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Run-off discharged into the river
The geocellular units were installed beneath the roadway on a podium deck, allowing for the creation of an underground car park – providing the space needed to store high volumes whilst making use of valuable space. And as the Water Authority now charges for the amount of surface water run-off discharged into the river, the podium deck plays an important role helping to reduce it.

The site was partially Tidal Locked to ensure a full and effective storage and attenuation process to mitigate the risk of flooding and tidal breach.