The Atlantic RBCA Guidance for Vapour Intrusion Assessments V4, May 2024 reflects recent updates to toxicological information for several parameters and includes vapour intrusion levels (VISLs) for select chlorinated solvents (CVOCs) consistent with updates to the Atlantic RBCA for Impacted Sites in Atlantic Canada User Guidance V4 (2021, updated 2022).

EFFECTIVE IMMEDIATELY assessment, remediation, and closure reports must utilize the NEW Atlantic RBCA Guidance for Vapour Intrusion Assessments V4, May 2024 except for specific circumstances as outlined in the Implementation Procedure, May 2024