| Title: |
Green Remediation Best Management Practices: Soil Vapor Extraction & Air Sparging
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| Resource Type: |
document --> public information
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| Country: |
USA
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| Year: |
2010 |
| Availability: |
EPA 542-F-10-007
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| Author 1/Producer: |
US Environmental Protection Agency (US EPA)
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| Author / Producer Type: |
Agency, regulator or other governmental or inter-governmental body
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| Format (e.g. PDF): |
PDF
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EUGRIS Keyword(s): |
Contaminated land-->Remediation options-->In situ treatment technologies
Contaminated land-->Wider impacts / sustainability-->Sustainable / green remediation
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| Short description: |
The EPA Principles
for Greener Cleanups outlines the Agency's policy for evaluating
and minimizing the environmental 'footprint' of activities
undertaken when cleaning up a contaminated site. Use of the BMPs
recommended in EPA's series of green remediation fact sheets can
help project managers and other stakeholders apply the
principles on a routine basis, while maintaining the cleanup
objectives, ensuring protectiveness of a remedy, and improving
its environmental outcome. Historically, approximately
one-quarter of Superfund source control projects have involved
soil vapor extraction (SVE) to remove volatile organic compounds
(VOCs) sorbed to soil in the unsaturated (vadose) zone. Air is
extracted from, and sometimes injected into, the vadose zone to
strip VOCs from the soil and transport the vapors to ex situ
treatment systems for VOC destruction or recovery. Air sparging
(AS) involves injection of air into contaminated groundwater to
drive volatile and semivolatile contaminants into the overlying
vadose zone through volatilization. SVE is commonly implemented
in conjunction with air sparging to remove the generated
vapor-phase contamination from the vadose zone
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Submitted By:
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Professor Paul Bardos WhoDoesWhat?
Last update: 02/05/2010
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