Atlantic RBCA User Guidance (revised January 2015)

Health Canada updated the Canadian Drinking Water Quality Guidelines in October 2014, which included revised guidelines for Ethylbenzene and Xylenes.   To reflect these changes, Atlantic PIRI revised the Tier I and II screening level tables in Appendix 3 and 4 in January 2015.  Furthermore, in September 2015, editorial changes were made to the screening level table footnotes and to a groundwater screening level for industrial land use. The values which have been changed are highlighted in blue.

At this time, Site Professionals continue to be responsible for updating the “Chem/Tox” database in the toolkit (when carrying out Tier II SSTL calculations for soil leaching to groundwater for potable water sites) until the Toolkit has been upgraded.

A technical bulletin has been created to provide step-by-step guidance on updating the Atlantic RBCA toolkit Chem/Tox database for Ethylbenzene and Xylenes.