US EPA TechDirect, July 1, 2008
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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   
ITRC Risk Assessment and Risk Management: Determination and    
Application of Risk-Based Values - July 15. 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 .   
A Systematic Approach for Evaluation of Capture Zones at Pump    
and Treat Systems - July 21. This seminar presents a systematic    
approach for the evaluation of capture zones at pump and treat    
systems, and provides an overview of a recently published USEPA    
document on the topic (EPA 600/R-08/003, January 2008). The    
target audience is project managers who review those analyses    
and/or make decisions based on these types of analyses. This    
course will highlight: the importance of capture zone analysis    
during ground water remediation, particularly for sites    
requiring containment; key concepts of capture, such as 'target    
capture zones' and 'converging lines of evidence;' and typical    
errors made in capture zone analysis. Examples will be used to    
demonstrate key aspects of capture zone analysis. For more    
information and to register, see .   
Demystifying the DMA (Demonstration of Method Applicability) -    
July 28. The DMA is critical in evaluating and understanding the    
utility of any real time measurement technology or novel    
approach at a site. In accordance with Triad's goal of managing    
decision uncertainty, a DMA provides an initial look at any    
technology or strategy performance in terms of its ability to    
meet project decision criteria and guide dynamic work    
strategies. This presentation will include an overview of the    
DMA process and provide examples of how DMAs have been    
structured under Triad projects. Examples are expected to    
highlight the multitude of activities that can be considered for    
a DMA while demystifying the process and providing a platform to    
design a DMA for your next Triad project. For more information    
and to register, see .   
ITRC Vapor Intrusion Pathway: A Practical Guideline - July 29.    
The ITRC Vapor Intrusion Team developed the ITRC Technical and    
Regulatory Guidance document Vapor Intrusion Pathway: A    
Practical Guideline (VI-1, 2007), companion document Vapor    
Intrusion Pathway: Investigative Approaches for Typical    
Scenarios (VI-1A, 2007), and this Internet-based training course    
to be used by regulatory agencies and practitioners alike. This    
training course provides an overview of the vapor intrusion    
pathway and information on the framework (evaluation process),    
investigative tools, and mitigation approaches. The training    
course uses typical scenarios to illustrate the process. For    
more information and to register, see or .   
ITRC Decontamination and Decommissioning of    
Radiologically-Contaminated Facilities - August 5. 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 .   
New Documents and Web Resources   
2nd International Workshop on Remote Sensing of Emissions: New    
Technologies and Recent Work. This workshop was held April 1-3,    
2008, and was sponsored by EPA's Office of Air Quality Planning    
and Standards, Office of Research and Development, and Office of    
Solid Waste and Emergency Response. At the workshop, studies    
involving the use of differential absorption light detection and    
ranging systems (DIAL), solar occultation flux (SOF), and    
Fourier transform infrared spectroscopy (FTIR) techniques at    
petroleum related facilities in the Houston, TX area and open    
path techniques for use at other types of facilities were    
discussed (May 2008, 523 pages). View or download at .   
Technical Protocol for Enhanced Anaerobic Bioremediation Using    
Permeable Mulch Biowalls and Bioreactors. Biowall substrates are    
typically low-cost materials (e.g., mulch, compost). The    
substrates are mixed with common construction materials (e.g.,    
sand, gravel) to prevent compaction and maintain permeability.    
Amendments can be added to stimulate both biotic and abiotic    
degradation processes, based on the type of contaminant(s)    
present and the desired degradation pathway(s) to be stimulated.    
The technology can be applied in source areas or use groundwater    
recirculation to capture deeper plumes in an in situ bioreactor    
configuration (May 2008, 302 pages). View or download at .   
Reduce, Reuse, and Recycle Construction and Demolition Materials    
at Land Revitalization Projects. Sustainable reuse of brownfield    
properties includes efforts to reduce the environmental impact    
by reusing and recycling materials generated during building    
construction, demolition, or renovation. Typical construction    
and demolition (C&D) materials include wood, drywall, cardboard,    
brick, concrete, metal, insulation and glass. There are numerous    
opportunities to recover and use C&D materials at brownfields    
and land revitalization sites (June 2008, 8 pages). View or    
download at ... .   
June 2008 State Coalition for Remediation of Drycleaners    
Newsletter. The State Coalition for Remediation of Drycleaners    
(SCRD) produces a newsletter to announce recent events and    
undertakings. The June 2008 issue discusses state and national    
updates, presentations by SCRD members at national conferences,    
state progress on remediation of drycleaning sites, remedial    
technologies employed at SCRD drycleaning sites, and upcoming    
events. View or download at ... .   
Updated Soil Remedia 
Posted: 01/07/2008 By: Professor Paul Bardos