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This report is a contribution to the Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environment Assessment SEA2 for the North Sea. It draws on a wide range of data sources to provide an overview of the chemicals used in the offshore oil and gas industry, of the chemicals already in the environment and of those released into the environment from other sources. Considering the whole sea area, it should be noted that the water samples with the highest levels of chemical contamination are found at inshore estuary and coastal sites subject to high industrial usage. Approximately 2,000 chemical products are used by the offshore oil and gas industry. In 1999 some 180,000 tonnes of chemicals were discharged into the UK sector of the North Sea. Produced water is now the main source of contaminants, having overtaken drill cuttings since oil-based muds were replaced by less harmful alternatives. 24,286 tonnes of chemicals were reported as discharged to the UKCS in produced water in 1999. As oilfields mature, the amount of produced water increases. The range of chemicals used by the offshore oil and gas industry, the means of regulating them and of monitoring their use, are discussed. Evidence of biological effects caused by the release of contaminants into the sea is reviewed.
British Geological Survey (BGS)
Other details | ||
Internal code | Internally assigned metadata identifier | 785 |
Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 2001 Strategic Environmental Assessment SEA2 Technical report - Contaminant status of the North Sea |
File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | aba64100-c109-4de3-e044-0003ba6f30bd |
Resource Identifier | This is the code assigned by the data owner. | BGS_SEA_19 |
Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2001-01-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2001-01-01 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 5 |
Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | This report is a contribution to the Department of Trade and Industry's (now Department of Energy and Climate Change) Strategic Environment Assessment SEA2 for the North Sea. It draws on a wide range of data sources to provide an overview of the chemicals used in the offshore oil and gas industry, of the chemicals already in the environment and of those released into the environment from other sources. Considering the whole sea area, it should be noted that the water samples with the highest levels of chemical contamination are found at inshore estuary and coastal sites subject to high industrial usage. Approximately 2,000 chemical products are used by the offshore oil and gas industry. In 1999 some 180,000 tonnes of chemicals were discharged into the UK sector of the North Sea. Produced water is now the main source of contaminants, having overtaken drill cuttings since oil-based muds were replaced by less harmful alternatives. 24,286 tonnes of chemicals were reported as discharged to the UKCS in produced water in 1999. As oilfields mature, the amount of produced water increases. The range of chemicals used by the offshore oil and gas industry, the means of regulating them and of monitoring their use, are discussed. Evidence of biological effects caused by the release of contaminants into the sea is reviewed. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This report was compiled by CEFAS in consultation with Fisheries Research Services, Marine Laboratory Aberdeen using various sources as part of the UK Department of Energy and Climate Change's Offshore Energy Strategic Environmental Assessment programme. Data, such as those collated to support evaluations of the quality status of the North Sea (1987, 1990, 1993, 2000) and the UK NMMP reports are presented in a variety of publications, including CEFAS Aquatic Environmental Monitoring Reports (AEMRs) and reports from UKOOA (United Kingdom Offshore Operators Association). Of particular relevance was a study commissioned by UKOOA, which transferred historical environmental survey data around oil and gas platforms from paper reports into a database, enabling a comprehensive analysis to be undertaken. Information from a draft of this report has been included where relevant. In addition, literature searches were undertaken so as to identify other studies on the sources and effects of contamination relevant to the oil and gas activities in the North Sea. |
Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | http://www.offshore-sea.org.uk/site/index.php |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | NDGO0001 |
Keyword title | NERC OAI Harvesting | |
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Concentration of carbohydrates, phenols, alkanols (alcohols), ethers, aldehydes and ketones in sediment |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Concentration of other organic contaminants in biota | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Concentration of other organic contaminants in sediment samples | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Concentration of polychlorobiphenyls (PCBs) in biota | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Concentration of polychlorobiphenyls (PCBs) in sediment samples | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Concentration of polycyclic aromatic hydrocarbons (PAHs) in biota | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Concentration of polycyclic aromatic hydrocarbons (PAHs) in sediment samples | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Industrial activity | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Industrial discharges | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Metal concentrations in biota | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Inorganic chemical composition of sediment or rocks | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Energy resources | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Production and industrial facilities | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | crust | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | sediment | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 61.8 |
East | The eastern-most limit of the data resource in decimal degrees | 3.3 |
South | The southern-most limit of the data resource in decimal degrees | 52.8 |
West | The western-most limit of the data resource in decimal degrees | -1.9 |
Responsible organisations | ||
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | British Geological Survey (BGS) | |
Individual name | Mary Mowat | |
Phone | +44 (0)131 667 1000 | |
Fax | +44 (0)131 668 4140 | |
Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
Organisation name | British Geological Survey (BGS) | |
Individual name | Paul Henni | |
Phone | +44 (0)131 667 1000 | |
Delivery point | Murchison House, West Mains Road | |
Postal code | EH9 3LA | |
City | Edinburgh | |
Country | UK | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Department for Energy and Climate Change (DECC) | |
Phone | +44 0300 060 4000 | |
Fax | +44 (0) 1823 284077 | |
Delivery point | Admiralty Way | |
Postal code | SW1A 2HD | |
City | London | |
Country | UK | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | http://www.bgs.ac.uk/data/sea/home.html |
Locator name | Name of the web resource | Strategic Environmental Assessment (SEA) data portal |
Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | download |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | intellectualPropertyRights |
21 Conditions for Access and Use - Use limitation | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | The SEAs data were produced as part of the UK Department of Energy and Climate Change's Offshore Energy Strategic Environmental Assessment programme; Crown Copyright, all rights reserved. The DECC SEA must be acknowledged in any maps or publications that make use of the data. All the data files are freely available to the public. The Strategic Environmental Assessment (SEA) data portal provides free access to available data and reports which have been produced through the SEA process. The site is run and managed by BGS on behalf of the Department of Energy and Climate Change (DECC). Many files can be downloaded directly from this website. Those that are too large to download can be ordered via the website for postal delivery from BGS. BGS (NERC) has been contracted by DECC to publish SEA datasets on its behalf. All intellectual property rights (including , without limitation, copyrights, database rights and all other rights which subsist or may at any time in the future subsist in the Dataset(s)) in the Dataset(s) ('Intellectual Property Rights') are owned by DECC (formerly the Department of Trade and Industry, and the Department for Business, Enterprise and Regulatory Reform). BGS has been authorised by DECC to use SEA datasets for all purposes but on a 'not-for-profit basis'. BGS has been authorised by DECC to pass on SEA datasets to third parties so that they can use them for all purposes but on a 'not-for-profit' basis. |
Available data formats | ||
Data format name | Format in which digital data can be provided for transfer | Documents |
Version info | ||
Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2001-08-01 |
Metadata date | The date when the content of this metadata record was last updated. | 2011-08-30 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata Standard |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.5 |
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