Atlantic RBCA Guidance for Vapour Intrusion Assessments

Atlantic RBCA Guidance for Vapour Intrusion Assessments

This document supercedes the User Guidance for Soil Vapour and Indoor Air Monitoring Assessments (Atlantic PIRI, 2006). Please refer to the Guidance for Vapour Intrusion Assessments Implementation Procedure (December 2016) for information on the implementation process for this new guidance.

As a result of feedback obtained through a public review, this guidance has been updated to remove all specific reference to chlorinated solvents. This is based on Health Canada’s recommendation that the most recent toxicity reference values published by the US EPA be used for the assessment of sites contaminated with perchloroethylene (PCE, also known as tetrachloroethylene) and trichloroethylene (TCE). Please refer to Implementation Procedure and Technical Bulletin #2 for PCE and TCE (December 2016) for further details.

Provincial regulatory staff may be contacted regarding any questions on this new guidance or the changes related to the chlorinated solvents toxicological information.