|From:||Lenny Siegel <email@example.com>|
|Date:||14 Nov 2004 15:57:34 -0000|
|Subject:||[CPEO-BIF] "Measuring the Success of DNAPL Source Zone Treatments"|
For Immediate Release Contact: Roseanne Black, firstname.lastname@example.org
Measuring the Success of DNAPL Source Zone Treatments
The Interstate Technology & Regulatory Council's DNAPLs Team announces publication of Strategies for Monitoring the Performance of DNAPL Source Zone Remedies. The document is intended for state environmental regulators and others interested in learning about approaches to performance monitoring while implementing various in situ technologies for the treatment of dense, nonaqueous-phase liquids (DNAPLs).
The environmental problems associated with DNAPLs are well known-they can be extremely difficult to locate in the subsurface, small amounts of DNAPLs can contaminate large volumes of a groundwater, they are not amenable to conventional groundwater extraction and treatment technologies, and restoration of DNAPL sites to drinking water standards or maximum contaminant levels is considered unattainable. These problems are the foundation of many technical and regulatory barriers to DNAPL cleanup attempts.
Since 1999, ITRC's DNAPLs Team has been trying to ease some of these barriers by informing the regulatory community of developments in innovative approaches to DNAPL source zone characterization and remediation. The team has written four previous documents, providing an overview of the problem and guidance for site characterization, technology selection, and implementation.
Despite the ever-increasing number of field applications of DNAPL removal technologies, many unanswered questions remain regarding the effectiveness of these technologies and how best to measure their performance with respect to site-specific remedial objectives. Currently, there is no clear consensus based on objective guidelines as to the best way to evaluate treatment performance and balance performance objectives against site-specific stratigraphy, measurement uncertainties, regulatory acceptance, and cost. The best approach is for site owners, regulators, and stakeholders to understand the options available and the benefits and limitations of each so that informed decisions can be made. The primary purpose of this document, designated DNAPLs-5, is to provide that knowledge base. It presents a number of ways in which the success or failure in treating a DNAPL source zone has been measured and contains several succinct case studies that cover remedial goals and objectives, performance monitoring and verification, and lessons learned.
Strategies for Monitoring the Performance of DNAPL Source Zone Remedies and other ITRC products can be downloaded from the ITRC Web site at www.itrcweb.org by clicking on "Guidance Documents." To receive a hard-copy ITRC document in the mail, e-mail your request to email@example.com.
ITRC is a state-led group that works to overcome regulatory barriers to the deployment of innovative environmental technologies. ITRC participants come from state regulatory agencies, federal agencies concerned with environmental cleanup, environmental consulting firms, and technology vendors. These diverse experts work together in technical teams to develop documents and training to help regulators develop consistent, streamlined approaches to regulating innovative technologies. ITRC products also help environmental consultants improve the way innovative technologies are deployed.
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Roseanne Black WPI 2020 Kraft Drive, Suite 2200 Blacksburg, VA 24060 (540) 557-6101 firstname.lastname@example.org
-- Lenny Siegel Director, Center for Public Environmental Oversight c/o PSC, 278-A Hope St., Mountain View, CA 94041 Voice: 650/961-8918 or 650/969-1545 Fax: 650/961-8918 http://www.cpeo.org
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