Welcome to TechDirect! We apologize for the delayed delivery of
this month's message. We experienced technical difficulties with
the ListServ software used to send TechDirect this month that
have been resolved, and you can expect to receive next month's
message on November 1. Since the September 1 message, TechDirect
gained 332 new subscribers for a total of 29,132. 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
What's New with CLU-IN? - October 26. Technology Innovation and
Field Services Division (TIFSD) staff will cover new changes to
the CLU-IN website and discuss proposed improvements.
Participants will also learn about expanded features and new
platforms that are being considered for CLU-IN and our internet
seminar offerings. For more information and to register, see
http://clu-in.org/studio .
ITRC Characterization, Design, Construction and Monitoring of
Bioreactor Landfills - October 11. Bioreactors are landfills
where controlled addition of non-hazardous liquid wastes,
sludges, or water accelerates the decomposition of waste and
landfill gas generation. This training, based on the ITRC's
Characterization, Design, Construction, and Monitoring of
Bioreactor Landfills (ALT-3, 2006), teaches the principles used
to make critical decisions during permitting, operating, and
monitoring a bioreactor landfill. This training also provides a
general understanding of the biological degradation of solid
wastes under aerobic and anaerobic waste conditions and the
degradation products associated with each process. For more
information and to register, see http://www.itrcweb.org or
http://clu-in.org/studio .
Annual Status Report 12th Edition - October 11. EPA is offering
a briefing to review the information and analyses in the Twelfth
Edition of Treatment Technologies for Site Cleanup, Annual
Status Report (known as the 'ASR'). The ASR, released October
1st 2007, offers a unique overview and analysis of remedies used
to cleanup contaminated sites in the United States. Every year
hundreds of remedies are selected to protect human health and
the environment at sites with contaminated soil or groundwater.
The report documents the status and trends of treatment
technologies at NPL sites to help decision-makers better
evaluate different cleanup options. Findings include a
continuing upward trend in the selection of innovative 'in situ'
remedies that treat soil and groundwater without having to
extract them from the ground. Following a presentation on the
findings of the report three senior Program Analysts from EPA's
Office of Superfund Remediation and Technology Innovation will
be available for discussion and to answer your questions. For
more information and to register, see http://clu-in.org/studio .
ITRC Evaluating, Optimizing, or Ending Post-Closure Care at
Municipal Solid Waste Landfills - October 16. This training,
based on ITRC's Technical and Regulatory Guidance: Evaluating,
Optimizing, or Ending Post-Closure Care at Municipal Solid Waste
Landfills Based on Site-Specific Data Evaluations (ALT-4, 2006),
describes a method to evaluate the performance of Post Closure
Care at a landfill and determine when leachate recovery,
landfill gas management, groundwater monitoring, and cap
maintenance can be reduced or even ended based on threats (to
human health and the environment) posed by the closed landfill.
The training and document describe custodial care as those
requirements the property owner must follow after post closure
care has been ended. For more information and to register, see
http://www.itrcweb.org or http://clu-in.org/studio .
ITRC Risk Assessment and Risk Management: Determination and
Application of Risk-Based Values - October 18. 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 .
Nanoparticles and Ecotoxicology - October 18. The NIEHS
Superfund Basic Research Program (SBRP), in collaboration with
the Environmental Protection Agency (EPA), presents
'Nanoparticles and Ecotoxicology.' Dr. Stephen Klaine, Clemson
University, will briefly overview some of the major
considerations involved in assessing ecotoxicology and the
challenges associated with predicting the effects of
nanoparticles in aquatic ecosystems. His talk will focus on
recent work involving multi-walled carbon nanotubes (MWNTs)
interactions with natural organic matter (NOM) in studies using
water fleas (Daphnia magna). Dr. Patrick Larkin, Santa Fe
Community College, will discuss the use of a standard
EPA-approved ecotoxicology test using daphnia with assays using
a newly developed, 2000-gene DNA array for the fathead minnow to
measure the potential toxicity of a reactive nano-iron particle.
Please note the final session in this series will be
'Nanotechnology: Looking Ahead,' on November 8, 2007. For more
information and to register, see http://clu-in.org/studio .
ITRC Remediation Process Optimization Advanced Training -
October 30. 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 .
New Documents and Web Resources
Treatment Technologies for Site Cleanup: Annual Status Report
(ASR), Twelfth Edition (EPA 542-R-07-012). This report,
published by the EPA Office of Superfund Remediation and
Technology Innovation (OSRTI), documents, as of October 2006,
treatment technology applications at more than 1,900 soil and
groundwater cleanup projects at National Priorities List (NPL)
sites. The status of more than 1,200 projects incl
|