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[SWMU B-23A]

Final SWMU B-23A RCRA Facility Investigation Report, July 2003

Table of Contents

Section 1 - Introduction

1.1   Background and Site Description

1.1.1   CSSA

1.1.2   SWMU B-23A

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

2.1.6   Ampoule Samples

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   Ampoule 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   Evaluation of Data Quality Objectives Attainment

Appendix C   Data Verification Reports

Figures

Figure B23A-1   Site Location Map

Figure B23A-2   Soils and Topographic Map

Figure B23A-3   Geologic Setting

Figure B23A-4   Sample Location Map

Figure B23A-5   Photograph of Ampoule Collected from Trench Surface

Tables

Table B23A-1   Summary of Chemical Constituents Detected in Surface Soils, January 2003