Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1151; Approaches to the Firth of Forth, Area in SqKm: 3046, (20/05/2007 to 24/08/2007), Standard: IHO S44ed4 Order 1. Contract: Medium (LT). FY 2006/07. Contractor: Gardline.