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Environmental Health - Toxic Substances

Toxics Program Remediation Activities

Borehole-Geophysical Monitoring of Steam-Injection Remediation Technology

Type

Performance Monitoring, Site Characterization

Location Loring Air Force Base, Maine
Partners
Technology Steam Flushing
Contaminants
  • Chlorinated Solvents
  • Trichloroethane (TCE)
  • Tetrachloroethylene (PCE)
Description
View looking down at research area, Loring Air Force Base, Maine. White tubing is part of the steam injection setup (photo courtesy of U.S. Environmental Protection Agency)
View looking down at research area, Loring Air Force Base, Maine. White tubing is part of the steam injection setup (photo courtesy of U.S. Environmental Protection Agency)
(Click on photo for larger version)

The U.S. Air Force implemented a steam-injection remediation project in fractured limestone contaminated with volatile organic compounds, in order to flush the contaminated ground water into extraction wells and to vaporize volatiles that can then be removed through a vapor extraction system. USGS scientists conducted geophysical borehole surveys to determine if borehole radar could be used to monitor the steam injection remediation. Borehole-radar, temperature, and electromagnetic induction logs and surface-to-borehole radar logs were collected before the steam injection began and shortly after the start of the steam injection in September 2002. Data processing and analysis is underway to explore the use of geophysical methods to image changes in subsurface material properties caused by the heat of the steam.

More Information
Contact John Lane, USGS, Branch of Geophysics, Storrs, Connecticut, jwlane@usgs.gov
Publications
  • Grégoire, C., Lane, J.W., Jr., and Joesten, P.K., 2005, Steam injection pilot study in a contaminated fractured limestone (Maine, USA)—Modeling and analysis of borehole radar reflection data, in Proceedings of the 3rd International Workshop on Advanced Ground Penetrating Radar, Delft, The Netherlands, May 2-4, 2005.
  • Grégoire, C., Lane J.W., Jr., and Joesten, P.K., 2004, Application of borehole radar for monitoring stream-enhanced remediation of a contaminated site in fractured limestone, Maine, USA, in Hack, R., Azzam, R., and Charlier, R., eds., Engineering Geology for Infrastructure Planning in Europe—a European Perspective, Lecture Notes in Earth Sciences: Berlin, Germany, Springer-Verlag, p. 385-392.
  • Grégoire, C., Lane, J.W., Jr., and Loesten, P.K., 2004, The use of borehole radar tomography to monitor a stream injection pilot study in a contaminated fractured limestone, in EAGE (European Association of Geoscientists and Engineers) Near Surface Geophysics meeting, Utrecht, The Netherlands, September 6-9, 2004: Houton, The Netherlands, European Association of Geoscientists and Engineers, 4 p.
Links

Geophysical Methods Research

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Page Last Modified: Tuesday, 04-Aug-2015 15:47:23 EDT