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September 2006
Vapor Intrusion Newsletter
In This Issue:

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EnviroGroup Limited
NRC Review of TCE

The National Research Council of the National Academy of Science has completed its review of the toxicity of trichloroethylene. The report states that “The committee found that the evidence on carcinogenic risk and other health hazards from exposure to trichloroethylene has strengthened since 2001". The Council thus urged federal agencies to finalize their risk assessment procedures so that risk management decisions can be made expeditiously. The 472 page document can be browsed or ordered at the following web site as well as a free executive summary:

Vapor Intrusion Specialty Conference Presentations

The presentations from the September 13-15, 2006 Air and Waste Management Association Specialty Conference “Vapor Intrusion: the Next Great Environmental Challenge” held in Los Angeles are now available at:

New Hampshire Finalizes Its Vapor Intrusion Guidance

In July 2006 the New Hampshire Department of Environmental Services finalized its Vapor Intrusion Guidance. The document includes screening levels and can be found at:

Indiana Draft Vapor Intrusion Pilot Program

The Indiana Office of Land Quality of the Department of Environmental Management has published a draft Vapor Intrusion Pilot Program document. The pilot program is intended to be an interim approach to the evaluation of vapor intrusion and is not required guidance. The document can be found at:

California Has Updated its Schoolscreen Guidance

On July 12, 2006 the California Office of Environmental Health Hazard Assessment updated the spreadsheet included in its Guidance for Assessing Exposures and Health Risks at Existing and Proposed School Sites to correct errors in the previous edition. Vapor intrusion is one of the pathways included. The guidance can be found at:

AWMA Web Vapor Intrusion Seminar

The Air and Waste Management Association will be holding a two hour live introductory “Vapor Intrusion Seminar For Everyone” via the internet on October 18. The seminar will consist of a basic overview of the subject presented by a panel. More information can be found at:

API Vapor Intrusion Website

The American Petroleum Institute has a vapor intrusion website where the API vapor intrusion related publications can be found. The web site can be found at:

AWMA Call For Papers

The Air and Waste Management Association has issued a call for vapor intrusion related papers for its Annual Conference and Exhibition to be held in Pittsburgh, PA on June 26-29, 2007. The abstracts are due by September 29, 2006. The call for abstracts may be viewed at:

phone: 303-790-1340
This newsletter is issued periodically to provide our readers with information on new regulatory and technical developments in the rapidly changing field of vapor intrusion. While every effort is made to ensure that the information and links presented in this newsletter are accurate at the time of publication, they are presented for general information purposes only. Users should independently verify the accuracy and applicability of this information and seek professional advice for any specific sites or purposes. Articles on or links to any document or website do not imply endorsement of that document or website by EnviroGroup. Copyright EnviroGroup Limited 2005. 7009 S. Potomac Street, Centennial, CO 80112.
Please contact us if you have any questions about the topics presented in this newsletter, or vapor intrusion in general. More information about EnviroGroup Limited, including several useful links to vapor intrusion websites, is available at: http://www.envirogroup.com/vaporintrusion.php

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