This document has been superseded by Atlantic RBCA Guidance for Vapour Intrusion Assessments (December 2016) but is retained for information purposes.

Developed by the Atlantic PIRI Soil Vapour and Indoor Air Monitoring Task Group, this document provides guidance on the assessment and quantification of the subsurface vapours to indoor air exposure pathway for petroleum hydrocarbons through the measurement or prediction of soil vapour or indoor air concentrations. It is designed for use by site professionals and provides background discussion, technical options, recommended approaches, and mandatory elements for assessing the subsurface vapours to indoor air exposure pathway.

A presentation providing an overview of this Guidance is also available: Overview of Guidance on Soil Vapour and Indoor Air Monitoring