US EPA TechDirect October 1, 2007
Welcome to TechDirect! We apologize for the delayed delivery of    
this month's message. We experienced technical difficulties with    
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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 .   
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 or .   
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 .   
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 or .   
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 or .   
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 .   
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 or .   
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 
Posted: 03/10/2007 By: Professor Paul Bardos