Welcome to TechDirect! Since the July 1 message, TechDirect
gained 211 new subscribers for a total of 28,548. If you feel
the service is valuable, please share TechDirect with your
colleagues. Anyone interested in subscribing may do so on CLU-IN
at http://clu-in.org . All previous issues of TechDirect are
archived there. The TechDirect messages of the past can be
searched by keyword or can be viewed as individual issues.
TechDirect's purpose is to identify new technical, policy and
guidance resources related to the assessment and remediation of
contaminated soil, sediments 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
TechDirect audience.
Upcoming Live Internet Seminars
Ecological Revitalization Case Studies - The Atlas Tack Site and
the Poudre River Site - August 2. This seminar will focus on two
case studies where ecological revitalization principles have
been put into practice. At the Atlas Tack Superfund site,
adjacent fresh and salt water wetlands were heavily contaminated
by discharge and fill of metal plating and enameling waste
emanating from the site. The site is situated approximately 500
m northwest of Buzzards Bay, designated as an Estuary of
National Significance. Ecological enhancement was used as part
of waste site remediation. At the Poudre River Site, polycyclic
aromatic hydrocarbons have been observed in the soils of a
former gas plant, in the groundwater underneath a closed
landfill, and in the sediments of the Poudre River itself. The
cleanup and protection of the Poudre River involves such
intricacies as the creation of a barrier wall, the redirection
and treatment of contaminated ground water, and the replacement
of non-native vegetation with native species. For more
information and to register, see http://clu-in.org/studio .
Use of SADA for Risk Assessment - August 7. Spatial Analysis and
Decision Assistance (SADA; http://www.tiem.utk.edu/~sada/) is
evolving freeware that incorporates tools from environmental
assessment fields into an effective problem-solving environment.
Presenters from EPA and the University of Tennessee will discuss
the features in SADA that can be applied to Human and Ecological
Risk Assessment problems. This seminar goes beyond the general
SADA CLU-IN seminar (archived at:
http://www.clu-in.org/conf/tio/sada_08 ... to show the
specific capabilities of SADA for making these decisions,
including: calculation of site-specific preliminary remediation
goals, exposure modeling for human and eco risk, and
visualization of potential risks and doses. For more information
and to register, see http://clu-in.org/studio .
ITRC Perchlorate: Overview of Issues, Status, and Remedial
Options - August 9. Improved analytical methodology has
increased the known extent of perchlorate contamination in the
U.S. A variety of remediation technologies are currently
commercially available and being used for perchlorate
remediation. This training, based on ITRC's Perchlorate:
Overview of Issues, Status, and Remedial Options (PERC-1),
explains why perchlorate is a hot topic in the environmental
community including up-to-date information on sources,
occurrences, toxicity and exposure, regulatory status and
remediation alternatives. For more information and to register,
see http://www.itrcweb.org or http://clu-in.org/studio .
ITRC Remediation Process Optimization Advanced Training - August
16. Remediation Process Optimization (RPO) is the systematic
evaluation and enhancement of site remediation to ensure that
human health and the environment are being protected over the
long term at minimum risk and cost. The purpose of this ITRC
training is to present an overview of the material covered in
five technical fact sheets that ITRC's RPO Team produced to
enhance site remediation optimization and decision-making. The
training modules provide additional information and techniques
to improve project schedules, effectively manage resources,
emphasize risk, and discuss tools to efficiently cleanup
contaminated sites. For more information and to register, see
http://www.itrcweb.org or http://clu-in.org/studio .
Nanotechnology: Fate and Transport of Engineered Nanomaterials -
August 16. The NIEHS Superfund Basic Research Program (SBRP), in
collaboration with the Environmental Protection Agency (EPA),
presents 'Fate and Transport of Engineered Nanomaterials.' This
seminar is part of a series covering the applications and
implications of nanotechnology as it pertains to the National
Superfund Program. The USEPA Nanotechnology White Paper (2007)
and the National Nanotechnology Initiative draft report (2006)
both highlight the need for examining factors that affect
environmental exposure to manufactured nanomaterials with
emphasis on the fate and transport in environmental media as a
high priority. Richard G. Zepp (Senior Research Scientist,
USEPA/NERL/ERD, Atlanta, GA) will present 'Factors Influencing
Fate and Transport of Selected Nanomaterials in Water and Land,'
with particular emphasis on fullerenes and single wall
nanotubes. Paul Westerhoff (Professor, Civil & Environmental
Engineering, ASU, Tempe, AZ) will explore the fate of
nanomaterials in 'Nanoparticle Interactions During Wastewater
and Water Treatment.' For more information and to register, see
http://clu-in.org/studio .
ITRC Risk Assessment and Risk Management: Determination and
Application of Risk-Based Values - August 23. This training
course describes the development and application of risk-based
screening values. The first module provides a review of key risk
assessment concepts related to risk management. The second
module focuses on the process by which risk-based levels are
derived in different states. The third module examines the
application of risk assessment to remediation operations in two
case studies providing examples of how risk assessment has
actually been implemented, based upon research and case studies
conducted by the ITRC Risk Assessment Resources team. This
training course describes a number of the reasons behind
variations in risk-based screening values and their use in risk
management. For more information and to register, see
http://www.itrcweb.org or http://clu-in.org/studio .
New Documents and Web Resources
Decision Support Tool (DST) Matrix Version 2.0. The Decision
Support Tool (DST) Matrix has been updated in order to stay
current with the evolution of environmental investigation and
remediation technology. DSTs are interactive software tools used
by decision-makers to help answer questions, solve problems, and
support or refute conclusions. They can be incorporated into a
structured decision-making process for environment site
clean-up. The matrix is a table that provides general
information about each DST, such as the types of files that may
be imported to, or exported from, the DST, the characteristics
of applicable sites (contaminants and media) and the functions
it performs. The DST Matrix Version 2.0 includes five new DSTs
in the matrix, one new mini-case study and updates the
information on the 20 DSTs that were included in Version 1.0,
including notes about new features, new versions and
documentation. View and use at
http://www.frtr.gov/decisionsupport/ .
New Cost and Performance Information on Cleanup Technologies.
The Federal Remediation Technologies Roundtable (FRTR) recently
published 38 new case study and technology assessment reports.
These reports document the cost, performance, and lessons
|