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Table of Contents <br /> ' Page <br /> ' Introduction 1 <br /> Background 2 <br /> Sequence of field operations 3 <br /> Exploratory test hole construction 5 <br /> Monitoring well installation and development protocol 5 <br /> Product testing in exploratory test holes and <br /> monitoring wells 8 <br /> Groundwater sample collection 8 <br /> Site geology and hydrogeology 9 <br /> Product thickness sampling results 9 <br /> Laboratory analyses 14 <br /> ' Conclusions 20 <br /> ' Work plan for further assessment 20 <br /> List of Figures: <br /> ' Figure 1 - Test hole and monitoring well locations 4 <br /> Figure 2 - Groundwater elevation measurements <br /> ' March 23, 1988 10 <br /> Figure 3 - Product thickness measurements March 23, <br /> 1988 15 <br /> ' Figure 4 - Benzene concentrations March 11, 1988 18 <br /> List of Tables: <br /> ' Table 1 - Surveyed monitoring well and test hole <br /> elevations 7 <br /> ' Table 2 - Computed groundwater elevations 11 <br /> Table 3 - Hydrocarbon thickness measurements 12 <br /> Table 4 - Water quality and product sample results 16 <br /> ' List of Appendices: <br /> Appendix A - Tank and pipeline testing reports <br /> Appendix B - Exploratory boring logs <br /> Appendix C - Well construction details <br /> Appendix D - Analytical water quality results and <br /> chain of custody <br />