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SUNDAY MINE COMPLEX- HYDROGEOLOGIC REPORT <br /> CONTENTS <br /> 1.0 INTRODUCTION............................................................................................................. 1 <br /> 1.1 Purpose....................................................................................................................... 1 <br /> 1.2 Site Description............................................................................................................ 1 <br /> 1.3 Report Data Sources and Organization........................................................................ 2 <br /> 2.0 PHYSIOGRAPHIC AND CLIMATIC INFORMATION....................................................... 3 <br /> 3.0 HISTORIC MINING ......................................................................................................... 4 <br /> 4.0 GEOLOGY ...................................................................................................................... 5 <br /> 4.1 Regional Geology ........................................................................................................ 5 <br /> 4.2 Local Geology.............................................................................................................. 9 <br /> 4.3 Geologic Structure......................................................................................................11 <br /> 5.0 SURFACE WATER HYDROLOGY.................................................................................12 <br /> 6.0 WATER USE..................................................................................................................13 <br /> 7.0 HYDROGEOLOGY ........................................................................................................15 <br /> 7.1 Regional Hydrogeology...............................................................................................15 <br /> 8.0 SMC HYDROGEOLOGY................................................................................................21 <br /> 8.1 Physical Description....................................................................................................21 <br /> 8.2 Groundwater Occurrence at the SMC.........................................................................22 <br /> 8.2.1 Denison Data.......................................................................................................23 <br /> 8.2.2 EFR and PRM Data .............................................................................................25 <br /> 9.0 MONITORING WELL PROGRAM ..................................................................................26 <br /> 9.1 Well Installation...........................................................................................................26 <br /> 9.1.1 MW-SUN1 ...........................................................................................................27 <br /> 9.1.2 MW-SUN2 ...........................................................................................................28 <br /> 9.1.3 MW-SUN3 ...........................................................................................................29 <br /> 9.1.4 MW-TPZ1 ............................................................................................................30 <br /> 10.0 GROUNDWATER MONITORING...................................................................................30 <br /> 10.1 Monitoring Activities....................................................................................................31 <br /> 10.2 Hydraulic Testing.....................................................................................................31 <br /> 10.2 Water Level Measurement..........................................................................................32 <br /> 10.2.1 Monitoring Well Water Levels ..............................................................................32 <br /> Western Water& Land, Inc. ii <br />