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TABLE OF CONTENTS <br /> PRELIMINARY SITE INVESTIGATION REPORT <br /> 1.0 INTRODUCTION..................................................................................................................... 1 <br /> 1.1 General Objectives............................................................................................................. 1 <br /> 1.2 Project Location and Description....................................................................................... 1 <br /> 2.0 BACKGROUND ......................................................................................................................2 <br /> 3.0 SCOPE OF SERVICES............................................................................................................3 <br /> 3.1 Pre-Field Activities.............................................................................................................3 <br /> 3.2 Field Activities...................................................................................................................3 <br /> 4.0 INVESTIGATIVE METHODS................................................................................................5 <br /> 4.1 Visual Survey.....................................................................................................................5 <br /> 4.2 Geophysical Survey............................................................................................................5 <br /> 4.2.1 GPR Method ......................................................................................................5 <br /> 4.2.2 Electromagnetic Method ..................................................................................5 <br /> 4.3 Soil Borings........................................................................................................................6 <br /> 4.3.1 Soil Sampling Procedures.........................................................................................6 <br /> 4.4 Laboratory Analyses...........................................................................................................6 <br /> 4.5 Quality Assurance and Quality Control Procedures ..........................................................7 <br /> 5.0 INVESTIGATIVE RESULTS..................................................................................................8 <br /> 5.1 Visual Survey.....................................................................................................................8 <br /> 5.2 GPR and EM Geophysical Surveys....................................................................................8 <br /> 5.3 Site Geology.......................................................................................................................8 <br /> 5.4 Soil Analytical Results....................................................................................................... 8 <br /> 6.0 CONCLUSIONS AND RECOMMENDATIONS.................................................................. 10 <br /> 7.0 REPORT LIMITATIONS....................................................................................................... 12 <br /> FIGURES <br /> 1. Vicinity Map <br /> 2. Site Plan <br /> TABLES <br /> 1. Summary of Soil Analytical Results—TPHd,TPHmo, and pH <br /> 2. Summary of Soil Analytical Results—Title 22 Metals <br /> APPENDICES <br /> A. San Joaquin County Environmental Health Department Permit <br /> B. Soil Boring Logs <br /> C. Laboratory Reports and Chain-of-Custody Documentation <br />