| EPA Toxicology Review of TCE |
| On November 3, 2009 EPA released a draft of its Toxicological Review of Trichloroethylene for public comment, with comments due by February 1, 2010. External peer review has not yet been conducted. The document concludes that TCE is carcinogenic in humans by all routes of exposure. The document calculates an inhalation unit risk of 2 x 10-2 per ppm (4 x 10 -6 per ug/m3) based on kidney cancer risk. This number is twice the inhalation unit risk value used by EPA in establishing the Regional Screening Level value for TCE. The document can be found at: |
| Washington DEC Releases Draft VI Guidance |
| On October 16, 2009 the Washington Department of Ecology Toxics Cleanup program released its draft vapor intrusion guidance for public comment. Comments were due November 30, 2009. The document covers a tiered assessment approach, mitigation, and the establishment of media cleanup levels. The document can be found at: |
| Oregon Releases Draft VI Guidance |
| On September 14, 2009 the Oregon DEQ Land Quality Division released a draft Guidance for Assessing and Remediating Vapor Intrusion in Buildings. The document covers investigation guidelines, risk based evaluation, and mitigation. The comment period closed on October 30, 2009 and the draft document can be found at: |
| North Carolina Issues Guidelines for Evaluation of VI |
| The North Carolina Department of Environment and Natural Resources Division of Waste Management issued Supplemental Guidelines for the Evaluation of Structural Vapor Intrusion Potential for Site Assessments and Remedial Actions on November 5, 2009. The document covers screening procedures and sampling guidance and can be found at: |
| Postal Service Issues VI Guidance |
| In September 2009 the U. S. Postal Service issued vapor intrusion guidance to assist its staff in responding to VI concerns at postal facilities. The guidance suggests internal roles and responsibilities for both reactive and preventive approaches. The document can be found at: |
| AEHS West Coast Conference |
| 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. 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: |
| ITRC Classroom VI Training Course |
| 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: ITRC Course |