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MN-- <br /> r <br /> 3� <br /> W <br /> :i <br /> La ' <br /> CONTENTS <br /> 5 <br /> LIST OF TABLES <br /> LIST OF FIGURES <br /> t ` CHAPTER 1. INTRODUCTION , . . . <br /> z Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 <br /> s CHAP'T'ER 2. FIELD METHODS 1-1 <br /> Groundwater Monitoring Wells . . . . . , ' 2-I <br /> { Extraction Well . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 <br /> Vapor Extraction Wells 2-4 <br /> Abandonment of Well I . . . 2-4 <br /> .F Drill Cuttings . . . ' . . . . . . . . . 2-6 <br /> Step-Drawdown Test . . . . . , 2-6 <br /> a w Trenching and Piping . . . . . 2-6 <br /> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7 <br /> CHANTER 3. HYDROGEOLOGY . . . . . . . . 3-I <br /> Regional Geology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> r <br /> 113Regional Groundwater Flow 3-I <br /> Site Geology 3-1 <br /> Groundwater Gradient . . , . . . . . . 3-2 <br /> . � Site HydrogeoIogy 3-2 <br /> CHAT'T'ER 4. FIELD . . . . . . . . . . . . . . . . . . . . . . . . 3-7 <br /> ANALYTICAL RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 <br /> CHAPTER 5. INTERPRETATIONS AND CONCLUSIONS . . . . . . . . . . . . . . . . . 5-1 <br /> 1 <br /> APPENDIX A. BOREHOLE LOGS <br /> A-I <br /> ,. o <br /> APPENDIX B. EXTRACTION WELL GRAIN SIZE ANALYSIS . . . . . . . . . . . . B-I <br /> APPENDIX C. AQUIFER TEST DATA <br /> . . . . . . . . . . . . . . . . . . . . C-1 <br /> APPENDIX D. ANALYTICAL RESULT'. . . . . . . . . . . . . . . . . . . . <br /> D-I <br /> r a-�• <br />