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With any modeling exercise, or almost any hydrogeological analysis of any type <br />for that matter, there are any number of assumptions that must be incorporated <br />into the problem definition and set-up. This modeling study is no exception and, <br />while relatively recent data of very good quality were available for this exercise, a <br />number of important assumptions have been made that could have impacts on the <br />predictive results if such assumptions were proven unreliable. These include the <br />following: <br />• It is assumed that the aquifer is generally homogeneous and that the <br />aquifer hydraulic conductivity applied is truly representative of the aquifer <br />on both awider-scale and more local basis. <br />• It is assumed that the boundary conditions set-up in the model do match <br />the real boundary conditions to an extent that no significant impacts on the <br />predictive results will occur. <br />• It is assumed that the USGS data on ambient heads, aquifer depth, and <br />aquifer extent are reflective of actual average conditions sufficient to <br />allow reasonable predictions of effects. <br />• It is assumed that the drawdown impacts from pumping of existing wells <br />will not impact the net aquifer saturated thickness on anything other than a <br />very local basis and thus their absence in the simulations will not have any <br />significant impact on the predictive results. <br />9 <br />Marlin and Wood Water Consultants, Inc. <br />