Soil vapor extraction pilot study at a Piedmont UST site

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:467764

Widdowson, M A ^[1]; Aelion, C M; Ray, R P ^[2]; Reeves, H W ^[3]

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1. Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Civil Engineering
2. Univ. of South Carolina, Columbia, SC (United States)
3. Northwestern Univ., Evanston, IL (United States). Dept. of Civil Engineering

A pilot study of soil vapor extraction (SVE) at a gasoline-contaminated site in the Piedmont physiographic region of South Carolina is presented. The objective of the pilot study is to determine the efficacy of SVE in remediating petroleum-contaminated Piedmont sites. Soil of the Piedmont region is characterized by fine-grained materials that exhibit a stratified, anisotropic structure, often dominated by zones of low permeability. The pilot remediation project consists of a multiple-well SVE and air sparging system located in the contaminant source area. Hourly measurement of mass extraction rates show elevated hydrocarbon (HC) concentrations during the first hour of operation and a rapid decline to asymptotic values. Time-averaged hydrocarbon mass extraction rates range from 22 to 68 kg HC per day for eight SVE wells operating 6 to 8 h per day. Elevated levels of CO{sub 2} in extracted soil vapors indicate microbial activity contributing to bioremediation at the site.

• OSTI ID: 467764
• Report Number(s): CONF-950483--; ISBN 1-57477-003-9
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
BIODEGRADATION
GASOLINE
HYDROCARBONS
IN-SITU PROCESSING
OIL SPILLS
REMEDIAL ACTION
SOUTH CAROLINA
TANKS
UNDERGROUND STORAGE