Water Quality Monitoring 40 Metres Below the Sea Bed!

May 20 2007

Author: Eurotunnel on behalf of Hach Lange GmbH

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Natural groundwater collected around the tunnels operated by Eurotunnel is continuously monitored before being pumped to the coast and discharged into the sea. Six multiparameter water quality monitoring systems have been customdesigned by HACH LANGE to ensure that there is no potential for harmful water to enter the pipelines. Each monitoring system is connected to a sophisticated data collection and alarm system that is able to divert water into vast underground sumps if alarm conditions occur. To-date, no such emergency has taken place. Commenting on the new monitoring system, Eurotunnel Senior Technician Specialist Michael Edwards, says “The two major benefits are improved reliability and a lower maintenance requirement.”

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