Laserfiche WebLink
1 r _� <br /> � 4 <br /> TABLE OF CONTENTS <br /> 1 INTRODUCTION.............................................................................................................. 1-1 <br /> 1.1 BACKGROUND .......................................................................................................... 1-1 <br /> 1.2 EXECUTIVE SUMMARY............................................................................................... 1-1 <br /> 1.3 PURPOSE AND SCOPE............................................................................................... 1-4 <br /> 2 CLIMATOLOGICAL, HYDROLOGIC AND GEOLOGIC SETTING.................................. 2-1 <br /> 2.1 CLIMATE .................................................................................................................. 2-1 <br /> 2.1.1 Temperature.............................................................................................. 2-1 <br /> 2.1.2 Precipitation............................................................................................... 2-1 <br /> 2.1.3 Evaporation and Evapotranspiration.......................................................... 2-3 <br /> 2.1.4 Barometric Variation.................................................................................. 2-3 <br /> 2.2 TOPOGRAPHY AND SURFACE WATER DRAINAGE......................................................... 2-6 <br /> 2.2.1 Topography............................................................................................... 2-6 <br /> 2.2.2 Surface Water ........................................................................................... 2-6 <br /> 2.3 GEOLOGY .............................................................................................................. 2-13 <br /> 2.4 DOMESTIC AND COMMUNITY WELLS......................................................................... 2-16 <br /> 3 HYDROGEOLOGY.......................................................................................................... 3-1 <br /> 3.1 GROUNDWATER LEVEL INFORMATION ........................................................................ 3-1 <br /> 3.1.1 Barometric Effects ..................................................................................... 3-1 <br /> 3.1.2 Earth Tide Effects...................................................................................... 3-4 <br /> 3.2 POTENTIOMETRIC DISTRIBUTION AND HYDRAULIC GRADIENTS..................................... 3-4 <br /> 3.2.1 Vertical Hydraulic Gradients ...................................................................... 3-6 <br /> 3.2.2 Lateral Hydraulic Gradients and Groundwater Flow................................... 3-6 <br /> 3.3 INFLUENCE OF FAULT ZONES..................................................................................... 3-9 <br /> 3.4 GROUNDWATER RECHARGE AND DISCHARGE........................................................... 3-1 O <br /> 3.5 HYDRAULIC PARAMETERS....................................................................................... 3-11 <br /> 3.5.1 Transmissivity and Anisotropy................................................................. 3-13 <br /> 3.5.2 Effective Transmissive Thickness and Hydraulic Conductivity................. 3-14 <br /> 3.5.3 Porosity and Effective Porosity................................................................ 3-15 <br /> 3.5.4 Storage Coefficient, Specific Storage and Specific Yield ......................... 3-15 <br /> 3.6 GROUNDWATER CHEMISTRY INFORMATION .............................................................. 3-16 <br /> 4 GROUNDWATER IMPACT ANALYSIS...........................................................................4-1 <br /> 4.1 METHODOLOGY........................................................................................................ 4-1 <br /> 4.2 MODEL PROJECTIONS OF MINE INFLOW AND POTENTIOMETRIC DRAWDOWN................ 4-2 <br /> 4.2.1 Mine Inflow Projections.............................................................................. 4-2 <br /> 4.2.2 Projection of Potentiometric Drawdown from Mining Operations................ 4-4 <br /> 4.3 IMPACTS ON DOMESTIC AND COMMUNITY WELLS........................................................ 4-4 <br /> 4.4 POTENTIAL IMPACTS FROM BLASTING AT THE QUARRY................................................ 4-7 <br /> 5 SUMMARY AND CONCLUSIONS................................................................................... 5-1 <br /> TRANSIT MIX-HITCH RACK RANCH <br /> HYDROGEOLOGY AND IMPACT ANALYSIS <br /> TOC-1 <br />