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TABLE OF CONTENTS <br /> 1.0 INTRODUCTION..............................................................................................................................1 <br /> 2.0 SITE BACKGROUND.......................................................................................................................1 <br /> 3.0 SUBSURFACE CONDITIONS.........................................................................................................2 <br /> 4.0 PROPOSED SOIL VAPOR PROBE LOCATIONS.......................................................................2 <br /> 5.0 FIELDWORK ACTIVITIES.............................................................................................................3 <br /> 5.1 SITE PREPARATION........................................................................................................................3 <br /> 5.2 SOIL BORING AND SOIL VAPOR WELL CONSTRUCTION......................................................3 <br /> 5.3 SOIL VAPOR SAMPLING PROCEDURES.....................................................................................3 <br /> 5.4 LABORATORY ANALYSES............................................................................................................4 <br /> 6.0 REPORTING......................................................................................................................................4 <br /> 7.0 LIMITATIONS...................................................................................................................................5 <br /> APPENDICES <br /> APPENDIX A <br /> Figure l —Vicinity Map <br /> Figure 2—Site Map Showing Site Features and Well Locations <br /> Figure 3—Groundwater Surface Map—September 6,2022 <br /> Figure 4—TPH-G Isoconcentration Map—September 7-8,2022 <br /> Figure 5—Benzene in Groundwater—September 7-8,2022 <br /> Figure 6—MTBE in Groundwater—September 7-8,2022 <br /> Figure 7—Site Map with Proposed Boring and Soil Vapor Test Well Locations <br /> Figure 8—Typical Soil Vapor Well Construction Diagram <br /> APPENDIX B <br /> Table A—Cumulative Analytical Results-Soil <br /> Table B-2—Historic Groundwater Monitoring Data in Monitoring Wells <br /> APPENDIX C <br /> Health and Safety Plan <br /> APPENDIX D <br /> September 9,2022, Letter from Central Valley Regional Water Quality Control Board <br /> I <br /> ii <br /> 11 <br /> +i� CONDOR <br />