Remediating UK river crossing addresses variety of concerns

To address the exposure by scour of Mainline Pipelines Ltd.'s high-pressure petroleum products line crossing the River Wye in the UK, design and remedial construction allowed for safety issues, the potential impact on the river ecology, recreational river users, the river hydrology, and restricted access to the steep northern riverbank.Originally laid in 1972, the line moves products from the port at Milford Haven to the Midlands of England. Mainline Pipelines discovered the exposure early in 1999 and knew that a break in or temporary shutdown of the pipeline would have had serious consequences.A review of historical air photographs and maps, dating from 1888, showed that the meanderi...

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