Extensive flooding was occurring prior to works downstream of the hospital. The project needed to reduce both total and peak flows. A multi-stage sustainable water treatment system was proposed, combining a number of techniques such as porous asphalt, swales, French drains and attenuation basins.
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M1 junctions 28-31 smart motorway phase 2
Drainasphalt just what the doctor ordered
Project Horizon - Surrey County Council
Aggregate Industries asked once again to help