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' time have been constructed from the data collected from Extraction <br /> Well MW-11 (pumping well) and observation wells MW-3, MW4, <br /> MW-5, MW-7 and MW-10, and are included as Appendix C <br /> The following calculations were used to further define the aquifer characteristics <br /> Transmissivity: <br />' Transmissivity is the rate at which water is transmitted through a unit width of an aquifer under a unit <br /> hydraulic gradient and is calculated by the following formula <br /> T _ transmissivity <br /> T = 264 (Q) Q pumping rate, gpm <br /> A s As — slope of the time drawdown graph expressed <br />' as the change in drawdown between any two <br /> times on the log scale whose ratio is 10 (one <br /> log cycle) <br />' Coefficient of Storage <br />' The volume of water an aquifer releases from or takes into storage per unit surface area of the aquifer <br /> per unit change in head, and is calculated by the following formula <br /> S = coefficient of storage <br /> S _ 0 3 T to T = transmissivity, gpd/ft <br /> r 2 to = intercept of the straight line at zero <br />' drawdown, in days <br /> r = distance, in feet, from the pumped well <br />' to the observation well where the <br /> drawdown measurements were made <br /> Hydraulic Conductivity: <br /> The rate of flow of water in gallons per day through a cross section of one square foot under a unit <br />' hydraulic gradient An estimate of the hydraulic conductivity was calculated from the data of the <br /> pumping well (MW-11) based on the estimated aquifer thickness The estimated aquifer thickness <br /> was used for a calculation of hydraulic conductivity using the following equation <br /> K T K = conductivity <br /> = — <br /> T = transmissivity <br />' M W aquifer thickness, feet <br />' All the calculations have been presented on the time drawdown plots in Appendix C <br /> A.11528Ji ASA 12 <br />