In March 2007 the Delaware Department of Natural Resources and Environmental Control issued a policy concerning the investigation, risk determination, and remediation for the vapor intrusion pathway. It involves a twelve step process from screening to investigation and remediation. Sites with risks exceeding 1 X 10 -5 or HI of 1.0 must proceed to remediation. The policy can be found at:

The Interstate Technology and Regulatory Council Vapor Intrusion Team will be presenting the web- based training course "Vapor Intrusion Pathway: A Practical Guide" on May 8 from 2:00 PM to 4:15 PM Eastern Time. David Folkes of EnviroGroup Limited is one of the trainers. Registration can be accomplished at:

The Air and Waste Management Association will hold its third vapor intrusion conference " Vapor Intrusion - Learning From the Challenges" on September 26-28 in Providence, RI. Preliminary information on the conference can be found at:

As part of the Twelfth Annual Spring Roundtables on Contaminated Sites the Environmental Law Section of the State Bar of California will include a session on Evaluating and Managing Vapor Intrusion Risks on June 9 in San Diego. David Folkes of EnviroGroup Limited will moderate the session. Information on the roundtable is found at:

On May 10 a Vapor Intrusion Consultant's Day will be held in Brookfield, WI by the Federation of Environmental Technologists, Inc. and the Wisconsin DNR. The seminar announcement can be found at:

EPA and DOE have engaged the Oak Ridge Institute of Science and Education to convene a panel of experts to review the draft document: "Toxicological Review of 1,1,1-Trichloroethane: In Support of Summary Information on the Integrated Risk Information System". There is currently no quantitative information regarding the toxicity of 1,1,1-TCA on IRIS. The review will be conducted on April 20, 2007 in Arlington, VA. The peer review notice is located at:

The draft document can be found at:

On February 7, 2007 IMA Environmental Practice and AIG Environmental co-hosted a seminar "Vapor Intrusion: The Next Great Environmental Challenge" in Denver, CO. The power point presentations from that seminar are available at:

On March 21 and 22, 2007 EPA held a soil gas sampling and analytical methods workshop in conjunction with the American Association for Environmental Health and Sciences conference in San Diego, CA. Topics included probe installation methods, sampling issues affecting soil gas concentrations, field and fixed-based analytical methods for volatile and semi-volatile compounds, vadose zone permeability testing, and the use of passive diffusion samplers and tedlar bags. The presentations can be found at: