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CONTENTS <br /> INTRODUCTION ........................................................................................................................3 <br /> General...........................................................................................................................3 <br /> Geology and Hydrogeology.............................................................................................3 <br /> Compliance History Summary. .4 <br /> Groundwater...................................................................................................................9 <br /> SurfaceWater...............................................................................................................10 <br /> VadoseZone Soil Gas ..................................................................................................11 <br /> Statistical Analysis of Groundwater Samples.................................................................11 <br /> MONITORING RESULTS.........................................................................................................12 <br /> Groundwater.................................................................................................................12 <br /> Surfacewater................................................................................................................16 <br /> Unsaturated Zone Soil Pore Gas...................................................................................16 <br /> Groundwater Direction and Flow Rate...........................................................................17 <br /> STANDARD OBSERVATIONS.................................................................................................18 <br /> RUN-ON AND -OFF SITE COMPONENTS OR CONTROL MEASURES .................................18 <br /> ANNUALSUMMARY................................................................................................................19 <br /> HISTORICAL TIME SERIES PLOTS........................................................................................21 <br /> MONITORING ANALYTICAL DATA (ELECTRONIC MEDIA) ...................................................27 <br /> TABLES <br /> Table 1 -Groundwater Monitoring Results, Shallow Aquifer <br /> Table 2 - Groundwater Monitoring Results, Deep Aquifer <br /> Table 3—Trend Analysis Results <br /> Table 4— Unsaturated Zone Soil Pore Gas TO-15 Monitoring Results <br /> FIGURES <br /> Figure 1 - Landfill Vicinity Map <br /> Figure 2 - Groundwater Contour and Sampling Location Map, Shallow Aquifer <br /> Figure 3 - Groundwater Contour and Sampling Location Map, Deep Aquifer <br /> Figure 4—Well Location Map <br /> Figure 5— PCE Contour Map <br /> Figure 6— ISO Settlement Map <br /> i <br /> Corral Hollow Sanitary Landfill ' Department of Public Works/Solid Waste <br /> 4th Quarter and Annual 2013 Groundwater Monitoring County of San Joaquin—January 15,2014 <br />