Hinkley Point dredging: EDF rejects radioactivity concerns July 30, 2021, by Eldin Ganic EDF has rejected concerns about radioactivity from the dredging works in the Bristol Channel around Hinkley Point power station near Burnham-On-Sea. Hinkley Point C is one of many companies – over many decades – which has dredged and deposited mud in the Bristol Channel for industrial or construction purposes. Dredging first began in September 2018 when contractors successfully completed the first licensed work to dredge and deposit mud in the Severn Estuary. The mud has to be disposed of within the Severn Area of Conservation (SAC) in order to maintain the balance of sediment and mud in the area.