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The purpose of TechDirect is to identify new technical, policy and
guidance resources related to the assessment and remediation of
contaminated soil and ground water.
Mention of non-EPA documents or presentations does not
constitute a U.S. EPA endorsement of their contents, only an
acknowledgment that they exist and may be relevant to the
Upcoming Internet Seminars
ITRC Radiation Risk Assessment: Updates and Tools, August 5.
This training clarifies the variations between the dose approach
used at some sites and EPA's risk-based approach. It also
elaborates on the methodology used to develop risk-based
remediation goals. For more information and to register, see
http://www.itrcweb.org or http://clu-in.org/studio .
ITRC Characterization and Remediation of Soils at Small
Arms Firing Ranges, August 10. This seminar introduces the
participants to the various physical (including hydraulic), chemical,
and biochemical mechanisms available to treat or stabilize SAFRs
after some unique characterization challenges are overcome. This
training is based on the ITRC document entitled: Technical &
Regulatory Guidance Document for Small Arms Firing Range
Remediation Technologies. For more information and to register,
see http://www.itrcweb.org or http://clu-in.org/studio.
ITRC Systematic Approach to In Situ Bioremediation:
Nitrates, Carbon Tetrachloride, and Perchlorate, September 2.
This training presents a decision tree for reviewing, planning,
evaluating, and approving in situ bioremediation (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. For more information and to
register, see http://www.itrcweb.org or http://clu-in.org/studio .
New Documents and Web Content
Guidance for Obtaining Representative Laboratory Analytical
Subsamples from Particulate Laboratory Samples (EPA
600-R-03-027). This guidance was published by the EPA National
Risk Management Research Laboratory. It provides education and
instruction for managing a potential weakness in environmental
data quality for solid materials. Representative data are the
foundation of correct decisions and effective remedial designs.
This document shows how analytical subsampling is a crucial link
for representative samples. It defines sample representativeness
in terms of the population of interest to the decision, which may or
may not be based on a bulk average. Examples show how careless
subsampling can severely bias analytical results (November 2003,
156 pages). View or download at http://clu-in.org/techpubs.htm .
Performance Monitoring of MNA Remedies for VOCs in
Ground Water (EPA 600-R-04-027). This document provides
technical recommendations regarding the types of monitoring
parameters and analyses useful for evaluating the effectiveness of
the natural attenuation component of ground-water remedial
actions. The information will be helpful during the design of the
performance monitoring plan as well as during its implementation
(April 2004, 92 pages). View or download at
http://www.epa.gov/ada/download/report ... .
Center for Subsurface Modeling Support (CSMoS). This
website is operated by the U.S. EPA National Risk Management
Research Laboratory. The Center for Subsurface Modeling
Support (CSMoS) provides public domain ground-water and
vadose zone modeling software and services to public agencies and
private companies throughout the nation. The primary aims of
CSMoS are to provide direct technical support to EPA and State
decision makers in subsurface model applications and to manage
and support the ground-water models and databases resulting from
the research at NRMRL. This research encompasses the transport
and fate of contaminants in the subsurface, the development of
methodologies for protection and restoration of ground-water
quality, and the evaluation of subsurface remedial technologies.
As a result, a major focus of CSMoS entails coordinating the use of
models for risk assessment, site characterization, remedial
activities, wellhead protection, and Geographic Information
Systems (GIS) application. For more information, see
New and Improved FRTR Remediation Optimization
Information. The Federal Remediation Technologies Roundtable
(FRTR) Remediation Optimization web site was recently
improved. A compilation of 73 FRTR Optimization case studies
are available for the first time. The reports contain information on
the optimization of remedial systems and/or long-term monitoring
programs. Visitors can search these reports by remedial
technology, optimization method, and other criteria. New
additions to the site also include a list of commonly-used acronyms
and terms and a Meetings and Conferences page. Proceedings of
the Site Optimization Conference held June 15-17 in Dallas, TX
will be posted here later this month. The FRTR Remediation
Optimization page was also enhanced with file format and size
information as well as a site navigation pathway that will guide
visitors as they browse the site. To access the FRTR Remediation
Optimization website, see http://www.frtr.gov/optimization .
Cost and Performance Information on Cleanup Technologies
Available. The Federal Remediation Technologies Roundtable
(FRTR) recently compiled 117 new remediation case study and
technology assessment reports documenting the cost, performance,
and lessons learned in implementing a wide range of hazardous
waste cleanup technologies in the field, ranging from large-scale
demonstrations to full-scale applications. With this addition, a
total of 632 reports are now available in four areas - 361 cost and
performance case study reports describing the use of remediation
technologies; 144 reports describing the use of site characterization
and monitoring technologies; 73 case studies describing long-term
monitoring/optimization of remediation technologies; and 54
reports describing the assessments of remediation technologies at
hazardous waste sites. These reports and other related FRTR
information can be accessed at http://www.frtr.gov .
Abstracts of Remediation Case Studies, Volume 8 (EPA
542-R-04-012). This new report, published by the Federal
Remediation Technologies Roundtable (FRTR), is a collection of
abstracts summarizing 19 cost and performance case study reports
on the use of remediation technologies at contaminated sites. This
collection of case studies include 7 projects addressing cleanup of
soil and groundwater using in situ bioremediation technologies, 4
case studies focusing on soil vapor extraction for treatment of
halogenated volatile compounds, and 3 reports covering in situ soil
and groundwater treatment using chemical oxidation/reduction
technologies (June 2004, 109 pages). View or download at
http://clu-in.org/techpubs.htm . For hard copies, contact (800)
490-9198 or fax to (513) 489-8695.
Technology News and Trends - Issue 13 (EPA 542-N-04-004).
This quarterly update is published by the EPA Office of Superfund
Remediation and Technology Innovation. This issue focuses on
Triad applications, reference resources and available training (July