Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1419; Approaches to the River Humber Part 2, Area in SqKm: 491; Approaches to the River Humber Part 4, Area in SqKm: 229, (13/09/2013 to 16/04/2014), Standard: IHO S44ed5 Order 1a. Contract: Shallow. FY 2013/14. Contractor: Gardline.