Tag Archives: Highways Agency

A11 drainage channels vegetating
Solution

Green Swales on Roadside

Soft engineered ‘Green Swale Grass Channel’ attenuates road run-off water, filters suspended solids, and traps hydro carbons and heavy metals, significantly improving water quality.

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News

Salix installs new green channel to reduce A11 pollution

Salix has installed a revolutionary green drainage channel along an 18km stretch of the A11 in Norfolk, between Fiveways and Thetford.

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