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[SWMU B-28 Table of Contents]

SWMU B-28 RCRA Facility Investigation Report, April 2002

Table of Contents

Section 1 - Introduction

1.1   Background and Site Description

1.1.1   CSSA

1.1.2   SWMU B-28

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   Mustard Gas Investigation

1.3.2   Geophysical Survey

1.3.3   Soil Boring and Groundwater Samples

1.3.4   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

2.1.3   Surface Soil Sampling

2.1.4   Subsurface Soil Sampling

2.1.5   Groundwater Sampling

2.1.6   UXO Clearance

2.1.7   Soil Stockpile Disposition Samples

2.2   Results and Comparisons

2.2.1   Geophysical Survey

2.2.2   Soil Gas Survey

2.2.3   Surface Soil Samples

2.2.4   Subsurface Soil Samples

2.2.5   Groundwater Samples

2.2.6   UXO Clearance

2.2.7   Soil Stockpile Disposition 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 Recovered UXO Items

Appendix B   Analytical Results

Appendix C   Evaluation of Data Quality Objectives Attainment

Appendix D   Data Verification Reports

Appendix E   Site Photographs

Figures

Figure B28-1   Site Location Map

Figure B28-2   Soils and Topographic Map

Figure B28-3   Geologic Setting

Figure B28-4   Sample Location Map

Tables

Table B28-1   Summary of Chemical Constituents Detected in Soil, March 2000

Table B28-2   Summary of Chemical Constituents Detected in Stockpiled Soils, April 2000

Table B28-3   Summary of Chemical Constituents Detected in Sifted Soil Solid Waste Management Unit B-28

Table B28-4   Summary of Metals Levels Above Background in Sifted Soil