There are a number of different onshore and offshore surveys, relating to both construction and environmental issues, which need to be completed before the construction of the Dudgeon Offshore Wind Farm can commence.
Onshore, initial 'walkover' surveys along the cable corridor in North Norfolk and Breckland commenced during Spring 2013, and these included great crested newts and other protected species, as well as the mapping of trees, hedges, public rights of way point of access and other topographical features.
Stage 1 archaeological surveys have also been undertaken, as a result of which some trial trenching works will be undertaken after the 2014 harvest is complete with the aim of ensuring that there are no surprise archaeological finds during construction.
Technical consultants continue to gather facts and data for work associated with the design of soils management and drainage plans which will ensure that the land is returned to its existing condition on completion of onshore construction.
Offshore, surveys are part of the wind farm construction planning process, and during 2013 these included geophysical surveys of the wind farm site, as well as a subsea and seabed survey along the offshore cable route to its landfall at Weybourne Hope on the North Norfolk coast.
During early 2014 a core penetration test and a borehole survey within the main wind farm site were undertaken; these were followed by catch sampling surveys during the summer months, both along the export cable corridor and within the wind farm site.