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The models were run under steady state conditions which estimate heads and <br />flows after infinite time. Steady state models simulate equilibrium conditions for <br />both the baseline existing condition model and the post -development reclamation <br />condition model. Similarly the steady state model runs simulate worst case <br />drawdown and flow conditions under dewatering stresses. The models are <br />created to assess the relative and worst case effects of dewatering the gravel <br />pits on the alluvial aquifer, the river, and ponds nearby. The model is not <br />designed to simulate seasonal variations in river flow, ditch flow, evaporation and <br />recharge. Evaluation of these parameters in seasonally varying transient <br />simulations would add unnecessary complexity to the model and far exceed the <br />intended use of the model. <br />Flying W Pit <br />Groundwater Modeling Report Revised June 28, 2005 <br />8of13 <br />