PBA, in association with the JacksonHyder joint venture, was commissioned to prepare Temporary Flood Defence Deployment Plans for a number of locations across the north of England, on behalf of the Environment Agency (EA).
Working with the EA, PBA investigated the practical implementation of Temporary Defence Deployment where the need for protection from fluvial or tidal flooding had been previously identified.
PBA initially undertook a data gathering and feasibility review exercise in order to assess the full extent of the defence deployment required. This included a site visit, liaison with EA staff, and gaining an understanding of the deployment trigger points and the time available for defence deployment at each location.
A key consideration was to ensure that flood risk is not increased to surrounding properties as a result of the deployment of temporary defences, and to consider the risks to operatives and members of the public from all aspects of the deployment sequence.
Following this initial screening stage, PBA devised individual step-by-step plans for three sites, tailored to allow consideration of operational requirements in each area. The plans clearly identified flooding trigger points, defence drop off locations and deployment sequences to allow for the quick and efficient response by the local EA team to future flooding events.
Part of the planning required for the deployment of temporary defences is the consideration of road and pedestrian footpath closures and subsequent diversions. PBA’s civils and highways teams prepared traffic management plans to support the quick and effective deployment of the temporary defences, whilst providing alternative access routes for vehicular traffic and pedestrians.