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v <br /> J <br /> CALCULATION OF TRANSMISSIBILITY AND PERMEABILITY <br /> Rearranging equation (3) and applying it to a pair of observation well data, the transmissibility <br /> (kh/µ) can be calculated The equation is as follows. <br /> kh/;i = q.TpK ln(r2/r,) / 19 88T.(p22 - p12) <br /> ( ) <br /> where. subscripts 1 and 2 refer to two observation wells <br /> An average transmissibility value is calculated from the values computed for pairs of observation <br /> data that meet the above-mentioned criteria. Using the average transmissibility value, an <br /> estimated extraction interval (h), and air viscosity (u) of 0.018 cp, the permeability of the soil <br /> is calculated using the following equation* <br /> k = Transmissibility*µ/h (5} <br /> CALCULATION OF RADIUS OF INFLUENCE <br /> Using the average transmissibility (kh/µ), the radius of influence is calculated from the data for <br /> each observation well as follows <br /> 5 <br /> rt = r exp(19 88T.((p.2 - p(,)2)/q.Tp.) kh1A] (6) <br /> Nates. <br /> I Static atmospheric pressure is taken as 14 7 psia or 407 in. H2O <br /> 2. Calculated transmissibility and radius of influence values that are significantly higher or <br /> lower than others are eliminated from averaging calculations. <br /> 1 <br /> y <br /> r <br /> t <br /> • <br /> 1 + <br /> D-3 <br />