Environmental Statement volume 4 - Chiltern Evergreen3

600 mm freeboard over the 1 in 100 year event plus climate change will thereforebe dictated by the current position and size of bridge infrastructure. No soffitswill be lowered, and therefore there will no potential for flood risk to beexacerbated. Works conducted at the detailed design stage will estimate existingsoffit level clearance over the 1 in 100 year plus climate change event such thatthe Environment Agency are aware of the conveyance capacities under theseconditions.36