USGS Groundwater Information: Branch of Geophysics
As part of its applied research initiatives in 2001 to 2002, the USGS Office of Ground Water, Branch of Geophysics monitored a remediation pilot study by the U.S. Navy in Florida.
At the Naval Training Center, Orlando, Florida, areas contaminated by volatile organic compounds (VOC) are being injected with pure vegetable oil in a remediation pilot study.
The Branch of Geophysics is testing the use of geophysical methods to monitor the vertical and lateral extent of the injected vegetable oil. Ground-penetrating radar (GPR) data were collected before, during, and after injection of the vegetable oil using a multi-channel radar cart. Borehole electromagnetic (EM) induction logs were collected before and after injection of the vegetable oil. The goal of the GPR and EM-induction surveys was to determine the effectiveness of these methods to identify the location and extent of the injected oil during remediation efforts.
The GPR cart used in this investigation is an emerging technology: it is an advanced, multi-channel radar system that allows the user to rapidly image the radar properties of the near-surface and then to stitch multiple scans together in a radar-mosaic that can be readily imported into common Geographic Information Systems (GIS) platforms. This project has provided the first application of the radar-cart technology to the imaging of a remedial process and is in part the result of a Cooperative Research and Development Agreement between the USGS and Malå Geosciences, Inc., which developed the technology.
This work was funded by the U.S. Navy, with support from the USGS Toxic Substances Hydrology Program.
For more information on this project, please contact the Branch of Geophysics at (860)487-7402.[an error occurred while processing this directive]
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