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Technical Support
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SOP's
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Case Studies/Surveys
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Industry Resources
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Enhanced Attenuation – Chlorinated Organics
Many sites with chlorinated organic contamination in groundwater throughout the nation have gone through extensive remedial evaluations and actions. The remedial alternatives for many of these sites include high-energy treatments such as pump-and-treat systems. After years of operation, the effectiveness of these high-energy processes has begun to diminish without remedial objectives being met. Other more effective remedial alternatives need to be implemented; however, there is a lack of guidance available to regulators and the environmental community regarding how and when to transition these sites to lower-energy remedial alternatives and eventually to monitored natural attenuation (MNA). To answer this need, the ITRC Enhanced Attenuation: Chlorinated Organics (EACO) Team developed this guidance, which includes a protocol to assist in a smooth transition (or a bridge) between aggressive remedial actions and MNA, and thus the concept of enhanced attenuation (EA) was born.
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Contaminant Focus - Dense Nonaqueous Phase Liquids (DNAPLs)
EPA's Office of Superfund Remediation and Technology Innovation has released a website that compiles available information related to the cleanup of dense nonaqueous-phase liquids (DNAPLs) at hazardous waste sites.
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REMChlor Model - The Remediation Evaluation Model for Chlorinated Solvents
Is an analytical solution for simulating the transient effects of groundwater source and plume remediation. In the analytical method, the contaminant source model is based on a power function relationship between source mass and source discharge, and it can consider partial source remediation at any time after the initial release. The plume model simulates first order sequential decay and production of several species, and the decay rates and parent/daughter yield coefficients are variable functions of time and distance. Cancer risks posed by carcinogenic species in the plume are calculated assuming that the contaminated water is used in a house for drinking, bathing, and other household uses.
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The Twelfth Edition of Treatment Technologies for Site Cleanup: Annual Status Report - September '07
The Twelfth Edition of Treatment Technologies for Site Cleanup: Annual Status Report (ASR) documents the status, achievements, and trends associated with treatment technologies at National Priorities List (NPL) sites for remedy decisions between 1982 and 2005.
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A Framework for Assessing the Sustainability of Monitored Natural Attenuation
A Framework for Assessing the Sustainability of Monitored Natural Attenuation? outlines methodology for assessing the efficiency and sustainability of MNA. As such, it provides environmental managers with a scientific basis for identifying sites where MNA is sustainable and therefore an appropriate part of overall site remediation. Just as importantly, it also helps identify those sites where MNA may not be sustainable and therefore not appropriate for site remediation.
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In-Situ Bioremediation of Chlorinated Ethene DNAPL Source Zones: A Resource Guide
This resource guide provides a compilation of relevant scientific and technical literature on the bioremediation of chlorinated ethene Dense Non-Aqueous Phase Liquids (DNAPLs). In that regard, the resource guide is designed to help regulators, technology practitioners, site owners and others develop a consistent approach to the basic principles, terminology, and technical features of bioremediation.
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State Status in the Implementation of Institutional Controls: Summary of Inventory Findings
This report was published by the Association of State and Territorial Solid Waste Management Officials (ASTSWMO). The State Superfund Focus Group conducted an inventory of the States and Territories to determine how they are approaching the subject of Institutional Controls (ICs). The objective of this research focused on learning "who's doing what" relative to the use, management, tracking, and enforcement of ICs, and any perceived barriers to their implementation, in order to share this information with all the States, Territories, and EPA (June 2007, 15 pages).
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Framework for Metals Risk Assessment
The Framework for Metals Risk Assessment, released on March 8, 2007, outlines key principles about metals and describes how they should be considered in conducting human health and ecological risk assessments.
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A Decision-Making Framework for Cleanup of Sites Impacted with Light
Non-Aqueous Phase Liquids (LNAPL)
A Decision-Making Framework for cleanup of sites impacted with light, non-aqueous phase liquids (LNAPL) has been prepared by the Remediation Technologies Development Forum (RTDF) NAPL Cleanup Alliance to provide a guide to practicable and reasonable approaches for management of LNAPL petroleum hydrocarbons in the subsurface. This unique document describes an innovative consensus-based process to develop a long-term vision for a particular site (e.g., an industrial site for the next 100 years with groundwater standards attained in 125 years), while providing a roadmap that calls for specific goals and endpoints to measure progress during each phase of the LNAPL management project.
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Treatment Technologies for 1,4-Dioxane: Fundamentals and Field Applications
1,4-Dioxane is a solvent stabilizer frequently found at contaminated sites where methyl chloroform (1,1,1-trichloroethane) was used for degreasing. This report profiles the occurrence and properties of 1,4-dioxane and provides a summary of the available remedial technologies. The information presented should prove useful to project managers and other regulatory officials who oversee cleanup of contaminated groundwater, particularly where chlorinated solvents are the principal contaminant.
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USGS Toxic Substances Hydrology Program
A unifying theme of the USGS Toxic Substances Hydrology (Toxics) Program research on point-source contamination is the characterization of the natural response of hydrologic systems to contamination. A holistic approach combined with the long-term nature of the research enables the Toxics Program to assess the potential and limitations of natural-attenuation remediation alternatives and to develop remediation-performance monitoring protocols and methods. These remediation-performance monitoring methods can be applied to contaminated sites where engineered cleanup systems, such as enhanced bioremediation or chemical oxidation systems, have been installed.
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Triad Resource Center
This link contains access to a wide range of documents, including papers, publications, guidance, reports, etc., that provide useful Triad-pertinent information.
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EPA In-Situ Chemical Oxidation Engineering Issue Paper
This issue paper was produced by the EPA Risk Management Research Laboratory and the Engineering Forum. It provides an up-to-date overview of ISCO remediation technology and fundamentals, and is developed based on peer-reviewed literature, EPA reports, web sources, current research, conference proceedings, and other pertinent information.
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Edible Oil Barriers for Treatment of Perchlorate Contaminated Groundwater
The demonstration was conducted at a confidential site in Maryland with a mixed perchlorate and 1,1,1-TCA groundwater plume. The primary objective of this project was to evaluate the cost and performance of an emulsified oil permeable reactive barrier (PRB) to control the migration of perchlorate plumes at DoD installations.
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Protocol for Enhanced In Situ Bioremediation Using Emulsified Edible Oil
Protocol for Enhanced In Situ Bioremediation Using Emulsified Edible Oil (ER-0221). This report was published by the DoD Environmental Security Technology Certification Program (ESTCP). Emulsified edible oils have been used to stimulate in situ anaerobic biodegradation of groundwater contaminants at commercial, industrial and military sites throughout the US. The procedures and applications of emulsified oils for the anaerobic bioremediation of chlorinated solvents are applicable to numerous other anaerobically biodegradable contaminants like nitrates, perchlorates, and energetics (e.g., RDX, TNT). The protocol presented in this document is intended to assist base managers and project engineers in: (1) determining if the emulsified oil process is appropriate for their site; and (2) designing and implementing this technology.
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Website Links
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NAPLANAL
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ISCO Technical & Regulatory Guidance
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Anaerobic Bioremediation of Chlorinated Solvents
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Groundwater Remediation for MTBE and TBA
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EPA: Assessing Contractor Capabilities
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GAO Report: Groundwater Remediation Technologies
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Understanding Innovative Technology Options for Brownfields Ivestigation & Cleanup
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Remediation Technologies Screening Matrix
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In-Situ Bioremediation for Chlorinated Ethene DNAPL Source Zones
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Cost and Performance Report Nanoscale Zero-Valent Iron Technologies For Source Remediation
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Groundwater Sampling and Monitoring with Direct Push Technologies
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EPA On-line Tools for Site Assessment
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In-situ Bioremediation of Chlorinated Hydrocarbons - An Assessment of Projects in California February, 2006
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The Air Force Technology Transfer Program
This web site provides an in-depth look into the history, technology evaluation process, and future focus of the Technology Transfer Program. The objective of the web site is to provide users with simple and easily understood descriptions of successful remedial technologies having undergone the process of formulation, demonstration, and validation. This web site contains the many tools made available through the Technology Transfer Program.
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FRTR Remediation Technology Assessment Reports
Analysis of remedial technologies based on their use at multiple hazardous waste cleanup sites provides information useful to site managers and others involved in remedy selection and implementation. The reports listed below, prepared by Federal agencies and the Interstate Technology and Regulatory Council (ITRC), contain information about the application of a specific technology or about a common contaminant, and provide summary findings based on practical field experience.
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2007 NARPM Annual Training Conference
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Rapid Site Characterization
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NAVFAC's Environmental Interactive Web Training Tools
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In-Situ Remediation Reagent Vendor Presentations
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California In-situ Remediation Design Workshop Presentations - Oct 07
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North Carolina Dry Cleaner Remediation Workshop - June 07
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Vapor Intrusion
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Market Drivers
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Perchlorate Fact Sheet - Dec. 2007
This fact sheet provides a brief summary for perchlorate, including physical and chemical properties; environmental and health impacts; existing federal and state guidelines; detection and treatment methods; and additional sources of information. Perchlorate is a persistent contaminant of increasing concern to the government, private sector, and other organizations and interested parties. Research about perchlorate is ongoing and encompasses health effects and risks, regulatory standards and cleanup levels, degradation processes, and treatment technologies.
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AFCEE Source Zone Initiative
AFCEE/TDV teamed with researchers from Colorado State University and the Colorado School of Mines. The focus of this broad-ranging project to investigate DNAPL source zone fate and transport was to build a set of tools that will assist Air Force remedial project managers and other stakeholders in addressing and successfully meeting this environmental restoration challenge.
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California Governor Arnold Schwarznegger Signs Assembly Bill 422 Into Law
This bill would require that the exposure assessment of any health or ecological risk assessment prepared in conjunction with a response action taken or approved pursuant to the California Superfund Act include the development of reasonable maximum estimates of exposure to volatile organic compounds that may enter structures that are on the site or that are proposed to be constructed on the site and may cause exposure due to accumulation of those volatile organic compounds in the indoor air of those structures.
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FIN47 Poses Hard Questions
Public companies were required to implement FIN 47, and to report any associated charges to earnings, no later than the end of the fiscal year ending after December 15, 2005. From their financial reports, it is apparent that companies are taking different approaches to identifying, estimating, and disclosing environmental liabilities associated with future retirement of fixed assets.
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US Army Active Sites Environmental Restoration Program - Fiscal Year 2007 Program Management Plan
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Army Environmental Cleanup Strategic Plan for FY 08/09
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Leaking Underground Storage Tanks - February 2007
EPA should take steps to better ensure the effective use of public funding for cleanups - United States Government Accountability office.
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Revitalizing America's Mills- November 2006
EPA has released a report entitled "Revitalizing America's Mills: A Report on Brownfields Mills Project. The 32-page report discusses "the challenges faced and solutions found during the EPA-supported revitalization of more
than 350 mill sites throughout the nation.
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Land Revitalization and Reuse
As part of its mission to protect human health and the environment, U.S. EPA is dedicated to revitalizing land by restoring contaminated and potentially contaminated sites to productive economic and greenspace use. Through this web site, you can find a variety of information about revitalization and reuse Information includes revitalization tools and resources, hazardous site inventories with site profiles and information, funding information, and relevant publications and documents, as well as examples of land revitalization projects with a focus on EPA Region 4.
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Estimate of the National Cost for Remediation of MTBE Releases from Existing Leaking Underground Storage Tank Sites
The intent of this paper is to provide a balanced, scientific approach to estimating the national cost for remediation of methyl tertiary butyl ether (MTBE) releases from existing leaking underground storage tank (LUST) sites. The result is an estimated $2.0 billion for the remediation of MTBE releases from existing LUST sites.
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Evidence Growing On Health Risks From TCE; Current Data Are Sufficient For EPA To Finalize Risk Assessment
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EPA Publishes Final Rule On All Appropriate Inquiries
The final rule establishes specific regulatory requirements for conducting all appropriate inquiries into the previous ownership, uses, and environmental conditions of a property for the purposes of qualifying for certain landowner liability protections under CERCLA. Analysis
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Special Committee on Environmental Disclosure, October 2005
The Brownfields redevelopment movement may benefit from this reporting obligation if 'mothballing' – the practice of fencing-off contaminated property indefinitely to delay or avoid cleanup costs – becomes a thing of the past. Indeed, companies may now decide to remediate or sell previously mothballed properties to avoid disclosure of these environmental liabilities in their financial statements.
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Triad
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EPA Report: 2004 Market & Technology Trends
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2005 Defense Base Closure and Realignment Commission Report
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Environmental Liability Disclosure
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Environmental Disclosure Due Diligence
Key stakeholders who rely on corporate financial statements, such as investor organizations and researchers, have long maintained that the financial reporting requirements allow too much flexibility and are too narrow in scope to capture important environmental information. Because most of this “flexibility” involves matters of legal judgment, lawyers are not disinterested bystanders. “Don’t ask, don’t tell” is a legal strategy well known to lawyers that deal with environmental remediation liabilities. But now several new and forthcoming accounting pronouncements from the Financial Accounting Standards Board (FASB) are changing the way many types of environmental matters are reported in corporate financial statements. These changes in generally accepted accounting principles (GAAP) are drawing attention from the Securities and Exchange Commission (SEC) and causing independent financial auditors to scrutinize environmental financial reporting like never before.
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Primer on Mandatory Environmental Disclosure: A Presentation Explaining the Longstanding SEC Regulations as Amplified by Sarbanes Oxley
SEC regulations and authoritative accounting guidance dealing specifically with disclosure of environmental liabilities have been in effect since the 1970s, and have been updated on various occasions throughout the 1980s and 90s. Taken all together, they constitute an impressive body of requirements. Unfortunately, they have not been promulgated in a cohesive fashion, and it has been difficult for environmental practitioners to sort through and comprehend the requirements.
And then came Sarbanes-Oxley. This statute, and its blizzard of implementing SEC regulations, has made it urgent for all environmental practitioners to understand what is required to be reported pursuant to SEC and accounting standards.
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Environmental Liability Disclosure Survey Shows an Array of Inconsistent Practices
The Brattle Group's web-based survey benchmarks current attitudes, practices, challenges, and trends relating to environmental and product liability estimation and disclosure. A summary of the survey, which focuses on the extent to which companies disclose liabilities, define what is “material,” and are aware of recent and proposed changes in disclosure standards, guidance, and procedures.
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Ashland Inc. Announces Possible SEC Civil Action for Environmental Remediation Reserves
On April 25, 2006, SEC staff notified Ashland of the staff's intent to seek authorization to pursue a civil action against Ashland relating to adjustments that reduced the company's environmental remediation reserves for 1999 and 2000.
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GAO – July 2004 ENVIRONMENTAL DISCLOSURE - SEC Should Explore Ways to Improve Tracking and Transparency of Information
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Site Support
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