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EnviroGroup Limited
Vapor Intrusion News - June 2005
In This Issue:
 *  New Jersey Draft Vapor Intrusion Guidance
 *  Minnesota Vapor Intrusion Assessment Guidance
 *  New Hampshire Draft Vapor Intrusion Guidance
 *  RTI Website
 *  EPRI VI Reference Handbook
 *  STL Seminar
 *  EnviroGroup Website Links Now Listed by both State and Topic


Featured Links:
 *  EnviroGroup VI Services
 *  Vapor Intrusion Links
 *  VI Newsletter Subscription
New Jersey Draft Vapor Intrusion Guidance
The New Jersey Department of Environmental Protection has released its draft Vapor Intrusion Guidance for comment. The comment period closes July 8, 2005. The comprehensive document expresses a preference for investigations to follow a stepwise approach beginning with ground water, then soil gas and finally indoor air tests. The document includes in Table 2 immediate action levels for indoor air for 13 compounds. It also includes in Table 1 generic screening levels for 56 compounds for ground water, soil gas and indoor air for both residential and nonresidential land uses. Appendix F is a literature review and summary of background VOC levels in homes. The document can be found at:



New Jersey Draft VI Guidance



Minnesota Vapor Intrusion Assessment Guidance
The Minnesota Pollution Control Agency released in April 2005 its guidance for Vapor Intrusion Assessments Performed During Site Investigations at petroleum release sites. It contains recommended field procedures for soil gas, sub slab soil gas, and indoor air sampling. Action levels referenced are Minnesota Department of Health Chronic Risk Values and Interim Screening Concentrations and EPA Reference Concentrations. The guidance document can be found at:

Minnesota VI Assessment Guidance



New Hampshire Draft Vapor Intrusion Guidance
The New Hampshire Department of Environmental Services also released in April 2005 a draft Vapor Intrusion Guidance document. The screening method proposed utilizes ground water, soil gas, and indoor air screening values for 32 compounds. A site specific VI pathway assessment is also discussed. The document includes soil gas and indoor air sampling direction and also a discussion of the applicability of OSHA PELS. The document is found at:

New Hampshire Draft VI Guidance



RTI Website
RTI International, an EPA contractor, has a useful VI website which includes the papers presented at a number of VI related conferences held over the past several years. It can be found at:

RTI Website



EPRI VI Reference Handbook
The Electric Power Research Institute has published a "Reference Handbook for Site-Specific Assessment of Subsurface Vapor Intrusion to Indoor Air". The document is a compilation of technical information, procedures and resources related to this subject. Information on the document can be found at:

EPRI VI Reference Handbook



STL Seminar
Severn Trent laboratories will present a seminar titled "Technical Guidance for Indoor Air Vapor Intrusion" on August 10, 2005 in Edison, New Jersey. Topics to be covered include NJDEP and EPA guidance, vapor intrusion modeling, background sources, laboratory methods, quality assurance and lessons learned. Information on this seminar will soon be available on their website at:

STL Seminar



EnviroGroup Website Links Now Listed by both State and Topic
The EnviroGroup Limited website links section has been expanded and updated to include additional VI and remediation information. Links are now organized by both State and topic, and can be found at:

Envirogroup Website Links




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 2003. 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:  EnviroGroup Limited - Vapor Intrusion Solutions
5670 Greenwood Plaza Blvd, Suite 540 | Greenwood Village, CO 80111 | 303-790-1340
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