The feasibility and effectiveness of soil vapor extraction (SVE) -based remediation technologies is being addressed at a petroleum-contaminated site in the Piedmont region of South Carolina through a multi-disciplinary research program. The program objective is to gain better understand of mechanisms governing remediation of contaminated soil by SVE-based techniques. Baseline data collection of physical, chemical, and microbial properties is augmented by mathematical modeling of the processes. A pilot-scale remediation system has been designed to allow evaluation of SVE-based systems within Piedmont materials. System off-gas and soil vapor will be monitored to delineate which physical and microbial treatment processes contribute to in situ voc removal.