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TABLE OF CONTENTS <br />• <br /> 1 0 INTRODUCTION 1 <br /> 2 0 PROJECT BACKGROUND INFORMATION 1 <br /> 2 1 Site Description 1 <br /> 2 2 Site History 1 <br /> 2 3 Well Locations 4 <br /> 3 0 SUMMARY OF INVESTIGATION RESULTS 4 <br /> 3 1 Site Geology 4 <br /> 3 2 Site Hydrogeology 5 <br /> 3 3 Distribution of Petroleum Hydrocarbons in Soil 5 <br /> 3 4 Volume Calculations of Hydrocarbon Containing Soil 6 <br /> 3 4 1 Prior To Excavation 6 <br /> 3 4 2 Following Excavation 8 <br /> 4 0 DISCUSSION 8 <br /> 5 0 RATIONALE FOR CLOSURE 8 <br /> 6 0 REMARKS/SIGNATURES 11 <br /> Tables <br /> TABLE 1 Ground Water Level Data <br /> TABLE 2 Soil Sample Analytical Results From Tank Basin Area <br /> TABLE 3 Soil Sample Analytical Results From Soil Borings <br /> TABLE 4 Ground Water Sample Analytical Results <br /> ]Figures <br /> FIGURE 1 Site Location Map <br /> FIGURE 2 Site Map <br /> FIGURE 3 Soil Sample Locations - October 1991 <br /> FIGURE 4 Soil Boring Location Map <br /> FIGURE S Well Location Map <br /> FIGURE 6 Cross Section Location Map <br /> FIGURE 7 Cross Section A-A' <br /> FIGURE 8 Cross Section B-B' <br /> FIGURE 9 Water Table Contour Map - 11/30/94 <br /> FIGURE 10 Water Table Contour Map - 02/09/95 <br /> FIGURE 11 Concentrations of TPH as Diesel No 6 in Soil 15-17 5 Feet Below Surface Grade <br /> Appendices <br /> APPENDIX A San Joaquin County Environmental Health Division letter <br /> • APPENDIX B Calculations <br /> APPENDIX C Delta's Request for Site Closure Report, dated September 3, 1993 <br /> i <br />