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}' Former Beacon Station No. 474 May 15, 2000 <br /> Stockton _California Results of Additional Subsurface Investigation <br /> i <br /> CONTENTS <br /> INTRODUCTION............................................................................................................. 1 <br /> SITE DESCRIPTION AND BACKGROUND................................................................. 2 <br /> ADDITIONAL SUBSURFACE INVESTIGATION.......................................................... 3 <br /> CONCLUSIONS ............................................................................................................... 6 <br /> DISTRIBUTION............................................................................................................... 9 <br /> REFERENCES.................................................................................................................. 9 <br /> FIGURES <br /> FIGURE 1: Site Vicinity Map <br /> FIGURE 2: Site Plan <br /> FIGURE 3: Benzene Isoconcentration Map <br /> I <br /> TABLES <br /> 1 TABLE 1: Soil Analytical Results <br /> TABLE 2: Groundwater Analytical Results <br /> TABLE 3: Quarterly Monitoring Groundwater Data <br /> APPENDICES <br /> APPENDIX A: San Joaquin County Well Permits <br /> APPENDIX B: Horizon Environmental Inc. Field Methods and Procedures <br /> APPENDIX C: Boring/Well Completion Logs and Boring Log Symbol Key <br /> APPENDIX D: Analytical Data Reports <br /> APPENDIX E: TPS Technologies Non-Hazardous Soils Manifest <br /> APPENDIX F: Monitoring Well Data Sheets <br /> APPENDIX G: Well Head Elevation Field Data <br /> 1474.22.rpt ii HORIZON ENVIRONMENTAL INC. <br />