ONE-Dyas will commission a plume study to find out where the turbidity and deposition take place. ONE-Dyas will also investigate whether and how much damage this causes to shellfish, fish and fish larvae. ONE-Dyas wants to reduce the discharge of drilling fluid and drill cuttings. This is done by changing the order of the drilling of the different sections of the wells. This means that the Water-Based Mud (WBM) can be used for longer, thus reducing the need for and need for discharges. For some underground rocks it is necessary to use Oil-Based Mud (OBM). The OBM and drill cuttings from these sections are brought ashore and processed there.