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[SWMU B-26]

Table of Contents

Section 1 - Introduction

1.1   Background and Site Description

1.1.1   CSSA

1.1.2   B-26

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   Surface Soil Samples

1.3.3   Subsurface Samples

Section 2 - Delisting Activities

2.1   Test Pit Excavation

2.2   Soil Mound Sampling

Section 3 - Conclusions

3.1   Conclusions and Recommendations

Figures

Figure B26-1   Site Location Map

Figure B26-2   Soils and Topographic Map

Figure B26-3   Geologic Setting

Figure B26-4   Sample Location Map

Figure B26-5   In-Phase Electromagnetic Data

Figure B26-6   Quadrature Phase Electromagnetic Data

Figure B26-7   B-26 Aerial Photographs

Figure B26-8   B-26 Site Location Map

Figure B26-9   B-26 Geologic Setting

Figure B26-10   B-26 Sample Locations

Tables

Table B26-1   Summary of Chemical Constituents in Surface Soils, March 2000

Table B26-2   Summary of Chemical Constituents Detected in Soil Borings, March 2000

Table B26-3   B-26 Summary of Chemical Constituents Detected in Soil Mounds, December 2003

Appendices

Appendix A   Analytical Results Summary

Appendix B   Data Verification Report