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[AOC-56 Table of Contents]

Final AOC 56 RFI Report, October 2002

Table of Contents

Section 1 - Introduction

1.1   Background and Site Description

1.1.1   CSSA

1.1.2   AOC 56

1.1.2.1   Site Description

1.1.2.2   Potential Sources of Contamination

1.1.2.3    Site Location

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

2.2   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

Appendices

Appendix A   Analytical Results Summary

Appendix B   Data Verification Report

Appendix C   Evaluation of Data Quality Objectives Attainment

Figures

Figure AOC56-1   Site Location Map

Figure AOC56-2   Soils and Topographic Map

Figure AOC56-3   Geologic Setting

Figure AOC56-4   Sample Location Map

Figure AOC56-5   Electromagnetic Data In-Phase

Figure AOC56-6   Electromagnetic Data Quadrature-Phase

Figure AOC56-7   GPR Profile-7

Figure AOC56-8   GPR Profile-8

Figure AOC56-9   GPR Profile-9

Figure AOC56-10   GPR Profile-12

Tables

Table AOC56-1   Summary of Chemical Constituents Detected in Soil, January and February 2002