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September 2008
Vapor Intrusion Newsletter
In This Issue:

EnviroGroup Quick Links:

EnviroGroup Limited
ITRC VI Classroom Training

A two day classroom vapor intrusion course will be held by the Interstate Technology and Regulatory Council in Portland, OR on October 7 and 8, 2008. A reduced registration fee is available until September 19. Dave Folkes of EnviroGroup is one of the instructors, along with John Boyer of the New Jersey DEP and Bill Morris of the Kansas DHE (both co- leaders of the ITRC VI Team), Blayne Hartman (co- founder of H&P Mobile Geochemistry), and Todd McAlary of Geosyntec. According to ITRC, the course will enable you to:

  • learn the latest strategies to conduct site screening and investigations;
  • determine what tools are appropriate to collect quality data and evaluate the results;
  • apply multiple lines of evidence to ensure quality decision-making;
  • build solutions for VI issues through understanding of mitigation options; and
  • network with environmental professionals dealing with this interdisciplinary and complex pathway
Interactive learning with hands-on exhibits, classroom exercises, and frequent Q&A sessions will reinforce these course objectives and contribute to a practical understanding of this difficult pathway. More information on the class, dates, and registration can be found at:

NEWMOA VI Workshop

The Northeast Waste Management Officials' Association and Brown University are sponsoring a workshop titled: "Vapor Intrusion in Commercial and Industrial Buildings: Assessment and Mitigation". It will be held September 23, 2008 in Westford, MA and September 24, 2008 in Providence, RI. Dave Folkes of EnviroGroup Limited will be speaking on mitigation of commercial buildings using sub-slab depressurization techniques. Other speakers will be addressing use of HVAC solutions and additional topics. The information on the workshop can be found at:

New York Passes Law Requiring VI Notification

On September 4, 2008 Governor Patterson of New York signed into law Bill A10952B/S8634 which requires owners of property who receive test results (indoor air, subslab air, ambient air, groundwater, or soil) that exceed indoor air guidelines to notify renters of the test results and also to distribute a fact sheet. Owners of property which has engineering controls in place to mitigate indoor air contamination are also required to provide a fact sheet to prospective renters before leasing the property. Details of the law can be found at:

Minnesota VI Guidance

The Minnesota Pollution Control Agency recently released two vapor intrusion guidance documents. Detailed technical support documents supplementing these guidance documents will be released in the future. Both documents include intrusion screening values. The guidance for vapor intrusion assessments at petroleum release sites includes sampling methodologies and QA/QC requirements. The petroleum guidance document is found at:

The guidance document for Superfund, RCRA, and voluntary cleanups at non petroleum sites utilizes a three-tiered risk-based approach and includes a section on response actions. This document is found at:

AWMA Vapor Intrusion Specialty Conference

The Air and Waste Management Association will be holding its fourth specialty conference on vapor intrusion on January 27-30, 2009 in San Diego, CA. Four professional development VI courses are offered on Jan. 27. Preliminary information on the conference can be found at:

Using Tree Cores to Assess Distribution of Subsurface Volatile Organics

The U. S. Geological Survey has published a report on the collection and analysis of this type of tree data. This data collection method involves taking three inch tree cores, sealing them in vials, and later analyzing the headspace by gas chromatography. Both chlorinated and non chlorinated organics can be detected. The report is available at:

CERTI Radon Radio Theater Program

The Center for Environmental Research and Technology has produced a Radon Radio Theater program, providing free access to interviews on various radon topics, including an interview of Dave Folkes of EnviroGroup concerning vapor intrusion and how it compares to more traditional radon issues. CERTI provides distance-based training and certification and other resources for radon professionals. The audio program can be found 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 2008. 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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