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Second Submittal <br /> and the Taylor and Gill. Both are treated as general head boundaries using the MODFLOW <br /> river package. Drain boundary conditions are associated with the Callahan and Childers <br /> drains. Figure 10 quantifies and further describe the numerical boundaries utilized in the <br /> model. <br /> 3.4 Model Parameters <br /> Appendix F summarizes the range of individual parameters utilized in the modeling effort <br /> along with the value used in the model. <br /> 3.5 Model Timeframe <br /> The groundwater system within the model domain is quite dynamic due to the seasonal <br /> nature of the irrigation ditches, river flows, and water supply deliveries. From Site <br /> monitoring wells, the groundwater system reaches a new equilibrium relatively quickly <br /> after ditches start to flow in the spring. For this effort, Telesto chose to utilize a steady- <br /> state model representing the irrigation-season groundwater levels (highest levels). The <br /> steady-state model provides the. basis for a series of transient models that simulate <br /> groundwater behavior as the stresses associated with mining progress. The timeframe of <br /> the transient models is one year,representing one-half of each phase of mining as described <br /> in the mine plan. The total simulated time is 10 years, representing the five phases of <br /> mining. Reclamation (after 10 years) is simulated by imposing the drains and liners on to <br /> the steady-state model. <br /> Loveland Ready-Mix Concrete 14 Telesto Solutions,Inc. <br /> 20180112 g—.1—t—mdy_2na,,.bnut l d— January 2018 <br />