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September 2009
Vapor Intrusion Newsletter
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Hawaii Issues VI Sampling Guidance

On June 21, 2009 the Hawaii Department of Health posted an interim final document "Technical Guidance Manual for the Implementation of the Hawai'i State Contingency Plan". Section 7 of that document is "Soil Vapor and Indoor Air Sampling Guidance". See the guidance at:

New Jersey Modifies Sampling Requirements

On August 21, 2009 the New Jersey DEP posted revised requirements for its investigative approach to vapor intrusion. The change requires collection of both indoor air and sub-slab samples for all exceedances of ground water screening levels. To avoid cross contamination between the soil gas and indoor air sequential sampling of these two media are required. The indoor air sample is required to be performed first and then followed the next day by the sub-slab sample. These revisions are to be implemented immediately. More details can be found at:

UMASS Conference

The 25th International Conference on Soils, Sediments, Water and Energy will be held at the University of Massachusetts October 19-22, 2009. There will be an afternoon vapor intrusion session on October 21 and there also will be a workshop, Assessing Vapor Intrusion at Petroleum Release Sites, held on October 19. The preliminary agenda can be found at:

Monterey Conference

The Seventh International Conference on Remediation of Chlorinated and Recalcitrant Compounds will be held May 24-27, 2010 in Monterey, CA. Evaluation, regulation, and mitigation of VOC vapor intrusion into buildings are anticipated sessions at the conference. More information on this conference can be found at:

Canadian Soil Vapor Monitoring Guidance Released

The Canadian Council of Ministers of the Environment recently released the document "Scoping Assessment of Soil Vapour Monitoring Protocols for Evaluating Subsurface Vapour Intrusion Into Indoor Air". The document was prepared by Geosyntec Consultants and provides a comparison of the provisions of ten separate soil gas sampling guidance documents. This document can be found at:

Jim Cowart Joins EnviroGroup

We are pleased to announce that Jim Cowart has joined EnviroGroup Limited as a Senior Project Manager. Jim is a PE with over 30 years experience and has managed two of the largest VI projects in the country: the CDOT "MTL" Site in Denver, CO and the redevelopment of a 130 acre former landfill site in Sheridan, CO, including methane mitigation in large commercial buildings. Read more about Jim 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 2009. 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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