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<br />8. <br />4.3 COMPUTER SIMULATION OF AQUIFER TEST <br />Using the aquifer data obtained from the testing program, and <br />with simplified interpretations of the geometry of the aquifer, <br />' the constant discharge test was simulated for two cases using a <br />computer model. This transient model uses the Theis equation, <br />' and accounts for aquifer boundaries by generating recharge or <br />discharge image wells across the boundary. <br />' In the first case, the aquifer was assumed to be continuous in <br />' all directions. Input values and model output are presented in <br />Table 1 and Fig. 1, respectively. <br />In the second case, the aquifer was considered to be continuous <br />in the north and west directions, but the east and south was <br />' assumed to be a recharge boundary as represented by Stollsteimer <br />Creek. Input values and model output for case two are presented <br />in Table 2 and Fig. 2, respectively. <br />' A wide range of transmissivity values were tried for both cases <br />in order to simulate the actual observation hole drawdown as <br />obtained from field data. Because head loss was high at the <br />' pumping well, an approximation was made to match the actual <br />measured drawdown in the well with the modelled drawdown. The <br />' best fit aquifer parameters are a transmissivity of 130 gpd/ft <br />and a storativity of 0.0001. <br /> <br /> <br /> <br />1 <br />o a vR EnU6nssOCie rES Urn rEo <br />