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TAB 7 <br />TABLE OF CONTENTS <br />Page <br />PREFACE P-i <br />SECTION 7.1 - SENECA II-W BASELINE HYDROLOGIC DESCRIPTION 1 <br />Regional Hydrogeology 1 <br />Introduction 1 <br />Topography 1 <br />Lithology 1 <br />Geologic Structures 3 <br />Regional Ground Water Recharge, Movement and Discharge 3 <br />Regional Ground Water Quality 3 <br />Site-Specific Hydrogeology 5 <br />Introduction 5 <br />Baseline Ground Water Level S <br />Alluvial Water Levels 8 <br />Wadge Overburden Water Levels 12 <br />Wadge Coal Water Levels 15 <br />Wadge Underburden Water Levels 16 <br />Wolf Creek Coal Water Levels 166 <br />Trout Creek Sandstone Water Levels 18 <br />Potentiometric Surfaces 18 <br />Recharge 20 <br />Hydrologic Boundaries 21 <br />Infiltration and Permeability of the Unsaturated ZoneDischarge 21 <br />Discharge 24 <br />Aquifer Characteristics 28 <br />Ground Water Chemistry 34 <br />Site-Specific Ground Water Chemistry 35 <br />Suspect Ground Water Chemistry 36 <br />Alluvial Aquifers 36 <br />Wadge Overburden Aquifer 45 <br />Wadge Coal Aquifer 48 <br />Wolf Creek Coal Aquifer 52 <br />Ground Water Suitability 56 <br />Present Ground Water Use 56 <br />Potential Ground Water Use 56 <br />Domestic Drinking Water Suitability 58 <br />Aquatic Life Water Suitability 58 <br />i Revised 9/98 <br />