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TAB 17 <br /> PROBABLE HYDROLOGIC CONSEQUENCES <br /> Table of Contents <br /> Faoe <br /> 2.05.6(3)(b)(iv) Ground Water 17-1 <br /> Introduction 17-1 <br /> Ground Water Inflows to Pits and Drawdowns 17-1 <br /> Introduction 17-1 <br /> McWhorter Analysis for Calculating Pit Inflows 17-1 <br /> MODFLOW Analysis for Calculating Pit Inflows and Drawdowns 17-9 <br /> Introduction 17-9 <br /> Model Design 17-10 <br /> Model Calibration 17-13 <br /> Results 17-13 <br /> Removal of Wells and Ponds by Mining 17-27 <br /> Impact of Replaced Spoil Material on Ground Water Flow and <br /> Recharge Capacity 17-27 <br /> Containment of Pit Inflow Pumpage and Impacts on Water Quality 17-29 <br /> Impact of Spoil Water Quality on the Ground and Surface Water Quality 17-30 <br /> Introduction 17-30 <br /> Overburden, Interburden and Underburden Characterization 17-33 <br /> Overburden Material 17-33 <br /> Interburden Material 17-35 <br /> Underburden Material 17-37 <br /> Controls on Ground Water Quality 17-37 <br /> Introduction 17-37 <br /> Mechanisms for Production of Acid 17-37 <br /> Nucla East Core Data 17-40 <br /> Nucla East Water Quality Data 17-42 <br /> Summary 17-44 <br /> Geochemical Modelina 17-44 <br /> Introduction 17-44 <br /> Mineralogic Controls 17-46 <br /> Neutralization Calculations 17-50 <br /> The Effects of Irrigation on the Ground and Surface Water Chemistry 17-52 <br /> i Revised 04/11/88 <br />