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Final AOC-50 RCRA Facility Investigation Report, December 2002

Table of Contents

Section 1 - Introduction

1.1   Background and Site Description

1.1.1   CSSA

1.1.2   AOC 50

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

1.4   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

2.1.6    Waste Characterization 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

2.2.6    Waste Characterization Samples

Section 3 - Conclusions and Recommendations

3.1   Conclusions

3.2   Evaluation of Data Quality Objectives Attainment

3.3   Recommendations

Appendices

Appendix A- Summary of Analytical Results

Appendix B- Data Verification Report

Appendix C- Evaluation of Data Quality Objectives Attainment

Figures

Figure AOC50-1  Site Location Map

Figure AOC50-2  Soils and Topographic Map

Figure AOC50-3  Geologic Setting

Figure AOC50-4  Geophysical Survey Grid Location Map

Figure AOC50-5  Sample Location Map

Figure AOC50-6  In-Phase Electromagnetic Data

Figure AOC50-7  Quadrature Phase Electromagnetic Data

Figure AOC50-8  Ground Penetrating Radar Profile 11

Figure AOC50-9  Ground Penetrating Radar Profile 14

Tables