
BC Protocol 4 and Protocol 9 Updates: New Procedures for Establishing Local Background Concentrations
The British Columbia Ministry of Environment and Parks has released updated versions of Protocol 4 and Protocol 9 under the Environmental Management Act (EMA). The revised protocols came into effect immediately on June 19, 2026. They introduced several changes intended to improve clarity, streamline regulatory processes, and address technical updates related to local background concentrations in soil and groundwater. These…







