438b11e4-c899-4387-a7a7-8a533ab91057 English series series 2026-03-17T09:45:14 MEDIN 3.1.2 oceans society Marine archaeology SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Hazards to navigation SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Side-scan sonar SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Bathymetry and Elevation SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Pre-Construction engineering The Crown Estate Renewable Energy Development Phases 2012-05-15 revision Renewable Energy Lease area The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Cable Landfall The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Intertidal zone The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Offshore Cable Corridor The Crown Estate Renewable Energy Development Areas 2012-05-15 revision Energy resources GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Human health and safety GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Utility and government services GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaDataNet sea areas 2012-11-07 revision Irish Sea and St. George's Channel SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision soil and sediment SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision water column 2014-08-26T00:00:00 2016-04-01T23:59:59 -4.3271 -2.8385 53.6112 54.3125 TCE-2241 Marine Data Exchange 2014-2016, Ordtek, Walney Extension, Unexploded Ordnance (UXO) Studies Unexploded Ordnance (UXO) Studies 2021-05-17T14:11:48 publication English Ordtek Limited has been appointed as the unexploded ordnance (UXO) risk management consultant to DONG Energy DE) for the Walney Extension Offshore Wind Farm project. This package contains a range of UXO risk management documents, including technical notes and reports. There will be no limitations when published on the Marine Data Exchange otherRestrictions Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian Ordtek Limited +44 (0) 1379 644400 enquiries@ordtek.com originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Orsted Customer-questions@orsted.com owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-2241/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. 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 2010-12-08T00:00:00 publication Conformity with the Commission Regulation (EU) No 1089/2010 was either not relevant to this dataset or not a requirement of the Marine Data Exchange for the creation and submission of this dataset; therefore, conformity has not been assessed and cannot be declared False series An important part of this DTS has been to undertake a comprehensive review of all the sources and data provided. We have independently evaluated each document and dataset in order to ensure that the results and conclusions in this report are founded on a valid baseline. It is evident from Ordtek’s review of the References that a more comprehensive profiling of the UXO risk is required; particular with regard to the marine environment and conditions within certain parts of the study area. This study will address these shortcomings. Our research for this study has identified UXO sources that have the potential to contaminate the area. We have made an assessment of what we consider to be the most likely UXO hazard items in the Area of Interest (AOI) now and, potentially, across the life of the project, including the most likely types that could be encountered, the probability of encountering them as well as the risk and consequences of detonation. We have analysed the marine and inter-tidal environment, specifically how it relates to potential UXO burial, and divided the study area into discrete areas of similar UXO behaviour for the purposes of risk assessment. For completeness we have considered all activities, past and present that could have contributed to UXO contamination. However, military archives and data sets, particularly older ones, are often very limited in both accuracy and detail. Determining specific and complete evidence of the amount of munitions dumped, laid, fired or dropped, live or inert is very rarely possible. Our risk assessment therefore is based on the data that is available, extrapolated to fill information gaps using similar situations from other sites, and built on ALARP principles using the expertise, judgement and high level of experience of our specialist analysts. ABP Marine Environmental Research Ltd 02380711840 enquiries@abpmer.co.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84