Geophysical monitoring of active hydrologic processes as part of the Dynamic Underground Stripping Project

Conference · Fri May 01 04:00:00 EDT 1992

OSTI ID:7114943

Newmark, R L

Lawrence Livermore National Laboratory, in collaboration with University of California at Berkeley and Lawrence Berkeley Laboratory, is conducting the Dynamic Underground Stripping Project (DUSP), an integrated project demonstrating the use of active thermal techniques to remove subsurface organic contamination. Complementary techniques address a number of environmental restoration problems: (1) steam flood strips organic contaminants from permeable zones, (2) electrical heating drives contaminants from less permeable zones into the more permeable zones from which they can be extracted, and (3) geophysical monitoring tracks and images the progress of the thermal fronts, providing feedback and control of the active processes. The first DUSP phase involved combined steam injection and vapor extraction in a clean'' site in the Livermore Valley consisting of unconsolidated alluvial interbeds of clays, sands and gravels. Steam passed rapidly through a high-permeability gravel unit, where in situ temperatures reached 117{degree}C. An integrated program of geophysical monitoring was carried out at the Clean Site. We performed electrical resistance tomography (ERT), seismic tomography (crossborehole), induction tomography, passive seismic monitoring, a variety of different temperature measurement techniques and conventional geophysical well logging.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7114943
• Report Number(s): UCRL-JC-109931; CONF-920851--64; ON: DE92018058
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
CONTROL
DIAGNOSTIC TECHNIQUES
GEOPHYSICAL SURVEYS
HYDROLOGY
LAWRENCE LIVERMORE LABORATORY
MONITORING
NATIONAL ORGANIZATIONS
ORGANIC COMPOUNDS
POLLUTION CONTROL
POROSITY
REMOVAL
SOILS
SURVEYS
TEMPERATURE EFFECTS
TEMPERATURE MEASUREMENT
TOMOGRAPHY
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WELL LOGGING