US EPA TechDirect, April 1, 2011
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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  
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TechDirect audience.  
Upcoming Live Internet Seminars  
ITRC Project Risk Management for Site Remediation, April 12,  
2011, 2:00PM-4:15PM EDT (18:00-20:15 GMT). Remediation Risk  
Management (RRM) is a course of action through which all risks  
related to the remediation processes (site investigations,  
remedy selection, execution, and completion) are holistically  
addressed in order to maximize the certainty in the cleanup  
process to protect human health and the environment. Remediation  
decisions to achieve such a goal should be made based on  
threshold criteria on human health and ecological risks, while  
considering all the other potential project risks. Through this  
training course and associated ITRC Technical and Regulatory  
Guidance Document: Project Risk Management for Site Remediation  
(RRM-1, 2011), the ITRC RRM team presents tools and processes  
that can help the site remediation practitioner anticipate, plan  
for, and mitigate many of the most common obstacles to a  
successful site remediation project. Examples of project risks  
include remediation technology feasibility risks; remedy  
selection risks; remedy construction, operation and monitoring  
risks; remedy performance and operations risks; environmental  
impacts of systems during their operation; worker safety risk,  
human health and ecological impacts due to remedy operation; as  
well as costs and schedules risks including funding and  
contracting issues. For more information and to register, see or .  
Community Engagement Activities for Safe Drinking Water, April  
14, 2011, 1:00PM-3:00PM EDT (17:00-19:00 GMT). In this seminar  
sponsored by the Superfund Research Program (SRP), Dr. Laurie  
Reynolds Rardin, SRP funded researcher from Dartmouth College  
will present 'Face-To-Face Communication Empowers Communities to  
Spread the Word.' This presentation will focus on the Dartmouth  
Toxic Metals Superfund Research Program Research Translation  
Core's recently produced 'In Small Doses: Arsenic,' a 10-minute  
movie ( which explains how and why owners  
of private wells in northern New England should check the levels  
of arsenic in their drinking water. By providing this  
information in a visually engaging format, the goal was to  
persuade private well owners to test their wells and put in an  
arsenic remediation system if warranted. Face-to-face  
communication and access to copies of the video proved to be one  
of the best methods of distribution by expanding the delivery  
network and allowing the movie to be shown by local town  
government and public health officials, residents, and on local  
cable channels. Following her presentation, SRP funded  
researcher from UC-Davis Radomir Schmidt will discuss a MTBE  
bioremediation project in Glennville, CA. The project was  
designed to test existing bioreactor technology for potential  
drinking water production. The UC-Davis researchers tested for a  
panel of potential waterborne pathogens. They sought to promote  
a sense of project ownership in local residents through  
information exchange meetings, demonstrations of the  
bioremediation process, and by recruiting locals to help monitor  
the day-to-day running of the bioreactor. For more information  
and to register, see .  
ITRC Incorporating Bioavailability Considerations into the  
Evaluation of Contaminated Sediment Sites, April 26, 2011,  
2:00PM-4:15PM EDT (18:00-20:15 GMT). ITRC's web-based Technical  
and Regulatory Guidance, Incorporating Bioavailability  
Considerations into the Evaluation of Contaminated Sediment  
Sites (Sed-1, 2011) and associated Internet-based training are  
intended to assist state regulators and practitioners with  
understanding and incorporating fundamental concepts of  
bioavailability in contaminated sediment management practices.  
This guidance and training describe how bioavailability  
considerations can be used to evaluate exposure at contaminated  
sediment sites, the mechanisms affecting contaminant  
bioavailability, available tools used to assess bioavailability,  
the proper application of those tools, and how bioavailability  
information can be incorporated into risk-management decisions.  
This guidance and training also contain summaries of case  
studies where bioavailability has been assessed and considered  
in the contaminated sediment remedial decision making process.  
This guidance and training provide insight on how  
bioavailability assessments can be used to understand, mitigate,  
and manage risk at a contaminated sediment site, often at a  
reduced overall project cost. For more information and to  
register, see or .  
ITRC Enhanced Attenuation of Chlorinated Organics: A Site  
Management Tool, April 28, 2011, 11:00AM-1:00PM EDT (15:00-17:00  
GMT). This training on the ITRC Technical and Regulatory  
Guidance for Enhanced Attenuation: Chlorinated Organics (EACO-1,  
2008) describes the transition (the bridge) between aggressive  
remedial actions and MNA and vise versa. Enhanced attenuation  
(EA) is the application of technologies that minimize energy  
input and are sustainable in order to reduce contaminant loading  
and/or increase the attenuation capacity of a contaminated plume  
to progress sites towards established remedial objectives.  
Contaminant loading and attenuation capacity are fundamental to  
sound decisions for remediation of groundwater contamination.  
This training explains how a decision framework which, when  
followed, allows for a smooth transition between more aggressive  
remedial technologies to sustainable remedial alternatives and  
eventually to Monitored Natural Attenuation. This training will  
demonstrate how this decision framework allows regulators and  
practitioners to integrate Enhanced Attenuation into the  
remedial decision process. For more information and to register,  
see or .  
New Documents and Web Resources  
Fact Sheet on Evapotranspiration Cover Systems for Waste  
Containment (EPA 542-F-11-001). EPA's Office of Superfund  
Remediation and Technology Innovation (OSRTI) has prepared a  
28-page fact sheet updating the 2003 fact sheet on  
evapotranspiration (ET) landfill cover systems. The document  
provides information on the regulatory setting for ET covers;  
general considerations in their design, performance, and  
monitoring; and developmental and implementation status as of  
early 2011. Examples of installed ET cover systems are provided  
with supporting performance data, as well as a list of 222 sites  
that have proposed, approved, and installed ET covers (February  
2011, 28 pages). View or download at .  
Alternative Landfill Cover Project Profiles Database. EPA's  
Office of Superfund Remediation and Technology Innovation  
(OSRTI) has updated the project profiles to reflect recent  
developments in the field of alternative landfill covers. The  
website contains informati 
Posted: 03/04/2011 By: Professor Paul Bardos