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. TABLE 1 <br /> ' AVERAGE POROS=and <br /> INTRINSIC PERVIEABIL= <br /> I <br /> Matenal Porosity I:ntnnsic Permeabzlfiy <br /> (icy, D) c,-n' <br /> Clay a5 00005 4 9 x 10-':' <br /> Sand 35 50 4 9 x 10'' <br /> ' Gravel 25 5,000 4 9 x 10 5 <br /> Gravel and Sand � 20 500 � 4 9 x 10-6 <br /> Sandstone 15 5 4 9 x 10'$ <br /> Dense Limestone and Shale j 5 f 005 4 9 x 10'19 <br /> ' ua z3te, Granite I 1 0 0005 Q 0 X l 0'z <br /> Q <br /> ' One aarcy(D)= 0 987 x 10-' cm2 <br /> TABLE 2 <br /> ' • =, RL'�FSiC PERVIF-ABM= and <br /> =R.AULTC CONDUCT V= <br /> Matenal L--3trnsic Permeablhty Hydraulic Conductuvry <br /> 1 <br /> cm= Darcy (D) crn/s m/yr s <br /> ' Clayey Silts 10-1- to 10-9 10-4 to 10-1 10'7 to 10- 0 032 to 32 <br /> Silty Sand 7x10-11 to 9x10"7 7x10-' to 90 7x1 6 to 9x10''- 2 2 to 28,;01 <br /> ' Clean Sand 10"9 to 10-5 10-1 to 103 110-1 to 1 32 to 320,000 <br /> Gravel 10-6 to 10"3 102 to 105 10-1 to 102 32,000 to 3 2xI0' <br /> II <br /> ' 1 cm/s = 315,567 m/yr <br /> ' References <br /> Tabie l Approxuziate average Porosity and ln. nsic Permeability of--annus uiatenals taken IYom Hvcrolm for <br /> 1�eers by r msley,Kobler and Pauihus,c 1982 Table 5-2 <br /> ' Table 2 Table of Ranges of lutn=c Pemeability and Hydraulic Conductivity from Spuinalcer PLUS and <br /> HyperVentilatc mo&ing program based an the aracle'A Practical Approach to the Demp,Oper aticu,and <br /> ' Monitoring of Sail Ventmg Syste;ns"by? C.Johnson et- al. <br /> - <br />