[Home] [Master Table of Contents]

[Table of Contents]

AOC 55 RCRA Facility Investigation Report, January 2004

Table of Contents

Section 1 - Introduction

1.1   Background and Site Description

1.1.1   CSSA

1.1.2   AOC 55

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

1.4   Closure Standard

Section 2 - Field Investigation

2.1   Field Actions

2.1.1   Geophysical Survey

2.1.2   Preliminary Site Excavations

2.1.3   Initial Soil Characterization Sampling

2.1.4   Soil Gas Survey Samples

2.1.5   Site Excavations

2.1.6   Soil Samples

2.1.7   Groundwater Samples

2.1.8   Salado Creek Low Water Crossing

2.2   Results and Comparisons

2.2.1   Geophysical Survey

2.2.2   Preliminary Site Excavations

2.2.3   Soil Gas Survey Samples

2.2.4   Site Excavations

2.2.5   Closure Samples

2.2.6   Groundwater Samples

Section 3 - Conclusions and Recommendations

3.1   Conclusions

3.2   Evaluation of Data Quality Objectives

3.3   Recommendations

Appendices

Appendix A   Analytical Results

Appendix B   Photographic Record

Appendix C   Evaluation of Data Quality Objective Attainment Table

Appendix D   Low Water Crossing As-Built Drawing

Figures

Figure 1   Site Location Map

Figure 2   Soils and Topographic Map

Figure 3   Geologic Setting

Figure 4   Geophysics 1

Figure 5   Geophysics 2

Figure 6   Test Trench Locations

Figure 7   Sample Location Map

Tables

Table 2.1   AOC 55 Summary Analytical Results

Table 3.1   95% UCL for Lead

Table 3.2   95% UCL for Zinc