10.14466/CEFASDATAHUB.131
Cefas
Cefas
Centre for Environment, Fisheries and Aquaculture Science
Volumes, dredged area measurements and estimated contaminants of material disposed at licensed offshore sites around the UK coast from 2000 to 2020
Cefas
2022
csv
Anthropogenic contamination
Quantity of material dumped
Dredging & disposal
CEFAS
CEFAS
Centre for Environment, Fisheries and Aquaculture Science
Marine Management Organisation
Marine Management Organisation
Natural Resources Wales
Natural Resources Wales
Natural Resources Wales
Marine Scotland
Marine Scotland
Marine Scotland
Department of Agriculture
Department of Agriculture
Department of Agriculture
Environment and Rural Affairs
Environment and Rural Affairs
Department for Environment Food and Rural Affairs
Isle of Man Government
Isle of Man Government
Government of Jersey
Government of Jersey
Government of Guernsey
Government of Guernsey
2000-01-01/2020-01-01
en
1
Open Government Licence v3.0
The dataset contains data related to registered offshore sediment disposal sites around the UK coast and includes volumes of disposed material, dredged areas, calculated levels of contaminants in the disposal material and licence details. Data were collated for the years 2000 to 2020. The Centre for Environment, Fisheries and Aquaculture Science (Cefas) on behalf of Department for environment, food and rural affairs (Defra), report these data for the United Kingdom (England, Scotland, Wales, Northern Ireland), Jersey, Guernsey and Isle of Man, annually as a UK obligation under both the London Convention/London Protocol on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter (LCLP) and the Convention for the Protection of the Marine Environment of the North-East Atlantic (OSPAR).
The dataset was created by combining the regulatory data collected around the UK, including England and the Welsh, Scottish, Northern Irish and Isle of Man devolved administrations, with quality assurance and calculations of contaminant loads carried out by Cefas. Regulatory data includes disposal returns submitted to individual regulatory bodies by the licence holders, supplemented by chemical and physical analyses data of samples taken to characterise the disposed material. This information is provided annually to Cefas by the individual bodies. Cefas then collates the various returns datasets and carries out quality assurance. Cefas also calculates the contaminant loads from the sample analysis data, and scales up to individual sites to estimate how much contaminant has been disposed of. Reports produced by Cefas with the finalised data are submitted to LCLP and OSPAR secretariats on behalf of Defra.
The spatial extents of the licensed disposal sites are described by the following published metadata https://data.cefas.co.uk/view/407. Disposal volumes are measured using on board volume calculations and reported to the Regulator(s) annually. Contaminant information is measured in samples using established techniques for marine sediment (see https://www.gov.uk/guidance/marine-licensing-sediment-analysis-and-sample-plans for example) and are then weighted by dredged area proportions and scaled up to the disposal volume.