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AOC 42 Final RCRA Facility Investigation Report

 October 2002

Table of Contents

Section 1 Introduction

1.1    Background and Site Description

    1.1.1    CSSA

    1.1.2    AOC-42

        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

    1.3.1    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

Appendices

Appendix A      Summary of Analytical Results 

Appendix B      Soil Boring Logs 

Appendix C      Data Verification Reports

Appendix D      Evaluation of Data Quality Objectives Attainment 

Figures

Figure AOC42-1 Site Location Map

Figure AOC42-2 Soils and Topographic Map

Figure AOC42-3 Geologic Setting

Figure AOC42-4 Sample Location Map

Figure AOC42-5 PCE Soil Gas Contour Map

Figure AOC42-6 Geophysical Survey Grid Area with Ground Penetrating Radar Profiles

Figure AOC42-7 Electromagnetic Data, In-Phase

Figure AOC42-8 Electromagnetic Data, Quadrature Phase

Figure AOC42-9 Ground Penetrating Radar Profile - 15

Figure AOC42-10 Ground Penetrating Radar Profile - 17

Figure AOC42-11 Ground Penetrating Radar Profile - 35

Figure AOC42-12 Ground Penetrating Radar Profile - 37

Figure AOC42-13 Overview of In-Phase EM Data in AOC-42 Area

Tables

Table AOC42-1 Summary of Chemical Constituents Detected in Surface Soil, March 2001

Table AOC42-2 Summary of Chemical Constituents Detected in Subsurface Soil and Rock, March 2001