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AOC-58 Final RCRA Facility Investigation Report

October 2002

Table of Contents

Section 1 - Introduction

1.1   Background

1.1.1  CSSA

1.1.2  AOC 58

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

1.3  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 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 - Summary Analytical Results

Appendix B - Data Verification Report

Appendix C - Evaluation of Data Quality Objectives Attainment

Figures

Figure AOC58-1  Site Location Map

Figure AOC58-2  Soils and Topographic Map

Figure AOC58-3  Geologic Setting

Figure AOC58-4  Geophysical Survey Grid

Figure AOC58-5  Sample Location Map

Figure AOC58-6  Electromagnetic Data, In-Phase

Figure AOC58-7  Electromagnetic Data, Quadrature Phase

Figure AOC58-8  Ground Penetrating Radar Profile - 15

Figure AOC58-9  Ground Penetrating Radar Profile - 16

Figure AOC58-10  Ground Penetrating Radar Profile - 20

Figure AOC58-11  Ground Penetrating Radar Profile - 26

Tables

Table AOC58-1       Summary of Chemical Constituents Detected in Soils, January and February 2000