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Treadvvell&Rolb <br /> ' TABLE OF CONTENTS <br /> 1.0 INTRODUCTION ...............................................................................................................1 <br /> 2.0 BACKGROUND AND DESCRIPTION.............................................................................1 <br /> ' 2.1 Area 2A....................................................................................................................2 <br /> 2.2 Area 2B....................................................................................................................2 <br /> 2.3 Area 3.......................................................................................................................2 <br /> ' 2.4 Area 4.......................................................................................................................3 <br /> 3.0 SOIL AND GROUNDWATER INVESTIGATION...........................................................3 <br /> 3.1 Investigation Methodology......................................................................................3 <br /> 3.1.1 Geophysical Survey.....................................................................................4 <br /> 3.1.2 Direct Push Method.....................................................................................5 <br /> ' 3.1.3 Backhoe Method..........................................................................................7 <br /> 3.1.4 Monitoring Well Installation........................................................................7 <br /> 3.1.5 New Monitoring Well Development ...........................................................8 <br /> ' 3.1.6 Groundwater Sampling Methodology..........................................................8 <br /> 3.2 Area 2A....................................................................................................................8 <br /> ' 3.2.1 Geophysical Survey.....................................................................................8 <br /> 3.2.2 Soil and Grab Groundwater Sampling.........................................................9 <br /> 3.2.3 Groundwater Monitoring Well Development and Sampling.......................9 <br /> 3.3 Area 2B..................................................................................................................10 <br /> 3.3.1 Soil and Grab Groundwater Sampling.......................................................10 <br /> 3.3.2 Groundwater Monitoring Well Development and Sampling.....................10 <br /> t 3.4 Area 3..................... .............................................................................................11 <br /> 3.4.1 Geophysical Survey...................................................................................11 <br /> 3.4.2 Soil and Grab Groundwater Sampling.......................................................11 <br /> ' 3.4.3 Groundwater Monitoring Well Development and Sampling.....................I l <br /> 3.5 Area 4.....................................................................................................................12 <br /> 3.5.1 Soil and Grab Groundwater Sampling.......................................................12 <br /> 4.0 PRELIMINARY ENDANGERMENT ASSESSMENTS.................................................12 <br /> 5.0 FINDINGS AND CONCLUSIONS ..................................................................................12 <br /> FIGURES <br /> ' TABLES <br /> 1 <br />