db2e9fe6-5bd4-4251-8b40-666a6181d156 eng series The Crown Estate +44 020 7851 5000 16 New Burlington Place London W1S 2HX United Kingdom enquiries@thecrownestate.co.uk http://www.thecrownestate.co.uk pointOfContact 2014-12-10 MEDIN Discovery Profile 2.3.8 urn:ogc:def:crs:EPSG::4326 2012, EMU Ltd., Galloper Offshore Wind Farm, Site Investigation Phase 1 Geophysical Surveys 2012 2013-10-17 publication 12/J/1/02/2083/1417 EMU Limited (EMU) was commissioned by Galloper Wind Farm Limited (GWFL) to conduct a geophysical investigation and provide detailed seabed information on the Galloper Offshore Wind Farm UXO and Shallow Gas Surveys project. The survey was required in order to mitigate the risks of UXO and shallow gas before phase 1 works affecting the seabed are carried out. The UXO Survey consisted of 40 sites each covering 150 x 150 m whilst the Shallow Gas Survey comprised of 200 m x 200 m area over the same 40 sites. The site comprised of two areas, A and B, which were located between 26 km and 53 km off the coast of East Anglia. Area A contained 29 survey sites and Area B contained 11 survey sites. The UXO surveys required full magnetometer coverage based on a maximum sensor spacing of 6 m as well as 200% coverage for sidescan sonar, and multibeam bathymetry. The shallow gas surveys required 5 main multi-channel seismic lines and 5 cross lines on each site. The aims of the survey were to:Locate any potential UXO hazards that may be present on the seabed or buried at a shallow depth within each survey area using a multiple magnetometer array; Locate any accumulations of shallow gas using multichannel seismic data; and Produce a comprehensive report on the survey results. RWE Npower Renewables Limited Auckland House, Lydiard Fields, Great Western Way, info@rwenpower.com custodian EMU Ltd - Operations +44 (0) 2392 205500 +44 (0) 02392 205555 Victory House, Trafalgar Wharf (Unit 16), Hamilton Road Portsmouth PO6 4PX United Kingdom marketing@emulimited.com http://www.emulimited.com originator notPlanned Offshore area of search The Crown Estate Renewable Energy Development Areas 2012-05-15 revision 1 Pre-Construction monitoring The Crown Estate Renewable Energy Development Phases 2012-05-15 revision 1 Gas fluxes between the water column and the atmosphere SeaDataNet Parameter Discovery Vocabulary 2014-10-09 revision 86 Marine Environmental Data and Information Network Marine Environmental Data and Information Network http://www.marinedataexchange.co.uk/pages/terms-of-use.aspx copyright otherRestrictions copyright otherRestrictions http://www.marinedataexchange.co.uk/pages/terms-of-use.aspx http://www.marinedataexchange.co.uk/pages/terms-of-use.aspx eng environment 1.87 2.15 51.71 52.00 2012-07-02 2012-10-30 series The RV Discovery was mobilised in Shoreham from the 2nd to 8th July 2012. The Shallow Gas Survey was conducted between the 9th and 16th July and 28th July to 5th August. A surrogate items test for the UXO survey was initially conducted on 17th July (two further tests were conducted as a result of a change of vessels on the 27th August and the 19th October). Survey operations then commenced from 17th to 21st July and 6th to 12th August. At this point RV Discovery was demobilised. The IMOR was mobilised from the 20th to 26th August to replace RV Discovery. UXO survey operations recommenced on the 26th August and continued until the 29th September when IMOR’s charter expired and she left the project. The RV Discovery was remobilised on 9th October and began operations on the UXO survey on 20th October. The UXO Survey was completed on 30th October 2012. https://www.marinedataexchange.co.uk/details/383/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site.