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TABLE OF CONTENTS 1.0 INTRODUCTION..............................................................................................................................1 2.0 SITE BACKGROUND.......................................................................................................................1 2.1 INITIAL SUBSURFACE INVESTIGATION.................................................................................... 1 2.2 UST CLOSURE.................................................................................................................................. 1 2.3 MONITORING WELL INSTALLATION AND SAMPLING..........................................................2 3.0 SUBSURFACE CONDITIONS.........................................................................................................2 4.0 PROPOSED SCOPE OF WORK FOR ADDITIONAL SUBSURFACE INVESTIGATION....3 4.1 LATERAL AND VERTICAL EXTENT OF HYDROCARBON IMPACTS TO GROUNDWATER............4 4.1.1 Shallow Groundwater Investigation...............................................................................................4 4.1.2 Vertical Groundwater Investigation...............................................................................................4 4.2 SHALLOW SOIL BORING SAMPLING..........................................................................................5 4.2.1 Site Preparation..............................................................................................................................5 4.2.2 Fieldwork Preparation....................................................................................................................5 4.2.3 Field Procedures.............................................................................................................................5 4.2.4 Laboratory Analyses......................................................................................................................6 5.0 REPORTING......................................................................................................................................6 6.0 LIMITATIONS...................................................................................................................................6 APPENDICES APPENDIX A—FIGURES Figure 1 —Vicinity Map Figure 2—Site Map Showing Site Features and Well Locations Figure 3 —Cross Section A-A' Figure 4—Groundwater Gradient Map, March 19, 2018 Figure 5 —Site Map Showing Proposed Shallow Borings APPENDIX B—TABLES Table B-1 —Historical Groundwater Monitoring Data Table B-2—Historical Groundwater Gradient Data Table B-3A-D—Soil Analytical Data APPENDIX C—PUBLICLY AVAILABLE INFORMATION(BY OTHERS) Figures from Adjacent Stallworth Automotive Site APPENDIX D—HEALTH AND SAFETY PLAN ii I's il? CONDOR