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North County RC&SL i Public Works/Solid Waste <br />First Semiannual 2024 Groundwater Monitoring ©2024 COUNTY of San Joaquin. All Rights Reserved. <br />CONTENTS_________________________________________________ <br /> <br />INTRODUCTION ............................................................................................................. 1 <br />General ................................................................................................................. 1 <br />Geology ................................................................................................................ 1 <br />Construction ......................................................................................................... 1 <br />COMPLIANCE SUMMARY ............................................................................................. 2 <br />MONITORING PROGRAM ............................................................................................. 5 <br />Groundwater ......................................................................................................... 5 <br />Storm Water ......................................................................................................... 6 <br />Surface Water ....................................................................................................... 6 <br />Unsaturated Zone ................................................................................................. 6 <br />Leachate ............................................................................................................... 6 <br />WATER QUALITY PROTECTION STANDARD .............................................................. 6 <br />Constituents of Concern ....................................................................................... 6 <br />Concentration Limits ............................................................................................. 7 <br />Point of Compliance ............................................................................................. 7 <br />Compliance Period ............................................................................................... 7 <br />Statistical Analysis of Groundwater Data .............................................................. 7 <br />Landfill Gas Collection System ............................................................................. 8 <br />MONITORING RESULTS ............................................................................................... 8 <br />Groundwater ......................................................................................................... 8 <br />Storm Water ......................................................................................................... 9 <br />Surface Water ....................................................................................................... 9 <br />Unsaturated Zone (Lysimeters) ............................................................................ 9 <br />Soil Gas ................................................................................................................ 9 <br />Leachate ............................................................................................................. 10 <br />Secondary Sump Monitoring .............................................................................. 10 <br />GROUNDWATER DIRECTION AND FLOW RATE ...................................................... 10 <br />STANDARD OBSERVATIONS ..................................................................................... 11 <br />RUN-OFF/RUN-ON FACILITIES ................................................................................... 11 <br />LEACHATE COLLECTION AND RECOVERY SYSTEM .............................................. 11 <br />Facilities ............................................................................................................. 12 <br />Normal Operation ............................................................................................... 12 <br />Leachate System Testing ................................................................................... 13 <br />HISTORICAL TIME SERIES PLOTS AND STIFF DIAGRAMS ..................................... 14 <br />FACILITY MONITORING .............................................................................................. 14 <br /> <br />