <br />0.2639 <br />48.073 <br />0.38 <br />0.2006 <br />36.542 <br />sec-Butylbenzene <br />0.5684 <br />0.014(d) <br />0.50 <br />0.2842 <br />51.767 <br />0.36 <br />0.2046 <br />37.268 <br />tert-Butylbenzene <br />0.4872 <br />0.012(4) <br />0.50 <br />0.2436 <br />44.372 <br />0.35 <br />0.1705 <br />31.056 <br />Carbon tetrachloride <br />0.813 <br />0.0200 <br />0.50 <br />0.4065 <br />64.626 <br />0.37 <br />0.3008 <br />47.822 <br />Chlorobenzene <br />0.141 <br />0.00346 <br />0.50 <br />0.0705 <br />15.293 <br />0.32 <br />0.0451 <br />9.783 <br />Chloroethane <br />0.447 <br />0.0110 <br />0.50 <br />0.2235 <br />84.660 <br />0.31 <br />0.1386 <br />52.50 <br />Chloroform <br />0.152 <br />0.00375 <br />0.50 <br />0.0760 <br />15.574 <br />0.37 <br />0.0562 <br />11.516 <br />Chloromethane <br />2.10(g) <br />0.05177 <br />0.50 <br />1.05 <br />507. <br />0.18 <br />0.378 <br />183. <br />2-Chlorotoluene <br />0.308(8) <br />0.00759 <br />0.50 <br />0.154 <br />29.730 <br />0.33 <br />0.1016 <br />19.614 <br />4-Chlorotoluene <br />0.014(8) <br />0.00034 <br />0.50 <br />0.007 <br />1.352 <br />0.42 <br />0.0059 <br />1.139 <br />Dibromochloromethane <br />0.0402 <br />0.00099(4) <br />0.50 <br />0.0201 <br />5.678 <br />0.47 <br />0.0189 <br />5.339 <br />1,2-Dibromoethane (EDB) <br />0.0129 <br />0.000318 <br />0.50 <br />0.0065 <br />0.845 <br />0.43 <br />0.0055 <br />0.715 <br />Dibromomethane <br />26.2(g) <br />0.6453 <br />0.50 <br />13.1 1 <br />5,325. <br />0.38 <br />9.96 <br />4,049. <br />1,2-Dibromo-3-chioropropane <br />1.0 <br />0.64 <br />Prediced Vapor Equivs to GW PQL and MCL.doc Page 2 of 4 <br />