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EnviroGroup Limited   Vapor Intrusion News - March 2004
In This Issue:

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EPA Vapor Intrusion Attenuation Workshop

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TCE Health Effects

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IRIS Updates - 2004 Agenda

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ITRC Background Document - Vapor Intrusion Issues at Brownfield Sites

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ITRC Vapor Intrusion Team

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AWMA Vapor Intrusion Session

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Midwestern States Risk Assessment Symposium

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EPA Seminar on Vapor Intrusion Now Available on CD Rom

Featured Links:

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Links to State and EPA Vapor Intrusion Websites
EPA Vapor Intrusion Attenuation Workshop
EPA is sponsoring a Vapor Intrusion Attenuation Workshop on March 15-16, in conjunction with the AEHS 14th Annual West Coast Conference on Soil, Sediment, and Water in San Diego, CA. The primary purpose of the workshop is to compare field observations to the groundwater and soil vapor attenuation factors used in the OSWER Vapor Intrusion Guidinace of 2002. The workshop will include approximately 15 to 17 presentations and a number of posters. EnviroGroup will be presenting papers on groundwater attenuation factors, seasonal affects on vapor intrusion, and use of compound ratios to separate indoor sources (background) from vapor intrusion. EPA will present draft guidance on sub-slab vapor testing. More information can be found at:
 
EPA VI Work Shop

TCE Health Effects
EPA's National Center for Environmental Assessment held a Symposium on Recent Scientific Research Related to the Health Effects of Trichloroethylene in Washington, DC on February 26-27, 2003. The symposium consisted of a series of invited presentations on recently published scientific findings related to the health effects of TCE. The focus of this symposium was published primary research, and no summary or conclusions were sought about the health risks of TCE. A transcript of the symposium will be made available on the NCEA Web page (http://www.epa.gov/ncea/) after the meeting. Information regarding this meeting can be found at:
 

NCEA Symposium on TCE Health Effects

IRIS Updates - 2004 Agenda
EPA has announced the 2004 agenda for updating its Integrated Risk Information System (IRIS). IRIS contains the agency's consensus information on human health effects of chemical in the environment. It lists the assessments completed in 2003 and those still underway. Trichloroethylene (TCE) and tetrachloroethylene (PCE), two compounds often at issue at vapor intrusion sites, are listed as underway but needing more time for completion because of complexity. The assessment of 1,1,1-trichloroethane for less than a lifetime exposure duration will also require a longer time frame. The complete agenda can be found at:

IRIS 2004 Agenda

ITRC Background Document - Vapor Intrusion Issues at Brownfield Sites
The Interstate Technology and Regulatory Council (ITRC) has issued a document titled "Vapor Intrusion Issues at Brownfield Sites". The document includes approaches to VI used by California, Washington, New York, and South Carolina as well as Germany. It includes a listing of possible vapor intrusion remedies and their costs. The document is intended to be a resource for stakeholders involved with redevelopment projects and can be found at:

ITRC Brownfields Vapor Intrusion Issues

ITRC Vapor Intrusion Team
ITRC established an Vapor Intrusion team in 2004. The Vapor Intrusion Team will research and gather information on vapor intrusion, including when it needs to be evaluated, sampling and characterization techniques, and remediation technologies. The team plans to generate one informational and decision-assistance technical document, as well as training modules for both internet and classroom training. EnviroGroup is pleased to be part of the ITRC team. For more information, go to:

ITRC Vapor Intrusion Team

AWMA Vapor Intrusion Session
There will be a one day session on June 22 on "Advances in Indoor Air Vapor Intrusion: Guidance and Application" at the Air and Waste Management Association Annual Conference and Exhibition in Indianapolis, IN. More information on this meeting (see Session AB-7d) can be found at:

AWMA June Conference

Midwestern States Risk Assessment Symposium
The Midwestern States Risk Assessment Symposium will include a session on vapor intrusion, focusing on studies of background concentrations, sources of background contaminants, and strategies for addressing background issues. The symposium will be held August 25-27, 2004 in Indianapolis. The call for paper and posters is open through April 1, 2004. For more information, go to:

Midwestern States Risk Assessment Symposium

EPA Seminar on Vapor Intrusion Now Available on CD Rom
EPA held Seminars on Indoor Air Vapor Intrusion in San Francisco, Dallas, and Atlanta from December 2002 -February 2003, focusing on the OSWER Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils. A CD Rom containing the seminar, including detailed presentations on use of the vapor intrusion guidance, as well as mitigation methods and other topics, is now available. The document number is 625C03004 and the CD Rom can be ordered for free at the following web site:

EPA Vapor Intrusion Seminar CD Rom
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