Acoustics, Flood Defence - Climate Change case study

Hull River Defences

Background

A major flood alleviation scheme to improve protection against climate change and sea level rise has reached its target of better protecting thousands of homes in Hull. The new, higher defences built by the Environment Agency along the estuary foreshore are now in place, ready to protect the city from tidal surges. The scheme has been key in enabling the Environment Agency to meet its ambitious target of protecting 300,000 homes from flooding across England.

Challenge

We completed a comprehensive desktop study to identify the potential acoustic risks at an early stage. Sensitive receptors were identified, including third party asset.

Solution

A matrix was developed of the potential acoustic risk at each location, depending on receptor and works programmed, together with a plan of our input to support our contractor. We modelled sections of the river to assess the potential noise impact on residential dwellings and a recording studio. Where our assessment identified potential risk, baseline noise and vibration surveys were undertaken. This corresponds with early engagement with the Local Authority, supported with a Section 61 application  (CoPA 1974). Noise and vibration assessments to receptors were included in this Application, along with construction methodologies, plant and timetable considered for Best Practicable Means. Due to tidal flow on the river, piling and associated activities were required outside of core working hours. Noise and vibration mitigation was  at the core of the application.