Non-Aqueous Phase Liquid (NAPL) Cleanup Alliance Latest Developments
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About the Non-Aqueous Phase Liquid (NAPL) Cleanup Alliance

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The Alliance's Mission

The Alliance's mission is to develop an improved scientific and technical approach to remediation of groundwater and soil at sites contaminated by petroleum hydrocarbons at private industrial and government facilities. These facilities include petroleum refineries, shipping terminals, pipelines, and airports. Remediation of these sites has focused on 1) installation and operation of pump-and-treat systems to hydraulically control and treat the groundwater and remove accessible product, 2) installation and operation of soil vapor-extraction systems to remove volatile organic compounds in the vadose zone, and 3) installation of impermeable barriers to prevent off-site migration. The experience of the last fifteen years indicates that remediation of these sites will take many years using existing approaches and technologies without significant risk reduction benefits. The Alliance will address the need for more effective alternatives, which focus on appreciable risk reduction based upon specific site conditions such as geology and contaminant characteristics.

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The Alliance's Goals

The Alliance's goals are to:

  • Work collaboratively to identify technically practicable, cost-effective solutions to petroleum hydrocarbon contamination problems at groundwater and soil sites.
  • Create and test an improved decision-making framework or strategy, built in scientific principles and the utilization of cost-effective and appropriate technologies, for achieving specific cleanup goals that are acceptable to appropriate regulatory agencies and public interests.
  • Develop a procedure for cleaning up and closing large NAPL sites.
  • Develop a better understanding of the cost and effectiveness of existing, aggressive NAPL removal technologies.
  • Encourage cooperation among its members through sharing technical information and lessons learned in the field.

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The Alliance's Plans

A critical component of the Alliance's activities will involve the evaluation of innovative technologies that can contribute significantly to improving remediation of large-scale NAPL contamination. The Alliance has established a Technical Working Group to plan and implement a project to analyze the mobility and behavior of hydrocarbons at a Casper (WY) site and to evaluate various cost-effective cleanup technologies for potential use at the site. Data from this project will be used as a baseline for developing a decision tree that could be used in other hydrocarbon- contamination scenarios.

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Would You Like More Information?

For more information about the NAPL Cleanup Alliance, please contact the Alliance Co-chairs:

Bob Maxey
U.S. Environmental Protection Agency
Office of Solid Waste (5303W)
Ariel Rios Building
1200 Pennsylvania Avenue, N. W.
Washington, DC 20460
Tel.: 703-308-7273

Mark Lyverse
Chevron (Energy Technology Company)
100 Chevron Way
Richmond, California 94802-0627
Tel.: 510-242-1080
Fax: 510-242-5577

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Remediation Technologies Development Forum
Sponsored by the Technology Innovation Program

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