US EPA TechDirect, August 1, 2007
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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 .  
Use of SADA for Risk Assessment - August 7. Spatial Analysis and   
Decision Assistance (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: ... 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 .  
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 or .  
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 or .  
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 .  
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 or .  
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 .  
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 
Posted: 01/08/2007 By: Professor Paul Bardos