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<br />. <br /> <br />. <br /> <br />7.2 is the water level in the well simulated by the radial flow model. This water level is <br />also presented in Figure 7.5 as the trace labeled MCW well. Top and base of the <br />aquijer at this site are also shown in Figure 7.5 to provide a sense of the degree to <br />which the aquijer is being dewatered. Results for the remaining simulations are <br />presented in a similar format. <br /> <br />We see that with this high transmissivity value, water level in the well barely <br />reaches the top of the aquijer in the course of the simulation. The aquifer remains <br />confined for nearly the entire period of simulation, Results from the Trescott <br />approximation and the radial model are essentially identical, indicating that for confined <br />conditions and long term pumping, the Trescott approximation is likely quite accurate, <br />and probably as reliable as a radial model. This is not unexpected for a fully confined <br />aquifer. <br /> <br />Resu~s for the lower transmissivity value from Banta's model are presented in <br />Table 7.3 and Rgure 7.6 for both the Trescott approximation and the radial flow model. <br />Again we see very good agreement between the approximation and the radial flow <br />model. Even when we start to see unconfined conditions at the well, after 2045, the <br />approximation can be used for small decreases in saturated thickness. At this well for <br />the next 50 years, the simulations indicate that thinning aquifer and unconfined <br />conditions should not be an issue, unless pumping rates are significantly larger than <br />those used in the Banta simulation. <br /> <br />7.4 Comparison of Simulation Results to Reid Observations <br /> <br />A number of water level measurements have been taken at this well since <br />installation and have been provided to us by Jehn Water Consultants, Inc. (personal <br />communication 1997). In Rgure 7.7, the simulated water levets are presented with the <br />observed data for comparison. The traces labeled SIMGRO and Trescott are the same <br />as the SIMGRO head and the Trescott approximation for the lower transmissivity (500 <br />. sqfVd) results presented in Rgure 7.6 and Table 7.3. SWl represents measured static <br /> <br />29 <br />