HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Switzer, C. Articles by Kosson, D. S. Search for Related Content PubMed Articles by Switzer, C. Articles by Kosson, D. S. GeoRef GeoRef Citation Agricola Articles by Switzer, C. Articles by Kosson, D. S. Related Collections Chlorinated Hydrocarbons Coupled Flow/Transport Models Remediation

SPECIAL SECTION: SAVANNAH RIVER SITE

Soil Vapor Extraction Performance in Layered Vadose Zone Materials

^a Dep. of Civil and Environmental Engineering, Vanderbilt Univ., Box 1831, Station B, Nashville, TN 37235
^b current address: Inst. for Infrastructure and Environment, School of Engineering and Electronics, Univ. of Edinburgh, Edinburgh, UK
^* Corresponding author (david.kosson{at}vanderbilt.edu).

Received 14 November 2005.

A pilot soil vapor extraction (SVE) system was installed at a small landfill within the Savannah River Site to address trichloroethylene (TCE) contamination present in the vadose zone. The SVE system has been operating since September 1999 and numerous tests have been performed on the system. A model was developed to simulate SVE at this site, incorporating the effects of contaminant behavior in a layered subsurface as well as the effects of contaminant diffusion into and out of soil aggregates. The objectives of this study were to: (i) compare the field data from the site with predictions from this mechanistic model; and (ii) establish the case for closure based on field observations and model predictions. A dense non-aqueous-phase liquid TCE source was discovered at the site during the course of operation. Location of this source compares well with the predicted residual source from the application of the diffusion components of the SVE model to soil gas TCE concentration rebound observations. Collectively, the field observations and the model predictions strongly support the observations that a substantial portion of the source contamination at the site has been removed by the SVE system and that the criteria for site closure have been met.

Abbreviations: AS, air sparging • CBRP, C-Area Burning Rubble Pit • DNAPL, dense non-aqueous-phase liquid • NAPL, non-aqueous-phase liquid • SVE, soil vapor extraction • TCE, trichloroethylene.

This article has been cited by other articles:

				J. C. Seaman, B. B. Looney, and M. K. Harris Research in Support of Remediation Activities at the Savannah River Site Vadose Zone J., May 17, 2007; 6(2): 316 - 326. [Abstract] [Full Text] [PDF]