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r <br /> TABLE I - <br /> AVERAGE POROSITY and <br /> L,TRINSIC PERMFA BIL -y <br /> tt;tial Porosity Invinsic Permeability <br /> flJ <br /> (darcy, D) cmz <br /> ' Clay 45 0.00105 4.9 x 10'32 <br /> Sand 35 50 4.9 x 10-7 <br /> Gravel 25 5,000 4.9 x 10'S <br /> Gravel and Sand 20 500 4.9 x 10-6 <br /> Sandstone <br /> 15 5 4.9 x l 0-8 <br /> Dense Limestone and Slagle 5 0.05 4.9 x .1 0-10 <br /> 1 <br /> Quartzite, Grwto I 0.0005 4.9 x 10'32 <br /> One darty(D) = 0.987x 10`1 cm2 <br /> T_:kBLE 2 - <br /> Pi IT SIC PERA-4FAB =and <br /> EIYDRAMC CGNDUCTWITY <br /> ' Material Intrinsic Permeability Hydraulic Conductivity <br /> Darcy (D) cm/s syr <br /> Clayey Silts 10'12 tole 10`4 to 10'1 10-1 to 10-4 0.032 to 32 <br /> Silty Sand 7x10-11 to 9x10-7 7x10'5 to 90 7x10-6 to 9x10'z 2.2 to 2$,401 <br /> Clean Sand 10" to 1 C)" I O'1 to 103 -' <br /> IO to 1 32 to 320,000 . <br /> Gravel 10-6 to 10-1 102 to 105 10-1 to 10- 32,000 to 3.2.X107 <br /> I 1 curls=315,567 m/yr <br /> References <br /> Table 1: Anproximate average Porosity and Intrinsic PC:=eabt3ity of various Mates als taken from aldrolo2,v far <br /> Engineers by Linsley,Kohler and Paulhus,c 1952 Table 6-2 <br /> Table 2: Table Of Ranges of Intrisssic Permeability and 14y drauiic Conductivity from Spinnaker PLUS and <br /> HyperVenOate modeling program based on the article "A Practical Approach to the Design,Operation,and <br /> Monitoring of Soil Venting Systems'by P.C.Johnson et. aI. <br />