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TABLE OF CONTENTS <br /> 1.0 INTRODUCTION...............................................................................................................................1 <br /> 2.0 FACILITY DESCRIPTION...............................................................................................................1 <br /> 3.0 PHYSICAL AND HYDROLOGICAL SETTING............................................................................1 <br /> 4.0 HYDROGEOLOGY............................................................................................................................2 <br /> 5.0 THE GROUNDWATER QUALITY DATABASE...........................................................................3 <br /> 6.0 HYDROCHEMISTRY........................................................................................................................3 <br /> 7.0 BACKGROUND GROUNDWATER QUALITY.............................................................................4 <br /> 7.1 THE BACKGROUND CONCEPT.....................................................................................................4 <br /> 7.1.1 How will the background values be used?......................................................................................5 <br /> 7.1.2 Do we need a temporal or spatial background?..............................................................................5 <br /> 7.1.3 How is the background value to be determined, (e.g.,upgradient wells,historical data,statistical <br /> evaluationof data set)?.............................................................................................................................6 <br /> 7.1.4 What does the background value actually represent(e.g.,pristine vs.present-day vs. <br /> contaminatedupgradient)?.......................................................................................................................7 <br /> 7.1.5 Is this background value appropriate for the area?.........................................................................7 <br /> 7.1.6 Are there potential sources of the contamination in addition to the source of concern?................7 <br /> 7.1.7 Are there physiobiochemical processes that may affect the contaminant concentrations within <br /> thehydrologic environment?....................................................................................................................7 <br /> 8.0 DATA NEEDS FOR DETERMINING USEFUL BACKGROUND GROUNDWATER <br /> VALUES 7 <br /> 9.0 GROUNDWATER GRAB SAMPLING...........................................................................................8 <br /> 9.1 GEOPROBE®GRAB SAMPLING PROGRAM...............................................................................8 <br /> 9.1.1 Oxidation Ponds Background Groundwater Quality Sampling......................................................9 <br /> 9.1.2 Eastside Background Groundwater Quality Sampling...................................................................9 <br /> 10.0 WEST SIDE UPGRADIENT MONITORING NETWORK......................................................._..9 <br /> 10.1 HOLLOW STEM AUGER WELL INSTALLATION PROGRAM...................................................9 <br /> 10.1.1 Two new shallow wells MW-1S and MW-2S.......................................................................10 <br /> 10.1.2 Two new monitoring wells MW-19 and MW-19S................................................................10 <br /> 10.1.3 Close Well MW-4..................................................................................................................10 <br /> 10.2EVALUATION OF BPTC IN THE VICINITY OF MW-10............................................................10 <br /> 11.0 WATER QUALITY SAMPLING....................................................................................................11 <br /> 11.1 GROUNDWATER MONITORING FIELD ACTIVITIES..............................................................I 1 <br /> 11.2GROUNDWATER PARAMETER SUITE.......................................................................................11 <br /> 11.3 EFFLUENT SAMPLING PROGRAM.............................................................................................11 <br /> 11.4SAMPLING SCHEDULE.................................................................................................................11 <br /> 11.51SOTOPE PILOT TESTING PROGRAM........................................................................................11 <br /> 12.0 REPORTING.....................................................................................................................................11 <br /> 13.0 TIME SCHEDULE............................................................................................................................12 <br /> 14.0 LD41TATIONS..................................................................................................................................12 <br /> i, CONDO <br />