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Mining and Reclamation Permit Amend.-M-1988-112 <br /> Groundwater Management Plan Battle Mountain Resources,Inc. <br /> TABLE OF CONTENTS <br /> 1.0 INTRODUCTION 1 <br /> 2.0 BACKGROUND 1 <br /> 3.0 SITE GEOLOGY 2 <br /> 4.0 SITE HYDROGEOLOGY 3 <br /> 4.1 Hydrologic Units 3 <br /> 4.2 Aquifer Properties 4 <br /> 4.3 Aquifer Recharge and Discharge 6 <br /> 5.0 CURRENT GROUNDWATER MANAGEMENT 8 <br /> 6.0 ASSESSMENT OF HYDRAULIC CONTROL OPTIONS FOR WEST PIT <br /> GROUNDWATER MANAGEMENT 9 <br /> 7.0 GROUNDWATER MANAGEMENT WITH A SLURRY WALL 11 <br /> 7.1 Slurry Wall Design Parameters 11 <br /> 7.2 Slurry Wall Operational Parameters for Groundwater Management 11 <br /> 7.3 Simulated Groundwater Impacts 12 <br /> 8.0 PROPOSED MONITORING PROGRAM 12 <br /> 9.0 REFERENCES 15 <br /> TABLES <br /> Table G-1 Monitoring Well Data, West Pit, Former San Luis Mine <br /> Table G-2 Summary of Hydrologic Test Results, West Pit <br /> Table G-3 Comparison of Measure Point Elevations NAVD 88 vs NGVD 29, West <br /> Pit, San Luis Project, Colorado <br /> FIGURES <br /> Figure G-1 Site Map - Slurry Wall and Current and Proposed Monitoring Well <br /> Network <br /> Figure G-2 Geologic Map of the Study Area, After Wallace and Soulierre (1996) <br /> Figure G-3 Monitoring Well Network and Hydrologic Test Locations <br /> Figure G-4 Potentiometric Surface-1999, West Pit Groundwater System Figure G-5 <br /> Potentiometric Surface-2017 West Pit Groundwater System <br /> Figure G-6 Potentiometric Surface Map of the Shallow Water Table Aquifer, Fourth <br /> Quarter, 2024, West Pit, San Luis Mine <br /> April 2015 i Engineering Analytics,Inc. <br />