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Exhibit VII-10 <br /> Solubdrty Of Common Petroleum Constituents _ <br /> Sol<ubikyl <br /> Constituent _ (mg/L at 20°C) -- <br /> Methyl t-butyl ether 48,000 <br /> E fllylene dibromide 4,310 <br /> B,.,nzene 1,780 <br /> 1 oluene 515 <br /> Xylene 185 <br /> lrthylbenzene 152 <br /> Naphthalene 30 <br /> Tetraethyl lead 00025 <br /> saturated zone (for air sparguig) and unsaturated zone (when 5VE is <br /> used) is best determined from field tests, it can be estimated from soil <br /> boring logs and laboratory tests Coarse-grained soils (e.g., sands) have <br /> greater intnnsic permeability than fine-grained soils (e.g , clays and <br /> silts) Use the values shown to Mbit.VII-11 to determine if intruisic <br /> Permeability is wit'Lun the range of effectiveness for air spa.rgizrig <br /> Exilibit V11-1I <br /> Intrinsic Permeability And Air Spargrng Effectiveness <br /> Intrinsic Perrmabtirty (k)(cm2) Air Sparging Ellee&Uveness <br /> k > 10-9 Generally effective <br /> 10'9 > k> 10-14 May be effective, needs further evaluation <br /> k< 10-90 Marginal effectiveness to ineffective <br /> Intrinsic permeability of saturated-zone soils is usually determined in <br /> the field by aquifer pump tests that measure hydraulic conductivity. You <br /> can convert hydraulic conductivity to intrinsic permeability using the <br /> following equation. <br /> k = K (u/pg) <br /> where k = intrinsic permeability (cm2) <br /> K = hydraulic conductmty (cm/sec) <br /> u = water viscosity (g/cm sec) <br /> p = water density (g/cm3) <br /> g = acceleration due to gravity (cm/sect) <br /> October 1994 VII-13 <br />