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Geophysical Survey Summary Report for AOC-65, September 2003
AFCEE/ERD QAE Brooks AFB,
Texas F41624-00-D-8024
Task Order 0058
Table of Contents
2.2 Potential Sources of Contamination
2.3 Site Environmental Setting
Section 3 - Geophysical Testing Methodology
3.1 Electrical Resistivity Imaging
3.2 Very Low Frequency Electromagnetics
Section 4 - Geophysical Survey Results
4.4 Seismic Reflection Surveys
4.6 Geophysical Results Summary
Section 5 - Drilling and Well Installation
Section 6 - Conclusions and Recommendations
Appendices
Appendix A Electrical Resistivity Survey Results
Appendix B Microgravity Survey Results
Appendix C Very Low Frequency Electromagnetic Survey Results
Appendix D Seismic Reflection Survey Results
Appendix E Induced Polarization Results
Appendix F Spontaneous Potential Survey Results
Figures
Figure 2.2 AOC-65 Utility Location Map
Figure 3.1 Resistivity Survey Location Map
Figure 3.2 Plot of Depth Versus Size for Anomaly Yielding Gravity Response of 0.002 mGals
Figure 3.3 Microgravity Survey Location Map
Figure 3.4 VLF Survey Location Map
Figure 3.5 Location of Seismic Reflection Surveys
Figure 3.6 IP Survey Location Map
Figure 3.7 SP Survey Location Map
Figure 4.1 Location of Resistivity Imaging Anomalies
Figure 4.2 Predicted Gravity Response for Horizontal Cylinder
Figure 4.3 Predicted Gravity Response for a Faulted Layer
Figure 4.4 Microgravity Anomaly Location Map
Figure 4.5 Location of Glen Rose Limestone/Bexar Shale Faults
Figure 4.6 Location of IP Anomalies
Figure 4.7 Composite Geophysical Results
Figure 5.1 Location of AOC-65 PZs, VEWs and VMPs
Figure 5.2 AOC-65 Geologic Cross-Section
Tables
Table 3.1 Resistivity Survey Summary AOC-65 Treatability Study
Table 3.2 Seismic Reflection Survey Acquisition Parameters AOC-65
Treatability Study
Table 5.1 Drilling Location Rationale AOC-65 Treatability Study
Table 5.2 Summary of Well Construction DetailsAOC65 Treatability Study
2-D |
Two-dimensional |
3-D |
Three-dimensional |
AGI |
Advanced Geosciences, Inc. |
AOC |
Area of concern |
BFZ |
Balcones fault zone |
bgs |
below ground surface |
CDP |
Common depth point |
cm/s2 |
Centimeter per second squared |
COC |
Chemical of concern |
CSSA |
Camp Stanley Storage Activity |
dB |
decibel |
EM |
Electromagnetic |
GMA |
Geophysical Micro Applications |
GPI |
GeoProjects International |
GPR |
Ground penetrating radar |
Hz |
Hertz |
IP |
Induced polarization |
iVi |
Industrial Vehicles Inc. |
KHz |
Kilohertz |
L&R |
LaCoste and Romberg |
mGal |
The centimeter-gram-second unit of acceleration of gravity, equal to 1 cm/s2 |
ms |
millisecond |
NMO |
Normal move-out |
PC |
Personal computer |
PCBs |
Polychlorinated biphenyl |
PCE |
Tetrachloroethene |
PVC |
Polyvinyl chloride |
PZ |
Piezometer |
RCRA |
Resource Conservation and Recovery Act |
RFI |
RCRA Facility Investigation |
RMS |
Root mean square |
SP |
Spontaneous potential |
SVE |
Soil vapor extraction |
SVOC |
Semivolatile organic compounds |
SWMU |
Solid Waste Management Unit |
TCE |
Trichloroethene |
TPH |
Total petroleum hydrocarbon |
TWT |
Two-way-travel |
USDA |
United States Department of Agriculture |
USGS |
United States Geologic Survey |
VEW |
Vapor extraction well |
VLF |
Very low frequency electromagnetics |
VMP |
Vapor monitoring point |
VOC |
Volatile organic compound |
WBS |
Work Breakdown Structure |