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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />some instances the wells were bailed dry, allowed to recover for <br />30-min., then bailed again. The following table presents drawdown <br />transmissivity rates, recovery transmissivity rates, average <br />transmissivity and estimated permeability fr om each of the a wells <br />bailed: <br />PZ Drawdown Recovery Average Estimated <br />Well 'T' 'T' 'T' Permeabil ity <br /> (gpd/ft) (gpd/ft) (gpd/ft) (cm/sec) <br />B2-4 2313.14 2055.00 2184.07 1.01 x 10~~ <br />P-1 142.15 199.78 170.97 7.94 x 10-9 <br />P1-T2 12.51 50.85 31.68 1.48 x 10-9 <br />B1-3 73.33 300.00 186.67 8.67 x 10-9 <br />P-3 45.16 254.22 149.69 6.95 x 10-9 <br />P1-A 8.43 383.23 195.83 9.09 x 10-9 <br />B1-1 25.76 26.25 26.00 1.21 x 109 <br />P1-T1 20.04 26.83 23.44 1.09 x 10-9 <br />For clarifica tion the following table compares published <br />presumptive drainage characteristics and material types with <br />typical permeability rat es: <br /> Drainage Characteristics: <br />Characteristic Permeability Range (cm/sec) <br />Good 10~ to 10-9 <br />Poor 109 to 10-6 <br />Practically <br />Impervious <br />10-6 to 10-0 <br />Soil Types: <br />Soil Types Permeability Range (cm/sec) <br />Clean Gravel 10~ to 1.0 <br />Clean Sand, <br />Clean Sand/Gravel Mixtures 1.0 to 10-3 <br />2 <br />