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TABLE 1 <br /> 1 AVERAGE POROSITY and <br /> INTRINSIC PERMFABM= <br /> ' Matenal Porosity Immnstc Permeabr.Iity <br /> °lo <br /> (icy, D) cm= <br /> CIay 45 0.0005 4.9 x 10" <br /> Sand 35 50 4 9 x 10-' <br /> 1 Gravel 25 53,000 4 9 x 10-5 <br /> Gravel and Sand 20 500 4 9 x 10 <br /> 1 <br /> stone d 15 5 4 9 x IV <br /> Sandstone <br /> Dense Limestone and Shale 5 005 4.9 x 10`0 <br /> Quartzite, Granite 1 0 0005 a 9 x 10'1:1 <br /> 1 One darty(D)=0 987 x 1074 cm2 <br /> TABLE z <br /> LITRINSIC PER EZABILITY and <br /> HYDRAULIC CONDUCTIVITY <br /> Materal Intrinsic Permeability Hydraulic Conductivity <br /> cm- Darcy(D) cm/s M/yr <br /> Clayey Salts 10-'2 to 10'9 10'4 to 10-' 1T1 to 10-; 0 032 to 32 <br /> Silty Sand 7xIC" to 9.60-' 7x10-3 to 90 7x10 to 9x1V 2 2 to 28,401 <br /> Clean Sand 1 10'9 to 10'5 10-' to 103 104 to 1 32 to 320,000 <br /> 1Gravel 1 6 to 10-3 107 to 105 10-' to 10;132,000 to 3 2x10' <br /> I crn/s =315,567 m/yr <br /> ' References <br /> Table 1: Appr=mate average Porosity and Int mwe Permeability of nanous matenals taken f3'=j droloV for <br /> 1 a&e=by Lmsiey,Kower and Paulhim c 1982 Table 6-2 <br /> Table 2: Table ofRang=of iatnnstc Permeability and Rydrau&Candttctivtty from Spmnal er PLUS and <br /> HyperVeuttlate modeling program based on the article'A Practical Approach to the Demgza,Operation,and <br /> ' Marutormg of Soil Vaattng Systems'by P C.Johnson eL al <br /> 1 <br /> 1 <br />