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1 <br /> i <br /> F <br /> TABLE 1 <br /> A'V7ERAGE POROSM and <br /> LNTRINSIC PERMEABMITY <br /> _ atenal Porosity Intnnszc Permeability <br /> '� of <br /> (icy, ID) rrt2) c <br /> Clay 45 00005 4 9 x 10"12 <br /> Sand 35 50 4 9x 10'' <br />` <br /> Gravel 25 5,000 4 9 x 10-5 <br /> I <br /> I Gravel and Sand <br /> 20 SOf3 4 9 x 106 <br /> 15 5 4 9 x 10'$ <br /> Sandstone <br /> Dense Limestone and Shale <br /> __j 5 005 4.9 x 10-30 <br /> Quartzite, Granite <br /> :�:�O�00 A 9 x 10-i2 <br /> One darty (D) 0 987 x 10-8 cm2 <br /> '1:_ABLE 2 <br /> f DITRINSIC YE7ZmAB .T5' and <br /> j HYDRAULIC CONDUCTI Y <br /> Material Intr-71sic PermeabiLuty Hydraulic Conductivity <br /> crr' Darcy (D) <br /> Clavey Silts 10-12 to aQ-4 to 10-1 i0-, to 10-4 0 432 to 32 <br /> c _2 to 2S 401 <br /> Silty Sand 7x10'11 to 9x?0-' :x10"' to 9a 7x10 to -x-0 2 2 , <br /> 1 i <br /> Clears Sand 10-11to 101 14-1 to lay 10 to ] 32 to 320,000 <br /> Gravel 1 C?6 to 10-1 102 to 105 1 d'1 to 102 32107 to 3 2x107 <br /> ' 1 cmJs = 315,567 rrJyr <br /> References <br /> Taale I Approximate average Paraslty and Int uissc Permeability of�anovs materials taken from Hvdroloe'r for <br /> En�ncers by tinsley,Kohler and Paulhus,c 1982 Table 6-2 <br /> Table 2 Table of Ranges of Fntrmssc F'ermeabfflty and H}drautic Crsnducuvvty from Spinnaker PLUS and <br /> 14'perVenulate njadeling program based an ibe arlide'A Practical Approach to the Design,Operaraar3,=d <br /> momionng of Soil venung 5ysiems"by P C Johnson et. al <br />