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[AOC-35]

AOC 35 Final RCRA Facility Investigation/Closure Report, October 2002

Table of Contents

Section 1 - Introduction

1.1   Background and Site Description

1.1.1   CSSA

1.1.2   AOC 35

1.2   Site Environmental Setting

1.2.1   Site Soils and Topography

1.2.2   Geology

1.2.3   Hydrology

1.2.4   Cultural Resources

1.2.5   Potential Receptors

1.3   Previous Investigations

1.3.1   Geophysical Survey

1.3.2   Soil Gas Survey

1.4   Closure Standard

Section 2 - Field Investigation

2.1   Field Actions

2.1.1   Geophysical Survey

2.1.2   Soil Gas Survey Samples

2.1.3   Surface Soil Samples

2.1.4   Subsurface Soil Samples

2.1.5   Groundwater Samples

2.2   Results and Comparisons

2.2.1   Geophysical Survey

2.2.2   Soil Gas Survey Samples

2.2.3   Surface Soil Samples

2.2.4   Subsurface Soil Samples

2.2.5   Groundwater Samples

Section 3 - Conclusions and Recommendations

3.1   Conclusions

3.2   Evaluation of Data Quality Objectives Attainment

3.3   Recommendations

3.4   Certification

Appendices

Appendix A   Analytical Results

Appendix b   Evaluation of Data Quality Objectives Attainment Table

Figures

Figure AOC35-1   Site Location Map

Figure AOC35-2   Soils and Topographic Map

Figure AOC35-3   Geologic Setting

Figure AOC35-4   Sample Location Map

Figure AOC35-5   PCE Soil Gas Contour Map

Figure AOC35-6   Geophysical Survey Grid Location Map

Figure AOC35-7   Quadrature Phase Electromagnetic Data

Figure AOC35-8   In-Phase Electromagnetic Data

Figure AOC35-9   Ground Penetrating Radar Profile 41

Figure AOC35-10   Ground Penetrating Radar Profile 44

Figure AOC35-11   Ground Penetrating Radar Profile 45

Figure AOC35-12   Ground Penetrating Radar Profile 48

Tables

Table AOC65–1   AOC-65 Name changes to AOC-65 soil borings