A38 Saltash Tunnel - Air Quality Monitoring Devices

Highways England are looking to identify potential suppliers who are able to supply air quality monitoring units for the A38 Saltash tunnel. The devices must be able to detect, monitor and report: o PM2.5 Diesel Particulate o CO (Carbon Monoxide) o NO (Nitrogen oxide) o SO2 (Sulphur Dioxide) Background: There is a need to evaluate the potential for safe working within a live tunnel bore thus reducing the impact of the works on the adjacent local network and residents. The data gathered will be used to assess whethe...