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• November 19, 2002

Several aspects of in situ bioremediation (ISB) are characteristic of all sites, no matter what contaminant is being scrutinized. Many characteristics of a site used to determine the efficacy of ISB are also similar, even though contaminants and breakdown products differ. Once a site has been characterized for ISB efficacy and the contaminants of concern and degradation products have been defined, engineered approaches can be designed, pilot-tested, and possibly deployed.

This training presents a decision tree for reviewing, planning, evaluating, and approving ISB systems in the saturated subsurface. It defines site parameters and appropriate ranges of criteria necessary for characterization, testing, design, and monitoring of ISB technologies. The course is based on the ITRC's Systematic Approach to In Situ Bioremediation in Groundwater, Including Decision Trees for In Situ Bioremediation of Nitrates, Carbon Tetrachloride, and Perchlorate (ISB-8, 2002), which describes information needed for any ISB evaluation, provides a flow diagram defining primary decision points, and discusses characteristics used to evaluate monitored natural attenuation or enhanced ISB application as remediation options. It includes examples of how to apply the document, with additional decision trees for nitrate, carbon tetrachloride, and perchlorate.

• Bart Faris, Assessment and Abatement Section, Groundwater Quality Bureau, New Mexico Environment Department (Bart_faris@nmenv.state.nm.us)
• Dr. Eric Nuttall, Department Of Chemical and Nuclear Engineering, University of New Mexico (nuttall@unm.edu)
• Dr. Roy F. Spalding, Department of Agronomy and Horticulture, University of Nebraska (rspalding1@unl.edu)
• Dr. Dimitrios Vlassopoulos, S. S. Papadopulos & Associates, Inc. (dimitri@sspa.com)
• Dr. Ron Buchanan, Jr, Dupont Corporate Remediation Group (Ronald.J.Buchanan@usa.dupont.com)

• Mary Yelken, ITRC Training Program Support (myelken@earthlink.net)

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