Our SLEA Monitoring Networks

SLEA Downriver Monitoring Station

The SLEA Downriver Monitoring Station is independently funded by SLEA but operated at arms-length by a third-party contractor. It is located on the Canadian side of the St. Clair River at a location that is directly south of concentrated industrial activities upstream in Sarnia and St. Clair Township. The station includes an auto sampling system that pulls from an inlet that extends out from the shoreline into the main flow of the river. These samples are then automatically sent to modern analytical equipment located at the station for immediate processing. Outliers in the data are reported into SLEA members for review and response as required. In the event of an incident at any site, all SLEA members and regulatory officials are provided with downriver readings as needed. 

SLEA Air Monitoring Stations

SLEA Air Monitoring Stations are also independently funded by SLEA and operated by a third-party contractor. Information about the air monitoring stations may be found at our CASA website that is also fully funded through SLEA to provide public access to all ambient air monitoring information in the Sarnia-Lambton airshed.