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TABLE OF CONTENTS <br /> Page <br /> REMARKS AND SIGNATURES <br /> EXECUTIVE SUMMARY _ 1 <br /> 10 INTRODUCTION _ 2 <br /> 20BACKGROUND 2 <br /> i <br /> 2 1 Site Location and Description 2 <br /> 2 2 Previous Work 2 <br /> 3 0 PROCEDURES 3 <br /> 4 0 RESULTS 3 <br /> 4 1 Depth to Groundwater and Hydraulic Gradient _ 3 <br /> 4 2 Analytical Results 4 <br /> 4 3 Concentration Trends - 4 <br /> 5 0 CONCLUSIONS <br /> 5 1 Hydraulic Gradient <br /> 5 2 Interpretation of Concentration Trends <br /> . 5 2 1 Hypothesis Northeastward Migration of the Contaminant Plwne <br /> 5 2 2 Hypothesis Leaching of Hydrocarbons from Soil <br /> 5 2 3 Hypothesis Leaching Followed by Eastward Migration <br /> 5 3 4 Hypothesis Additional Contaminant Source <br /> 5 3 Status of Encroachment Permit <br /> TABLES <br /> Table 1 Groundwater Elevation Data <br /> Table 2 Analytical Results--Water <br /> FIGURES <br /> Figure 1 Location Map <br /> Figure 2 Site Plan <br /> Figure 3 Hydraulic Gradient,December 11,2001 <br /> Figure 4 TPH-g and Total BTEX Concentrations m VM-2 vs Time <br /> Figure 5 TPI4-g and Total BTEX Concentrations in VM-I vs Time <br /> APPENDICES <br /> APPENDIX A Well Monitor Report <br /> APPENDIX B Laboratory Report <br />