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Re-Revised Groundwater Monitoring Well Construction <br /> Workplan <br /> August 2023 <br /> Table of Contents <br /> Introduction 2 <br /> Site Location 3 <br /> Background 4 <br /> Geologic Setting 5 <br /> Alluvial Fan Deposits 5 <br /> Modesto Formation 5 <br /> Tulare Formation 5 <br /> Non-Water or Non-Freshwater Bearing Formations 6 <br /> Groundwater Levels 10 <br /> Upper Aquifer 10 <br /> Lower Aquifer 10 <br /> Groundwater Flow Directions 11 <br /> Vertical Gradient 14 <br /> Monitoring Well Design Justification 15 <br /> Drilling, Well Construction, and Monitoring 17 <br /> Permitting 17 <br /> Drilling and Logging 17 <br /> Monitoring Well Construction 17 <br /> Well Development 18 <br /> Groundwater Quality Sampling 18 <br /> Surveying 18 <br /> Monitoring Well Completion Report 19 <br /> Figures <br /> Figure 1: Monitoring Well Location..........................................................................................4 <br /> Figure2. Surface Geology.........................................................................................................8 <br /> Figure 3. Corcoran Clay Extent and Thickness.........................................................................9 <br /> Figure4. Base of Fresh Water.................................................................................................10 <br /> Figure 5: Upper Aquifer Spring 2022......................................................................................13 <br /> Figure 6: Lower Aquifer Spring 2022 .....................................................................................14 <br /> Figure 7: Vertical Gradients Between Upper and Lower Aquifers .........................................15 <br /> Figure 8: Typical Nested Monitoring Well Construction Details............................................17 <br /> GEI Consultants, Inc. i <br />