US EPATechDirect March 1, 2010
Welcome to TechDirect! March signals the beginning our our 15th   
year delivering TechDirect. We have been very pleased (and   
somewhat surprised) at the continued and steady growth of our   
subscribers over the last 14 years. Since the February 1   
message, TechDirect gained 273 new subscribers for a total of   
35,650. If you feel the service is valuable, please share   
TechDirect with your colleagues. Anyone interested in   
subscribing may do so on CLU-IN at   
. 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  
ITRC Decontamination and Decommissioning of   
Radiologically-Contaminated Facilities - March 4, 2010,   
11:00AM-1:15PM EST (16:00-18:15 GMT). This training introduces   
ITRC's Technical/Regulatory Guidance, Decontamination and   
Decommissioning of Radiologically-Contaminated Facilities   
(RAD-5, 2008), created by ITRC's Radionuclides Team. The   
curriculum is composed of four modules: Introduction and   
Regulatory Basis for Decontamination and Decommissioning (D&D),   
Factors for Implementing D&D, Preliminary Remediation Goal (PRG)   
Calculators, and Case Studies and Lessons Learned. For more   
information and to register, see or .  
ITRC LNAPL Training Parts 1, 2, and 3 - March 9, 11, and 18,   
2010. Light non-aqueous phase liquids (LNAPLs) are organic   
liquids such as gasoline, diesel, and other petroleum   
hydrocarbon products that are immiscible with water and less   
dense than water. LNAPLs are important because they are present   
in the subsurface at thousands of remediation sites across the   
country, and are frequently the focus of assessment and   
remediation efforts. Part 1 of this training course explains how   
LNAPLs behave in the subsurface and examines what controls their   
behavior. Part 1 also explains what LNAPL data can tell you   
about the LNAPL and site conditions. Relevant and practical   
examples are used to illustrate key concepts. Part 2 addresses   
LNAPL characterization and site conceptual model development as   
well as LNAPL recovery evaluation and remedial considerations.   
Specifically, Part 2 discusses key LNAPL and site data, when and   
why those data may be important, and how to get those data. Part   
2 also discusses how to evaluate LNAPL recoverability. Part 3   
uses the LNAPL conceptual site model (LCSM) approach to identify   
the LNAPL concerns or risks and set proper LNAPL remedial   
objectives and technology-specific remediation goals and   
performance metrics. Part 3 also provides an overview of the   
LNAPL remedial technology selection framework. For more   
information and to register, see or .  
Improved Process for Identifying, Prioritizing and Addressing   
Emerging Pollutants - March 25, 2010, 2:00PM-3:30PM EDT   
(18:00-19:30 GMT). As of January 2006, there were more than   
239,000 substances on the Chemical Abstracts Service list of   
regulated chemicals. The production of more than 4,800 of these   
chemicals exceeded 1,000 metric ton/year. This total does not   
include the massive quantities of 'naturally occurring'   
contaminants that may enter the human environment due to   
resource extraction and production such as mining, groundwater   
pumping and agricultural practices. That said, how is it   
possible to identify those contaminants of most environmental   
concern, and then winnow that list further to those contaminants   
most likely to be the foci of attention in future   
mega-contamination sites? In short, how can we identify the   
contaminants most likely to create the next generation of   
Superfund sites? Motivated by this challenge, a workshop of 24   
experts was convened in August 2009 with the express purpose of   
answering this question. The participants were specifically   
chosen to encompass the broad spectrum of disciplines with   
insight into the issue's many different facets, including   
toxicology; pharmacokinetics; pharmacology; risk assessment;   
contaminant fate and transport; chemical bioaccumulation,   
bioavailability and persistence; chemical parameter estimation   
and modeling; analytic chemistry; chemical production, use and   
disposal, and monitoring and assessment technology. It is the   
intent of this seminar to summarize the discussions,   
conclusions, and identification of challenges that have evolved   
(so far) out of the workshop. For more information and to   
register, see .  
New Documents and Web Resources  
Conference Proceedings for International Perspectives on   
Environmental Nanotechnology: Applications and Implications (EPA   
905-R-09-032). This conference was held October 7-9, 2008 in   
Chicago and was attended by almost 200 scientists and engineers   
from 5 continents. Attendees were from governments,   
universities, non-government organizations, and the private   
sector. One of the primary goals for the conference was to   
assemble people from around the world who are working on the   
broad swath of environmental nanotechnology applications and   
implications, in order to advance the robust and prudent   
multidisciplinary approach needed for this new area. Volume 1   
covers environmental applications (remediation, sensing &   
monitoring, and pollution control) of nanotechnology whereas   
volume 2 covers implications (toxicity, fate & transport, and   
risk assessment) of the release of nanomaterials into the   
environment. The proceedings contain papers based on the   
presentations provided during the conference and written by the   
presenting authors. Thus, this treatise presents cutting edge   
environmental nanotechnology research and development and should   
serve as a reference on the topic for years to come (November   
2009, 611 pages). View or download at ... .  
Technology Performance Review: Selecting and Using   
Solidification/Stabilization Treatment for Site Remediation (EPA   
600-R-09-148). Solidification/Stabilization (S/S) is a widely   
used treatment technology to prevent migration and exposure of   
contaminants from a contaminated media (i.e. soil, sludge and   
sediment). Solidification refers to a process that binds a   
contaminated media with a reagent changing its physical   
properties. Stabilization refers to the process that involves a   
chemical reaction that reduces the leachability of a waste. S/S   
treatment and application is primarily used at hazardous waste   
sites. This Technology Performance Review (TPR) includes a   
discussion on several sites, and addresses important factors to   
consider in the selection of S/S treatment. Each S/S case study   
has a brief project description, regulatory status, S/S   
treatment process that includes binder materials used, and a   
summary of the performance data. Estimated treatment costs and   
maintenance activities are also included when available.   
Estimated costs must be adjusted for inflation and current   
material price increases (November 2009, 28 pages). View or   
download at ... .  
Technology News and Trends (EPA 542-N-10-001). This issue   
highlights the use of compound specific isotope analysis (CSIA),   
an environmental forensics technique used to characterize   
Posted: 02/03/2010 By: Professor Paul Bardos