CEFAS54d6dbfd-6c54-4798-9327-af6ca3f081da English dataset Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk pointOfContact 2025-08-28T02:30:22 EPSG Geodetic Parameter Registry 2022-01-07 revision WGS 84 Dredge Contaminant Seabed Data in UK Waters 1998 - 2022 2024-05-15 publication 2025-08-28 revision 2024-03-06 creation CEFAS21832 https://data.cefas.co.uk Dredge sediment contaminant concentrations, including trace metals, organotoxins, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), organochlorine pesticides (OCs), and polybrominated diphenyl ethers (PBDEs) data collated under the Action Level Review Project by Centre for Environment, Fisheries and Aquaculture Science (Cefas) within UK waters from 1998 to 2022. The purpose of this study was to determine potential impacts of proposed action levels in the assessment of dredged sediment for licensing of disposal at sea. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk originator Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk custodian Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) Cefas Lowestoft Laboratory Pakefield Road Lowestoft Suffolk NR33 0HT UK data.manager@cefas.co.uk distributor Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) data.manager@cefas.co.uk owner Marine Management Organisation (MMO) info@marinemanagement.org.uk owner notPlanned Concentration of polycyclic aromatic hydrocarbons (PAHs) in biota Concentration of other organic contaminants in biota Inorganic chemical composition of sediment or rocks SeaDataNet P02 parameter discovery vocabulary 2011-03-25 revision Human activity SeaDataNet P03 parameter discovery vocabulary 2011-03-25 revision Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Unknown SeaVoX Vertical Co-ordinate Coverages 2010-05-18 revision Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 publication data.gov.uk MEDIN metadata record availability 2012-01-11 publication otherRestrictions noLimitations otherRestrictions Publicly available data licensed under the Open Government Licence v3.0 ( `https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/`_ ) – Please note the applicable attribution statement is as follows: ‘includes Crown copyright, Cefas 2024' .. _`https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/`: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ English environment -9.00 4.00 49.00 60.00 1998 2022 Unknown https://data.cefas.co.uk/view/21832 Cefas Data Portal information The Cefas Data Portal contains metadata records and data sets available to download and connect to in support of our commitment to open science. dataset INSPIRE Data Specification on Habitats and Biotopes – Technical Guidelines 2013-12-10 publication false See the referenced specification Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication true See the referenced specification Action Levels (ALs) are thresholds which are used to determine whether dredged material is suitable for disposal at sea, by providing a proxy risk assessment for potential impacts to biological features such as fish and benthos. There are two thresholds, Action Level 1 (AL1) is the lower threshold and Action Level 2 (AL2) is the upper threshold. Sediments with contaminant concentrations lower than AL1 are generally considered acceptable for disposal at sea, pending other considerations such as physical suitability for the disposal site and potential beneficial uses and sediments with contaminant concentrations above AL2 are considered unacceptable for uncontrolled disposal at sea without special handing and containment (MMO, 2015). Sediments with contaminant concentrations between AL1 and AL2 are evaluated using a weight of evidence approach currently. Dredge sediment contaminant data was collated and assessed. A user-friendly and accessible sediment management framework application has been developed. Action Levels Viewer ( `https://rconnect.cefas.co.uk/action_levels_tool/`_) The source data is owned by the Marine Management Organisation (MMO). MMO have agreed for this data to be made available. Historical data for Scotland and Wales has been included. All data undergoes quality assurance checks as part of the licensing assessment. Laboratories are validated for the required methodologies.Mason, C.; Vivian, C.; Griffith, A.; Warford, L.; Hynes, C.;Barber, J.; Sheahan, D.; Bersuder, P.; Bakir, A.; Lonsdale, J.-A. Reviewing the UK’s Action Levels for the Management of Dredged Material. Geosciences 2022, 12, 3. `https://doi.org/10.3390/geosciences12010003`_ .. _`https://rconnect.cefas.co.uk/action_levels_tool/`: https://rconnect.cefas.co.uk/action_levels_tool/ .. _`https://doi.org/10.3390/geosciences12010003`: https://doi.org/10.3390/geosciences12010003 MEDIN 3.1.1