DNAPL Source Zones
Chlorinated solvents, such as trichloroethene (TCE) and tetrachloroethene (PCE), are released into the subsurface as dense nonaqueous phase liquids (DNAPLs), which can persist for centuries. SERDP and ESTCP efforts have encompassed a range of issues related to DNAPL in the areas of source zone depletion, fractured rock, thermal treatment, in situ chemical oxidation, nanoscale iron, bioremediation, and technology performance evaluation. Tools are being developed that enable site managers to characterize the size and longevity of the contaminated plume, apply cost-effective remediation and monitoring techniques, and predict the duration of site remediation.
| Product | Date Posted |
|---|---|
Bioaugmentation for Groundwater RemediationReference Book This reference book published by Springer reviews the past 10-15 years of research and development that have led to bioaugmentation becoming an effective and accepted remedial technology. Decision-making processes for implementing bioaugmentation, design and cost considerations, and monitoring options are described. The book serves as a reference for environmental remediation professionals seeking to understand, evaluate, and implement bioaugmentation. |
Oct 2012
|
Delivery and Mixing in the Subsurface: Processes and Design Principles for In Situ RemediationReference Book This reference book published by Springer describes the principles of chemical delivery and mixing systems and their design and implementation for effective in situ remediation. It serves as a reference for decision makers, practicing engineers and hydrogeologists who select, design and operate remedial systems, as well as the researchers seeking to improve the current state of the art. |
Mar 2012
|
Thermal Treatment Technologies: Lessons LearnedOn-Demand Video This on-demand video presents lessons learned from a suite of thermal treatment projects, as presented in a short course at the 2011 SERDP and ESTCP Symposium. The course was designed to promote a more comprehensive understanding of thermal treatment technologies and their potential effects, by highlighting the state of the art and recent advances. |
Mar 2012
|
In Situ Chemical Oxidation for Groundwater RemediationReference Book This reference book published by Springer describes the principles and practices of in situ chemical oxidation (ISCO) for groundwater remediation. Chapters are based on a decade of intensive research, development, and demonstrations funded by SERDP, ESTCP, and others, and on lessons learned from commercial field applications. It serves as a reference for decision makers, practicing engineers, and hydrologists who select, design, and operate remedial systems, as well as researchers seeking to improve the state of the art. |
Mar 2011
|
Principles and Practices of In Situ Chemical OxidationOn-Demand Video This on-demand video provides an overview of the in situ chemical oxidation (ISCO) Technology Practices Manual as presented in a short course at the 2010 SERDP and ESTCP Symposium. ISCO case studies as documented in the scientific literature are summarized and various guidance and decision support tools are discussed. Application of the guidance and tools can enhance the site-specific engineering of ISCO for remediation of contaminated groundwater and help ensure more predictable, cost-effective performance. |
May 2011
|
Measurement and Use of Mass Discharge and Mass Flux at Contaminated SitesOn-Demand Video This on-demand video presents a summary of the basic concepts of mass discharge and mass flux, as presented in a short course at the 2010 SERDP and ESTCP Symposium. The course is based on the technology overview document, Use and Measurement of Mass Flux and Mass Discharge, published by the Interstate Technology & Regulatory Council (ITRC). Available measurement and estimation techniques are described, and several case studies of mass flux measurements at contaminated sites are examined. |
May 2011
|
In Situ Chemical Oxidation for Groundwater Remediation – Technology Practices ManualGuidance The ISCO Technology Practices Manual is comprised of a frequently asked questions (FAQ) guide and an interactive protocol with decision support tools and design models. This manual will enable cost-effective application of ISCO technologies to clean up contaminant source zones and groundwater plumes at DoD sites. |
Oct 2010
|
Prediction of Groundwater Quality Improvement Down-Gradient of In Situ Permeable Treatment Barriers and Fully Remediated Source ZonesSoftware and Users Guide The DGCHANGE software is a spreadsheet-based tool, designed to estimate dissolved contaminant concentration reductions with time in near-field monitoring wells down-gradient of permeable treatment barriers. The tool has a corresponding User’s Guide that describes the four worksheets focused on model inputs, a cross-section snapshot, and changes with time at a monitoring well. |
Dec 2008
|
Estimating Cleanup Times Associated with Combining Source-Area Remediation with Monitored Natural AttenuationSoftware and Guidance This Natural Attenuation Software provides a screening tool for users to estimate remediation time frames for monitored natural attenuation (MNA) to lower groundwater contaminant concentrations to regulatory limits and to assist in decision making on the level of source zone treatment in conjunction with MNA, using site-specific remediation objectives. |
Nov 2006
|
Frequently Asked Questions Regarding Management of Chlorinated Solvents in Soils and GroundwaterGuidance and On-Demand Video This Frequently Asked Questions document provides a concise overview of current knowledge regarding the management of subsurface chlorinated solvent releases and is intended to be used as a support tool for making sound management decisions. An on-demand video providing a summary of this material also is available. |
Jul 2008
|
Bioaugmentation for Remediation of Chlorinated Solvents: Technology Development Status and Research NeedsTechnical Report This report summarizes the technical and regulatory status of bioaugmentation for chlorinated ethenes, as of May 2005, and identifies research needs to be addressed to facilitate successful widespread use of the technology. |
Oct 2005
|
State of the Practice Overview: Critical Evaluation of State-of-the-Art In Situ Thermal Treatment Technologies for DNAPL Source Zone TreatmentTechnical Report This report introduces commonly applied in situ thermal technologies including electrical resistance heating (ERH), in situ thermal desorption (ISTD), steam/hot air injection, and in situ soil mixing combined with steam/hot air injection. It summarizes key information gained from the review of 182 thermal applications. |
Feb 2010
|
Tools for Management of Chlorinated Solvent-Contaminated SitesOn-Demand Video This on-demand video provides training on the use and implementation of four decision and management tools for DNAPL source zones. The tools include (1) a screening tool for selecting DNAPL source area remedial technologies; (2) a decision tool for optimizing chlorinated solvent source and plume remediation; (3) a design tool for planning aqueous amendment injection systems; and (4) a tool for using multiple lines of evidence in conjunction with source zone models to assess changes in mass discharge. |
Dec 2009
|
Mass Flux Tool KitModel / Software The Mass Flux Tool Kit is a spreadsheet-based software tool that enables users to learn about different mass flux approaches, calculate mass flux from transect data, and apply mass flux values to manage groundwater plumes. |
Mar 2006
|
Passive Flux MeterGuidance The passive flux meter (PFM) is a self-contained permeable unit that is inserted into a well to measure cumulative water and contaminant fluxes. This protocol describes construction, care, and deployment of the PFM and details a standard operating procedure for the investigation of target analytes in groundwater. |
Apr 2009
|
Symposium & Workshop
Interstate Technology & Regulatory Council: Integrated DNAPL Site Strategy
