On December 14, 2009 the EPA Office of the Inspector General issued its final report, Lack of Final Guidance on Vapor Intrusion Impedes Efforts to Address Indoor Air Risks. The report recommends that EPA update, finalize, and broaden the scope of its VI guidance as well as provide final toxicity values for trichloroethylene and perchloroethylene. The report can be found at:

On January 14, 2010 the Maine Department of Environmental Protection, Bureau of Remediation and Waste Management, issued its vapor intrusion guidance document. The document can be found at:

The Twentieth Annual Association for Environmental Health and Sciences Meeting and West Coast Conference on Soils, Sediments, and Water will be held in San Diego, CA on March 15-18, 2010. EPA will be chairing an all day vapor intrusion session on March 16 where three new EPA technical documents will be discussed. The vapor intrusion documents to be covered are Background Indoor Air Concentrations, EPA's Vapor Intrusion Database, and Conceptual Model Scenarios. The EPA one day session can be attended by itself for $210. There is also a petroleum vapor intrusion workshop scheduled for the evening of March 16 as well as other vapor intrusion platform sessions on March 15. The preliminary program can be found at the following link:

The Interstate Technology and Regulatory Council will be offering its two day course, Vapor Intrusion Pathway: A Practical Guideline, in Norfolk, Virginia on March 22-23, 2010. Information on the course is found at:

The American Petroleum Institute has placed its Bio Vapor Indoor Vapor Intrusion Model on its website and made it available for free download. The model is applicable to releases of petroleum hydrocarbons to the subsurface and accounts for oxygen-limited aerobic biodegradation. The model can be used either to predict indoor air concentrations or to back calculate source concentrations. The model may be found at:

The Association of State and Territorial Solid Waste Management Officials issued a six page status report on petroleum vapor intrusion in January 2010. The report can be found at:

Dr. Atul Salhotra of Gannett Fleming, Inc. is presenting a one day course, Science, Regulation, and Case Studies on Indoor Vapor Intrusion Pathways, on February 16, 2010 in East Lansing, MI. The announcement of the course is found at:

The Air and Waste Management Association will be holding a Vapor Intrusion 2010 conference in Chicago, IL on September 29-30, 2010. The deadline for abstract submittal is February 22, 2010. Preliminary information regarding this conference can be found at: